CN1030121A - injection and control system for internal combustion engine - Google Patents
injection and control system for internal combustion engine Download PDFInfo
- Publication number
- CN1030121A CN1030121A CN88103021A CN88103021A CN1030121A CN 1030121 A CN1030121 A CN 1030121A CN 88103021 A CN88103021 A CN 88103021A CN 88103021 A CN88103021 A CN 88103021A CN 1030121 A CN1030121 A CN 1030121A
- Authority
- CN
- China
- Prior art keywords
- pressure
- throttle valve
- pressure transducer
- valve
- connecting rod
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 10
- 238000002347 injection Methods 0.000 title abstract description 8
- 239000007924 injection Substances 0.000 title abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims abstract 6
- 239000000446 fuel Substances 0.000 claims description 23
- 239000007921 spray Substances 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 206010061688 Barotrauma Diseases 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D3/00—Controlling low-pressure fuel injection, i.e. where the fuel-air mixture containing fuel thus injected will be substantially compressed by the compression stroke of the engine, by means other than controlling only an injection pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/52—Arrangement of fuel metering devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/16—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors
- F02M69/18—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors the means being metering valves throttling fuel passages to injectors or by-pass valves throttling overflow passages, the metering valves being actuated by a device responsive to the engine working parameters, e.g. engine load, speed, temperature or quantity of air
- F02M69/20—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors the means being metering valves throttling fuel passages to injectors or by-pass valves throttling overflow passages, the metering valves being actuated by a device responsive to the engine working parameters, e.g. engine load, speed, temperature or quantity of air the device being a servo-motor, e.g. using engine intake air pressure or vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
An internal combustion engine injection and control system has a nozzle 32 for injecting at least one fluid and pressure sensors 17, 19 for a gas-operated control valve 26 or the like. A first pressure sensor 17 is installed behind the throttle valve 15 to detect the air charge coefficient of the engine. A second pressure sensor 19 is installed before the throttle valve to detect the pressure in the intake passage 14. The output signals or displacements generated by the two pressure sensors are coordinated and combined to control the respective independent throttle valves 26. The total output signal or displacement is composed of the output signals or displacements of the two pressure sensors.
Description
The present invention relates to the injection and the control system of internal-combustion engine.This system has the jet pipe that is used to spray at least a fluid (as fuel and/or additive), and be communicated with intake duct on the closure both sides, by the pressure transducer of air Mixture manipulation.Described throttle valve of pressure transducer control or kindred organization.
Fuel injection system is compared with vaporizer, and its advantage is that all this motors are sensitiveer to the reaction of quickening, and maximum output is higher and Economy is better.This is because the more efficiently cause of fuel distribution.The shortcoming of fuel injection system is: cost is than higher, the structure more complicated, and also M R work must be done by the expert.No matter be that mechanical system or electronics are not always the case, and electronics is just more complicated.If in motor, add liquid, as add water or alcohols, the control of ejecting system will become more complicated so.
Another problem of conventional ejecting system is the fuel-feed valve.Owing to requiring it to have highi degree of accuracy become very expensive (particularly when requiring sleeve good linearity and stroke long).It is exactly jet pipe more complicated general on the market that a problem is arranged again, and may be difficult to reach desirable injection direction.In addition, they can not bear the corrosion of liquid, and have because of the out-of-work trend of the pollution of fuel or combustion gas.If the opening of jet pipe strengthens, the problem of the atomization of liquid can appear again.Especially true under the situation of low-load.
The purpose of this invention is to provide a kind of control gear, control at least one throttle valve, to measure the fuel duty that is suitable for various load conditions.Control gear also can be controlled a plurality of throttle valve, and each valve is corresponding to different fluids, main fuel for example, additional fuel or similar material.Another object of the present invention provides a kind of good linearity, and the long and low throttle valve of cost of stroke provides an atomising device simple in structure, can spray into small volume of fluid in cylinder when the motor suction stroke simultaneously.Above-mentioned purpose realizes by the described feature of claim.
Embodiment referring now in the accompanying drawing, described the present invention:
Fig. 1 is a sketch that the internal-combustion engine of control gear of the present invention is housed.
Fig. 2 is the enlarged view of overlooking of the present invention's double-control apparatus of controlling two throttle valve, and one of them valve is only controlled a kind of fluid.
Fig. 3 is the side view of the control gear of Fig. 2.
Fig. 4 is that front view cuts open in the office of another embodiment of the present invention.
Fig. 5 is the sectional view along throttle valve axis of the present invention.
Fig. 6 is the cross-sectional view of valve among Fig. 5.
Fig. 7 is the partial sectional view of the improved throttle valve of the present invention.
Fig. 8 is the amplification view of fuel valve feed pipeline front end.
Among Fig. 1, control gear of the present invention is installed on the internal-combustion engine 12 and (has only drawn a cylinder of internal-combustion engine here).Closure 15 is installed on the intake duct 14 in a conventional manner.Closure is driven (not shown) by the device as throttle control and so on.Below closure 15, be connected to conduit 16 on the intake duct 14, this conduit links to each other with first pressure transducer 17; And above closure, the pressure transducer 19 that has another to link to each other by pipeline 18.Two pressure transducers 17 and 19 have identical construction, and the negative pressure that is far longer than closure top by closure 15 below negative pressure that is not both of its size determines.Act on respect to atmospheric variation in pressure on the diaphragm 20 of two pressure transducers, bar 21 and 22 are housed on these diaphragms.Bar 21 all links to each other with first connecting rod 23 with 22 free end, has constituted the part of control gear 11.Second connecting rod 24 telescopicallies link to each other with above-mentioned first connecting rod 23, and can adorn any position thereon.The other end of connecting rod 24 acts on lever 25, thus control throttle valve 26, and throttle valve 26 is parts of supplying fuel for internal combustion engine system.Fuel supply system comprises fuel tank 27, charging pump 28 and filter 29, and they link to each other with throttle valve 26 by conduit 30.From throttle valve 26 extraction catheters 31, every conduit leads to a cylinder, feeds jet pipe 32.Jet pipe 32 can be the free end of conduit 31 or jet pipe 33.In order to change the effective length of lever 25, the connection of lever 25 is made adjustable, so just can obtain bigger adjusting possibility.
Under the idling situation, when closure 15 almost closed valve fully, the negative pressure of closure below was very big, withdrew fully to the bar 22 that makes pressure transducer 17, so connecting rod 23,24 is pushed lever 25 to closed position (as shown in Figure 1), the fuel quantity that infeeds jet pipe 32 has just been reduced to minimum.Pressure transducer 19 is transferred to the state that air flows influences when not being subjected to idling, the position of the fuel when throttle valve 26 is adjusted to for idling.
When closure 15 was opened, the negative pressure in the closure 15 below intake ducts 14 reduced, so throttle valve 26 is opened in spring 34 elongations, thereby increased fuel supply.When engine speed was accelerated, more air was inhaled into intake duct, and pressure transducer 19 shrinks its bar 21, increased the fuel flow rate of throttle valve 26 like this by connecting rod 23,24.When rotating speed reaches when stablizing, if closure does not have standard-sized sheet, then closure 15 belows can form negative pressure again, and this just means that pressure transducer 17 regains bars 22, turns down throttle valve 26.
Control gear of the present invention can pass through each independently control system control multiple fluid.For example, first kind of medium is gasoline, diesel oil or straight run, and second kind of medium can be water and the alcohols that is impregnated with antifreezing solution, and as ethanol or methyl alcohol, medium also can be the gas that is suitable for, as liquefied petroleum gas (LPG).
Fig. 2 and Fig. 3 have expressed an embodiment who uses two kinds of different fluid, pressure transducer 19a wherein and 19b will be contained on the engine body 12, pressure transducer 17a and 17b then are contained on the armed lever 25 of each throttle valve 26a and 26b, and the connecting rod 21 on the sensor diaphragm and 22 links together by connecting rod 23.
Any one increases as the pressure among the pressure transducer 17a in the pressure transducer, and then another pressure transducer 19a also will play some impetuses more or less.The flexible pressure transducer that makes that is to say pressure transducer 17a upper diaphragm and connecting rod moves, thereby moves dress armed lever 25 thereon.
The method that another kind is finished control task as shown in Figure 4.Two sensors 17 and 19 are hard-wired, and the bar 21 on the diaphragm links to each other with 37 with slide block 36 separately with 22, and slide block is loaded in the guiding valve 38 jointly.Slide block 36 and 37 is opened big or is turned down on the guiding valve aperture of fuel outlet separately.These fuel outlets link to each other with the conduit 31 of feed by manifold, and every conduit leads to a cylinder.When in the intake duct during variation in pressure, guiding valve 38 will be measuring fuel quantity with identical mode noted earlier, and supply with an amount of combustion amount according to every kind of load condition.The guiding valve of finishing same task or kindred organization's slide block 36 and 37 that each pressure transducer all can have separately also can be made as shown in Figure 5 the such structure of slide block 41.
Throttle valve 26 among Fig. 5 has a column slide block 41, and there is a very long coniform chamfering 42 the slide block end.Have fuel outlet 43 on the housing 44 of throttle valve 26, a cylinder 13 is led in each outlet, and outlet is opened on sustained height symmetrically.Can make low cost of manufacture, good linearity and stroke long like this.For example, if the diameter of fuel outlet 43 is 1 millimeter, the angle of circular cone 42 is 2 degree, and the stroke of slide block is with regard to nearly 8 millimeters so.In this case, except the beginning 1 millimeter, the fuel delivery of valve all is linear.First millimeter also is linear if desired, and opening 43 can be made into squarely or circular so, and that circular cone is not initial part is made by the classification angle that carries out the transition to predetermined chamfering gradually.Fuel outlet 43 also can be made wide shallow grooves, and slide block 41 does not just need tapered segment 42 so, perhaps shallow grooves and circular cone is joined together to work, and angle can be about 2 degree, and tapering or gradient can change in the scope at 10: 1 to 40: 1.
As shown in Figure 1,14 of cylinder head 45 and intake ducts have a hole, and jet pipe 32 is mounted in it, and this jet pipe is used in cylinder supplying with fluid, for example fuel or be mixed with the water of antifreezing solution.Different with the pressure that jet pipe spout 47 places produce for the pressure that makes gaseous medium, jet pipe 32 is surrounded by second sleeve pipe 46, and forms a space betwixt, and they can be close to intake valve and install, and faces the firing chamber of motor.Above-mentioned medium can be an air, at this moment only needs the atmosphere that sleeve pipe 46 and cylinder body is outer to communicate; Medium also can be the waste gas that motor is discharged, and under certain pressure, waste gas feeds sleeve pipe by conduit 20; Medium also can be a pressurized gas, for example the air of drawing from pressurized machine on a small quantity.
Preferably making a pipe box and be contained in the interior structure of another pipe, is that fluid and medium form an annular channel.Therefore fact proved that the atomizing of funnel shape spout convection cell and medium is very important, the end of jet pipe 32 can be designed to funnel shapedly that and the diameter of the outlet 49 of sleeve pipe 46 is less than the diameter of the interior spout 47 of jet pipe 32.
Control gear of the present invention can be combined with above-mentioned injection apparatus, also can use as indicating device individually.The armed lever 25 or the corresponding device thereof of throttle valve can also be loaded onto pointer 40, as the fuel-economizing display device, for the driver shows the oil consumption situation.
The invention is not restricted to each embodiment shown in the figure, its most of types can comprise within the scope of the claims.It can link to each other by second connecting rod 24 a more than throttle valve 26 with connecting rod 23, be used for distributing one or more media, and the electrical output signal that also can utilize pressure transducer to produce is controlled at least one throttle valve.
Claims (10)
1, a kind of internal-combustion engine sprays and control system, has the jet pipe (32) that sprays at least a fluid such as fuel and/or additive, with the pressure transducer (17,19) that can handle by gas, this sensor separately with the internal communication of the intake duct (14) on closure (15) both sides, described pressure transducer control valve (26) or similar means, it is characterized in that: first pressure transducer (17) is installed in closure (15) afterwards, the below of closure just is in order to the volumetric efficiency of detection of engine; Directly be subjected to be installed in before the closure by second pressure transducer (19) that the engine charge air-flow is handled, just above it, in order to detect the pressure in the intake duct (14), output signal or displacement that two pressure transducers (17,19) produce are coordinated and synthetic, in order to control throttle valve (26) independently separately, their total output doubly number or displacement form by the output signal or the displacement of two pressure transducers.
2, the system as claimed in claim 1, it is characterized in that: control gear (11) by the first connecting rod (23) that is hinged with two pressure transducers (17,19) with constitute with the adjustable second connecting rod (24) that is connected of first connecting rod, so that make second connecting rod can be installed in diverse location on the first connecting rod (23), its other end then is used for handling throttle valve (26).
3, the system as claimed in claim 1 is characterized in that: above-mentioned two pressure transducers match with two valves or slide block (36,37) in the guiding valve (38) separately.
4, the system as claimed in claim 1 is characterized in that: above-mentioned each pressure transducer is subjected to the effects of air pressure in the intake duct, and this influence is that the action by at least one elastic element (34,35) produces.
5, the system as claimed in claim 1 is characterized in that: the electrical output signal of above-mentioned each pressure transducer (17,19) each measuring point upward pressure and air-flow in intake duct.Be used for controlling throttle valve (26).
6, the system as claimed in claim 1, wherein throttle valve (26) comprises two surfaces that are close to mutually, also can relatively move, one of them face has at least one fluid output, another face relies on its residing diverse location and opens or close outlet, it is characterized in that: in the part of described opening internal surface, perhaps in the very near zone of opening, very little gradient or tapering are arranged, chamfer length is far longer than its height with respect to the horizontal plane, also is far longer than the diameter of fluid output simultaneously.
7, the system as claimed in claim 1 is characterized in that: described gradient or tapering changed between 40: 1 to 10: 1, were preferably 30: 1.
8, the system as claimed in claim 1, it is characterized in that: each jet pipe 32 is made of a feeder sleeve, feeder sleeve is surrounded by a sleeve pipe, form at least one funnel-shaped orifice around the feeder sleeve outlet, funnel-shaped orifice has the pressure that is different from outside the funnel-shaped orifice over against the firing chamber of motor in the sleeve pipe, the sleeve pipe of supply gas medium outlet simultaneously and feeder sleeve outlet are close to arrangement, and be close to the suction port of firing chamber, suction port is made of valve and valve seat.
9, system as claimed in claim 8 is characterized in that: described sleeve pipe communicates with atmosphere.
10, system as claimed in claim 8 is characterized in that: advance feeder sleeve (19) and medium supplying pipe (20) has a common outlet (22), the width of outlet (22) is less than the width of the spout of supplying pipe (19).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8701609-3 | 1987-04-16 | ||
| SE8701609A SE457211B (en) | 1987-04-16 | 1987-04-16 | Injection and regulating system for internal combustion engines |
| SE8702013-7 | 1987-05-15 | ||
| SE8702013A SE457279B (en) | 1987-05-15 | 1987-05-15 | Injection and regulating system for internal combustion engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1030121A true CN1030121A (en) | 1989-01-04 |
Family
ID=26659776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88103021A Pending CN1030121A (en) | 1987-04-16 | 1988-04-16 | injection and control system for internal combustion engine |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0358658A1 (en) |
| KR (1) | KR890700742A (en) |
| CN (1) | CN1030121A (en) |
| AU (1) | AU1629888A (en) |
| WO (1) | WO1988008076A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434683C (en) * | 2005-01-31 | 2008-11-19 | 西门子公司 | Method for monitoring the functional capability of a fuel injection system |
| CN100441846C (en) * | 2005-08-02 | 2008-12-10 | 株式会社京浜 | Suction Negative Pressure Detection Device for Throttle Valve Body |
| CN100465418C (en) * | 2004-12-24 | 2009-03-04 | 西南师范大学 | Motorcycle Adaptive Transmission Sensing Device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102349710A (en) * | 2011-10-28 | 2012-02-15 | 江苏红豆实业股份有限公司 | Coat with inflatable back |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB155537A (en) * | 1920-09-24 | 1920-12-23 | Walter Henry Howell | Improved means for enabling an earthenware tea-pot, jug or other like utensil to be used when the handle thereof has been broken |
| IT985679B (en) * | 1972-06-19 | 1974-12-10 | Vergasser Gmbh U Co Kg Deutsch | FUEL REGULATOR FOR INDEPENDENT IGNITION INTERNAL COMBUSTION MOTORCYCLES |
| GB1546074A (en) * | 1975-05-15 | 1979-05-16 | Tecalemit Ltd | Fuel injection systems for internal combustion engine |
-
1988
- 1988-04-16 CN CN88103021A patent/CN1030121A/en active Pending
- 1988-04-18 WO PCT/SE1988/000197 patent/WO1988008076A1/en not_active Ceased
- 1988-04-18 EP EP88903463A patent/EP0358658A1/en not_active Withdrawn
- 1988-04-18 AU AU16298/88A patent/AU1629888A/en not_active Abandoned
- 1988-04-18 KR KR1019880701688A patent/KR890700742A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465418C (en) * | 2004-12-24 | 2009-03-04 | 西南师范大学 | Motorcycle Adaptive Transmission Sensing Device |
| CN100434683C (en) * | 2005-01-31 | 2008-11-19 | 西门子公司 | Method for monitoring the functional capability of a fuel injection system |
| CN100441846C (en) * | 2005-08-02 | 2008-12-10 | 株式会社京浜 | Suction Negative Pressure Detection Device for Throttle Valve Body |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1988008076A1 (en) | 1988-10-20 |
| AU1629888A (en) | 1988-11-04 |
| EP0358658A1 (en) | 1990-03-21 |
| KR890700742A (en) | 1989-04-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |