FUEL PRESSURING PUMP FOR FUEL INJECTION DEVICE
PROBLEM TO BE SOLVED: To feed a sufficient amount and pressure of fuel to an injector without making the device in a large size, without increasing the motive power loss, and the like, in the engine starting time. SOLUTION: To a pressure regulating passage 51 communicating to an injector 4, an accum...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To feed a sufficient amount and pressure of fuel to an injector without making the device in a large size, without increasing the motive power loss, and the like, in the engine starting time. SOLUTION: To a pressure regulating passage 51 communicating to an injector 4, an accumulator 58 for pressure accumulation is connected by branching. A solenoid valve 59 is provided in the fuel input/output passage 57 of the accumulator 58 for pressure accumulation. The solenoid valve 59 is controlled to open and close by a controller 60. During the engine operating, the solenoid valve 59 is opened, and a high pressure fuel is accumulated and stored in the accumulator 58 for pressure accumulation. When the engine is stopped, the solenoid valve 59 is closed, and the high pressure fuel is stored in the accumulator 58 for pressure accumulation as it is. When the engine is started after that, the solenoid valve 59 is opened again, and the high pressure fuel in the accumulator 58 for pressure accumulation is fed to the injector 4 at a stroke. |
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