现代进口轿车普遍装用汽油喷射式发动机。这种发动机的燃料供给系统与化油器式的燃料供给系统相比较,不仅结构复杂而且零件配合精密。燃料供给系统包括电动汽油泵、脉动阻尼器、压力调节器、油量分配器、输油管、喷油器和冷起动阀、氧化传感器、三效催化转换器等部件。困难的是,有的部件不可以或不允许分解拆卸,从外部无法清洁保养;有的部件精密,装置质量要求高,这就使汽油喷射系统比化油器更易受到汽油中胶质沉积的危害,使清洁工作无 Modern imported cars are generally equipped with gasoline injection engine. This engine fuel supply system compared with carburetor-type fuel supply system, not only the complexity of the structure and precision parts. Fuel supply systems include electric gasoline pumps, pulsation dampers, pressure regulators, fuel dispensers, pipelines, injector and cold start valves, oxidation sensors, three-way catalytic converters and more. Difficult is that some of the components can not disassemble or disassemble, from the outside can not be cleaned and maintained; some precision components, the device requires high quality, which makes the gasoline injection system more susceptible to carburetor gasoline than the deposition of the hazards No cleaning work