Patent
High pressure pump
TLDR
In this article, an opening sectional area of the communication hole is defined in such a manner that a fuel discharged amount decreases as an energization start time of a coil is delayed.Abstract:
Between a movable core chamber and a fuel supply passage, a needle guide slidably supports a needle fixed to a movable core. The needle guide has a communication hole which fluidly connects the movable core chamber and the fuel supply passage. An opening sectional area of the communication hole is defined in such a manner that a fuel discharged amount decreases as an energization start time of a coil is delayed. In a suction stroke, it is restricted that the movable core and the needle bounce toward the fixed core after the needle biases a suction valve toward a stopper by means of a biasing force of a second spring. A relationship between the energization start time of the coil and the fuel discharged amount is properly maintained, so that the fuel discharged amount of the high-pressure pump can be controlled correctly.read more
Citations
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Patent
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References
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Patent
Fuel injection pump
Suenaga Kouichi,Obata Atsumi +1 more
TL;DR: In this paper, the authors proposed to improve an engine starting property and reduce the generation of graphite by electrically controlling opening/closing of an overflow valve for allowing part of fuel which is fed under pressure into a fuel injection nozzle to escape, in accordance with the operating condition of a diesel engine.
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TL;DR: In this paper, a fuel pumping apparatus for supplying fuel to an internal combustion engine has a plurality of pumping plungers which are housed in respective bores, and during such movement one of the plungers moves to an outer position in which a fuel supply passage (21) which communicates with a fuel outlet (22) is uncovered to the pump working chamber (20) defined at the inner ends of the bores.
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TL;DR: In this paper, a laterally extending bunsen valve having an annular spring washer which resiliently bears against the annular valve seat adjacent the discharge opening is used for discharge valving of a liquid dispensing pump.