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    • 7. 发明公开
    • VERFAHREN ZUM BETREIBEN EINER BRENNKRAFTMASCHINE MIT MEHRSTUFIGER ÖLPUMPE
    • 一种用于操作内燃机用多级油泵
    • EP2569519A1
    • 2013-03-20
    • EP11723869.1
    • 2011-05-02
    • Volkswagen Aktiengesellschaft
    • WINDRICH, DirkWACHTENDORF, Axel
    • F01M1/02F01M1/18F01L1/344F16N13/00F04C14/00
    • F01M1/02F01L1/34F01L2001/3445F01M1/16F01M1/18
    • The invention relates to a method for operating an internal combustion engine, wherein in an oil circuit (14) of the internal combustion engine, in particular for forced-feed lubrication, a first oil pressure stage having a first minimum and maximum oil pressure level and at least one second oil pressure stage having a second minimum and maximum oil pressure level are alternatively produced by an oil pump (12), wherein the first minimum oil pressure level is less than or equal to the second minimum oil pressure level and the first maximum oil pressure level is less than the second maximum oil pressure level, wherein a camshaft (16) of the internal combustion engine is hydraulically adjusted by an actuator (18) by means of an oil pressure from the oil circuit (14) of the internal combustion engine. During the adjustment, a first adjustment speed of the camshaft (16) is set by the actuator (18) while the first oil pressure stage is produced by the oil pump (12), wherein a second adjustment speed of the camshaft (16) is set by the actuator (18) for at least one second oil pressure stage while the second oil pressure stage is produced by the oil pump (12), wherein at least one difference between the first and at least one second adjustment speed is determined, wherein a switching mechanism (20) of the oil pump (12) for switching between the oil pressure stages is classified as being in order if a magnitude of the difference is greater than or equal to a predetermined difference value, and the switching mechanism (20) of the oil pump (12) for switching between the oil pressure stages is classified as defective if a magnitude of the difference is less than a predetermined difference value.
    • 10. 发明授权
    • SCHALTUNGSANORDNUNG UND VERFAHREN ZUR REGELUNG EINER ELEKTRISCHEN KRAFTSTOFFPUMPE IN EINEM RÜCKLAUFFREIEN KRAFTSTOFF-FÖRDERSYSTEM
    • SCHALTUNGSANORDNUNG UND VERFAHREN ZUR REGELUNG EINER ELEKTRISCHEN KRAFTSTOFFPUMPE in EINEMRÜCKLAUFFREIENKRAFTSTOFF-FÖRDERSYSTEM
    • EP1415077B1
    • 2006-01-04
    • EP02791482.9
    • 2002-07-29
    • Volkswagen Aktiengesellschaft
    • KAHLERT, AndreasSCHILLING, RalfRITSCHEL, MichaelWACHTENDORF, Axel
    • F02D41/30F02D41/38F02D41/40
    • F02D41/3854F02D41/065F02D41/3082F02D41/406F02D2041/1433F02D2200/0414F02D2200/0606F02D2200/501F02D2250/02F02D2250/31Y02T10/44
    • The invention relates to a circuit arrangement and method for controlling an electric fuel pump in a non-return fuel delivery system that comprises an electric fuel pump (1) arranged in a fuel tank (2) for delivering fuel from the fuel tank to a first fuel line (3) to a high-pressure pump (4) that is linked with fuel injection valves (7) via a second fuel line (5). The circuit arrangement further comprises a motor control (9) that controls the pump capacity of the electric fuel pump (1) and a control circuit (11) that is preferably integrated in the motor control (9) and that determines the required pump capacity of the electric fuel pump (1) and outputs a control signal to the motor control (9) that corresponds to the required pump capacity determined. The circuit arrangement is specifically characterized in that the control circuit (11) is provided with a temperature model circuit (18) for determining the highest temperature (Tmax) present in the fuel delivery system, thereby controlling the required pump capacity of the electric fuel pump (1) in accordance with the highest temperature present in the fuel delivery system that was determined.
    • 本发明涉及一种用于控制单向燃料输送系统中的电动燃料泵的电路装置和方法,其包括布置在燃料箱(2)中的电动燃料泵(1) 燃料管路(3)连接到通过第二燃料管路(5)与燃料喷射阀(7)连接的高压泵(4)。 该电路装置进一步包括控制电动燃料泵(1)的泵容量的电动机控制装置(9)和优选集成在电动机控制装置(9)中的控制电路(11),并且该电路装置确定所需的泵容量 电动燃油泵(1)并且向马达控制器(9)输出控制信号,该控制信号对应于所确定的所需泵容量。 该电路装置的特征在于,控制电路(11)设有用于确定燃料输送系统中存在的最高温度(Tmax)的温度模型电路(18),由此控制电动燃料泵的所需泵容量 (1)根据确定的燃料输送系统中存在的最高温度。