EP0468007A1 - System for controlling and/or regulating an internal combustion engine. - Google Patents
System for controlling and/or regulating an internal combustion engine.Info
- Publication number
- EP0468007A1 EP0468007A1 EP19910902506 EP91902506A EP0468007A1 EP 0468007 A1 EP0468007 A1 EP 0468007A1 EP 19910902506 EP19910902506 EP 19910902506 EP 91902506 A EP91902506 A EP 91902506A EP 0468007 A1 EP0468007 A1 EP 0468007A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- sensors
- combustion engine
- internal combustion
- values
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 24
- 230000001276 controlling effect Effects 0.000 title claims description 9
- 230000001105 regulatory effect Effects 0.000 title claims description 9
- 230000007257 malfunction Effects 0.000 claims abstract description 29
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000001771 impaired effect Effects 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 claims description 4
- 230000000977 initiatory effect Effects 0.000 claims 3
- 230000035945 sensitivity Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- 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
- F02D11/107—Safety-related aspects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0404—Throttle position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/60—Input parameters for engine control said parameters being related to the driver demands or status
- F02D2200/602—Pedal position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
- F02D2400/08—Redundant elements, e.g. two sensors for measuring the same parameter
Definitions
- the invention relates to a system for controlling and / or regulating an internal combustion engine according to the preambles of the independent claims.
- Such a system is known from DE-OS 36 21 937.
- the system described there for controlling and / or regulating an internal combustion engine has at least one measuring device for detecting an operating parameter of the internal combustion engine and / or the motor vehicle, depending on which the internal combustion engine is controlled and / or regulated.
- This operating parameter relates in particular to the position of a power-determining element of an electronic accelerator pedal system, such as a power actuator and / or an operating element that can be actuated by the driver.
- Malfunction detection for the measuring device takes place on the basis of the signal values which it emits and which represent the operating parameters by comparing these signal values with predetermined limit values as a signal range check.
- the invention is therefore based on the object of specifying measures which ensure comprehensive operational reliability and availability of a control and / or regulating system of an internal combustion engine. This is achieved by using a checking method for checking the malfunction of the measuring device that detects the operating parameters, which is designed to be less sensitive within the specified sub-areas than outside of these sub-areas.
- measuring devices can be provided which consist of a plurality of sensors, each of which detects the operating parameter of the internal combustion engine and / or the motor vehicle, in particular the position of a power-determining element assigned to them, and on the basis of those generated by the sensors Signal values, a first malfunction check is carried out to determine whether the signal values lie in a first predetermined value range, and in predetermined partial areas with the problems described above, in the case of potentiometers, in particular in the idle or near-idle range of the position of the respective one Elements, a second malfunction / tio ⁇ ns check whether the signal values individually and / or to each other are in a predetermined second value range.
- a monitoring device for an electronically controlled throttle valve in a motor vehicle is known from DE-OS 35 10 173, a measuring device being connected in particular to the accelerator pedal of an electronic accelerator pedal system, which in one of the exemplary embodiments consists of a position transmitter potentiometer and a monitoring point . tentiometer exists.
- the position signal supplied by the position transmitter potentiometer is compared in a logic unit with threshold values determined from the signal of the monitoring potentiometer, and the function of the measuring device is checked against the threshold values on the basis of the signal size of the position transmitter potentiometer. This procedure also shows the disadvantages mentioned above.
- An advantage of the procedure according to the invention can be seen in the fact that a verification method is used which is characterized in sub-areas which are characterized by impaired, incomplete signal transmission or generation, for example as a result of an increased contact resistance between the resistance track and wiper tap of a potentiometer, is designed to be less sensitive. On the one hand, this enables malfunctions of the sensor that actually occur to be detected, but effectively shuts down the entire system due to the supposed malfunctions set out above.
- the procedure according to the invention ensures extensive operational reliability and availability of a system for controlling and / or regulating an internal combustion engine, since in the case of a measuring device consisting of a plurality of sensors, the first malfunction check determines whether the signal values generated by the sensors correspond to one another in a predetermined manner first value range, detection of shunts with parasitic resistances both to the supply voltage poles and between the signal lines of the sensors and non-linearities of the sensor characteristics and interruptions of the signal lines with parasitic resistances to the supply voltage poles is possible.
- FIG. 1 shows a block diagram of a system equipped with a measuring device consisting of several sensors using the example of an electronic accelerator pedal.
- FIG. 2 shows a preferred embodiment of the measuring device using the example of a double potentiometer, while FIGS. 3 and 4 illustrate the procedure according to the invention using the example of a characteristic diagram and a flow diagram.
- FIG. 1 shows a power actuator 10 of an internal combustion engine, not shown, for example a throttle valve for influencing Solution of the air supply to the internal combustion engine or a control rod for controlling the amount of fuel to be supplied to the internal combustion engine shown.
- 11 denotes an operating element which can be actuated by the driver, for example " an accelerator pedal of an electronic accelerator pedal system.
- the power actuator 10 and / or the operating element 11 are connected via connections 12 and 13 to measuring devices 14 and / or comprising several sensors. 1, for the sake of clarity, only the measuring device 14 assigned to the power actuator 10 is shown in more detail in FIG. 1, so that the following statements relating to the measuring device 14 are applied in an analogous manner to the measuring device 15
- the measuring devices 14 and 15 generate signal quantities corresponding to the number of sensors, which represent the position of the respectively assigned element 10 and 11, respectively.
- the measuring device 14 comprises a plurality of sensors 16 to 18 for detecting the position of the assigned element.
- sensors 16 to 18 are potentiometers.
- the mechanical connection 12 acts on the sensors 16 to 18 in such a way that a change in the position of the assigned element 10 leads to a corresponding change in the output signal quantities of the sensors, so that each sensor represents a signal quantity representing the position of the assigned element generated.
- the mechanical connection 12 is connected to the movable wiper taps of the potentiometers.
- the position signal size is derived from the grinder taps.
- the measuring device 14 is linked to the computing unit 32 via signal lines 24 to 26, which connect the sensors to A / D converters 28 to 30, which are part of a computing unit 32.
- the computing unit 32 comprises a further group of A / D converters 38 which are connected to the measuring device 15 via the signal lines 34. For reasons of clarity, a detailed description of these elements has been omitted. ⁇ Their structure and mode of operation result from the description in connection with the measuring device 14.
- the A / D converters 28 to 30 are connected via a connecting line 40 to a computer 42, to which the line 44 is likewise led, which connects the computer 42 to the A / D converters 38.
- the output line 46 of the computer 42 leads via an output stage 48 to an output line 50 of the computing unit 32, which connects the computing unit 32 to the power actuator 10 of the internal combustion engine.
- the measuring device 14 outputs via its signal lines 24 to 26 one of the positions of the element 10, which is transmitted to the sensors 16 to 18 via the connection 12, to the computing unit 32.
- the signal quantities converted by analog / digital converters 28 to 30 and converted to the computer 42 via the line 40 are processed by means of the A / D converters 28 to 30.
- the signal magnitude of the sensor 16 which represents the power actuator position and thus the actual value of a power control circuit consisting of the internal combustion engine and the computing unit 32, is compared in the computer 42 with the desired value of the control panel input to the computer via the line 44 and in Dependence of the comparison result on the output lines 46, the output stage 48 and the output line 50 influences the power actuator 10 in such a way that the difference between the setpoint and actual value is reduced.
- the signal quantities of the further sensors serve only to monitor the function of the sensor 16.
- an average or a minimum value from the signal quantities generated by the sensors 16 to 18 is used to regulate the position of the power actuator 10, at least one of the signal quantities of one of the sensors being used to monitor the function of the other .
- the computing unit 32 carries out further functions, such as determining the ignition timing, metering the fuel and / or idling control.
- FIG. 2 shows a preferred exemplary embodiment of the measuring devices 14 and / or 15 as a so-called double potentiometer.
- FIG. 2 shows the measuring device 14 or 15 and the computing unit 32, the inputs and outputs of which are assigned as in FIG. 1.
- the measuring device comprises two sensors 100 and 102 designed as potentiometers, the wiper taps 104 and 106 of which are connected to the mechanical connection 12 or 13.
- the two grinder taps 104 and 106 change their position as a function of a change in position of the element acting on the grinder taps via the mechanical connection parallel to one another in the same direction.
- the resistance path 108 of the sensor 100 is connected via a connecting line 110 to the positive pole 112 of the supply voltage, while at the other end of the resistance path 108 of the sensor 100 a second line 114 leads to the negative pole 116 of the supply voltage.
- the Sensor 100 the position of the grinder tap 104 in the vicinity of the positive connection of the supply voltage, as shown in FIG. 2, an idle position of the associated element.
- the wiper tap 104 is connected via the signal line 118 and the resistor 120 to the signal line 24 or, in the case of the measuring device 15, to one of the lines 34 which connect the measuring devices to the computing unit 32.
- the resistance path 122 of the sensor 102 is connected via a connecting line 124 to the positive pole 112 of the supply voltage, while at the other end of the resistance path 122 of the sensor 102 a second line 126 is connected via the connection point 128 and the resistor 130 to the negative pole 116 of the supply voltage is guided.
- the wiper tap 106 of the sensor 102 is connected to a signal line 132 which leads via the connection point 134 and the resistor 136 to the signal line 26 or, in the case of the measuring device 15, to one of the lines 34 which connect the measuring devices to the computing unit 32 connect.
- a further resistor 138 is located between the two connection points 134 and 128. In contrast to the sensor 100, the idle position of the sensor 102 is in the vicinity of the negative connection of the supply voltage.
- the two potentiometers are electrically opposite, i.e. when the position changes, the signal sizes of the two sensors change in the opposite direction.
- the procedure according to the invention is also used in the case of electrically synchronous potentiometers.
- the signal line 24 leads in the arithmetic unit 32 to a node 140 at which there is a resistor 142 against the negative pole 116 of the supply voltage. Furthermore, the signal line 24 is routed via this node 140 on the A / D converter 28 or one of the A / D converters 38. In an analogous manner, the signal line 26 leads via the connection point 144, to which a counter Stand 146 was connected to the negative pole 116 of the supply voltage to the A / D converter 30. According to FIG. 1, the outputs of the two A / D converters 28 and 30 are connected to a connecting line 40 which they connect to the computer 42 connects.
- the voltage divider of the resistors 130 and 138 in conjunction with the resistor 146 representing the input circuitry of the computing unit 32 impresses a predetermined minimum signal value on the signal line 132 and 26, respectively in the case of an interrupted signal line 132 or. 26 or an interrupted ground line 126 does not occur. As shown below, this enables a distinction to be made between an interrupted line and an increased contact resistance.
- the input circuit (resistor 146) of the computing unit 32 belonging to the sensor 102 is designed such that, for example when the signal line is interrupted, a signal quantity is passed to the computing unit which corresponds to an idle position of the assigned element, in particular the value 0.
- FIG. 3 shows the position-signal quantity characteristics of the two sensors 100 and 102 designed according to FIG. 2.
- the essentially linear characteristic 200 falling from right to left represents that of the sensor 100, while the opposite fende represents the characteristic curve 202 of the sensor 102.
- These characteristic curves are a consequence of the different supply voltage connection of the two sensors. 3, upper (204)
- the predetermined minimum limit value (210) (Umin) generated by the switching elements 130 and 138 is shown in the idle or near idle area of the characteristic 202 of the sensor 102 used to monitor the sensor 100.
- a first malfunction check results from a comparison of the signal values with the upper and lower permissible limit values (U__, U_-). This corresponds to
- G2 Gl each sensor individually a signal range check. Furthermore, it can be checked whether the signal values are in a predetermined permissible tolerance band with respect to one another. This tolerance band can be formed in different ways. On the one hand, in the case of electrically counter-rotating sensors, it is possible to add the signal quantities. As a result of the electrical contradiction, this leads to the upper maximum if the sensors function correctly
- G2 margin band is formed by adding or subtracting a value that represents the still tolerable deviation between the sensor signal variables and the sum of the signal variables of the two sensors is checked for compliance with this tolerance band.
- this tolerance band can be formed by adding and subtracting a predetermined tolerance value to the signal values of the sensor 100 which operates the control function.
- the signal value of the monitoring sensor 102 must then lie in this first tolerance band when the measuring device is functioning correctly.
- This measure can also be used in the case of electrically synchronous sensors; in the case of opposite behavior, the signal values must be converted to check for malfunction.
- this first malfunction check whether the signal sizes of the sensors to one another lie outside a first value range, can cause the entire system to be switched off unnecessarily as a result of detected malfunction, because of the high contact resistances that may occur. Therefore, a second type of monitoring is introduced in the idle or near idle area. This consists in that in this sub-area less sensitive monitoring is carried out compared to the tolerance band monitoring described above. For this purpose, the check is limited to whether the signal values of the two sensors relative to one another are below the upper limit of the tolerance band.
- a further gain in safety can be achieved in this sub-area by the circuit measures mentioned above.
- a check of the signal value of the sensor 102 with the predetermined minimum limit value U in enables a distinction to be made between an actual fault condition due to a line break, which must result in a corresponding reaction, or an increased contact resistance.
- the second range of values is therefore limited by Umin.
- An analogous procedure can also be carried out with regard to the sensor 100. In the exemplary embodiment, however, U is retained as the lower limit.
- This second type of monitoring or malfunction check is accordingly less sensitive to the first.
- the procedure described above is to be used in another embodiment with only one sensor, the function of which can be monitored by means of another, second operating parameter.
- the program executed in the computing unit 32 for malfunction detection of the measuring device 14, which can also be applied in an analogous manner to the measuring device 15, is shown as a flow chart in FIG. ⁇
- step 300 the two signal quantities, which represent the position of the respectively assigned element, are read in via lines 24 and 26, and in step 302 the query is made as to whether one of the two signal quantities is one upper permissible limit value (U) exceeds. If this is the case, a malfunction of the measuring device is identified in step 304 G2, the cause of which is e.g. can lie in a short circuit to plus and, if necessary, an intended emergency function is initiated and the program part ends.
- U permissible limit value
- both signal sizes are below their maximum permissible limit value (UG__2)
- UG__2 maximum permissible limit value
- U a predetermined threshold
- a first, and in the other case a second, monitoring function is initiated.
- step 308 it is checked in query step 308 whether one of the two signal variables is below a lower, permissible limit value (U). If this is the case, a malfunction of the measuring device due to a possible interruption in the positive supply voltage line, a short circuit to ground or an interruption of the signal lines is recognized in step 310 and the program is ended. If both signal values are above their lower permissible limit value (U) in accordance with the query in step 308, then in the further steps
- Gl ten checks whether the two signal quantities are in a predetermined signal range with respect to one another.
- the signal value of the sensor 100 operating the control function can also be checked before the query 306, an error reaction occurring after step 304 if the minimum limit value U is undershot.
- the query 308 then only relates to the monitoring sensor 102.
- the sum of the two signal values is examined to determine whether they are above one around the upper maximum
- step 310 a malfunction of the measuring device is recognized and, if necessary, an emergency operation function is initiated. This type of error can result from shunts or non-linearities. In the other case, this sum is checked in query step 314 to determine whether it lies below this tolerance band. If this is the case, the reaction described above takes place after step 310, while in the other case the functionality of the measuring device is determined and, in accordance with step 316, the system is operated in normal operation. The program part is then ended and, if necessary, restarted.
- Steps 312 and 314 can also be carried out in such a way that one of the two signal values is checked to determine whether it lies above or below a tolerance range formed by another signal value.
- step 318 checks whether the signal value of the sensor 100 performing the control function is below the permissible minimum limit value ().
- step 304 the procedure is the same as in step 304, while in the opposite case in the query step 320 the signal value of the monitoring sensor 102 is checked to determine whether the witnessed signal size is below the minimum limit 210 Umin. In the event of such a result, an interruption in the signal line and / or an interruption in the positive supply voltage line of the sensor 102 is concluded and the procedure is carried out in accordance with step 304.
- An opposite result of the query step 320 leads to the query after step 322 whether the setpoint value generated by the control element is below an idle value increased by a tolerance value, ie whether the measuring device is still in the idle or near idle range. If this is not the case, a malfunction check of the measuring device must be carried out according to steps 312 and 314.
- step 324 the query is carried out in step 324, with which it is checked whether the signal value of sensor 102 is below the upper limit of the tolerance band formed around the signal value of sensor 100.
- step 304 if the limit value is exceeded by the signal value, an error reaction occurs, for example, due to a possible short circuit of the sensor 102 to plus, with the opposite result, normal operation of the measuring device can be assumed, in spite of a possibly existing increased contact resistance between the grinder tap and Resistance track.
- This second type of monitoring checks whether the signal values of the sensors individually and / or relative to one another lie outside a second value range. Since this range of values is larger in terms of amount, the second type of monitoring is less sensitive than the first.
- the measure described above avoids an error reaction as a result of impaired, incomplete signal transmission or generation.
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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)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
On propose un système de commande et/ou de régulation d'un moteur à combustion interne dépendant au moins de valeurs de signal qui représentent la position d'un élément au moins influençant la puissance du moteur à combustion interne et qui sont calculés par un dispositif de mesure pour le calcul de cette position, système avec lequel ce dispositif de mesure comporte plusieurs capteurs mesurant chacun la position de ce même élément et avec lequel, sur la base des valeurs de signal produites par les capteurs, on procède à une première détection de défauts de fonctionnement en déterminant si les valeurs de signal, les unes par rapport aux autres, se situent dans une première déterminée et on procède, dans des domaines partiels déterminés, en particulier dans une position de chaque élément correspondant à un fonctionnement à vide ou à un domaine proche du fonctionnement à vide, à un deuxième contrôle des défauts de fonctionnement pour déterminer si les signaux, individuellement et/ou les uns par rapport aux autres, se situent dans une deuxième plage de valeurs déterminée. Le deuxième contrôle des défauts de fonctionnement est moins sensible que le premier.A control and/or regulation system of an internal combustion engine is proposed depending at least on signal values which represent the position of at least one element influencing the power of the internal combustion engine and which are calculated by a device measuring device for calculating this position, system with which this measuring device comprises several sensors each measuring the position of this same element and with which, on the basis of the signal values produced by the sensors, a first detection of operating faults by determining whether the signal values, with respect to each other, are within a determined first and one proceeds, in determined partial domains, in particular in a position of each element corresponding to operation without load or at a domain close to no-load operation, to a second check for operating faults to determine whether the signals, individually and/or the relative to each other, are within a second determined range of values. The second malfunction check is less sensitive than the first.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4004083 | 1990-02-10 | ||
DE4004083A DE4004083A1 (en) | 1990-02-10 | 1990-02-10 | SYSTEM FOR CONTROLLING AND / OR REGULATING AN INTERNAL COMBUSTION ENGINE |
PCT/DE1991/000042 WO1991012423A1 (en) | 1990-02-10 | 1991-01-19 | System for controlling and/or regulating an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0468007A1 true EP0468007A1 (en) | 1992-01-29 |
EP0468007B1 EP0468007B1 (en) | 1995-10-11 |
Family
ID=6399859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91902506A Expired - Lifetime EP0468007B1 (en) | 1990-02-10 | 1991-01-19 | System for controlling and/or regulating an internal combustion engine |
Country Status (6)
Country | Link |
---|---|
US (1) | US5224453A (en) |
EP (1) | EP0468007B1 (en) |
JP (1) | JP2854709B2 (en) |
DE (2) | DE4004083A1 (en) |
ES (1) | ES2079640T3 (en) |
WO (1) | WO1991012423A1 (en) |
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DE4015415B4 (en) * | 1990-05-14 | 2004-04-29 | Robert Bosch Gmbh | Device for detecting a variable operating parameter |
DE4038337C2 (en) * | 1990-12-01 | 1999-12-02 | Bosch Gmbh Robert | Method for controlling and / or regulating an internal combustion engine |
DE4235880C2 (en) * | 1992-10-23 | 2003-07-17 | Bosch Gmbh Robert | Method and device for detecting a variable size in vehicles |
JP2855393B2 (en) * | 1993-02-05 | 1999-02-10 | 本田技研工業株式会社 | Control device for internal combustion engine |
WO1994019592A1 (en) * | 1993-02-26 | 1994-09-01 | Siemens Aktiengesellschaft | Arrangement for connecting position sensors to processors |
DE4313746C2 (en) * | 1993-04-27 | 2002-11-07 | Bosch Gmbh Robert | Method and device for controlling the power of a drive unit of a vehicle |
DE4322472B4 (en) * | 1993-07-06 | 2006-03-09 | Siemens Ag | Circuit arrangement for monitoring a position transmitter |
US5695444A (en) * | 1995-07-20 | 1997-12-09 | Chaney; John L. | Male organ constrictor device and method of using the device |
DE19780251C2 (en) * | 1996-02-29 | 2001-02-22 | Mitsubishi Motors Corp | Fuel supply system for an internal combustion engine |
JP3770675B2 (en) * | 1996-12-19 | 2006-04-26 | トヨタ自動車株式会社 | Throttle control device |
DE19719518B4 (en) * | 1997-05-09 | 2008-04-30 | Robert Bosch Gmbh | Method and device for controlling a drive unit of a motor vehicle |
DE19826589A1 (en) * | 1998-06-15 | 1999-12-23 | Siemens Ag | Method for distinguishing a line break and a line impairment when determining a pedal position in a motor vehicle |
JP3694406B2 (en) * | 1998-08-28 | 2005-09-14 | 株式会社日立製作所 | Fail-safe control device for electric throttle type internal combustion engine |
EP1136681A3 (en) * | 2000-03-24 | 2003-08-06 | Ford Global Technologies, Inc. | Electronic throttle control system |
DE10018859A1 (en) | 2000-04-14 | 2001-10-18 | Bosch Gmbh Robert | System for monitoring a measurement, control and regulating (MCR) device e.g. for combustion engine, includes counter which increases it count-state with the occurrence of a fault function to enable the operating state of the MCR device |
US6434476B1 (en) * | 2000-10-04 | 2002-08-13 | Detroit Diesel Corporation | High voltage fault discrimination for EGR temperature sensor |
DE10064673B4 (en) * | 2000-12-22 | 2005-02-24 | Renk Ag | Fault tolerant electromechanical actuator |
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US6899080B2 (en) | 2002-07-13 | 2005-05-31 | Visteon Global Technologies, Inc. | Method and system for selecting between two sensor output signals in an electronic throttle system |
DE102005021890A1 (en) * | 2005-05-04 | 2006-11-09 | E.G.O. Elektro-Gerätebau GmbH | Operating device and method for evaluating an operating device |
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DE102013207750A1 (en) * | 2013-04-29 | 2014-10-30 | Robert Bosch Gmbh | Sensor device with disjoint value ranges |
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JPH0717007Y2 (en) * | 1987-05-28 | 1995-04-19 | 日産自動車株式会社 | Vehicle speed sensor-Abnormality detection device |
JPH0730728B2 (en) * | 1987-05-30 | 1995-04-10 | マツダ株式会社 | Engine idle speed controller |
IT1218996B (en) * | 1988-02-05 | 1990-04-24 | Weber Srl | CONVERSION SYSTEM OF A SIGNAL COMING FROM A LINEAR CHARACTERISTIC TRANSDUCER TO OBTAIN MODIFIED ACQUISITION RESOLUTIONS |
DE3812760C2 (en) * | 1988-04-16 | 1996-10-24 | Vdo Schindling | Method and arrangement for monitoring a setpoint generator |
DE3840148A1 (en) * | 1988-11-29 | 1990-05-31 | Bosch Gmbh Robert | METHOD AND DEVICE FOR DETECTING AN ERROR STATE OF A LAMB PROBE |
JPH06100132B2 (en) * | 1989-08-30 | 1994-12-12 | マツダ株式会社 | Engine controller |
DE3928709A1 (en) * | 1989-08-30 | 1991-03-07 | Bosch Gmbh Robert | METHOD AND DEVICE FOR CHECKING THE FUNCTIONALITY OF AN EXHAUST GAS EXHAUST HEATING AND ITS SUPPLY SYSTEM |
JP2832049B2 (en) * | 1989-12-08 | 1998-12-02 | マツダ株式会社 | Engine air-fuel ratio control device |
-
1990
- 1990-02-10 DE DE4004083A patent/DE4004083A1/en not_active Withdrawn
-
1991
- 1991-01-19 DE DE59106651T patent/DE59106651D1/en not_active Expired - Lifetime
- 1991-01-19 JP JP3502592A patent/JP2854709B2/en not_active Expired - Fee Related
- 1991-01-19 US US07/768,728 patent/US5224453A/en not_active Expired - Fee Related
- 1991-01-19 ES ES91902506T patent/ES2079640T3/en not_active Expired - Lifetime
- 1991-01-19 EP EP91902506A patent/EP0468007B1/en not_active Expired - Lifetime
- 1991-01-19 WO PCT/DE1991/000042 patent/WO1991012423A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9112423A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0468007B1 (en) | 1995-10-11 |
DE4004083A1 (en) | 1991-08-14 |
ES2079640T3 (en) | 1996-01-16 |
DE59106651D1 (en) | 1995-11-16 |
US5224453A (en) | 1993-07-06 |
WO1991012423A1 (en) | 1991-08-22 |
JP2854709B2 (en) | 1999-02-03 |
JPH04505495A (en) | 1992-09-24 |
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