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    • 7. 发明授权
    • Process for regulating the injection quantities of injectors of a
fuel-injecting internal-combustion engine
    • 用于调节燃料喷射内燃机喷射器喷射量的方法
    • US5975056A
    • 1999-11-02
    • US5829
    • 1998-01-12
    • Ulrich AugustinVolker Schwarz
    • Ulrich AugustinVolker Schwarz
    • F02D41/38F02M39/00
    • F02D41/3809F02D2200/0602
    • In a process for regulating the injection quantities of injectors which are fluidically connected with a common pressure line in a common-rail injection system of an internal-combustion engine, a fuel pump provides fuel in the pressure line under a static nominal pressure. Control signals for opening and closing within individual injection periods for achieving respective identical injection quantities are supplied to the injectors by a regulator unit. In the case of different flow rates of the individual injectors respective identical injection quantities are achieved by the regulator unit by changing the respective injection period on the basis of a measuring signal. For this purpose, a pressure gauge inserted into the pressure line generates a measuring signal from a measurement of the static measuring pressure in the pressure line in each case after the closing of an injector. From the difference between the nominal pressure before the injection and the differential pressure after the injection, the regulator unit determines the fuel quantity taken from the pressure line during the injection. In case of a deviation from a known desired value, the regulator causes a corresponding change of the injection period of the diagnosed injector.
    • 在用于调节在内燃机的共轨喷射系统中与公共压力线流体连接的喷射器的喷射量的过程中,燃料泵在静态标称压力下在压力管线中提供燃料。 用于实现各自相同的喷射量的各个喷射周期内的打开和关闭的控制信号通过调节器单元提供给喷射器。 在各个喷射器的不同流量的情况下,通过基于测量信号改变相应的喷射周期,通过调节器单元实现各自相同的喷射量。 为此,插入压力管线的压力表在关闭喷射器之后的每种情况下,测量压力线中的静态测量压力,产生测量信号。 从注射前的公称压力和注射后的压差之间的差异,调节器单元确定在注射期间从压力管线获取的燃料量。 在偏离已知的期望值的情况下,调节器引起诊断的注射器的注射周期的相应变化。
    • 8. 发明授权
    • Method of controlling an internal combustion engine upon detection of a
fault inn a fuel injection system
    • 检测燃油喷射系统中的故障时控制内燃机的方法
    • US5727516A
    • 1998-03-17
    • US823381
    • 1997-03-24
    • Ulrich AugustinVolker Schwarz
    • Ulrich AugustinVolker Schwarz
    • F02D41/22F02D41/38F02M63/02F02M37/04
    • F02D41/3809F02D41/22F02D41/221F02M63/0205F02M63/0225F02D2041/224
    • In a method of controlling the operation of an internal combustion engine with fuel injection by way of a common high pressure (common rail) fuel supply line to which high pressure fuel is supplied by a high pressure fuel pump and from which fuel is admitted to the various cylinders of the internal combustion engine by valve controlled fuel injection nozzles, the fuel pressure in the common fuel supply line between the end of an injection and the start of a fuel supply period is monitored at distinct timely spaced measurement points and, if a pressure difference between the measurement points is sensed in excess of a predetermined limit value indicating an injector malfunction, the high pressure fuel supply to the common fuel supply line is interrupted by deactivating the high pressure fuel pump while fuel injection through the operative nozzles is maintained so as to rapidly reduce the pressure in the common fuel supply line.
    • 在通过通过高压燃料泵供给高压燃料的共同的高压(共轨)燃料供给管线来控制具有燃料喷射的内燃机的运转的方法中, 通过阀控制的燃料喷射喷嘴的内燃机的各种气缸,在不同的时间间隔的测量点监测在喷射结束和燃料供应周期开始之间的共同燃料供应管线中的燃料压力,并且如果压力 感测到测量点之间的差异超过指示喷射器故障的预定极限值,通过使通过操作喷嘴的燃料喷射被维持而停止高压燃料泵而中断到公共燃料供应管线的高压燃料供应, 以迅速降低通用燃料供应管路中的压力。