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    • 116. 发明公开
    • LIQUEFIED GAS FUEL SUPPLY DEVICE OF DIESEL ENGINE
    • 佛罗里达州克拉夫斯坦弗吉尼亚州吉尔吉斯斯坦
    • EP1775457A1
    • 2007-04-18
    • EP05758249.6
    • 2005-07-05
    • Bosch Corporation
    • NOZAKI, Shinya, BOSCH CORPORATIONNODA, Toshifumi, BOSCH CORPORATIONUSHIYAMA, Daijo, BOSCH CORPORATIONISHIKAWA, Teruaki, BOSCH CORPORATIONHAYASAKA, Yukihiro, BOSCH CORPORATION
    • F02M37/00F02M59/44
    • F02M59/44F02D19/022F02D19/027F02D33/006F02M21/0212F02M21/0224F02M21/0245Y02T10/32
    • In a diesel engine system of a liquefied gas fuel, the present invention aims at the prevention of storing of the liquefied gas fuel in a cam chamber even when a diesel engine repeats stopping and operation thereof without returning the liquefied gas fuel in a fuel gallery of a fuel pressurizing device such as a supply pump or an injection pump to a fuel tank. An electrically-operated compressor 16e is subjected to an ON/OFF control by a cam chamber pressure regulating part 20. In the inside of a cam chamber 12, a cam chamber pressure sensor 121 which detects a pressure in the inside of the cam chamber 12 is arranged. A cam chamber pressure regulating part 20 performs an OFF control of the electrically-operated compressor 16e when a detected pressure of the cam chamber pressure sensor 121 is a predetermined value or less, and performs an ON control of the electrically-operated compressor 16e so as to reduce the pressure in the inside of the cam chamber 12 to the predetermined pressure or less at a point of time that the detected pressure of the cam chamber pressure sensor 121 exceeds the predetermined pressure thus reducing the pressure in the inside of the cam chamber 12 by suction.
    • 在液化气燃料的柴油发动机系统中,本发明的目的在于防止液化气燃料储存在凸轮室中,即使柴油机重复停止和操作,也不返回液化气燃料 燃料加压装置,例如供给泵或喷射泵到燃料箱。 电动压缩机16e通过凸轮室压力调节部20进行ON / OFF控制。在凸轮室12的内部,检测凸轮室12内部的压力的凸轮室压力传感器121 被安排。 当凸轮室压力传感器121的检测压力为预定值或更小时,凸轮室压力调节部件20执行电动压缩机16e的OFF控制,并且对电动压缩机16e进行ON控制,以便 在凸轮室压力传感器121的检测压力超过预定压力的时间点将凸轮室12内部的压力降低至预定压力或更小,从而降低凸轮室12内部的压力 通过吸力。