CN1109138A - Method and apparatus for controlling internal combustion engine - Google Patents
Method and apparatus for controlling internal combustion engine Download PDFInfo
- Publication number
- CN1109138A CN1109138A CN94118956.2A CN94118956A CN1109138A CN 1109138 A CN1109138 A CN 1109138A CN 94118956 A CN94118956 A CN 94118956A CN 1109138 A CN1109138 A CN 1109138A
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- China
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- switch
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- combustion engine
- controlling method
- position signal
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 28
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 230000001276 controlling effect Effects 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 4
- 244000145845 chattering Species 0.000 abstract 1
- 230000000875 corresponding effect Effects 0.000 description 11
- 230000006870 function Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000012432 intermediate storage Methods 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- 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
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
- F02D11/106—Detection of demand or actuation
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
To prevent the occurrence of a fluctuation in a switch signal through reduction of the occurrence of chattering by a internal combustion engine control method wherein corresponding switch information having hysteresis characteristics corresponding to relate seitch signal, in relation to at least one change-over signal.
Description
The present invention relates to a kind of assigned position place and change at least one switch switching signal of switching state and represent that at least one position signal of movable member position infeeds in the control unit movable member, thus the internal combustion engine control method and the device thereof of formation and the corresponding handover information of above-mentioned switching signal.
The switch that connects on the movable member of for example accelerator pedal or output adjustment component (air throttle, jet pump) etc. is used for carrying out internal-combustion engine control.This switch makes its switching state become closed state or become open state from closed state from open state according to the situation of at least one regulation, the assigned position or the position range of for example adjustment component.Exist control function (the dense control when control, full load are opened circuit in the fuel supply in for example idle speed control, the engine braking state etc.) to select or the activate problem according to this switching state to internal-combustion engine.Therefore, for example adjustment component is sentenced when joining with block at a high speed at switching point or block switch, and continuous successively opening and closed state switching state " beating " phenomenon down in other words will be to the control function generation ill effects of internal-combustion engine.
Even the purpose of this invention is to provide a kind of former thereby also can make when making the switching signal frequent variations control of internal-combustion engine continue to have the means of good function because of instability etc.
The problems referred to above of the present invention are to solve like this.Handover information has and the corresponding hysteresis characteristic of above-mentioned switching signal, and this hysteresis forms according at least one position signal.
Method of the present invention is suitable for and the idling for internal combustion engine control associated that adopts regulating device (movable member) as No. 378627 (No. 503195, U. S. Patent) of European patent put down in writing.This regulating device is that the output adjustment component that has Idle Switch is used.At this moment adjustment component links to each other with accelerator pedal by mechanical connection, is operated by the driver.At this moment regulating device has a switch at least, and this switch changes its switching state when adjustment component and regulating device join.When joining, be to be prerequisite with " driver's release the gas pedal ", " hope of idling ", " activate of idle speed control function " to the evaluation of switching signal with adjustment component.By the control to idling, the position of adjustment component or regulating device is controlled so as to the akin form of rotating speed of target of actual speed and regulation in closed loop positioning control scope.At this moment, position transducer detects the position of adjustment component.Like this, tread in a little a bit at for example accelerator pedal, perhaps adjustment component will produce above-mentioned improper part when regulating device is return rapidly.
The method according to this invention is improved the control of internal-combustion engine, and its reason is stabilized from the switching signal of switch derivation.Suppress the undesirable conversion of switching signal thus, obviously reduced switching frequency during with the fast speeds Closing Switch.
Generally speaking, thus reduced the reverse rebound of switch or the instability that switching signal has been avoided in vibration effectively by method of the present invention.
The relevant characteristics of other preferred embodiment of the present invention are put down in writing in the dependent claims.
Below in conjunction with accompanying drawing embodiments of the invention are described.
Fig. 1 is the skeleton diagram of the control system for internal combustion engine of the embodiment of the invention;
Fig. 2 is the more detailed block diagram of the embodiment of the invention;
Fig. 3 is the flow chart of the inventive method;
The signal process figure of the effect of Fig. 4 a～c explanation the inventive method.
Number in the figure 10 is a control unit, and 12,14 is incoming line, and 16,18 is testing apparatus, 20 is outlet line, and 22 is regulating device, and 24 is motor, 26 is movable limit block, and 28 is adjustment component, and 32 is accelerator pedal, 36 is position transducer, and 40 is second place sensor, and 50 is Idle Switch, 102 is trigger, and 106,112 is memory cell, and 115 are the sampling holding member, 122 is memory cell, and 126 is comparing element.
With reference to the accompanying drawings embodiments of the invention are elaborated.
The schematic block diagram of the control system of the internal-combustion engine that Fig. 1 is, this system has the regulating device that is used to connect adjustment component when accelerator pedal unclamps.Represent control unit with reference character 10 in this case.This control unit 10 links to each other with testing apparatus 16～18 by incoming line 12～14.By outlet line 20 control unit 10 is linked to each other with regulating device 22.This regulating device 22 is to be made of motor 24 and movable limit block 26 in preferred embodiment.Also be provided with adjustment component 28.This adjustment component 28 is the air throttle that is provided with in the not shown the sort of internal-combustion engine suction system in preferred embodiment.This adjustment component 28 is connected the accelerator pedal preferably by driver-operated control member 32(by mechanical link body 30) on.By union body 34 above-mentioned adjustment component 28 is connected on the primary importance sensor 36 again.This primary importance sensor 36 is potentiometer in preferred embodiment, and its outlet line 38 then is connected in the control unit 10.In preferred embodiment, the location status of regulating device 22 as shown in phantom in FIG., obtain by being connected the second place sensor 40 on the movable limit block 26.The outlet line 42 of this second place sensor 40 also is connected in the control unit 10.Also be provided with outlet line 44.This outlet line 44 is connected on the adjustment component 46, so that to other performance characteristic of internal-combustion engine, controls as firing rate and/or adjust firing time etc.Also be provided with switch 50 elsewhere.This switch 50 changes switching state when adjustment component 28 touches the movable limit block 26 of regulating device 22, closed smoothly.The outlet line 52 of this switch 50 also is connected on the control unit 10.
The driver is by adjusting with the output of motor with 30 pairs of adjustment component of union body 28 of the mutual mechanical link of accelerator pedal.Position transducer 36 is with the position of adjustment component 28 and then be that measure the position of accelerator pedal 32, by outlet line 38 measured load Up1 is carried to control unit 10.Pass through circuit 12～14 again internal-combustion engine and/or vehicle operation characteristic (for example load condition of engine temperature, engine speed, battery tension, air mass flow, drive etc.) are offered control unit 10.And control unit 10 decides amount of fuel injected and/or adjusts ignition angle according to known engine speed and air mass flow.At this moment, corresponding signal is carried to Fuelinjection nozzle or distributor by circuit 44.
During idling, promptly the driver will speed up pedal when being totally released fully or almost, and adjustment component 28 is just joined with the movable limit block 26 of regulating device 22.This just means that regulating device and adjustment component have produced interaction.Make switch 50 closures in the next meeting of this operating state, corresponding switching signal is infeeded in the control unit 10 by circuit 52, for (for example the idling speed of internal-combustion engine being controlled) controlled in the idling adjustment to adjustment component 28, in control unit 10, provide above-mentioned performance characteristic value.According at this moment engine temperature, load-carrying state etc. form the target adjusted value of engine speed.The actual value of this target adjusted value and engine speed is an associated, and the difference of these two values transforms to desired value (Place object value, air flow target value or voltage-target) corresponding to adjustment component 28 or block 26 according to certain control strategy (mode).For preferred embodiment, the position signal value of this desired value and the adjustment component 28 that provides by circuit 38 relevant (or the position signal value with position transducer 40 is relevant for another preferred embodiment).By the difference that has between target location and the physical location, control unit will form control signal for regulating device 22 according to certain control strategy.This control signal is carried by outlet line 20, and regulating device is adjusted the rotating speed of motor to the state that is similar to rotating speed of target.
At this moment, above-mentioned idle speed control function is owing to the closure of switch 50 becomes effectively.This is just representing that the driver is to the desirable idea of idling.For selectable preferred embodiment, the comparison of the position signal value by position transducer 36 and 40 detects the desirable purpose of idling.Switch 50 is used for checking comparative result and/or tediously long idle signal when being used to break down in this embodiment.
At this moment Idle Switch 50 is represented by the mechanical constraint switch that does not have retardation phenomenon.The switching point of this switch is closed or open in other embodiments when adjustment component touches block., produce the switching repeatedly or the vibration (frequent switching state) of switch 50 by so-called " rebound ", and then on circuit 52, produce switching signal alternately when joining in adjustment component 28 than fast speeds and block 26.For example will speed up that pedal is entered into gently and/or intervention by control is joined adjustment component always with block, switch 50 opens and closes always incessantly.This state can cause control function (for example idle speed control etc.) continual activate and deactivation.Thereby the deterioration of performance characteristic when causing idling causes the variation of engine speed.
In order to improve the performance of system, reduce frequent switching (rebound of switch) can by in the control unit 10 from the switching signal of circuit 52 with carry out suitable evaluation from the signal of circuit 38 and realize.This will describe according to the skeleton diagram of Fig. 2 and the flow diagram of Fig. 3.
At this moment basic scheme is in the switching signal that does not in fact have to lag behind of switch 50, will carry out overlapping with it from the hysteresis that the position signal of position transducer 36 is derived in order to reset idling information.So just, can obviously reduce the switching frequency that produces by idling information.
Fig. 2 has partly expressed the detailed of control unit 10.Switch 50 is connected the set input of trigger 102 by circuit 52.And the output terminal Q of trigger 102 is connected on the memory cell 106 that storage idling information uses by circuit 104.This idling information is estimated by control program.And circuit 52 is connected on the signal edge triggering element 111 by circuit 110.The outlet line 113 of this element 111 is connected on the sampling holding member 115.Element 115 then is connected with on the memory cell 112 by circuit 117.112 of memory cells are connected with position transducer 36 by circuit 38.The outlet line 116 of said elements 115 is connected on the binding site 118.Be connected with memory cell 122 by circuit 120 on this binding site.124 of the outlet lines of binding site 118 are connected with comparing element 126.Also be connected with above-mentioned circuit 38 on this comparing element 126.The outlet line 128 of comparing element 126 is connected the RESET input one side of trigger 102.
During Idle Switch 50 closures, the signal level of past circuit 52 is changed to high level.This level can cause the set of trigger 102.Thereby output terminal Q is to the high level transition, and idling information is adjusted by element 106.When Idle Switch is open once more, produce negative edge, the current potential on the circuit 52 is reduced to low level.Because this negative edge makes the edge trigger element 111 generation effects by circuit 110.This element 111 allows element 115 make corresponding action by corresponding pulse.
In accordance with regulations time point will carry out intermediate storage from the instantaneous position signal value of circuit 38 on memory cell 112, and each time point is rewritten.When said elements 115 activates, just in time storing value is carried from element 115, supplies with fixing maintenance binding site 118.This value is corresponding with the position signal value that the edge generation of bearing detects before.This value and the lagged value of binding site 118 (Gui Ding position signal value for example, (as 1 ° adjustment component displacement value) corresponding value added or magnitude of voltage, it is by being deposited in the memory cell 122) superimposed, again with these two values and infeed in the comparing element 126.Comparing with the intermediate storage position signal value that only improves lagging width from the instantaneous position signal value of circuit 38 when also big, above-mentioned comparing element 126 is carried output signals to circuit 128.At this moment trigger 102 resets.The level of circuit 104 is reduced to low level, and the idling information in the element 106 is cancelled.
That is to say that the idling information of adjustment component was carried out intermediate storage according to the negative edge of switching signal by trigger impulse in element 115 before Idle Switch is open, only bring up to the lagging width of regulation.Resetting of idling information lagged behind with respect to carrying out with the adjustment of the switching signal associated of switch by regulation, and this hysteresis is that the idle position according to adjustment component forms.
In fact, idle position draws when switch is open.During switch on, adjustment component also can be opened (damping function) by the regulating device relevant with idle position.When detecting excessive position signal value, the idling phase place produces the big hysteresis of not allowing at last under closed fully position regulating member.
More advantageously, adopted the open adjustment component position before of switch.Idling information is suitably adjusted like this.
Said method can adopt other switch gear preferably, for example adopts accelerator pedal switch (idling and/or full load switch) or air throttle switch (idling and/or full load switch) in the system that has bypass passageways in order to control idling.Recited above is the prerequisite that exists for at least one continuous position information relevant with the position of movable member (accelerator pedal, air throttle).
At this moment continuous position information is that another kind of signal outside the signal of potentiometer signal or non-contact position sensor is also passable.It promptly can be the signal of the position of the corresponding yardstick amount of air of direct representation and supply engine and adjustment component or operating element.
Another advantageously, in order to adapt to this method on the ambient conditions that himself changes, the width of hysteresis is set according to performance characteristic such as engine temperature, outside air temperature, battery tensions.
Describe method of the present invention in detail according to flow diagram shown in Figure 3 below.Program part shown in Figure 3 is to be begun by the identification to the negative edge of the Idle Switch signal of determining step 200.During testing process subsequent step 202 before, transmit that negative edge exists before occurring and the position signal value DK(N-1 of storage) thereafter.Then in step 204, from storing value DK(N-1)+lagged value △ (getting according to its performance characteristic) forms threshold value DK0.In step 206 read instantaneous position signal DK, in determining step 208, check whether detected instantaneous position signal value DK is bigger than threshold value DK0 thereafter.Than threshold value DK0 hour, program part turned back to step 206 at detected instantaneous position signal value DK.When step 208 identified the position signal value that detected greater than the threshold value of being tried to achieve, idling information resetted in step 212, EOP end of program.
During program part process shown in Figure 3, when carrying out switch new closed, this program is interrupted.This program part is called by new negative edge.
Resetting of idling information only producing the edge of bearing and is being only possible under the situation that surpasses the threshold value DK0 that stores.This resetting is not that reverse rebound because of the beating of switching signal, switch causes.
Express the characteristic signals procedure chart that is used to illustrate method of the present invention among Fig. 4.At this moment on the transverse axis of Fig. 4 a～c various time graphs.Fig. 4 a expresses the switching signal S that position signal DK, Fig. 4 b represent Idle Switch.Corresponding Fig. 4 c then represents the process of idling information LL.
These figure draw according to following situation.
Driver's release the gas pedal.Adjustment component is return with block and is joined.Fig. 4 a expresses the respective process of position signal DK.Time point t0 place Idle Switch closure (referring to Fig. 4 b).Idling information is set at time point t0 place thus.By allowing adjustment component collision rapidly on block, make this adjustment component produce repeatedly reverse back and forth rebound and when time point t1, drop on a position of rest.By set the open regulation threshold value DK0(of each switch this by shown in the dotted line among Fig. 4 a), oppositely rebound and the variation of the switching signal S that constantly takes place can not cause idling change in information among Fig. 4 c back and forth between time point t0 and the t1 among Fig. 4 b.For example then can cause the undesirable switching of Idle Switch from time point t2 by reasons such as the driver push down on the pedal gently.The respective process of position signal value DK and idle signal LL shows at Fig. 4 a and b.By method of the present invention then at time point t2 to the idling change in information not taking place between the t3.This idling change in information just begins to take place when position signal value DK surpasses margin line DK0 shown in the dotted line.By Fig. 4 c this surmount identified at time point t3 place, in this time point idling information that resets.
Except the illustrated arrangement structure with the forward level of opening switch, method of the present invention also can similarly be carried out when being used for the configuration structure of reverse level.
According to the present invention, it has the good function of the internal-combustion engine control that brings because of the switching signal that derives from switch is stabilized.Suppress the undesirable conversion of switching signal thus, the switching frequency when obviously reducing switch on fast speeds.
Claims (9)
1, a kind of controlling method of internal-combustion engine, it changes movable member assigned position place at least one switch switching signal of switching state and represents that at least one position signal of the position of movable member infeeds in the control unit, thereby form and the corresponding handover information of above-mentioned switching signal, it is characterized in that: above-mentioned handover information has and the corresponding hysteresis characteristic of above-mentioned switching signal, and this hysteresis forms according at least one position signal.
2, the controlling method of internal-combustion engine as claimed in claim 1 is characterized in that: when above-mentioned switch is open, will caused position signal value store before this opening.
3, the controlling method of internal-combustion engine as claimed in claim 1 or 2 is characterized in that: the position signal value hysteresis size in accordance with regulations of above-mentioned storage is changed.
4, as the controlling method of the described internal-combustion engine of one of claim 1 to 3, it is characterized in that: the instantaneous position signal value is discerned the open state of above-mentioned switch when surpassing the position signal value of the above-mentioned storage by the change of hysteresis size.
5, as the controlling method of the described internal-combustion engine of one of claim 1 to 4, it is characterized in that: above-mentioned hysteresis characteristic function is according to the opening of switch or closure and activate.
6, as the controlling method of the described internal-combustion engine of one of claim 1 to 5, it is characterized in that: above-mentioned switch is the mechanical switch that does not have hysteresis.
7, as the controlling method of the described internal-combustion engine of one of claim 1 to 6, it is characterized in that: above-mentioned movable member is adjustment component, movable limit block or functional unit, above-mentioned switch is Idle Switch or switch at full capacity, and above-mentioned Idle Switch is to be used to refer to state that the regulating device (idle adjuster) with for example adjustment component (air throttle) joins.
8, as the controlling method of the described internal-combustion engine of one of claim 1 to 7, it is characterized in that: by the idling speed of above-mentioned adjustment component controlling combustion engine.
9, a kind of control gear of internal-combustion engine, it comprises movable member, on the assigned position of above-mentioned movable member, change switching state switch, detect the position transducer of above-mentioned movable member position and rely at least the handover information of deriving from the switch switching signal and position signal and the control unit of controlling combustion engine, it is characterized in that: above-mentioned handover information has and the corresponding hysteresis characteristic of above-mentioned switching signal, and this hysteresis forms according to position signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4339693A DE4339693A1 (en) | 1993-11-22 | 1993-11-22 | Internal combustion engine control method |
| DEP4339693.3 | 1993-11-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1109138A true CN1109138A (en) | 1995-09-27 |
| CN1055522C CN1055522C (en) | 2000-08-16 |
Family
ID=6503100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94118956A Expired - Fee Related CN1055522C (en) | 1993-11-22 | 1994-11-22 | Method and apparatus for controlling internal combustion engine |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH07180594A (en) |
| CN (1) | CN1055522C (en) |
| DE (1) | DE4339693A1 (en) |
| FR (1) | FR2712928B1 (en) |
| IT (1) | IT1275656B1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139955B (en) * | 2006-09-05 | 2011-06-15 | 伍德沃德公司 | Compensating for varying fuel and air properties in an ion signal |
| CN104024613A (en) * | 2011-12-29 | 2014-09-03 | 通用电气公司 | Apparatus and method for controlling an internal combustion engine |
| USD800739S1 (en) | 2016-02-16 | 2017-10-24 | General Electric Company | Display screen with graphical user interface for displaying test details of an engine control test |
| CN107438530A (en) * | 2015-03-31 | 2017-12-05 | 奥迪股份公司 | Method and corresponding power transmitting apparatus for the power transmitting apparatus that runs motor vehicle |
| US10495014B2 (en) | 2011-12-29 | 2019-12-03 | Ge Global Sourcing Llc | Systems and methods for displaying test details of an engine control test |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016219622B4 (en) | 2016-10-10 | 2019-06-13 | Robert Bosch Gmbh | Method for detecting a bouncing movement of a pedal |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3510176A1 (en) * | 1984-08-16 | 1986-02-27 | Robert Bosch Gmbh, 7000 Stuttgart | ELECTRONIC DRIVE PEDAL FOR A MOTOR VEHICLE |
| DE3445983A1 (en) * | 1984-12-17 | 1986-06-19 | Robert Bosch Gmbh, 7000 Stuttgart | METHOD FOR DETECTING AN EXTREME VALUE POSITION OF A MOVING PART |
| JPH0735737B2 (en) * | 1986-06-24 | 1995-04-19 | トヨタ自動車株式会社 | Throttle valve fully closed position detection device |
| DE3824631A1 (en) * | 1988-07-20 | 1990-01-25 | Bosch Gmbh Robert | MALFUNCTION TEST METHOD AND DEVICE FOR IDLE CONTROL |
| US4944269A (en) * | 1989-09-18 | 1990-07-31 | Siemens-Bendix Automotive Electronics L.P. | Accelerating pedal for electronic throttle actuation system |
-
1993
- 1993-11-22 DE DE4339693A patent/DE4339693A1/en not_active Withdrawn
-
1994
- 1994-10-24 FR FR9412681A patent/FR2712928B1/en not_active Expired - Fee Related
- 1994-11-11 IT IT94MI002287A patent/IT1275656B1/en active IP Right Grant
- 1994-11-15 JP JP6280731A patent/JPH07180594A/en active Pending
- 1994-11-22 CN CN94118956A patent/CN1055522C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139955B (en) * | 2006-09-05 | 2011-06-15 | 伍德沃德公司 | Compensating for varying fuel and air properties in an ion signal |
| CN104024613A (en) * | 2011-12-29 | 2014-09-03 | 通用电气公司 | Apparatus and method for controlling an internal combustion engine |
| US10495014B2 (en) | 2011-12-29 | 2019-12-03 | Ge Global Sourcing Llc | Systems and methods for displaying test details of an engine control test |
| CN107438530A (en) * | 2015-03-31 | 2017-12-05 | 奥迪股份公司 | Method and corresponding power transmitting apparatus for the power transmitting apparatus that runs motor vehicle |
| USD800739S1 (en) | 2016-02-16 | 2017-10-24 | General Electric Company | Display screen with graphical user interface for displaying test details of an engine control test |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1055522C (en) | 2000-08-16 |
| ITMI942287A0 (en) | 1994-11-11 |
| FR2712928A1 (en) | 1995-06-02 |
| JPH07180594A (en) | 1995-07-18 |
| DE4339693A1 (en) | 1995-05-24 |
| ITMI942287A1 (en) | 1996-05-11 |
| IT1275656B1 (en) | 1997-10-17 |
| FR2712928B1 (en) | 1999-11-12 |
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