AU756456B2 - Vehicle engine coolant pump housing - Google Patents
Vehicle engine coolant pump housing Download PDFInfo
- Publication number
- AU756456B2 AU756456B2 AU16444/00A AU1644400A AU756456B2 AU 756456 B2 AU756456 B2 AU 756456B2 AU 16444/00 A AU16444/00 A AU 16444/00A AU 1644400 A AU1644400 A AU 1644400A AU 756456 B2 AU756456 B2 AU 756456B2
- Authority
- AU
- Australia
- Prior art keywords
- coolant
- voltage level
- sensed
- coolant temperature
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000002826 coolant Substances 0.000 title claims description 229
- 238000000034 method Methods 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 7
- 230000009977 dual effect Effects 0.000 claims description 3
- 238000009420 retrofitting Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims 3
- 241001547070 Eriodes Species 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
- Air-Conditioning For Vehicles (AREA)
Description
WO 00/31388 PCT/AU99/01042 1 VEHICLE ENGINE COOLANT PUMP HOUSING The present invention relates to improvements in cooling arrangements for vehicle engines and stationary engines.
Currently vehicle engines are cooled by pumping a liquid coolant around the engine block to pick up heat therefrom and to dissipate such heat from the coolant by passing same through a heat exchanger or radiator. Typically a mechanically driven coolant pump is provided which may be connected to or form part of the engine block and be driven directly from the engine itself by way of a belt and pulley drive. That is, when the engine is not operating the pump also is stationary and no coolant flow occurs other than by thermal syphoning effects. Conversely, when the engine is operating, the speed of rotation of the pump is directly related to the rotational speed of the engine. As a consequence of this, the volume flow rate of the coolant is also directly related to the rotational speed of the engine. This conventional arrangement is believed to have a number of disadvantages in practice including that while the engine is operating large volumes of coolant may be circulated by the pump even though the cooling requirements of the engine may not require same or cavitation may occur at high speeds restricting coolant flow. This also causes an energy drain on the engine and therefore a lack of engine efficiency. Also when the vehicle is stationary and idling, the engine speed is low providing a low coolant flow rate but a high flow rate at times is required. Similarly, each time gearing is changed (either manually or via an automatic transmission), there is instantly an inertia problem for the pump to vary the liquid flow rate immediately to accord with the changed engine speed. Finally, with modern vehicle engine design, there is a practical problem in that many accessories or moving parts of the engine are directly driven via a serpentine drive belt and associated pulleys from the engine drive shaft with the coolant liquid pump being one of these items. If the coolant pump did not have to be driven in this way, then it would, to some extent simplify the design of the drive for the other parts or devices. In addition, when a hot engine is turned off, the coolant continues to absorb heat from the engine block, which heat is slow to dissipate and which allows very high load temperatures, sometimes causing damage or needless wear.
PCT/AU99/01042 Received 17 August 2000 2 The objective therefore of the present invention is to provide a novel coolant system for a vehicle engine that will overcome or minimise some or all of the aforementioned difficulties associated with the current mechanical drive arrangements.
Accordingly, the present invention provides a coolant system for a vehicle engine, said coolant system including a coolant flow circuit which in part includes passage means through an engine block of an internal combustion engine and through a heat exchanger, said coolant system further including a coolant pump means adapted, when operated, to cause coolant flow around said coolant flow circuit, said coolant pump means being driven by drive means independent from said engine. Conveniently said drive means may be an electric motor which may be either a single speed motor or a dual or variable speed motor. The drive means may be itself operated, to thereby drive the pump means, continuously while the engine is operated, or alternatively, the drive means may be thermally controlled in response to engine temperature whereby the pump means operates only when engine cooling is required. The pump means is preferably mounted in the lower heat exchanger (radiator) hose leading from the radiator to the engine block. It is, however, possible to locate the pump means in a number of different locations including the top radiator hose (leading from the engine block to the radiator), as part of the radiator either adjacent its inlet or its outlet, or connected to or as part of the engine block.
In accordance with a further aspect, the present invention provides a coolant system for an internal combustion engine, said coolant system including a coolant flow circuit for a coolant which in part includes passage means for the coolant through an engine block of the engine and through a heat exchanger, said coolant system further including a coolant pump means adapted, when operated, to cause coolant flow around said coolant flow circuit, said coolant pump means being driven by an electric motor independently of said engine, and a coolant temperature sensor means and controller means to control coolant flow delivery output from said coolant pump in response to differing 1 coolant temperature levels being sensed by said coolant temperature sensor means, said controller means being arranged to vary the speed of the electric motor by pulsing the voltage level supplied thereto, the voltage level being pulsed for at least a period of operation of the engine for a period "on" and a period "off" wherein the period "on" is at least one second, with a percentage of the voltage "on" relative to the voltage "off" increasing in response to the coolant temperature level increasing as sensed by said coolant temperature sensor means. In this way, the speed of the electric motor is varied in response to said differing coolant temperature levels being sensed by said coolant temperature sensor means and as a result the flow rate of coolant is similarly varied.
In accordance with a further aspect, the present invention provides a coolant system for an internal combustion engine, said coolant system including a coolant flow circuit for a coolant which in part includes passage means for the coolant through an engine block of the engine and through a heat exchanger, said coolant system further including a coolant pump means adapted, when :o 15 operated, to cause coolant flow around said coolant flow circuit, said coolant pump means being driven by an electric motor independently of said engine, and a coolant temperature sensor means and controller means to control coolant flow delivery output from said coolant pump in response to differing coolant temperature levels being sensed by said coolant temperature sensor means, wherein said controller means is arranged to vary the speed of said electric motor by pulsing the voltage level supplied thereto, the voltage level being pulsed for at least a period of operation of the engine for a period "on" and a period "off", with a ON percentage of the voltage "on" relative to the voltage "off" increasing in response to the coolant temperature level increasing as sensed by said coolant temperature sensor means, and wherein said controller means enables differing voltage levels to be supplied to said motor in response to differing coolant temperature levels being sensed by said coolant temperature sensor means.
In one preferred embodiment, the controller means enables differing voltage levels to be supplied to said motor in response to differing coolant temperature levels being sensed by said coolant temperature sensor means.
In one embodiment, the voltage level is pulsed for a period on and a period off, with the percentage of voltage on or the magnitude of the voltage on relative to voltage off .periods increasing in response to sensed temperature level increases. Similarly the percentage of voltage on or the magnitude of the voltage on relative to the voltage off period may decrease in response to sensed temperature level decreases. Alternatively, a microprocessor may be used for infinitely varying voltage, on the size of pulsed voltage, in response to sensed temperature levels. In another embodiment, the voltage level is simply stepped from a minimum viable level to a maximum level in response to increased coolant sensed temperature levels. In a still further embodiment, a combination of the aforesaid pulsing of voltage and stepped increase of voltage levels might be used. Of course, voltage levels or the relative degree percentage of voltage pulsing on to off will decrease in response to decreases in coolant sensed .0 temperature levels.
In accordance with a still further aspect, the present invention provides an .0 15 arrangement for retrofitting to an internal combustion engine including a coolant pump means, an electric motor for driving said coolant pump means, a controller means, a coolant temperature sensor means, and connection means for connecting the coolant pump means and the coolant temperature sensor means into a coolant flow circuit of the engine, wherein said controller means is arranged to vary the speed of said electric motor by pulsing the voltage level supplied thereto, the voltage level supplied to the electric motor being pulsed for at least a period of operation of the engine for a period "on" and a period "off", with a percentage of the voltage "on" relative to the voltage "off" increasing in response to the coolant temperature level increasing as sensed by said coolant temperature sensor means, and wherein said controller means enables differing voltage levels to be supplied to said electric motor in response to differing coolant temperature levels being sensed by said coolant temperature sensor means.
The present invention also provides a method of cooling an internal combustion engine having a coolant flow circuit and a coolant pump adapted, when operated, to cause coolant flow around said coolant flow circuit, said coolant pump being driven by an electric motor independently of said engine, the method including the steps of: providing a coolant temperature sensor for sensing the temperature of said coolant; controlling the speed of said electric motor by pulsing the voltage level supplied thereto, the voltage level being pulsed for at least a period of operation of the engine for a period "on" and a period "off', with a percentage of the voltage "on" relative to the voltage "off' increasing in response to the coolant temperature level increasing as sensed by said coolant temperature sensor; and supplying differing voltage levels to said motor in response to differing coolant temperature levels being sensed by said coolant temperature sensor.
Further preferred features and aspects of the present invention may be seen from the annexed patent claims which are hereby made part of this specification.
Various aspects of the present invention will be more readily understood from the following description given in relation to the accompanying drawings, in 15 which:o• o WO 00/31388 PCT/AU99/01042 4 Fig 1 illustrates schematically a typical prior art vehicle engine cooling configuration; Fig 2 illustrates schematically a first preferred embodiment according to this invention; and Fig 3 illustrates schematically a second preferred embodiment according to this invention.
Referring to Figure 1 of the annexed drawings, the conventional arrangement comprises a vehicle engine block 10 and radiator or heat exchanger 12 with its associated fan 13. A coolant flow circuit 14 is shown which has a first part 15 located within the engine block 10, a second part 16 located within the radiator 12 and upper and lower hose connections 17, 18. A coolant impeller pump 19 is provided and driven mechanically by a belt and pulley drive (not shown) from the engine drive shaft. A thermostatically controlled valve 20 directs coolant either to the radiator via hose 17 or to the pump 19 via passage 21 depending on the temperature of the engine block.
That is, when the engine is cold, the coolant is circulated via passage 21 and the engine block part of the coolant flow circuit 15 until the engine temperature reaches a predetermined level and thereafter coolant flow is established through the radiator 12. In this arrangement, there is no coolant flow while the engine is not operating, and while the engine is operating, coolant flow volumes are related to engine rotational speed.
Figure 2 illustrates a modification to the conventional system shown in Figure 1 in accordance with the present invention. In this arrangement, it is proposed to retrofit an existing arrangement with a coolant flow device according to the present invention although it may be possible to have a similar arrangement as original equipment. In this system a pump device 22, driven conveniently by a separate electric motor M, is installed in the lower radiator hose 18. It will of course be apparent that the device 22 could also be installed in the upper hose 17 but with the arrangement illustrated, cavitation in the pump is likely to be avoided. With this retrofitted arrangement, the impeller of the existing pump 19 is simply removed and its shaft is then freely rotatable and does not act as a pump and further any drag is minimised. The pump 22 may WO 00/31388 PCT/AU99/01042 be arranged to operate substantially continuously while the ignition is turned on, or alternatively, it may be turned on and off depending upon thermal requirements, for example in response to a temperature sensor sensing engine block temperatures. At start up of the engine, coolant may be allowed to circulate through the circuit 14 including the radiator by providing a small hole (restricted flow passage) in the thermostatically controlled valve 20 at a very low rate until the valve itself opens upon the engine heating to the required temperature level or alternatively the thermostat may be removed.
Figure 3 illustrates a still further possible arrangement which may be retrofitted to an existing system, or may be formed as original equipment. The pumping device 22 driven by an independent drive means such as an electric motor M may be, as illustrated, located in the lower hose 18. Alternatively, it may be located in the upper hose 17, in the radiator 12, at the inlet outlet to the radiator 12, or as part of the engine block 10. In one possible arrangement, the independent electric motor may be connected to the existing pump device 19 in the engine block if the pump device 19 is adapted to provide suitable coolant flow rates. Conveniently, the motor M may, in one embodiment, be turned on or off by a temperature switch 23 sensing engine block temperature.
In a still further preferred embodiment, the electric motor M might be drivable at variable speeds in response to voltage levels applied to the motor M.
Thus when the temperature sensor 23 in this case senses coolant temperatures less than a predetermined minimum, the motor M is not operated. When the predetermined minimum temperature is sensed, a controller device C activates the motor M at a minimum voltage level sufficient to operate the motor M to drive the pump 22. The minimum temperature level may, for example, be about 800C and in one preferred arrangement the minimum voltage level may be between 1.4 and 2.1 volts. At increased temperature levels, the controller device C progressively increases the voltage level applied to the motor M in response to increases in sensed temperature increases associated with the coolant via the coolant temperature sensor 23.
Increases in applied voltage levels to the motor M will increase the speed of the motor and therefore the pump 22 thereby increasing coolant flow rates.
WO 00/31388 PCT/AU99/01 042 6 Conversely, should the coolant sensed temperature drop progressively, then the voltage level applied to the motor M determined by the controller C will also drop. The aforesaid increases and decreases may conveniently occur in a step wise manner. In one preferred arrangement, up to a minimum coolant temperature (about 800C), the pump 22 does not run at all. In another arrangement the pump may run continuously and up to a predetermined coolant temperature (say about 80 0 the pump 22 may run at a minimum speed, increasing therefrom on sensing increased coolant temperatures. Between the aforesaid minimum coolant temperature and an intermediate temperature, say about 900C, the motor M is pulsed at the minimum voltage (for example 2.10 Volts) for a certain period on and a certain period off (for example 2 seconds on and 5 second off). From the intermediate sensed temperature up to a maximum temperature (about 1000C), the controller C constantly arranges the supply of voltage to the motor M which is increased in preset voltage stages in response to sensed temperature levels from the minimum voltage level (for example 2.1 Volts) up to the maximum voltage level (12 Volts) when the temperature sensed is 1000C or higher.
With an arrangement as illustrated and as described herein, it is possible to have the pump run on for a short period after the engine itself stops running which may be beneficial in some applications. With such arrangements, it is also possible to have the coolant pump controlled by a vehicle management computer that may or may not control the thermostatically controlled coolant valve and the electric fan for the radiator. For example, at a preset temperature level about 980C) the electric fan 13 may be activated to boost the cooling capacity of the system.
Claims (39)
1. A coolant system for an internal combustion engine, said coolant system including a coolant flow circuit for a coolant which in part includes passage means for the coolant through an engine block of the engine and through a heat exchanger, said coolant system further including a coolant pump means adapted, when operated, to cause coolant flow around said coolant flow circuit, said coolant pump means being driven by an electric motor independently of said engine, and a coolant temperature sensor means and controller means to control coolant flow delivery output from said coolant pump in response to differing coolant temperature levels being sensed by said coolant temperature sensor means, said controller means being arranged to vary the speed of said electric motor by pulsing the voltage level supplied thereto, the voltage level being pulsed for at least a period of operation of the engine for a period "on" and a period "off, with a percentage of the voltage "on" relative to the voltage "off" increasing in response to the coolant temperature level increasing as sensed by said coolant temperature sensor means.
2. A coolant system according to claim 1, wherein said controller means enables differing voltage levels to be supplied to said motor in response to differing coolant temperature levels being sensed by said coolant temperature sensor means.
3. A coolant system according to claim 1 or claim 2 wherein the electric motor is a dual speed motor.
4. A coolant system according to claim 1 or claim 2 wherein the electric motor is a variable speed motor. A coolant system according to any one of claims 1 to 4 wherein the pump means is located in a lower heat exchanger hose leading from the heat exchanger to the engine block.
LT PCT/AU99/01042 Received 11 October 2000 8
6. A coolant system according to any one of claims 1 to 4, wherein the pump means is located in an upper heat exchanger hose leading from the engine block to the heat exchanger.
7. A coolant system according to claim 2, wherein the voltage levels supplied to the electric motor is stepped between two levels being a minimum viable voltage level and a maximum voltage level, in response to the sensed coolant temperature level increasing beyond a first predetermined level as sensed by the coolant temperature sensor means.
8. A coolant system according to claim 7, wherein the voltage level supplied to the electric motor is stepped from said maximum voltage level to said minimum viable voltage level in response to the sensed coolant temperature level decreasing beyond a second predetermined level as sensed by the coolant temperature sensor means.
9. A coolant system according to claim 7 or claim 8, wherein the voltage level supplied to the electric motor includes at least one intermediate voltage level between said minimum viable voltage level and said maximum voltage level.
A coolant system according to any one of claims 7 to 9, wherein at any said voltage level, the voltage level is pulsed "on" or "off' with the ratio of "on" to "off' increasing in response to the sensed coolant temperature level increasing as sensed by said temperature sensor means.
11. A coolant system according to any one of claims 1 to 10, wherein the coolant temperature sensor means is arranged to sense the coolant temperature either as it leaves the engine block or between the engine block and the heat exchanger.
12. A coolant system according to any one of claims 1 to 11, wherein the period "on" is at least one second. 9
13. An arrangement for retrofitting to an internal combustion engine including a coolant pump means, an electric motor for driving said coolant pump means, a controller means, a coolant temperature sensor means, and connection means for connecting the coolant pump means and the coolant temperature sensor means into a coolant flow circuit of the engine, said controller means being arranged to vary the speed of said electric motor by pulsing the voltage level supplied thereto, the voltage level supplied to the electric motor being pulsed for at least a period of operation of the engine for a period "on" and a period "off", with a percentage of the voltage "on" relative to the voltage "off" increasing in response to the coolant temperature level increasing as sensed by said coolant temperature sensor means.
14. An arrangement according to claim 13, wherein said controller means enables differing voltage levels to be supplied to said electric motor in response to differing coolant temperature levels being sensed by said coolant temperature sensor means.
An arrangement according to claim 13 or claim 14, wherein the period "on" is at least one second.
16. A coolant system for an internal combustion engine, said coolant system including a coolant flow circuit for a coolant which in part includes passage means for the coolant through an engine block of the engine and through a heat S" exchanger, said coolant system further including a coolant pump means adapted, when operated, to cause coolant flow around said coolant flow circuit, said coolant pump means being driven by an electric motor independently of said engine, and a coolant temperature sensor means and controller means to control coolant flow delivery output from said coolant pump in response to differing coolant temperature levels being sensed by said coolant temperature sensor means, wherein said controller means is arranged to vary the speed of said electric motor by pulsing the voltage level supplied thereto, the voltage level being pulsed for at least a period of operation of the engine for a period "on" and a eriod "off', with a percentage of the voltage "on" relative to the voltage "off" increasing in response to the coolant temperature level increasing as sensed by said coolant temperature sensor means, and wherein said controller means enables differing voltage levels to be supplied to said motor in response to differing coolant temperature levels being sensed by said coolant temperature sensor means.
17. A coolant system according to claim 16 wherein the electric motor is a dual speed motor.
18. A coolant system according to claim 16 wherein the electric motor is a variable speed motor.
19. A coolant system according to claim 16 wherein the pump means is located in a lower heat exchanger hose leading from the heat exchanger to the engine block.
A coolant system according to claim 16, wherein the voltage levels supplied to the electric motor is stepped between two levels being a minimum viable voltage level and a maximum voltage level, in response to the sensed coolant temperature level increasing beyond a first predetermined level as sensed by the coolant temperature sensor means.
21. A coolant system according to claim 20, wherein the voltage level supplied to the electric motor is stepped from said maximum voltage level to said minimum viable voltage level in response to the sensed coolant temperature level decreasing beyond a second predetermined level as sensed by the coolant temperature sensor means.
22. A coolant system according to claim 20, wherein the voltage level supplied to the electric motor includes at least one intermediate voltage level between said minimum viable voltage level and said maximum voltage level.
23. A coolant system according to claim 20, wherein at any said voltage level, the voltage level is pulsed "on" or "off' with the ratio of "on" to "off" increasing in 11 response to the sensed coolant temperature level increasing as sensed by said temperature sensor means.
24. A coolant system according to claim 16, wherein the coolant temperature sensor means is arranged to sense the coolant temperature either as it leaves the engine block or between the engine block and heat exchanger.
A coolant system according to claim 16, wherein the period "on" is at least one second.
26. An arrangement for retrofitting to an internal combustion engine including a coolant pump means, an electric motor for driving said coolant pump means, a controller means, a coolant temperature sensor means, and connection means .for connecting the coolant pump means and the coolant temperature sensor -means into a coolant flow circuit of the engine, wherein said controller means is arranged to vary the speed of said electric motor by pulsing the voltage level supplied thereto, the voltage level supplied to the electric motor being pulsed for at least a period of operation of the engine for a period "on" and a period "off', with a percentage of the voltage "on" relative to the voltage "off' increasing in response to the coolant temperature level increasing as sensed by said coolant temperature sensor means, and wherein said controller means enables differing voltage levels to be supplied to said electric motor in response to differing coolant temperature levels being sensed by said coolant temperature sensor means.
27. An arrangement according to claim 26, wherein the period "on" is at least one second.
28. A method of cooling an internal combustion engine having a coolant flow circuit and a coolant pump adapted, when operated, to cause coolant flow around said coolant flow circuit, said coolant pump being driven by an electric motor independently of said engine, the method including the steps of: providing a coolant temperature sensor for sensing the temperature of said coolant; controlling the speed of said electric motor by pulsing the voltage level supplied thereto, the voltage level being pulsed for at least a period of operation of the engine for a period "on" and a period "off', with a percentage of the voltage "on" relative to the voltage "off' increasing in response to the coolant temperature level increasing as sensed by said coolant temperature sensor; and supplying differing voltage levels to said motor in response to differing coolant temperature levels being sensed by said coolant temperature sensor.
29. A method according to claim 28 including the step of: stepping the voltage level supplied to said motor between two levels being a minimum viable voltage level and a maximum voltage level, in response to the .46 sensed coolant temperature level increasing beyond a first pre-determined level as sensed by the coolant temperature sensor.
30. A method according to claim 28 including the step of: stepping the voltage level supplied to said motor from said maximum level to said minimum viable voltage level in response to the sensed coolant temperature level decreasing beyond a second predetermined level as sensed by the coolant temperature sensor.
31. A method according to claim 30, wherein the voltage level supplied to the electric motor includes -at least one intermediate voltage level between said :minimum viable voltage level and said maximum voltage level.
32. A method according to claim 29, wherein the voltage level supplied to the electric motor includes at least one intermediate voltage level between said minimum viable voltage level and said maximum voltage level.
33. A method according to claim 28 wherein the period "on" is at least one second.
34. A coolant system according to claim 16 wherein the controller means is arranged to supply the voltage to the electric motor as follows: 13 when the sensed coolant temperature is below a first predetermined temperature, the voltage is off; when the sensed coolant temperature is between the first predetermined temperature and a second predetermined temperature, the voltage is pulsed at an intermediate voltage level which is less than a maximum voltage level; and when the sensed coolant temperature is above the second predetermined temperature the magnitude of the voltage is increased from the intermediate voltage level to the maximum voltage level in response to the coolant temperature increasing beyond the second predetermined temperature.
A coolant system according to claim 34 wherein the period "on" is about 2 seconds and the period "off" is about 5 seconds.
36. An arrangement according to claim 26 wherein the controller means is arranged to supply the voltage to the electric motor as follows: when the sensed coolant temperature is below a first predetermined temperature, the voltage is off; when the sensed coolant temperature is between the first predetermined *i temperature and a second predetermined temperature, the voltage is pulsed at acaan intermediate voltage level which is less than a maximum voltage level; and when the sensed coolant temperature is above the second predetermined temperature, the magnitude of the voltage is increased from the intermediate voltage level to the maximum voltage level in response to the coolant temperature S•increasing beyond the second predetermined temperature.
37. An arrangement according to claim 36 wherein the period "on" is about two seconds and the period "off' is about 5 seconds.
38. A method according to claim 28 further including the steps of: when the sensed coolant temperature is below a first predetermined temperature, turning off the supply voltage to the motor; when the sensed coolant temperature is between the first predetermined temperature and a second predetermined temperature, pulsing the voltage 14 supplied to the motor at an intermediate voltage level which is less than a maximum voltage level; and when the sensed coolant temperature is above the second predetermined temperature, increasing the magnitude of the voltage supplied to the motor from the intermediate voltage level to the maximum voltage level in response to the coolant temperature increasing beyond the second predetermined temperature.
39. A method according to claim 38 wherein the period "on" is about 2 seconds and the period "off' is about 5 seconds. DATED this 24 th day of September 2002 DAVIES CRAIG PTY. LTD. WATERMARK PATENT TRADE MARK ATTORNEYS 290 BURWOOD ROAD HAWTHORN VICTORIA 3122 AUSTRALIA o *se* SKP/MEH P15560AUPC *o *9gong 0::
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU16444/00A AU756456B2 (en) | 1998-11-23 | 1999-11-23 | Vehicle engine coolant pump housing |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPP7241 | 1998-11-23 | ||
| AUPP7241A AUPP724198A0 (en) | 1998-11-23 | 1998-11-23 | Vehicle engine coolant pump housing |
| AU16444/00A AU756456B2 (en) | 1998-11-23 | 1999-11-23 | Vehicle engine coolant pump housing |
| PCT/AU1999/001042 WO2000031388A1 (en) | 1998-11-23 | 1999-11-23 | Vehicle engine coolant pump housing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU1644400A AU1644400A (en) | 2000-06-13 |
| AU756456B2 true AU756456B2 (en) | 2003-01-16 |
Family
ID=25616400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU16444/00A Ceased AU756456B2 (en) | 1998-11-23 | 1999-11-23 | Vehicle engine coolant pump housing |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU756456B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2656361A1 (en) * | 1976-12-13 | 1978-06-15 | Skf Kugellagerfabriken Gmbh | Cooling water pump for vehicle IC engine - is controlled by infinitely variable speed control from electric temp. detector |
| FR2384106A1 (en) * | 1977-03-16 | 1978-10-13 | Sev Marchal | IC engine cooling system - has pump driven by electric motor with control circuit receiving constant voltage input and variable input from temp. transducer |
| DE4123661A1 (en) * | 1991-07-17 | 1993-01-21 | Zikeli Friedrich Dipl Ing Th | COOLANT PUMP WITH UNDERFLUITY MOTOR (KPU) FOR CAR AND COMBUSTION ENGINES |
-
1999
- 1999-11-23 AU AU16444/00A patent/AU756456B2/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2656361A1 (en) * | 1976-12-13 | 1978-06-15 | Skf Kugellagerfabriken Gmbh | Cooling water pump for vehicle IC engine - is controlled by infinitely variable speed control from electric temp. detector |
| FR2384106A1 (en) * | 1977-03-16 | 1978-10-13 | Sev Marchal | IC engine cooling system - has pump driven by electric motor with control circuit receiving constant voltage input and variable input from temp. transducer |
| DE4123661A1 (en) * | 1991-07-17 | 1993-01-21 | Zikeli Friedrich Dipl Ing Th | COOLANT PUMP WITH UNDERFLUITY MOTOR (KPU) FOR CAR AND COMBUSTION ENGINES |
Also Published As
| Publication number | Publication date |
|---|---|
| AU1644400A (en) | 2000-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6425353B1 (en) | Vehicle engine coolant pump housing | |
| US6668766B1 (en) | Vehicle engine cooling system with variable speed water pump | |
| US6374780B1 (en) | Electric waterpump, fluid control valve and electric cooling fan strategy | |
| US6802283B2 (en) | Engine cooling system with variable speed fan | |
| US4423705A (en) | Cooling system for liquid-cooled internal combustion engines | |
| EP0172641A1 (en) | Engine cooling systems | |
| US6481390B1 (en) | Water pump with electronically controlled viscous coupling drive | |
| EP1605146B1 (en) | Coolant motor fan drive | |
| US6725812B1 (en) | Water pump driven by viscous coupling | |
| AU756456B2 (en) | Vehicle engine coolant pump housing | |
| US6772716B2 (en) | Method and system for controlling a cooling system of an internal-combustion engine | |
| AU9240798A (en) | Improvements relating to the liquid cooled I.C. engines | |
| DE69730477T2 (en) | Heater for vehicle | |
| KR100645244B1 (en) | Engine coolant distributor | |
| JP2004340082A (en) | Oil cooling device | |
| JP3513919B2 (en) | Water pump control device for internal combustion engine | |
| EP0343785A2 (en) | Cooling systems | |
| RU2697597C1 (en) | Heat carrier circulation control system in liquid cooling system | |
| JPS62282110A (en) | Control device for hydraulic-device type cooling fan | |
| KR100482115B1 (en) | water pump driving device of an engine | |
| EP1404950A1 (en) | Cooling system for a motor vehicle engine | |
| KR200166717Y1 (en) | Variable Discharge Water Pump | |
| KR0121165B1 (en) | Energy saving type cooling system of an engine | |
| JPS6367007B2 (en) | ||
| KR20050044022A (en) | Variable water pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) |