DE102005014161A1 - Method for determining fuel pressure of common rail in fuel injection system for internal combustion (IC) engine, by adding up average of detected fuel pressures and its variable based on transient engine operating conditions - Google Patents

Method for determining fuel pressure of common rail in fuel injection system for internal combustion (IC) engine, by adding up average of detected fuel pressures and its variable based on transient engine operating conditions

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Publication number
DE102005014161A1
DE102005014161A1 DE200510014161 DE102005014161A DE102005014161A1 DE 102005014161 A1 DE102005014161 A1 DE 102005014161A1 DE 200510014161 DE200510014161 DE 200510014161 DE 102005014161 A DE102005014161 A DE 102005014161A DE 102005014161 A1 DE102005014161 A1 DE 102005014161A1
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Germany
Prior art keywords
fuel pressure
fuel
pressure sensor
internal combustion
value
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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
Application number
DE200510014161
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German (de)
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DE102005014161B4 (en
Inventor
Jürgen DINGL
Gerhard Eser
Gerhard Dr. Schopp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
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Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
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Priority to DE200510014161 priority Critical patent/DE102005014161B4/en
Publication of DE102005014161A1 publication Critical patent/DE102005014161A1/en
Application granted granted Critical
Publication of DE102005014161B4 publication Critical patent/DE102005014161B4/en
Active legal-status Critical Current
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/30Controlling fuel injection
    • F02D41/38Controlling fuel injection of the high pressure type
    • F02D41/3809Common rail control systems
    • F02D41/3836Controlling the fuel pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/14Introducing closed-loop corrections
    • F02D41/1401Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1413Controller structures or design
    • F02D2041/1432Controller structures or design the system including a filter, e.g. a low pass or high pass filter
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2200/00Input parameters for engine control
    • F02D2200/02Input parameters for engine control the parameters being related to the engine
    • F02D2200/06Fuel or fuel supply system parameters
    • F02D2200/0602Fuel pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/30Controlling fuel injection
    • F02D41/38Controlling fuel injection of the high pressure type
    • F02D41/3809Common rail control systems
    • F02D41/3836Controlling the fuel pressure
    • F02D41/3845Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/30Controlling fuel injection
    • F02D41/38Controlling fuel injection of the high pressure type
    • F02D41/3809Common rail control systems
    • F02D41/3836Controlling the fuel pressure
    • F02D41/3863Controlling the fuel pressure by controlling the flow out of the common rail, e.g. using pressure relief valves

Abstract

The average of the detected fuel pressures of a common rail (7), obtained from a fuel pressure sensor (11), and the temporal deviation or variable in the detected fuel pressures, are added up to determine the true fuel pressure of the common rail. The variable is dependent on transient engine operating conditions, such as number of revolutions per minute or output torque, air mass flow, etc. An independent claim is also included for a device for determining the fuel pressure of a common rail.

Description

  • The The present invention relates to a method and an apparatus for determining the fuel pressure values of a high-pressure fuel system dependent on the operating conditions an internal combustion engine.
  • at Internal combustion engines with high-pressure fuel system takes place from the Fuel pressure accumulator over the injectors direct fuel injection into the Cylinder. The high-pressure fuel system contains, in addition to the fuel pressure accumulator, a high pressure pump fed by a low pressure fuel circuit. By regulating the fuel pressure in the fuel pressure accumulator can control the amount of fuel injected into the cylinders and to the respective operating states of the internal combustion engine be adjusted. For a regulation becomes the current pressure value in the fuel pressure accumulator needed.
  • A Accurate detection of the fuel pressure is thus a prerequisite for optimal Feeding the desired Amount of fuel in the combustion chambers of single cylinder. The measurement of the current values of the fuel pressure over a fuel pressure sensor. In a control unit (ECU) this is Value for controlling the fuel pressure in the fuel pressure accumulator further processed. Too high or too low with the fuel pressure sensor Value can cause the actual injected into the cylinder Fuel quantity deviates from the actual desired amount of fuel. This results in a deviation of the prevailing in the cylinders Air / fuel ratio from the desired Relationship. increased Fuel consumption, high pollutant emissions and reduced efficiency the internal combustion engine can as a result of the non-optimal air / fuel ratio occur.
  • The Signals of the fuel pressure sensor are in a control unit further processed. The calculation of the fuel pressure value takes place by averaging the temporally successive ones Signals to cyclic pressure fluctuations due to the discontinuous advancement fuel pump and discontinuous injection too consider. Usually is the mean of several, z. B. ten consecutive fuel pressure readings, educated. This average represents the value of the fuel pressure in the fuel pressure accumulator for the averaging period. Of the Comparison of this value with the setpoint of the fuel pressure leads to a Default value for to promote the from the high-pressure pump in the fuel pressure accumulator Fuel quantity.
  • in the Trap of high temporal changes of the Fuel pressure in the fuel pressure accumulator, such. When starting, during overrun fuel cut-off or during the transition from partial to full load, leads the Averaging to a delayed Adjustment of the calculated fuel pressure value to the transient operating conditions the internal combustion engine. The difference formed by the controller between the calculated fuel pressure value and the setpoint is bad adapted to the current operating state. By this difference is the supply of fuel, and thus the pressure in the fuel pressure accumulator certainly. As a result of bad at the current operating condition adjusted pressure, the amount of fuel injected into the cylinder is the same faulty. This results in disadvantages in the development of torque, consumption and pollutant emissions.
  • DE 103 23 874 A1 discloses a method for controlling the fuel pressure in a fuel pressure accumulator of an internal combustion engine, wherein the pressure is generated via a high-pressure pump. The high-pressure pump is supplied with fuel via a flow control valve. In a first operating mode, the pressure in the fuel pressure accumulator is controlled by the inflow of fuel from a flow control valve to the target pressure. In a second mode of operation, the control is carried out to the target pressure by the return flow of fuel from the fuel pressure accumulator into the low pressure circuit by means of a regulator valve. The second mode is at very small injection quantities into the cylinder, such. B. idle used. The dependent on the operating condition of the engine target pressure in the fuel pressure accumulator is checked by a pressure sensor.
  • The The object of the invention is a method and a device for determining the fuel pressure values in the fuel pressure accumulator available too set, even in transient operating conditions of the internal combustion engine allows accurate determination of the fuel pressure values.
  • The Task is solved by the characteristics of the independent Claims. Advantageous embodiments of the invention are characterized in the subclaims.
  • The invention is characterized by a method and a corresponding device for determining the fuel pressure values in a fuel pressure accumulator by taking into account the time change of the measured values of a fuel pressure sensor located in the fuel pressure accumulator in the calculation of the fuel pressure value. For this purpose, the measured values are in a control unit of the fuel pressure sensor is detected and an average value p m is formed from a plurality of successive measured values. Furthermore, a factor F dependent on the time change of the measured values of the fuel pressure sensor is calculated in the control unit. The fuel pressure value p is formed from the sum of the mean value and the factor.
  • Equation 1 shows the relationship between the above variables. p = p m + F (Equation 1)
  • Of the thus calculated fuel pressure value represents the value of the fuel pressure in high-pressure fuel storage for the averaging period. By considering one of the temporal change the measured values of the fuel pressure sensor dependent factor is this value, compared to a fuel pressure value exclusively from the Average of measured values of the fuel pressure sensor is formed, better to the currently prevailing pressure value in the fuel pressure accumulator customized. The amount of fuel injected into the cylinders is thus better at the current operating condition of the internal combustion engine customized. Particularly in the case of transient operating states of the internal combustion engine, as at the start or overrun, resulting in this way Advantages in terms of torque development, consumption and the Pollutant emissions.
  • In an advantageous embodiment, the factor is formed from the product of a variable V and the difference between two successive measured values p n -p n-1 of the fuel pressure sensor.
  • Equation 2 shows the relationship between the above sizes. p = p m + F = p m + V (p n - p n-1 ) (Equation 2)
  • The above equation allows the determination of a good to the current operating condition of the internal combustion engine adjusted fuel pressure value, at the same time lower in the control unit for determining the fuel pressure value required computing power and storage requirements.
  • In According to a further advantageous embodiment, the variable is dependent on the operating conditions the internal combustion engine calculated. It can be values in one area between 0 and 1. A value of 0 is the change the measured values of the fuel pressure sensor when determining the fuel pressure value without influence. For the value 1, this influence is maximum. By consideration of operating conditions of the internal combustion engine in the calculation of the variables, is the The fuel pressure value determined using the variables is particularly good adapted to the current operating condition.
  • In In another advantageous embodiment, the calculation takes place depends on the variable from the speed or the torque of the internal combustion engine, the Measured values of a suction pipe absolute pressure sensor or an air mass sensor. The above sizes allow an efficient calculation, since by them the operating condition of the internal combustion engine with a for describe the calculation of the variables with sufficient accuracy.
  • In a further advantageous embodiment of the invention the operating conditions the internal combustion engine assigned two areas. It becomes a stationary state defined, whereby operating conditions are summarized in this area, their temporal change slowly. In this area, the variable takes the value 0 at. Furthermore, a transient becomes Operating state defined, in which transient processes in the temporal Course of the fuel pressure, as z. B. when starting or at occur a setpoint jump, are summarized. In this Area, the variable assumes the value 1. The assignment of the current Operating state in an area is due to the evaluation the temporal change of the values measured with a fuel pressure sensor or other operating parameters the internal combustion engine. By limiting it to two possible value assignments for the Variable becomes the calculation time required in the control unit and the memory requirement reduced to determine the fuel pressure value.
  • In A further advantageous embodiment of the invention is for switching a characteristic curve with hysteresis is provided between the areas. By This measure becomes frequent Switching between the different areas avoided.
  • In a further advantageous embodiment of the invention takes the Variable for determining the fuel pressure value a constant Value. The computing time required in the control unit and the memory requirement to determine the fuel pressure value are minimized by this measure.
  • In a further advantageous embodiment of the invention, a plausibility check of the measured values or the temporal change of the measured values of the fuel pressure sensor is carried out. Due to physical conditions, the gradient of the measured values can not exceed certain limits. So z. B. limits the flow rate of the high-pressure pump and the compressibility of the fuel. This limits the gradient of the measured value to approx. ± 1 bar / ms. The vastness Ren the amount of the measured values of the fuel pressure sensor is limited by a pressure relief valve in the fuel pressure accumulator to a maximum value. If the test gives implausible absolute values or gradients of the fuel pressure sensor readings, the value of the variable is adjusted to the result of the test. So z. For example, the value 0 can be assigned to an invalid gradient of the variables. Thus, the gradient has no influence on the determination of the fuel pressure value. By this embodiment of the invention, the influence of disturbances z. B. are electromagnetically coupled to the measurement signal of the fuel pressure sensor, reduced to the determination of the fuel pressure value.
  • embodiments The invention will be described below with reference to the schematic drawings explained. Show it:
  • 1 an internal combustion engine having a high-pressure fuel system and a device for calculating the fuel pressure values in the fuel pressure accumulator,
  • 2 the time course of a simulated measurement signal of a fuel pressure sensor,
  • 3 the time course of the error of the calculated fuel pressure value according to the usual method and the time course of the error of the fuel pressure value determined by the method according to the invention and
  • 4 the time profiles of the simulated measured value of the fuel pressure sensor, the fuel pressure value calculated according to the customary method, the fuel pressure value determined by the method according to the invention and a reference value.
  • In 1 a high-pressure fuel injection system of an internal combustion engine is shown. The high-pressure fuel injection system has a fuel tank 1 on, from the fuel via a low pressure pump 2 and a supply line 4 a flow control valve 3 is supplied. A pressure relief valve 5 is intended to be at too high a pressure in the supply line 4 Fuel in the fuel tank 1 dissipate. The directly on a high-pressure pump 6 located flow control valve 3 provides the fuel for a high pressure pump 6 ready. The high pressure pump 6 conveys the fuel into a fuel pressure accumulator 7 , Over with the fuel pressure accumulator 7 connected injection valves 8th the fuel enters cylinders of the internal combustion engine. The opening periods of the injectors 8th , the flow control valve 3 , and a regulator valve 10 be from a rule unit 9 controlled. About the regulator valve 10 can fuel from the fuel pressure accumulator 7 into the management 4 be derived to the pressure in the high-pressure fuel storage 7 to diminish.
  • The target pressure in the high-pressure fuel storage 7 is given as a function of the operating state of the internal combustion engine and with the help of one with the control unit 9 connected fuel pressure sensor 11 controlled. The signal of the fuel pressure sensor 11 will be in the rule unit 9 sampled for digital processing. The time-discrete measured values are then stored in memory 12 the control unit 9 stored. To cyclic pressure fluctuations due to the discontinuous promotion of the high-pressure pump 6 and to suppress the discontinuous injection events, the fuel pressure value is usually formed from the mean value of a certain number of consecutive discrete-time measurement values. The method according to the invention provides for a consideration of the temporal change of the measured values of the fuel pressure sensor 11 in determining the fuel pressure value. The difference between the target pressure and the determined fuel pressure value is in the control unit 9 formed and serves as a measure for the calculation of the flow control valve 3 and the regulator valve 10 supplied control signals. By the supply of the flow control valve 3 to the high pressure pump 6 delivered fuel into the fuel pressure accumulator 7 the pressure in the self is increased. So that the pressure in the fuel pressure accumulator 7 does not rise above the set pressure, can via the regulator valve 10 Fuel in the supply line 4 be drained. In addition to the signals of the fuel pressure sensor 11 become the control unit 9 more signals about the operating condition of the internal combustion engine, such as. As speed, torque or load, by a controller 13 fed. control unit 9 and control unit 13 can also be combined into a structural unit. These additional signals can be used in conjunction with the readings of the fuel pressure sensor 11 , are used to determine the variables necessary to determine the fuel pressure values.
  • 2 shows the time course of a simulated measurement signal of the fuel pressure sensor 11 , The noise-superimposed sinusoidal signal is shown for a time range of 1 s. The noise can in reality by coupled interference or systemic noise, such. As caused by a resistor noise voltage caused.
  • In 3 the time profiles of the errors of the calculated according to the usual method fuel pressure value (dashed line) and the fuel pressure value determined by the method according to the invention (solid line) are shown. The calculation of the temporal courses of the Mistake was made for in 2 shown simulated course of the measurement signal of the fuel pressure sensor 11 carried out. The mean values calculated for the respective time segments from the analog measurement signal were taken as reference values for the calculation of the errors, the calculated mean values being defined as being error-free. The duration of a period of time was determined by the calculation of the fuel pressure value according to the usual method and is constant. The fuel pressure value calculated according to the usual method is equal to the mean value of the digitized measured values of the fuel pressure sensor 11 , Since the calculation of this mean value can only take place after the acquisition of the last digitized measured value associated with the time period, a deviation between this mean value and the current measured value of the fuel pressure sensor occurs during transient processes 11 on. This deviation is reduced by the method according to the invention. For the calculation of the fuel pressure value according to the method according to the invention, a variant was chosen in which the variable has the constant value 1. 3 It can be seen that the errors caused by the method according to the invention are on average substantially less than the errors caused by the method commonly used.
  • However, there are some periods when the error caused by the method according to the invention is greater. For example, the time interval between 480 ms and 490 ms. By another variant of the method according to the invention, in which the variable can assume different values, a reduction of the error is possible. Thus, by assigning the value 0 to the variable for these ranges, the error can be reduced. The comparison with 2 It can be seen that it makes sense for stationary states, in the ranges of the maxima and minima of the measured values of the fuel pressure sensor 11 to make this assignment. In contrast, is for transient states, in areas of large changes in the readings of the fuel pressure sensor 11 , the error at a value of the variable of 1 minimal. The distinction between the states can be made on the basis of the evaluation of the time change of the measured values of the fuel pressure sensor or operating parameters of the internal combustion engine.
  • 4 shows the time courses of the simulated measured value of the fuel pressure sensor 11 (solid line), calculated by the usual method fuel pressure value (dotted line) and determined by the inventive method fuel pressure value (dashed line) for a time range of 290 ms to 350 ms. In addition, the time course of the reference value (average value of the analog measured values of the fuel pressure sensor 11 for a period) drawn as a solid line. It can be seen from FIG. 4 that for the illustrated transient state (falling edge of the sinusoidal oscillation) the deviations between the reference value and the fuel pressure value determined according to the method according to the invention are very small. Furthermore, the time delay of the calculated according to the usual method fuel pressure value compared to the current reading of the fuel pressure sensor 11 clear.

Claims (13)

  1. Method for determining the fuel pressure values of a fuel pressure accumulator ( 7 ) of an internal combustion engine, which is a fuel pump ( 6 ) for conveying the fuel into the fuel pressure accumulator ( 7 ) and injectors ( 8th ) for introducing fuel from the fuel pressure accumulator ( 7 ) in cylinder and a fuel pressure accumulator ( 7 ) associated fuel pressure sensor ( 11 Has), characterized denotes ge that the fuel pressure value by the sum of an average of the measured values of the fuel pressure sensor ( 11 ) and one of the temporal change of the measured values of the fuel pressure sensor ( 11 ) dependent factor is formed.
  2. A method according to claim 1, characterized in that the factor of the multiplication of a variable with one of the temporal change of the measured values of the fuel pressure sensor ( 11 ) dependent value is determined.
  3. Method according to claim 2, characterized that the variable is dependent of operating conditions the internal combustion engine is determined.
  4. Method according to one of the preceding claims 2 or 3, characterized in that the determination of the variables in dependence from the speed or the torque of the internal combustion engine, the Measurements of an Saurohrabsolutdrucksensors or the measured values of a Air mass sensor is done.
  5. Method according to claim 3, characterized that the operating conditions the internal combustion engine are assigned to several areas, wherein the value of the variable depends on the assignment of the operating states.
  6. Method according to claim 5, wherein as a decision criterion for the assignment of the operating states of the internal combustion engine to a region, the temporal change of the measured values of the fuel pressure sensor ( 11 ) or operating parameters of the internal combustion engine can be used.
  7. Method according to one of the preceding claims 2 to 6, characterized in that the variable is two different Can accept values.
  8. Method according to one of claims 5 or 6, characterized that for the switching between the areas a characteristic with hysteresis is used.
  9. Method according to claim 2, characterized in that that the variable has a constant value.
  10. Method according to one of the preceding claims 2 to 9, characterized in that a plausibility check of the temporal change of the measured values of the fuel pressure sensor ( 11 ) or the measured values of the fuel pressure sensor ( 11 ), in the case of implausible temporal changes in the measured values of the fuel pressure sensor ( 11 ) or the measured values of the fuel pressure sensor ( 11 ) the value of the variable is changed.
  11. Device for determining the fuel pressure values of a fuel pressure accumulator ( 7 ) of an internal combustion engine, which is a fuel pump ( 6 ) for conveying the fuel into the fuel pressure accumulator ( 7 ) and injectors ( 8th ) for introducing fuel from the fuel pressure accumulator ( 7 ) in cylinder and a fuel pressure accumulator ( 7 ) associated fuel pressure sensor ( 11 ), characterized in that means are provided which determine the fuel pressure value by the sum of an average value of the measured values of the fuel pressure sensor ( 11 ) and one of the temporal change of the measured values of the fuel pressure sensor ( 11 ) dependent factor.
  12. Device according to Claim 11, characterized in that means are provided which determine the factor from the multiplication of a variable by one of the time changes of the measured values of the fuel pressure sensor ( 11 ) dependent value.
  13. Device according to claim 12, characterized in that that means are provided which determine the variable in dependence of operating states of Determine internal combustion engine.
DE200510014161 2005-03-29 2005-03-29 Method and device for determining the fuel pressure values of a high-pressure fuel system Active DE102005014161B4 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007003150A1 (en) * 2007-01-22 2008-07-31 Siemens Ag Method for determining an uncontrolled acceleration of an internal combustion engine
DE102008041577B4 (en) * 2007-08-31 2012-11-22 Denso Corporation Fuel pressure control device for an internal combustion engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19711517A1 (en) * 1996-03-22 1997-11-06 Unisia Jecs Corp Control for smoothing fuel injection in IC engine
DE19726757A1 (en) * 1997-06-24 1999-01-07 Bosch Gmbh Robert Method for controlling and / or regulating an internal combustion engine provided with a plurality of combustion chambers
DE19857971A1 (en) * 1998-12-16 2000-06-21 Bosch Gmbh Robert Controlling an IC engine esp. for IC engine with common rail fuel injection system so that at least one pump delivers fuel in storage
DE10054201A1 (en) * 2000-11-02 2002-05-23 Siemens Ag Method for determining the pressure in a fuel reservoir of a fuel injection, especially common rail, system that is more accurate as short-term pressure reductions caused by the fuel injections processes are filtered out
DE10323874A1 (en) * 2003-05-26 2004-12-30 Siemens Ag Method for operating an internal combustion engine, fuel system and a volume flow control valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19711517A1 (en) * 1996-03-22 1997-11-06 Unisia Jecs Corp Control for smoothing fuel injection in IC engine
DE19726757A1 (en) * 1997-06-24 1999-01-07 Bosch Gmbh Robert Method for controlling and / or regulating an internal combustion engine provided with a plurality of combustion chambers
DE19857971A1 (en) * 1998-12-16 2000-06-21 Bosch Gmbh Robert Controlling an IC engine esp. for IC engine with common rail fuel injection system so that at least one pump delivers fuel in storage
DE10054201A1 (en) * 2000-11-02 2002-05-23 Siemens Ag Method for determining the pressure in a fuel reservoir of a fuel injection, especially common rail, system that is more accurate as short-term pressure reductions caused by the fuel injections processes are filtered out
DE10323874A1 (en) * 2003-05-26 2004-12-30 Siemens Ag Method for operating an internal combustion engine, fuel system and a volume flow control valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007003150A1 (en) * 2007-01-22 2008-07-31 Siemens Ag Method for determining an uncontrolled acceleration of an internal combustion engine
DE102007003150B4 (en) * 2007-01-22 2008-12-11 Continental Automotive Gmbh Method for determining an uncontrolled speed increase of an internal combustion engine
US8108124B2 (en) 2007-01-22 2012-01-31 Continental Automotive Gmbh Method for determining an uncontrolled acceleration of an internal combustion engine
DE102008041577B4 (en) * 2007-08-31 2012-11-22 Denso Corporation Fuel pressure control device for an internal combustion engine

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Owner name: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE