GB2084524A - Device for aiding efficient operation of an engine and transmission assembly - Google Patents
Device for aiding efficient operation of an engine and transmission assembly Download PDFInfo
- Publication number
- GB2084524A GB2084524A GB8030571A GB8030571A GB2084524A GB 2084524 A GB2084524 A GB 2084524A GB 8030571 A GB8030571 A GB 8030571A GB 8030571 A GB8030571 A GB 8030571A GB 2084524 A GB2084524 A GB 2084524A
- Authority
- GB
- United Kingdom
- Prior art keywords
- engine
- gear
- operating efficiency
- dependent
- speed
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0236—Circuits relating to the driving or the functioning of the vehicle for economical driving
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/42—Ratio indicator devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K37/00—Dashboards
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H2061/0015—Transmission control for optimising fuel consumptions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/84—Data processing systems or methods, management, administration
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Transmission Device (AREA)
Abstract
A device is disclosed, for a truck having a manual gearbox, to provide an indication to the driver as to whether a gear change should be made to obtain better fuel consumption. Three transducers 16, 18, 20 provide indications to the device of engine speed, road speed and throttle position. A ROM 32 is programmed with data relating to the gear ratios of the truck and to the fuel economy of the engine at different engine speeds and engine loads. A microprocessor unit 30 is programmed by the ROM 32 to calculate from the gear and fuel economy data and the indications from the transducers the fuel economy in the present gear and those which would be obtained in the next higher and lower gears for the same road speed and road load, to compare the fuel economies and to illuminate one of three indicators 42, 44, 46, visible to the driver depending upon whether a downward change, no change, or an upward change of gear is necessary. <IMAGE>
Description
SPECIFICATION
Device for aiding efficient operation of an engine and transmission assembly
This invention relates to devices for aiding sufficient operation of internal combustion engines and transmission assemblies having a plurality of selectable. gears to drive an output shaft,
According to the invention there is provided such a device comprising memory means in which is stqred information relating selected operating parameters of the engine to the operating efficiency (as hereinafterdefined) of the engine, automatic processing means arranged to monitor information sufficient to define actual values for the selected operating parameters of the engine and the spewed of the qutput shaft and for determining therefrom and with reference to said memory means either that gear which provides optimum operating efficiency. at the same output shaft speed and'power as under the defined values or whether a gear change is required to improve the operating efficiency at the same output shaft speed and power as under the defined values, and indicator means responsive to said processing means for indicating either said optimum gear or whether a gear change is required, as the case may be.
The term "operating efficiency" as used herein is hereby defined as the.amoúnt of work produced by the engine in using a predetermined amount of fuel. Therefore, for a vehicle travelling at a constant speed with a constant road load and thus a constant output power (and also a constant engine-power assuming the transmission efficiency'to be constant), the operating efficiency will be proportional to the fuel economy of the vehicle as expressed in miles travelled per gallon of fuel used (kilometres perlitre).
The processing means may be arranged to determine whether or notan upward gear change is-re.quired to improve the operating efficiency and whether or not a downward'gear change is required to improve the operating efficiency, said indicator means being arranged to indicate whether an upward gear change is required or whether a downward gear change is required.
In this case, the processing means preferably includes means for determining, for the same output shaft speed and power, the operating efficiency of the engine for the gear selected and for the next higher gear and for the next lower gear and means for determining for which of said three gears the engine would achieve the best operating efficiency.
The processing means is, preferably arranged to monitor the engine' speed.
Also, the processing'means is preferably arranged to monitor signals from which the engine load or the engine power can be determined and includes means for producing a signal dependent on engine load or engine power, as the case may be.
The processing means may also be arranged to monitor the gear selected.
Alternatively the processing means may be arranged to monitor signals from which the gear selected can be determined and may include means for producing a signal dependent on the gear selected. In this case and in the case where the processing means is arranged to monitor the engine speed, the processing means may be arranged to monitor the output shaft speed so that the gear selected can be determined from the output shaft speed and the engine speed.
The processing means preferably includes means for producing signals dependent on the engine speed which would be necessary in the next higher and next lower gears for the same output shaft speed.
The processing means may further include means for producing signals dependent on the engine loads which would be necessary in the next higher and next lower gears for the same transmission output power.
The memory means may relate engine speed and engine load to operating efficiency to produce signals dependent on the operating efficiencies of the engine in said gear selected and said next higher and next lower gears.
Alternatively, the memory means may relate engine speed and engine power to operating efficiency to produce signals dependent on the operating efficiencies of the engine in said gear selected and said next higher and next lower gears.
Preferably, the processing means includes means for comparing the said signals dependent on said operation efficiencies of the engine and means for providing an output signal dependent on that one of the threee gears for which the engine would provide the best operating efficiency.
The indicator means may comprise at least two visual indicators, the arrangement being such that one of the indicators is operated when a better operating efficiency of the engine would be achieved in a higher gear and such that the other indicator is operated when a better operating efficiency of the engine would be achieved in a lower gear.
The indicator means may also comprise a further visual indicator, the arrangement being such that the first indicator is operated when the best operating efficiency of the engine is achieved in the gear selected.
Alternatively, the indicator means may comprise a digital display which displays the number of said optimum gear.
The invention also provides a device as described above in combination with an engine speed transducer and/or a throttle position transducer and/or a transmission output speed transducer.
Furthermore, the invention provides a vehicle having an internal combustion engine and transmission assembly having a plurality of selectable gears driving at least one road wheel of the vehicle and a device as described above for aiding efficient operation of the engine and transmission assembly.
An embodiment of the device according to the invention will now be described by way of example, reference being made to the accompanying drawing which is a diagram of a device according to the invention.
The device illustrated in the drawing is intended for use in a truck having a manual gear box to provide an indication to the driver as to whether, for the speed at which the truck is travelling and the road-load, the engine would provide the best fuel economy in the gear selected or a higher gear (assuming the gear selected is not top gear) or a lower gear (assuming the gear selected is not bottom gear).
The device comprises a signal conditioning section 1.0 for receiving signals indicative of the operating state ofthe truck. The conditioning section 10 conditions the received signals and feeds the conditioned signals to a processing section 12. From the conditioned signals, the processing section 1 determines the gear ratio selected, the fuel economy in the gear selected, and, for the same road speed and road-load, the fuel economy which would be obtained in the next higher gear (if there be one) and the next lower (if, there be one).
The processing section 1 2 then determines which of the two or three gears in question would provide the best fuel. economy gives an output signal to an indicator 14 which gives a visual indication to the. driver that he should change-up, stay in the same gear, or,change-down.
The conditioning section. 1 0 receives three signals from which the operating state of the truck can be determined. The first signal is dependent on engine speed WN and is taken from a TDC transducer 1 6 on the engine's fly-wheel which provides pulses in direct relationship to the engine speed w,. The second signal is dependent on road speed V and is taken from a transducer 1 8 on the truck's tranmission or a road wheel which provides pulses in direct relationship to the road speed V. The third signal is dependent on throttle position x and is taken from a transducer 20 comprising a linear potentiometer having its slider connected for movement with part of the throttle operating mechanism for the engine to provide a signal dependent on the throttle position x.
The output from the engine speed WN transducer 1 6 is fed to a pulse shaper/buffer 22 and the output from the vehicle speed V transducer 18 is similarly fed to a pulse shaper/buffer 24. The output from the throttle position x transducer 20 is fed firstly to an analogue/digital converter 26 and then to a further
pulse shaper/buffer 28. The outputs from the pulse shaper/buffers 22, 24, are then fed to the processing section 1 2. The processing section
12 includes, a micro-processor unit 30 having a
ROM 32 and a RAM 34 to which the signals
dependent on engine speed WN, road speed V and throttle position x are fed. The micro-processor
unit 30 is programmed by the ROM 32 to
determine the following parameters.
(i) The engine load TN from the engine speed WN and the throttle position x;
(ii) The gear ratio rN selected from the engine speed WN and the road speed V;
(iii) The road-load F from the engine load TN and the gear ratio rN; (iv) The gear number N from the gear ratio rN; (v) The gear ratio rN~, and rN+, for the next lower and next higher gears from the gear numbers N - 1 and N + 1;
(vi) The engine speeds wN~1 and WN+1 corresponding to the same road speed V in the next lower and next higher gears N - 1 and N + 1 from the road speed V and the gear ratios rN~, and TN+1;;
N+1
(vii) The engine loads TN-1and Tun+1 corresponding to the same road load F in the next higher and next lower gears N - 1 and N + 1 from the road load F and the gear ratios r,~, -1 and run+,; and
(viii) The fuel economies EN1, EN, and EN+1 which would be achieved in the next lower gear N - 1, the gear selected N and the next higher gear N - 1 for the same road speed V and roadload F from the engine loads TN-1. TN. and Tun+1 and the engine speeds WN-1, w, and wN~1.
The micro-processor unit 30 compares the fuel economies EN1, EN and EN+1 to determine which of the gears N - 1, N, and N + 1 would provide the best fuel economy for the particular road speed V and road-load F, and provides signals to latch/drivers 36, 38, 40 dependent upon whether the driver should change-down, stay in the same gear or change-up.
In addition to storing the programme to be carried out by the micro-processor unit 30, the
ROM 32 is utilised to remember particular characteristics of the truck to which the device is to be fitted. In particular, in order that the operation described at (i) above can be performed, part of the ROM 32 provides a mapping of engine speeds w and throttle positions x on to engine loads T. Also, for operations (iv) and (v) above, part of the ROM 32 provides a mapping of gear ratios r on to gear numbers N and a mapping of gear numbers N on to gear ratios r. Furthermore, for operation (viii) above, part of the ROM 32 provides a mapping of engine loads T and engine speeds w on to fuel economies E.
The indicator 14 comprises a display panel, for mounting on the truck's dashboard, having three translucent portions 42, 44, 46, each provided with an electric light bulb. The portions 42 and 46 are coloured amber and each carries a representation of a gear stick and arrow, the arrow on portion 42 pointing downwardly and the arrow on portion 46 pointing upwardly to indicate, when lit, that a downward or an upward gear change is required. The portion 44 is coloured green to indicate, when lit, that the gear selected provides the best fuel economy. The bulbs for the portions 42, 44, 46 are connected to the outputs of the latch/drivers 36, 28, 40, respectively.
The device monitors the inputs signals from the transducers 1 6, 1 8, 20 at a fast rate and thereby provides, as far as the truck driver is concerned, a continuous up-dated indication as to whether or not a gear change is'required.
The device may be modified in a number of respects. For example, instead of monitoring road speed, the device may'monitor the gear which is selected. However, this would have the disadvantage especially with a transmission having many ratios that many switches would have to be provided or thetransmission. Also, instead of providing in the ROM'32 a mapping of engine loads'T and engine speed w on to fuel economies E, a mapping of, four example, engine powers and engine speeds on to fuel economies may be provided, the programming being modified accordingly. The programming for this latter modification may be simpler since it can be assumed that the engine power which would be required in the next higher and next lower gears would be the same as the engine power produced in the gear selected.
The device and modifications thereof described above provide an indication to the driver as to whether or not a gear change is required and, if so, whether upward or downward gear-change is required. The device may be further modified so that the fuel economies E in all available gears are determined. The gear which provides the best fuel economy is then determined and a signal is fed to a digital display mounted on the dashboard which displays the appropriate gear number for the best fuel economy.
Claims (22)
1. A device for aiding efficient operation of an internal combustion engine and transmission assembly having a plurality of selectable gears to drive an output shaft, comprising memory means in which is stored information relating selected operating parameters of the engine to the operating efficiency (as hereinbefore defined) of the engine, automatic processing means arranged to monitor information sufficient to define actual values for the selected operating parameters of the engine and the speed of the output shaft and for determining therefrom and with reference to said memory means either that gear which provides optimum operating efficiency at the same output shaft speed and power as under the defined values or whether a gear change is required to improve the operating efficiency at the same output shaft speed and power as under the defined values, and indicator means responsive to said processing means for indicating either said optimum gear or whether a gear change is required, as the case may be.
2. A device as claimed in claim 1, wherein said processing means is arranged to determine whether or not an upward gear change is required to improve the operating efficiency and whether or not a downward gear change is required to improve the operating efficiency, said indicator means being arranged to indicate whether an upward gear change is required or whether a downward gear change is required.
3. A device as claimed in claim 2, wherein said processing means include means for determining, for the same output shaft speed and power, the operating efficiency of the engine for the gear selected and for the next higher gear and for the next lower gear and means for determining for which of said three gears the engine would achieve the best operating efficiency.
4. A device as claimed in any one of the preceding claims, wherein the processing means is arranged to monitor the engine speed.
5. A device as claimed in any one of the preceding claims, wherein the processing means is arranged to monitor signals from which the engine load can be determined and includes means for producing a signal dependent on engine load.
6. A device as claimed in any one of claims 1 to 4, wherein the processing means is arranged to monitor signals from which the engine power can be determined and includes means for producing a signal dependent on the engine power.
7. A device as claimed in any one of the preceding claims, wherein the processing means is arranged to monitor the gear selected.
8. A device as claimed in any one of claims 1 to 6, wherein the processing means is arranged to monitor signals from which the gear selected can be determined and includes means for producing a signal dependent on the gear selected.
9. A device as claimed in claim 8 as dependent on claim 4, wherein the processing means is arranged to monitor the output shaft speed so that the gear selected can be determined from the output shaft speed and the engine speed.
10. A device as claimed in claim 4 and in any one of claims 7 to 9, wherein the processing means includes means for producing signals dependent on the engine speed which would be necessary in the next higher and next lower gears for the same output shaft speed.
11. A device as claimed in claim 5 and in any one of claims 7 to 9, wherein the processing means includes means for producing signals dependent on the engine loads which would be necessary in the next higher and next lower gears for the same transmission output power.
12. A device as claimed in claim 10 and claim 11, wherein the memory means relates engine speed and engine load to operating efficiency to produce signals dependent on the operating efficiencies of the engine in said gear selected and in said next higher and next lower gears.
13. A device as claimed in claim 6 and claim 10, wherein the memory means relates engine speed and engine power to operating efficiency to produce signals dependent on the operating efficiency of the engine in said gear selected and said next higher and next lower gears.
14. A device as claimed in claim 12 and claim 13, wherein the progressing means includes means for comparing said signals dependent on said operating efficiencies of the engine and
means for providing an output signal dependent
on that one of the three gears for which the engine
would provide the best operating efficiency.
15.:A device as claimed in claim 2 or any one of
claims 3 to 14 as dependent on claim 2, wherein
the indicator means comprises at least two visual
indicators, the arrangement being such that one of
the indicators is operated when a better operating
efficiency of the engine would be achieved in a
higher gear and such that the,other indicator is
operated when a better operating efficiency of the
engine would be achieved in a lower gear.
16. A device as claimed in claim 15, wherein
the indicator means comprises a further visual
indicator, the arrangement being such that the
further indicator is operated when the best operating efficiency of the engine is achieved in
the gear selected.
1 7. A device as claimed in claim 1 , wherein the
indicator means comprises a digital display which indicates the number of said optimum gear.
18. A device as claimed in claim 4 or any one of claims 5 to 16 as dependent on claim 4 in combination with an engine speed transducer.
19. A device as claimed in claim 1 8 as dependent on claim 5 or claim 6 in combination with a throttle position transducer.
20. A device as claimed in claim 18 or 1 9 as dependent on claim 8 in combination with a transmission output speed transducer.
21. A device substantially as hereinbefore described with reference to and as illustrated in the accompanying drawing.
22. A vehicle having an internal combustion engine and transmission assembly having a plurality of selectable gears driving at least one road wheel of the vehicle and a device as claimed in any one of the preceding claims for aiding efficient operation of the engine and transmission assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8030571A GB2084524B (en) | 1980-09-22 | 1980-09-22 | Device for aiding efficient operation of an engine and transmission assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8030571A GB2084524B (en) | 1980-09-22 | 1980-09-22 | Device for aiding efficient operation of an engine and transmission assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2084524A true GB2084524A (en) | 1982-04-15 |
| GB2084524B GB2084524B (en) | 1984-03-14 |
Family
ID=10516216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8030571A Expired GB2084524B (en) | 1980-09-22 | 1980-09-22 | Device for aiding efficient operation of an engine and transmission assembly |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2084524B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2530203A1 (en) * | 1982-07-17 | 1984-01-20 | Porsche Ag | CIRCUIT FOR PROVIDING AND PROVIDING AN INFORMATION SIGNAL FOR CHANGING THE REPORT OF A GEARBOX IN A MOTOR VEHICLE |
| EP0110857A1 (en) * | 1982-12-06 | 1984-06-13 | Ab Volvo | A self-teaching device for signalling to the driver of a vehicle that a gear change is indicated |
| EP0096352A3 (en) * | 1982-06-01 | 1984-12-19 | Nippondenso Co., Ltd. | Transmission control device for vehicle |
| WO1985001256A1 (en) * | 1983-09-21 | 1985-03-28 | Robert Bosch Gmbh | Process and circuit for determining the fuel consumption-optimum gear for an engine of a motor vehicle |
| FR2558780A1 (en) * | 1984-02-01 | 1985-08-02 | Steyr Daimler Puch Ag | AUXILIARY DEVICE FOR REACHING OPTIMUM CONDITIONS FOR THE CONDUCT OF UTILITY VEHICLES, IN PARTICULAR AGRICULTURAL TRACTORS ATTACHED TO WORKING INSTRUMENTS |
| EP0106789A3 (en) * | 1982-10-09 | 1985-11-21 | Westinghouse Fahrzeugbremsen Gmbh Wabco | Gear change indicator |
| US4723215A (en) * | 1984-09-28 | 1988-02-02 | Honda Giken Kogyo Kabushiki Kaisha | Method for indicating a vehicle operation in a fuel economy range for a vehicle with a manual transmission |
| EP0269942A3 (en) * | 1984-07-23 | 1988-10-12 | Eaton Corporation | Semi-automatic mechanical transmission control |
| EP0291183A3 (en) * | 1987-05-14 | 1989-07-26 | Eaton Corporation | Semi-automatic mechanical transmission control display and fault indicator |
| FR2863092A1 (en) * | 2003-12-02 | 2005-06-03 | Renault Sas | SYSTEM FOR DISPLAYING THE RECOMMENDED GEARBOX RATIO |
| US6944532B2 (en) | 1998-06-18 | 2005-09-13 | Cummins, Inc. | System for controlling an internal combustion engine in a fuel efficient manner |
| US6957139B2 (en) | 1998-06-18 | 2005-10-18 | Cummins, Inc. | System for controlling drivetrain components to achieve fuel efficiency goals |
| EP1860351A1 (en) * | 2006-05-26 | 2007-11-28 | Denso Corporation | Transmission operation instruction device |
-
1980
- 1980-09-22 GB GB8030571A patent/GB2084524B/en not_active Expired
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0096352A3 (en) * | 1982-06-01 | 1984-12-19 | Nippondenso Co., Ltd. | Transmission control device for vehicle |
| US4583171A (en) * | 1982-06-01 | 1986-04-15 | Nippondenso Co., Ltd. | Transmission control device for vehicle |
| FR2530203A1 (en) * | 1982-07-17 | 1984-01-20 | Porsche Ag | CIRCUIT FOR PROVIDING AND PROVIDING AN INFORMATION SIGNAL FOR CHANGING THE REPORT OF A GEARBOX IN A MOTOR VEHICLE |
| EP0106789A3 (en) * | 1982-10-09 | 1985-11-21 | Westinghouse Fahrzeugbremsen Gmbh Wabco | Gear change indicator |
| EP0106789B1 (en) | 1982-10-09 | 1987-03-04 | WABCO Westinghouse Fahrzeugbremsen GmbH | Gear change indicator |
| US4701852A (en) * | 1982-12-06 | 1987-10-20 | Ab Volvo | Method and device for signaling that gear change is required |
| EP0110857A1 (en) * | 1982-12-06 | 1984-06-13 | Ab Volvo | A self-teaching device for signalling to the driver of a vehicle that a gear change is indicated |
| WO1984002311A1 (en) * | 1982-12-06 | 1984-06-21 | Volvo Ab | Method and device for signaling that gear change is required |
| WO1985001256A1 (en) * | 1983-09-21 | 1985-03-28 | Robert Bosch Gmbh | Process and circuit for determining the fuel consumption-optimum gear for an engine of a motor vehicle |
| US4731727A (en) * | 1983-09-21 | 1988-03-15 | Robert Bosch Gmbh | Intelligent optimum-gear indication system |
| GB2154524A (en) * | 1984-02-01 | 1985-09-11 | Steyr Daimler Puch Ag | An arrangement for obtaining optimum operating values in commercial vehicles |
| US4885690A (en) * | 1984-02-01 | 1989-12-05 | Steyr-Daimler-Puch Ag | System for optimizing driving parameters in utility vehicles |
| FR2558780A1 (en) * | 1984-02-01 | 1985-08-02 | Steyr Daimler Puch Ag | AUXILIARY DEVICE FOR REACHING OPTIMUM CONDITIONS FOR THE CONDUCT OF UTILITY VEHICLES, IN PARTICULAR AGRICULTURAL TRACTORS ATTACHED TO WORKING INSTRUMENTS |
| EP0269942A3 (en) * | 1984-07-23 | 1988-10-12 | Eaton Corporation | Semi-automatic mechanical transmission control |
| US4800360A (en) * | 1984-07-23 | 1989-01-24 | Eaton Corporation | Vehicle display for current and allowable gear ratios |
| US4723215A (en) * | 1984-09-28 | 1988-02-02 | Honda Giken Kogyo Kabushiki Kaisha | Method for indicating a vehicle operation in a fuel economy range for a vehicle with a manual transmission |
| US4888577A (en) * | 1987-05-14 | 1989-12-19 | Eaton Corporation | Semi-automatic mechanical transmission control display and fault indicator |
| EP0291183A3 (en) * | 1987-05-14 | 1989-07-26 | Eaton Corporation | Semi-automatic mechanical transmission control display and fault indicator |
| US6944532B2 (en) | 1998-06-18 | 2005-09-13 | Cummins, Inc. | System for controlling an internal combustion engine in a fuel efficient manner |
| US6957139B2 (en) | 1998-06-18 | 2005-10-18 | Cummins, Inc. | System for controlling drivetrain components to achieve fuel efficiency goals |
| DE10133227B4 (en) * | 2000-07-14 | 2007-05-24 | Cummins Inc., Columbus | A system for controlling powertrain components to achieve fuel economy goals |
| FR2863092A1 (en) * | 2003-12-02 | 2005-06-03 | Renault Sas | SYSTEM FOR DISPLAYING THE RECOMMENDED GEARBOX RATIO |
| WO2005056343A1 (en) * | 2003-12-02 | 2005-06-23 | Renault S.A.S. | System for displaying a recommended gearbox ratio |
| EP1860351A1 (en) * | 2006-05-26 | 2007-11-28 | Denso Corporation | Transmission operation instruction device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2084524B (en) | 1984-03-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |