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    • 76. 发明公开
    • FUEL SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE AND CONTROL DEVICE FOR THE FUEL SUPPLY DEVICE
    • BRENNSTOFFZUFÜHRVORRICHTUNGFÜREINEN VERBRENNUNGSMOTOR UND STEERERFAFAHRENFÜRDIEBRENNSTOFFZUFÜHRRORRICHTUNG
    • EP2096297A1
    • 2009-09-02
    • EP07850776.1
    • 2007-12-18
    • Toyota Jidosha Kabushiki Kaisha
    • TASHIMA, KazuchikaYOSHIDOME, ToshioSUZUKI, HiromasaIWASHITA, Seiji
    • F02M55/02F02D41/04
    • F02M55/00F02D41/3854F02M37/0052F02M37/025F02M37/106F02M63/025F02M63/0295
    • A fuel supply device has a main line, a fuel pump, a first return line, a second return line, a valve mechanism, a first pressure regulator, and a second pressure regulator. The fuel pump is arranged in a fuel tank or in the vicinity of the fuel tank, and pressurizes the fuel in the fuel tank and supplies the furl to a fuel distribution pipe via the main line. The first return line returns the fuel from the fuel distribution pipe to the fuel tank. The second return line is branched from the main line in the vicinity of the fuel pump and returns the fuel from the main line to the fuel tank. The valve mechanism selectively connects and disconnects the second return line with respect to the main line. The first pressure regulator is arranged in the first return line. The second pressure regulator is provided in the second return line and adjusts fuel pressure to a lower level than the first pressure regulator does.
    • 燃料供给装置具有主管路,燃料泵,第一返回管路,第二返回管路,阀机构,第一压力调节器和第二压力调节器。 燃料泵配置在燃料箱内或燃料箱附近,对燃料箱内的燃料进行加压,并通过主管将燃料供给燃料分配管。 第一返回线将燃料从燃料分配管返回到燃料箱。 第二返回线从燃料泵附近的主线分支,并将燃料从主线返回到燃料箱。 阀机构相对于主线选择性地连接和断开第二返回线。 第一压力调节器布置在第一回流管线中。 第二压力调节器设置在第二返回管线中,并将燃料压力调节到比第一压力调节器低的水平。
    • 77. 发明公开
    • VORRICHTUNG ZUM FÖRDERN VON KRAFTSTOFF
    • VORRICHTUNG ZUMFÖRDERNVON KRAFTSTOFF
    • EP2087225A1
    • 2009-08-12
    • EP07821300.6
    • 2007-10-15
    • Robert Bosch GmbH
    • SCHELHAS, Peter
    • F02M37/00
    • F02M37/106F02M37/0029F02M37/0052F02M37/025
    • Apparatuses for delivering fuel are already known, having a delivery assembly which supplies fuel at increased pressure to an internal combustion engine via a pressure line, wherein a non-return valve and a filter are provided in the pressure line and a pressure relief line having a pressure relief valve branches off from the pressure line downstream of the filter. It is disadvantageous that the opening pressure of the pressure relief valve has to lie above the maximum system pressure which is built up by the delivery assembly, since the delivery assembly could otherwise not build up the electronically regulated system pressure during operation. As a result, the pressure line including the filter is loaded with the high opening pressure over a relatively long time period in the case of being switched off, with the result that the pressure line, in particular the filter, has to be of accordingly pressure-resistant design. The apparatus according to the invention is improved in such a way that the regulation of the delivery assembly is independent of the setting of the pressure relief valve. There is provision according to the invention for the opening pressure of the pressure relief valve (23) to lie below the maximum system pressure which is built up by the delivery assembly (1) and for a restrictor (24) to be provided in the pressure relief line (22).
    • 用于输送燃料的装置是已知的,其具有经由压力管线将增压的燃料提供给内燃机的输送组件,其中止回阀和过滤器设置在压力管线中,并且压力释放管线具有 减压阀从过滤器下游的压力管线分支。 不利的是,泄压阀的打开压力必须高于由输送组件构成的最大系统压力,因为输送组件可能在运行期间不会积累电子调节的系统压力。 结果,在关闭的情况下,包括过滤器的压力管线在相对长的时间段内被加载高打开压力,结果是压力线,特别是过滤器必须相应地受到压力 抗拒设计。 改进了本发明的设备,使得输送组件的调节与排压阀的设定无关。 根据本发明,压力释放阀(23)的打开压力设置在由输送组件(1)构建的最大系统压力以下并且限制器(24)被设置在压力下 救生线(22)。