Patent ID: 6112721
Filing Date: 2000-09-05
Classification: F02D,F02M

Abstract:
A fuel injection system comprising:a first accumulator for storing high-pressure fuel therein;a second accumulator for storing low-pressure fuel sufficiently lower in pressure than said fuel stored in said first accumulator;a first two-way electromagnetic valve disposed in a first fuel passage connecting said first accumulator with a fuel injection nozzle;a flow control means for controlling a flow rate of fuel passing through a second fuel passage connecting a downstream side of said first two-way electromagnetic valve in said first fuel passage with said second accumulator, said flow control means being disposed in said second fuel passage;a second two-way electromagnetic valve disposed in a fuel return passage connecting said fuel injection nozzle with the fuel tank, said second two-way electromagnetic valve switching the fuel injection modes of said fuel from its injection mode to its non-injection mode or vice versa; anda control means for controlling both said first two-way electromagnetic valve and said second two-way electromagnetic valve so as to open and close them in response to engine's operating conditions.