GB2146456A - Method and arrangement for controlling the combustion process in an internal combustion engine - Google Patents
Method and arrangement for controlling the combustion process in an internal combustion engine Download PDFInfo
- Publication number
- GB2146456A GB2146456A GB08417062A GB8417062A GB2146456A GB 2146456 A GB2146456 A GB 2146456A GB 08417062 A GB08417062 A GB 08417062A GB 8417062 A GB8417062 A GB 8417062A GB 2146456 A GB2146456 A GB 2146456A
- Authority
- GB
- United Kingdom
- Prior art keywords
- engine
- limit value
- operating range
- values
- dependence
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/15—Digital data processing
- F02P5/152—Digital data processing dependent on pinking
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/15—Digital data processing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2441—Methods of calibrating or learning characterised by the learning conditions
- F02D41/2445—Methods of calibrating or learning characterised by the learning conditions characterised by a plurality of learning conditions or ranges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2477—Methods of calibrating or learning characterised by the method used for learning
- F02D41/2483—Methods of calibrating or learning characterised by the method used for learning restricting learned values
-
- 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
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Electrical Control Of Ignition Timing (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
In an internal combustion engine (10), the combustion process is controlled by successively adjusting a variable quantity e.g. ignition timing, fuel supply, in dependence upon the instantaneous values of two different parameters e.g. map, rpm, subject to limitations dependent upon the portion of the operating range of the engine. Memory 18 stores values of the quantity corresponding to the values of the parameters. Memory 19 stores limiting values for the variable quantity in different parts of the operating range. Unit 22 forwards the output of memory 18 if it is within the limiting value, otherwise the output of memory 19 is forwarded. An adjustment for fuel type can be provided by unit 21. A knock sensor can be used to modify the contents of memory 19 by means of unit 28. The unit 28 can alternatively respond to undesirable levels of CO in the exhaust or engine temperature to modify the contents of memory 19. <IMAGE>
Description
SPECIFICATION
Method and arrangement for controlling the combustion process in an internal combustion engine
The present invention relates to a method for con trolling the combustion process in an internal combustion engine.
More particularly, the invention relates to such a method of the kind comprising effecting successive adjust ments of at least one variable quantity, having influence on the combustion process, in dependence upon the instantaneous values of two different operating parameters of the engine guided by individual rated values for said quantity for a plurality of different portions of the operating range of the engine, defined by predetermined intervals for the values of said two operating parameters.
In practice, said two operating parameters of the engine usually consist of the manifold pressure and the rotary speed of the engine. Moreover, the variable quantity subjected to successive adjustments usually consists of the ignition timing, i.e.
the moment for generating an ignition spark in a cylinder of the engine. Said moment may be defined either in terms of relative time or, most typically, in terms of the angular position of a rotary member of the engine. However, methods of the above kind may alternatively, or additionally, involve successive adjust ments of other variable quantities having influence on the combustion process in an internal combustion engine. Especially, they may be used to effect successive adjustments of the supply of a fluid or a fluid mixture to the combustion chambers in the engine. For instance, they may serve to effect successive adjustments of the supply of fuel and/or air to the engine. In engines provided with means for causing an injection of water into the combustion chambers, the method may also be used to control said water injection.
When controlling the combustion process in an internal combustion engine in accordance with a method of the above kind, it is necessary to ensure that the engine will not run the risk of becoming damaged by being permitted to operate in an unpermissible mode during any substantial time. Additionally, often it is also desirable to prevent the engine from operating in modes which, although not in volving any risk of damage to the engine, are undesirable for other reasons, for instance in view of environmental requirements.
In the prior art, the problem of preventing the engine from operating in an undesirable mode has usually been solved by selecting the rated values of said variable quantity in a manner offering an appropriate safety margin. However, this prior solution results in a considerable reduction of the maximum performance of the engine.
An object of the invention is to provide an improved method of the kind initially specified, which prevents the engine from operating in an undesirable mode for any appreciable time without causing any unnecessary excessive reduction of the engine performance.
In accordance with the invention,for this purpose, there is provided a method of said kind which is characterized by limiting the adjustment of said quantity within each one of at least some of said portions of the operating range of the engine in dependence upon at least one individual limit value for said quantity within the operating range portion in question, said limit value being selected so as to preyent the engine from assuming an undesirable operating condition.
The proposed limitation of the adjustment of the variable quantity may be made in dependence upon at least one predetermined fixed individual limit value for each concerned portion of the operating range of the engine. However, it may alternatively, or additionally, be made in dependence upon at least one variable individual limit value for each such operating range portion. In the latter case, the method according to the invention may preferably include the steps of detecting any dccurrence of at least one selected kind of undesirable operating condition of the engine and utilizing any detection of such an occurrence for determining a variable limit value for the operating range portion in question.
By way of example, undesirable operating conditions, which may deserve to be detected and utilized for the determination of variable limit values, are knocking in the engine, undesirable thermal conditions in the engine and undesirable conditions in the exhaust gases, for instance, with respect to their composition.
The invention also relates to an arrangement for controlling the combustion process in an internal combustion engine, said arrangement comprising adjustment means for effecting successive adjustments of at least one variable quantity, having influence on the combustion process, in dependence upon the instantaneous values of two different operating parameters of the engine guided by individual rated values for said quantity for a plurality of different portions of the operating range of the engine, defined by predetermined intervals for the values of said two operating parameters.In accordance with the invention, said arrangement is characterized in that said adjustment means are arranged to limit the adjustment of said quantity within each one of at least some of said portions of the operating range of the engine in dependence upon at least one individual limit value for said quantity within the operating range portion in question, said limit value being selected so as to prevent the engine from assuming an undesirable operating condition.
Below the invention will be described in further detail, reference being had to the accompanying drawings, in which:
Figure 1 shows a block diagram, illustrating an arrangement according to a first embodiment of the invention, selected by way of example only; while
Figure 2 shows a block diagram over an arrangement according to a second embodiment of the invention, also selected by way of example only.
In the following description, the illustrated arrangements will first be described as serving to control the combustion process in an internal combustion engine by effecting successive adjustments of the ignition timing during operation of the engine. Later on a brief description will also be given explaining how the illustrated arrangements may be used to effect successive adjustments of the fuel supply to an engine.
In Figure 1, reference numeral 10 designates an internal combustion engine which, for instance, may consist of a four cylinder four stroke piston engine. Engine 10 is provided with a manifold pressure transducer 11, an engine speed transducer 12 and a camshaft position transducer 13.
In Figure 1, said transducers and the four spark plugs 14 of the engine have been shown diagrammatically in dashed lines.
Transducers 11, 12 and 13 are connected to a signal conditioning unit 15 in which the output signals from said transducers may be subjected to any type of conditioning or transformation required in view of the intended subsequent use of said signals.
By means of usual spark plug leads, spark plugs 14 are connected to a drive circuit 24 which delivers the required high tension pulses to the spark plugs.
Reference numeral 16 designates an ignition timing adjustment circuit which, during operation of the engine, successively adjusts the ignition timing in dependence upon the existing values of the manifold pressure and the engine speed. Ignition timing adjustment circuit 16 comprises an address decoder 17, a rated value memory 18, a limit value memory 19, an adder 20, an adjustable correction value unit 21 and a comparator and selection unit 22.
Individual rated values for the ignition timing for a plurality of different portions of the operating range of the engine, corresponding to different intervals for-the values of the manifold pressure and the engine speed, are permanently stored in binary form in rated value memory 18. In similar manner, individual limit values for the ignition timing for at least some of said portions of the operating range of the engine are permanently stored in binary form in limit value memory 19. The different portions of the operating range of the engine may be formed through a matrix-like division of the total operating range into a plurality of separate matrix portions, each of which represents a given interval of the above adjustment circuit and stored in unit terval of values for the engine speed.
From unit 15, address decoder 17 is supplied with information about the instantaneous manifold pressure and engine speed. Guided by this information, address decoder 17 determines what portion of the operation range the engine operates within and addresses the two memories 18 and 19 in dependence hereupon. The ignition timing limit value for the operating range portion in question, stored in limit value memory 19, is then made available at a first input of comparator and selection unit 22, while the rated value of the ignition timing for said operating range portion stored in rated value memory 18 is supplied to an input of adder 20 which simultaneously, at another input thereof, receives a positive or negative adjustable correction value from correction value unit 21. Adder 20 generates a value constituting the sum of the rated value in question and the correction value.This sum value is made available at another input of comparator and selection unit 22.
The purpose of correction value unit 21 is to permit a rapid and simple correction of all rated values stored in memory 18 when so desired, for instance when shifting from one kind of fuel to another kind of fuel.
Comparator and selection unit 22 serves to compare the supplied corrected rated value with the supplied limit value and to make a selection between these two values. If the corrected rated value differs from the limit value in an impermissible manner, the limit value is selected. If, instead, the corrected rated value differs from the limit value in a permitted manner, said rated value is selected. When the two values are equal, any selection between them need not take place. By means of suitable circuits contained in unit 22, the selected ignition timing value is temporarily stored in said unit until a changed ignition timing is required due to a change in the manifold pressure and/or in the engine speed, involving a shift from one portion of the operating range of the engine to another portion of said range.
The ignition timing value determined by means of values for the manifold pressure and a given in22 is utilized to control the generation of high tension pulses in drive circuit 24 through the intermediary of a synchronizing circuit, generally designated 23. In Figure 1, said synchronizing circuit 23 has been illustrated as consisting of three different units, comprising a control unit 25, a down counter 26, and an arithmetic unit 27. The ignition timing value which has been selected in unit 22 and which may define the desired ignition timing in terms of an angle, corresponding to a certain angular position of the camshaft of the engine, is supplied to arithmetic unit 27 which calculates the difference between a constant higher angle value and the angle value corresponding to the desired ignition timing. The difference value thus formed in unit 27 is fed into down counter 26.
From unit 15, control unit 25 is supplied with synchronizing pulses derived from camshaft transducer 13. Hereby, each time the camshaft reaches an angular position corresponding to said constant higher angle value stored in unit 27, control unit 25 is caused to generate a series of pulses having a time spacing corresponding to the time for each rotation of the camshaft through an angle of 10 at the existing speed of the engine. From unit 25, said pulses are fed to down counter 26 which delivers a trigger pulse to drive circuit 24 when it has counted down to zero. Drive circuit 24 then delivers a high tension ignition pulse to one spark plug 14.
The arrangement above described and shown in
Figure 1 controls the ignition timing in response to constant rated values and constant limit values permanently stored in memories 18 and 19, respectively. Figure 2 shows an alternative embodiment where the ignition timing is controlled in response to variable instead of constant limit values. Since the major part of the arrangement of
Figure 2 is equal to the arrangement of Figure 1, the following description of the arrangement according to Figure 2 will be restricted to describe only the differences between said arrangement and the embodiment according to Figure 1.
In addition to the various units shown in Figure 1, the arrangement of Figure 2 also comprises a limit value adjustment unit 28 and an additional transducer 29 at engine 10. Said transducer 29 may for instance consist of a knock transducer generating an output signal indicating any occurrence of knocking in the engine. Unit 28 is connected to comparison and selection unit 22 to receive information from said unit about the ignition timing value selected and stored therein. Furthermore, unit 28 is also connected to unit 15 in order to be able to receive a control signal derived from transducer 29 when any knocking occurs in the engine.
When such a control signal is received by unit 15, unit 28 will feed a new limit value into the portion of limit value memory 19 addressed by decoder 17.
Said new limit value may preferably be the sum of the value received from unit 22 and a constant term, for instance a binary 1. Hereby, the limit value stored in memory 19 will be succes sively changed in steps until any knocking does no longer occur in engine 10.
If the arrangement shown in Figures 1 and 2 are utilized to effect successive adjustments of the fuel supply to engine 10 instead of the ignition timing, reference numeral 14 will represent four fuel injectors instead of four spark plugs.
Said fuel injectors 14 will be controlled from drive circuit 24 which will deliver suitable electric driving pulses to them.
Reference numeral 16 will designate a fuel supply adjustment circuit successively adjusting the fuel supply in dependence upon the existing manifold pressure and engine speed.
The values stored in memories 18 and 19 will consist of rated values and limit values for the fuel supply.
The value selected in unit 22 may be the desired moment for initiating an injection of fuel into an engine cylinder expressed in terms of an angle corresponding to a certain angular position of the camshaft. Upon the initiation of an injection of fuel into a cylinder, said injec tion may be stopped at a following moment corresponding to a constant angular position for the camshaft.
Alternatively, the fuel injection may be initiated at a constant angular position of the camshaft, while it is instead stopped under the influence of adjustment circuit 16.
The additional transducer 29, shown in Figure 2, may serve to indicate any occurrence of impermissible CO content levels in the exhaust gas. Hereby, the arrangement may be used to control the fuel injection so as to maintain an acceptable CO-content in the exhaust gas.
The invention is not restricted to the embodiments above described and illustrated in the drawings. Instead, many alternative embodiments are feasible within the scope of the invention. Especially, it should be noted that, if desired, the arrangement may easily be modified so as to provide an individual control for each cylinder of the engine.
Claims (13)
1. A method for controlling the combustion process in an internal combustion engine, said method comprising effecting successive adjustments of at least one variable quantity, having influence on the combustion process, in dependence upon the instantaneous values of two different operating parameters of the engine guided by individual rated values for said quantity for a plurality of different portions of the operating range of the engine, defined by predetermined intervals for the values of said two operating parameters, characterized by limiting the adjustment of said quantity within each one of at least some of said portions of the operating range of the engine in dependence upon at least one individual limit value for said quantity within the operating range ::portion in question, said limit value being selected so as to prevent the engine from assuming an undesirable operating condition.
2. A method according to claim 1, characterized by limiting the adjustment of said quantity in de dependence upon at least one predetermined fixed individual limit value for each concerned portion of the operating range of the engine.
3. A method according to claim 1 or 2, characterized by limiting the adjustment of said quantity in dependence upon at least one variable individual limit value for each concerned portion of the operating range of the engine.
4. A method according to claim 3, characterized by detecting any occurrence of at least one selected kind of undesirable operating condition of the engine and utilizing any detection of such an occurrence for determining a variable limit value for the operating range portion in question.
5. A method according to claim 4, characterized by detecting any occurrence of knocking in the engine and utilizing any detection of such an occurrence for determining a variable limit value.
6. A method according to claim 4 or 5, characterized by detecting any occurrence of undesirable thermal conditions in the engine and utilizing any detection of such an occurrence for determining a variable limit value.
7. A method according to any of claims 4 to 6, characterized by detecting any occurrence of undesirable conditions in the exhaust gas from the engine and utilizing any detection of such an occurrence for determining a variable limit value.
8. An arrangement for controlling the combustion process in an internal combustion engine, said arrangement comprising adjustment means for effecting successive adjustments of at least one vari able quantity, having influence on the combustion process, in dependence upon the instantaneous values of two different operating parameters of the engine guided by individual rated values for said quantity for a plurality of different portions of the operating range of the engine, defined by predetermined intervals for the values of said two operating parameters, characterized in that said adjustment means are arranged to limit the adjustment of said quantity within each one of at least some of said portions of the operating range of the engine in dependence upon at least one individual limit value for said quantity within the operating range portion in question, said limit value being selected so as to prevent the engine from assuming an undesirable operating condition.
9. An arrangement according to claim 8, characterized in that said adjustment means are arranged to limit the adjustment of said quantity in dependence upon at least one predetermined fixed individual limit value for each concerned portion of the operating range of the engine.
10. An arrangement according to claim 8 or 9, charac terized in that said adjustment means are arranged to limit the adjustment of said quantity in dependence upon at least one variable individual limit value for each concerned portion of the operating range of the engine.
11. An arrangement according to claim 10, characterized in that it comprises detection means adapted to detect any occurrence of at least one selected kind of undesirable operating condition of the engine, and means adapted to become actuated by said detection means to determine and store variable individual limit values for said quantity for different portions of the operating range of the engine.
12. A method for controlling the combustion process in an internal combustion engine, substantially as herein described.
13. An arrangement for controlling the combustion process in an internal combustion engine, substantially as herein particularly described with reference to Figure 1 or Figure 2 of the accompanying drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8303937A SE8303937D0 (en) | 1983-07-11 | 1983-07-11 | SETTING AND DEVICE FOR ADJUSTING THE IGNITION OF AN ELECTRIC SPARK IGNITION WORKING COMBUSTION ENGINE |
| SE8402667A SE8402667D0 (en) | 1984-05-17 | 1984-05-17 | SET AND DEVICE FOR REGULATING A COMBUSTION-POWERED POVERTY SIZE OF A COMBUSTION ENGINE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8417062D0 GB8417062D0 (en) | 1984-08-08 |
| GB2146456A true GB2146456A (en) | 1985-04-17 |
Family
ID=26658519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08417062A Withdrawn GB2146456A (en) | 1983-07-11 | 1984-07-04 | Method and arrangement for controlling the combustion process in an internal combustion engine |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE3425187A1 (en) |
| FR (1) | FR2549154A1 (en) |
| GB (1) | GB2146456A (en) |
| IT (1) | IT1206460B (en) |
| SE (1) | SE8403602L (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2215841A (en) * | 1988-02-08 | 1989-09-27 | Nissan Motor | System and method for detecting knocking in i.c.engines |
| GB2268600A (en) * | 1992-07-10 | 1994-01-12 | Bosch Gmbh Robert | Controlled driving of an electromagnetic load |
| ES2274733A1 (en) * | 2005-11-14 | 2007-05-16 | Boxitech, S.L. | Reprogrammable switchboard system for starting internal combustion engine, has switchboard that operates with stored advance ignition map, and that communicates with programming station to allow programming of switchboard |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1262249A (en) * | 1969-09-04 | 1972-02-02 | Bosch Gmbh Robert | Improvements in fuel injection systems |
| GB1556419A (en) * | 1975-07-08 | 1979-11-21 | Bosch Gmbh Robert | Fuel injection systems |
| GB1570617A (en) * | 1975-11-18 | 1980-07-02 | Bosch Gmbh Robert | Fuel injection systems for internal combustion engines |
| GB1601978A (en) * | 1977-08-06 | 1981-11-04 | Bosch Gmbh Robert | Method fo and an apparatus for determining an injection period of an internal combustion engine |
| GB1602230A (en) * | 1977-05-31 | 1981-11-11 | Nippon Denso Co | Electronic fuel injection control method |
| EP0042163A2 (en) * | 1980-06-14 | 1981-12-23 | Robert Bosch Gmbh | Method of controlling fuel supply and ignition timing in combustion engines |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3910243A (en) * | 1973-01-09 | 1975-10-07 | Chrysler Corp | Electronic spark timing advance and emission control system |
| JPS5372931A (en) * | 1976-12-10 | 1978-06-28 | Nippon Soken Inc | Internal combustion engine electronic controller |
| JPS5439732A (en) * | 1977-09-05 | 1979-03-27 | Toyota Motor Corp | Ignition timing control for internal combustion engine |
| JPS6024310B2 (en) * | 1977-12-16 | 1985-06-12 | 株式会社デンソー | Ignition timing control device for internal combustion engines |
| US4375668A (en) * | 1978-05-08 | 1983-03-01 | The Bendix Corporation | Timing optimization control |
| JPS54158527A (en) * | 1978-06-02 | 1979-12-14 | Hitachi Ltd | Electronic type fuel control device for internal combustion engine |
| EP0007984B1 (en) * | 1978-08-09 | 1981-11-11 | Robert Bosch Gmbh | Ignition and fuel injection control system for internal combustion engines |
| DE3100825A1 (en) * | 1981-01-14 | 1982-08-12 | Robert Bosch Gmbh, 7000 Stuttgart | DEVICE FOR CONTROLLING THE IGNITION AND / OR FUEL INJECTION AND / OR GEAR SHIFTING PROCESSES IN INTERNAL COMBUSTION ENGINES |
-
1984
- 1984-07-04 GB GB08417062A patent/GB2146456A/en not_active Withdrawn
- 1984-07-06 IT IT8421782A patent/IT1206460B/en active
- 1984-07-06 SE SE8403602A patent/SE8403602L/en not_active Application Discontinuation
- 1984-07-09 DE DE19843425187 patent/DE3425187A1/en not_active Withdrawn
- 1984-07-11 FR FR8411029A patent/FR2549154A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1262249A (en) * | 1969-09-04 | 1972-02-02 | Bosch Gmbh Robert | Improvements in fuel injection systems |
| GB1556419A (en) * | 1975-07-08 | 1979-11-21 | Bosch Gmbh Robert | Fuel injection systems |
| GB1570617A (en) * | 1975-11-18 | 1980-07-02 | Bosch Gmbh Robert | Fuel injection systems for internal combustion engines |
| GB1602230A (en) * | 1977-05-31 | 1981-11-11 | Nippon Denso Co | Electronic fuel injection control method |
| GB1601978A (en) * | 1977-08-06 | 1981-11-04 | Bosch Gmbh Robert | Method fo and an apparatus for determining an injection period of an internal combustion engine |
| EP0042163A2 (en) * | 1980-06-14 | 1981-12-23 | Robert Bosch Gmbh | Method of controlling fuel supply and ignition timing in combustion engines |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2215841A (en) * | 1988-02-08 | 1989-09-27 | Nissan Motor | System and method for detecting knocking in i.c.engines |
| GB2215841B (en) * | 1988-02-08 | 1992-07-08 | Nissan Motor | System and method for detecting knocking for internal combustion engine |
| GB2268600A (en) * | 1992-07-10 | 1994-01-12 | Bosch Gmbh Robert | Controlled driving of an electromagnetic load |
| GB2268600B (en) * | 1992-07-10 | 1995-11-08 | Bosch Gmbh Robert | Controlled driving of an electromagnetic load |
| ES2274733A1 (en) * | 2005-11-14 | 2007-05-16 | Boxitech, S.L. | Reprogrammable switchboard system for starting internal combustion engine, has switchboard that operates with stored advance ignition map, and that communicates with programming station to allow programming of switchboard |
Also Published As
| Publication number | Publication date |
|---|---|
| IT8421782A0 (en) | 1984-07-06 |
| FR2549154A1 (en) | 1985-01-18 |
| GB8417062D0 (en) | 1984-08-08 |
| IT1206460B (en) | 1989-04-27 |
| SE8403602D0 (en) | 1984-07-06 |
| SE8403602L (en) | 1985-01-12 |
| DE3425187A1 (en) | 1985-01-31 |
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