EP0188404A2 - Dispositif de commande et de régulation de la course de réglage d'un levier de commande de moteur à combustion à injection de carburant - Google Patents
Dispositif de commande et de régulation de la course de réglage d'un levier de commande de moteur à combustion à injection de carburant Download PDFInfo
- Publication number
- EP0188404A2 EP0188404A2 EP86890007A EP86890007A EP0188404A2 EP 0188404 A2 EP0188404 A2 EP 0188404A2 EP 86890007 A EP86890007 A EP 86890007A EP 86890007 A EP86890007 A EP 86890007A EP 0188404 A2 EP0188404 A2 EP 0188404A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- microcomputer
- actuator
- indicating
- control
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 7
- 239000007924 injection Substances 0.000 title claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 4
- 230000001276 controlling effect Effects 0.000 title claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 4
- 239000000446 fuel Substances 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 abstract 1
- 230000004913 activation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000003828 downregulation Effects 0.000 description 1
- 230000009474 immediate action Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
Definitions
- the invention relates to an arrangement for controlling and regulating the adjustment path of the control rod of an injection internal combustion engine as a function of operating variables, such as e.g. Speed, boost pressure, accelerator pedal position, etc., which are determined with the aid of transducers, the signal lines of the transducers being connected to the inputs of a microcomputer and an actuator acting on the control rod, in particular a stepper motor, being connected to the output of the microcomputer via a control circuit and with a power supply part for the microcomputer, the control circuit and the like.
- operating variables such as e.g. Speed, boost pressure, accelerator pedal position, etc.
- Motor vehicles with diesel engines do not have an ignition key in the conventional sense, but they do have a main switch, which can be used to switch other consumers on and off in addition to the electronic controller for injection. After switching off with the main switch, the controller should switch the control rod via an actuator, e.g. a stepper motor in the zero position so that the motor is switched off in this way.
- an actuator e.g. a stepper motor in the zero position so that the motor is switched off in this way.
- the electronic controller is in the main circuit, but this has the consequence that after switching off by means of the main switch, the actuator is de-energized, whereby the control rod is somewhere in an undefined position remains. It was therefore necessary to provide a relay with a drop-out delay which, after being switched off with the main switch, supplies the controller with power for a while, so that there is enough time for the control rod to return to the zero position (approx. 1 sec.). With this arrangement, the cost of the additional relay is just as disadvantageous as the fact that this relay creates a possible source of error at a crucial point in the vehicle.
- the microcomputer in the presence of a signal indicating the switch-off of the engine main switch, is set up to emit a reset signal to the actuator control circuit, that the actuator is assigned a feedback device and its signal line with one Input of the microcomputer is connected, which is set up to emit an output signal indicating the zero position of the actuator and that the power supply part is constantly connected to the battery voltage and its output voltage or output voltages can be switched on or off depending on the voltages at two control inputs or are, wherein the output voltage or output voltages can be switched on at the first control input when a signal indicating the switch-on position of the engine main switch is present and when the signal a indicating the zero position of the actuator is present n can be switched off at the second control input.
- the invention it is no longer necessary to have two To take into account times, namely the time that the control rod needs to come to its zero position and the drop-out delay time of the relay previously used. For example, if the relay delay was too small for some reason, for example due to the aging of a capacitor, the control rod got stuck in an undefined position. In contrast, the invention always ensures that the power supply for the controller part is only switched off when the actuator has actually reached the zero position.
- a modification of the invention provides for an arrangement with a hydraulically, pneumatically or electrically actuated emergency stop device for zero throttling of the engine, in particular for interrupting the fuel supply, that the emergency stop device in the presence of a signal indicating the switch-off position of the main engine switch or an emergency signal which can be emitted by the microcomputer can be activated and the microcomputer connected to the signal line of a speed sensor in the presence of a signal indicating the zero speed of the motor is set up to deliver the reset signal to the actuator control circuit.
- a motor e.g. a diesel engine
- a control rod 2 which serves to control the injection pump or the pump nozzles of the engine.
- the control rod 2 can be operated by means of an electromechanical actuator 3, e.g. a stepper motor, operated and varied by the amount of fuel injected between zero and a certain maximum amount (full throttle).
- an emergency shutdown device 4 which also acts on the control rod 2.
- This emergency stop device can work hydraulically, pneumatically or electromechanically; it immediately puts the control rod 2 in its zero position after its activation, regardless of the respective position of the actuator, whereby the fuel supply to the engine 1 is completely interrupted.
- the emergency shutdown device is in the rest position as long as there is voltage on its control line and it is activated as soon as this voltage goes to zero. Activation at zero input voltage takes place for safety reasons, since the emergency shutdown device includes must take immediate action in the event of a power failure.
- the emergency stop device does not necessarily have to act on the control rod. Rather, it is also known that the emergency shutdown device switches a two-way valve when activated, so that the fuel is no longer delivered by the fuel pump to the injection pump or to the pump nozzles, but rather by is suctioned off there, which of course also leads to the motor coming to a standstill.
- An electronic controller 5 is provided for regulation, which essentially has a power supply part 6, a microcomputer 7 and an actuator control 8.
- the arrangement is powered via the motor vehicle battery 11 with the battery voltage U B , the power supply part 6 being constantly connected to the battery voltage via a line 12.
- the battery 11 is connected via a motor main switch 13 to a main line 14 to which various consumers (not shown) can be connected.
- a signal line d leads from the main line 14 to an input x of the power supply part 6 and a signal line a leads to an input of the microcomputer 7.
- the power supply part 6 has one or more output lines 15, via the individual circuit parts of the controller 5, for example the microcomputer 7 and the actuator control 8, can be supplied with stabilized supply voltages.
- the output voltage of the power supply unit can be input or output depending on the voltages at two control inputs x, y. turned off.
- An output line c of the microcomputer leads to a second input y of the power supply part 6, a further output line leads to an input of one of the emergency shutdown devices or its control line e upstream AND gate 16, the second input of which is connected to the main line 14 via a signal line g, and an output leads via a signal line b to the input of the actuator control 8, which is connected to the actuator 3 via a line h is.
- the microcomputer 7 processes the signals and measured values supplied to it and accordingly acts on the actuator 3 via the actuator control 8, as a result of which the control rod 2 is adjusted.
- the position of the actuator 3, e.g. the respective angular position of the axis of a stepper motor is reported to the microcomputer via the feedback 9.
- the microcomputer 7 receives a zero signal via the signal line a, whereupon it outputs a reset signal to the actuator control via the signal line b, so that the control rod 2 is subsequently brought into its zero position by means of the actuator 3.
- the zero position of the actuator 2 is reported via the signal line r to the microcomputer 7, which then outputs a switch-off signal to the second input y of the power supply part 6 via the signal line c, so that the latter switches off the voltages on its output line 15. This also interrupts the power supply to the microcomputer 7.
- this arrangement ensures that the power supply to the controller 5 is only then is interrupted until the control rod is actually in its zero position. If the main motor switch 13 is switched on again, a switch-on signal reaches the control input x of the power supply part 6 via the signal line d, which now begins to work and supplies the controller 5, and thus also the microcomputer 7, with voltage. As requested, control rod 2 is in its zero position when switched on.
- an emergency shutdown device 4 Since diesel engines run up to the permissible maximum speed when certain critical operating conditions exist - until the engine is destroyed - care must be taken to ensure that the engine is throttled immediately in an emergency.
- an emergency shutdown device 4 is provided, the principle operation of which has already been explained above. As long as there is voltage on the control line e of the emergency shutdown device 4, it remains in the idle position; when the voltage is lost, on the other hand, it is activated and, in the exemplary embodiment via the control rod 2, switches off the engine 1.
- the engine 1 can in principle be shut down via the emergency shutdown, which is explained below and to which the invention relates.
- control rod 2 is actuated via the actuator 3, which is controlled by the microcomputer 7 via the control 8.
- a zero signal reaches the AND gate 16 via the signal line g, so that it is also at the control line e the zero signal occurs and the emergency stop device 4 is activated.
- the actuator 3 or the emergency stop device 4 are mechanically coupled to the control rod 2 so that the emergency stop, ie the return of the control rod 2 to its zero position, can take place independently of the respective position of the actuator 3.
- the standstill of the motor 1 is reported via the speed sensor 10 and the signal line n to the microcomputer 7 (zero speed).
- the microcomputer 7 is set up to emit a reset signal to the actuator control 8 via the signal line b even when this signal is present.
- the actuator 3 is then also reset to its zero position, which is then reported to the microcomputer 7 by means of the feedback 9, whereupon — as already described above — the power supply part 6 is switched off and the controller 5 is de-energized.
- the microcomputer 7 is set up in the presence of certain operating states, e.g. could lead to a runaway of the engine, an emergency signal (zero signal) via the signal line f to the AND gate 16. If this occurs, the emergency shutdown takes place in the same way as described above in connection with the switch 13 being switched off.
- the invention can be used not only in connection with motor vehicle engines, but very generally in motors, be it stationary motors or motors in land, air and water vehicles.
Landscapes
- 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)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- High-Pressure Fuel Injection Pump Control (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT86890007T ATE36582T1 (de) | 1985-01-18 | 1986-01-13 | Anordnung zum steuern und regeln des verstellweges der regelstange einer einspritzbrennkraftmaschine. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853501588 DE3501588A1 (de) | 1985-01-18 | 1985-01-18 | Anordnung zum steuern und regeln des verstellweges der regelstange einer einspritzbrennkraftmaschine |
| DE3501588 | 1985-01-18 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0188404A2 true EP0188404A2 (fr) | 1986-07-23 |
| EP0188404A3 EP0188404A3 (en) | 1987-04-15 |
| EP0188404B1 EP0188404B1 (fr) | 1988-08-17 |
Family
ID=6260164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP86890007A Expired EP0188404B1 (fr) | 1985-01-18 | 1986-01-13 | Dispositif de commande et de régulation de la course de réglage d'un levier de commande de moteur à combustion à injection de carburant |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0188404B1 (fr) |
| AT (1) | ATE36582T1 (fr) |
| DE (2) | DE3501588A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0326694A1 (fr) * | 1988-01-30 | 1989-08-09 | Robert Bosch Gmbh | Système de sécurité pour moteur à combustion interne |
| EP0405528B1 (fr) * | 1989-06-29 | 1992-08-12 | Fuji Jukogyo Kabushiki Kaisha | Dispositif d'arrêt pour moteur à combustion interne |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3928800A1 (de) * | 1989-08-31 | 1991-03-07 | Kloeckner Humboldt Deutz Ag | Brennkraftmaschine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4385602A (en) * | 1980-07-25 | 1983-05-31 | Toyota Jidosha Kogyo Kabushiki Kaisha | Rotational speed control device during idling of engine |
| US4391244A (en) * | 1981-06-22 | 1983-07-05 | Toyota Jidosha Kogyo Kabushiki Kaisha | Device of controlling the idling speed of an engine |
| EP0101850A2 (fr) * | 1982-07-23 | 1984-03-07 | Robert Bosch Gmbh | Dispositif de secours pour la marche au ralenti de camions |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4136657A (en) * | 1976-10-21 | 1979-01-30 | Nippondenso Co., Ltd. | Electric control system for diesel engine |
| JPS5535130A (en) * | 1978-09-04 | 1980-03-12 | Hitachi Ltd | Injection amount control system for fuel injection pump in diesel engine |
| DE3007662A1 (de) * | 1980-02-29 | 1981-09-10 | Daimler-Benz Ag, 7000 Stuttgart | Elektronische regelung |
-
1985
- 1985-01-18 DE DE19853501588 patent/DE3501588A1/de not_active Ceased
-
1986
- 1986-01-13 DE DE8686890007T patent/DE3660563D1/de not_active Expired
- 1986-01-13 AT AT86890007T patent/ATE36582T1/de not_active IP Right Cessation
- 1986-01-13 EP EP86890007A patent/EP0188404B1/fr not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4385602A (en) * | 1980-07-25 | 1983-05-31 | Toyota Jidosha Kogyo Kabushiki Kaisha | Rotational speed control device during idling of engine |
| US4391244A (en) * | 1981-06-22 | 1983-07-05 | Toyota Jidosha Kogyo Kabushiki Kaisha | Device of controlling the idling speed of an engine |
| EP0101850A2 (fr) * | 1982-07-23 | 1984-03-07 | Robert Bosch Gmbh | Dispositif de secours pour la marche au ralenti de camions |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0326694A1 (fr) * | 1988-01-30 | 1989-08-09 | Robert Bosch Gmbh | Système de sécurité pour moteur à combustion interne |
| EP0405528B1 (fr) * | 1989-06-29 | 1992-08-12 | Fuji Jukogyo Kabushiki Kaisha | Dispositif d'arrêt pour moteur à combustion interne |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE36582T1 (de) | 1988-09-15 |
| DE3501588A1 (de) | 1986-07-24 |
| EP0188404B1 (fr) | 1988-08-17 |
| EP0188404A3 (en) | 1987-04-15 |
| DE3660563D1 (en) | 1988-09-22 |
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