F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/127, 103/2
F02M 39/00 (2006.01) F02M 41/14 (2006.01)
Patent
CA 1181991
ABSTRACT OF THE DISCLOSURE A fuel injection pump is provided with an improved spill control mechanism to accurately supply a desired fuel charge to an internal combustion engine. The fuel pump includes a rotor having a charge pump for pressurizing measured charges of fuel for delivery to the engine and a cam ring adapted to rotatably receive the rotor and to actuate the charge pump upon rotation of the rotor. The cam ring is angularly adjustable to control the timing of the pressurized fuel delivery to the engine. A spill collar mounted adjacent to the cam ring and adapted to rotatably receive the rotor includes a spill port for diverting fuel flow from the charge pump upon registration of a spill passage in the rotor with the spill port in the collar. A pivotal crank mounted on the cam ring and engageable with the spill collar is provided for adjusting the angular position of the spill collar relative to the cam ring to control the amount of fuel diverted from the charge pump. The fuel pump preferably includes a governor mechanism operable upon rotation of the rotor and operatively connected to the crank for automatically adjusting the angular position of the spill collar to maintain a desired engine speed.
399325
Marks & Clerk
Stanadyne Inc.
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