Unit 5 FUEL SUPPLY SYSTEM FOR GASOLINE ENGINE 汽油机燃油供给系统

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

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

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

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

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

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

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

图5.8 Fuel filter燃油滤清器

(a)partial profile局部剖；(b)structure结构

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

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

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

图5.12 Fuel pressure damper油压缓冲器

1—spring弹簧；2—diaphragm膜片；3—fuel燃油

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

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

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