Fuel injection pump for internal combustion engines
A fuel injection pump for an internal combustion engine is described which consists of: a plunger disposed to be rotated and reciprocated; and cam means having a camming surface operatively coupled with the plunger and disposed to be rotatively driven for causing rotation and reciprocation of the plunger to cause same to pressurize drawn fuel and distribute the pressurized fuel, to thereby deliver the pressurized fuel to the engine; the camming surface of the cam means having such a configuration as to include a first angular region for causing the plunger to be lifted for pressurizing drawn fuel during idling of the engine at a first, substantially constant velocity, and a second angular region subsequent to the first angular region for causing the plunger to be lifted for pressurizing drawn fuel at a second velocity higher than the first velocity, and a third angular region preceding the first angular region, for causing the plunger to be lifted for pressurizing drawn fuel at a velocity higher than the first velocity, but lower than the second velocity.
- Assignee:
- Diesel Kiki Co., Ltd., Tokyo
- Patent Number(s):
- US 4685870
- OSTI ID:
- 5927989
- Resource Relation:
- Patent File Date: Filed date 5 May 1986
- Country of Publication:
- United States
- Language:
- English
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