| 摘要 |
PCT No. PCT/US92/04666 Sec. 371 Date Dec. 5, 1994 Sec. 102(e) Date Dec. 5, 1994 PCT Filed Jun. 5, 1992 PCT Pub. No. WO93/25888 PCT Pub. Date Dec. 23, 1993A method and apparatus is described for cleaning the fuel injection system of a vehicle without disassembling the fuel injectors from the vehicle engine. The apparatus includes a pump separate and apart from the vehicle for feeding fuel into the fuel supply system and a controller for controlling the pump. The controller operates at least one fuel injector while the injector is disposed in operable association with said vehicle engine, and the pump operates in a fuel feeding mode and in a fuel withdrawing mode whereby to retract fuel from the system. The system associates said pump with said fuel supplying system and disables said fuel supplying system to permit said pump to be the sole source of the fuel supply for said at least one fuel injector. Further, the apparatus comprises a flow measuring device for measuring the flow of fuel through each injection valve during the operation of the injection valve and while the injection valve is operably secured to and associated with said engine, and a pulse controller for controlling the duration of fuel flow through each injection valve.
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