Pumps – Expansible chamber type – Having pulsation dampening fluid receiving space
Patent
1998-04-22
2000-04-25
Jeffery, John A.
Pumps
Expansible chamber type
Having pulsation dampening fluid receiving space
417309, 417311, 417542, 123446, 123450, 123506, 123447, 138 30, F04B 1100
Patent
active
060537124
ABSTRACT:
A cylinder injection high-pressure fuel pump prevents the pulsations of fuel generated by a high-pressure fuel pump from spreading to a low-pressure pipe connected to a low pressure end. The cylinder injection high-pressure fuel pump has: a casing (1) in which an inlet passage (2) for taking fuel in and a discharge passage (35) for draining the fuel are formed; a cylinder (30) formed in the casing (1); a fuel pressurizing chamber (32) formed in a part of the cylinder (30); and a plunger (31) disposed in the cylinder (30) such that is may reciprocate therein. As the plunger (31) reciprocates, the fuel is taken into the fuel pressurizing chamber (32) through the inlet passage (2)and pressurized therein, then the pressurized fuel is discharged through the discharge passage (35) and forcibly fed into a fuel injector of a cylinder injection type engine. The inlet passage (2) is equipped with a check valve (70).
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Konishi Keiichi
Onishi Yoshihiko
Fastovsky Leonid
Jeffery John A.
Mitsubishi Denki & Kabushiki Kaisha
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