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Unit 5 FUEL SUPPLY SYSTEM FOR GASOLINE ENGINE 汽油机燃油供给系统
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图5.1 Fuel supply system for gasoline engine汽油机燃油供给系统的组成
1—fuel tank燃油箱;2—electric fuel pump电动汽油泵;3—fuel filter燃油滤清器;4—rail return pipe回油管;5—injector喷油器;6—pulsation damper脉动阻尼器;7—distribution pipe分配油管;8—fuel pressure regulator油压调节器;9—oil pipeline输油管
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图5.2 Fuel supply system燃油供给系统的组成
1—fuel pressure regulator燃油压力调节器;2—distribution pipe燃油分配管;3—electric fuel pump电动燃油泵;4—fuel filter燃油滤清器;5—pulsating damper脉动阻尼器;6—injector喷油器
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图5.3 Fuel tank燃油箱
(a)partial profile局部剖;(b)structure结构
1—baffle plate隔板;2、5—fuel delivery tube加油管;3—fuel tank for passenger car小客车油箱;4—fuel tank for wagon货车油箱
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图5.4 Fuel delivery tube and vent pipe加油管和通气管
1—fuel tank油箱;2—vent pipe通气管;3—tank cap油箱盖;4—fuel delivery tube加油管
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图5.5 Electric fuel pump and fuel level sensor电动汽油泵和油面传感器
1—fuel level sensor油面传感器;2—electric fuel pump电动汽油泵;3—fuel filter net滤网;4—float浮子
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图5.6 Ball electric fuel pump滚柱式电动汽油泵
1—fuel inlet进油口;2—relief valve限压阀;3—oil pump油泵;4—check valve单向阀;5—buffer缓冲器;6—electric engine电动机;7—fuel outlet出油口;8—ball滚柱;9—rotor转子;10—pump housing泵体A—outlet出油;B—inlet进油
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图5.7 Impeller electric fuel pump叶轮式电动汽油泵
1—filter net滤网;2—rubber cushion橡胶缓冲垫;3—rotor转子;4—bearing轴承;5—magnet磁铁;6—armature电枢;7—carbon brush电刷;8—bearing轴承;9—relief net限压网;10—one-way valve单向阀
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图5.8 Fuel filter燃油滤清器
(a)partial profile局部剖;(b)structure结构
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图5.9 Distribution rail分配油管
1—distribution rail分配油管;2—injector喷油器;3—fuel pressure regulator油压调节器
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图5.10 Injector喷油器
1—needle针阀;2—armature电枢;3—plug插头;4—fuel inlet进油口;5—solenoid coil电磁线圈;6—spray orifice喷孔
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图5.11 Fuel pressure regulator油压调节器
1—diaphragm膜片;2—return valve回油阀;A—inlet进油口;B—outlet出油口;C—vacuum joint真空接口
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图5.12 Fuel pressure damper油压缓冲器
1—spring弹簧;2—diaphragm膜片;3—fuel燃油
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图5.13 Returnless fuel system无回油管的燃油系统
1—injector喷油器;2—distribution pipe分配油管;3—outlet pipe输油管;4—pressure regulator油压调节器;5—fuel tank燃油箱;6—fuel pump and fuel filter assembly燃油泵及燃油滤清器总成;7—inlet filter net进油滤网;8—electric fuel pump电动汽油泵;9—fuel filter燃油滤清器
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图5.14 In-tank fuel pressure regulator燃油箱内的油压调节器
1—inlet filter net进油滤网;2—outlet pipe输油管;3—valve阀;4—fuel pressure regulator油压调节器;5—return fuel回油;6—fuel filter燃油滤清器
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图5.15 Electric control system for engine发动机电控系统
1—oil tank汽油箱;2—electric fuel pump电动汽油泵;3—fuel filter燃油滤清器;4—distribution pipe分配油管;5—fuel pressure regulator油压调节器;6—ECU电控单元;7—oxygen sensor氧传感器;8—injector喷油器;9—coolant-temperature sensor冷却液温度传感器;10—throttle节气门;11—throttle position sensor节气门位置传感器;12—idle control valve怠速控制阀;13—flow meter空气流量计;14—crankshaft position sensor曲轴位置传感器;15—battery蓄电池;16—ignition switch点火开关;17、18—replay继电器