FUEL INJECTION PUMP DEVICE

PURPOSE:To enhance the fuel injection characteristic with a simple constitution by making the ring-form cam being serviceable for driving opposed plungers and the spill ring of a spill mechanism displaceable according to the operating condition of an engine in an opposed plunger type fuel injection...

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Bibliographic Details
Main Author SHINGUU KENJI
Format Patent
LanguageEnglish
Published 23.10.1986
Subjects
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF
WEAPONS
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Summary:PURPOSE:To enhance the fuel injection characteristic with a simple constitution by making the ring-form cam being serviceable for driving opposed plungers and the spill ring of a spill mechanism displaceable according to the operating condition of an engine in an opposed plunger type fuel injection pump device. CONSTITUTION:A force feed pump 20 is constituted by arraying a ring-form cam 31 around a rotor shaft 3 in which a pair (or two pairs) of opposed plungers 30 are incorporated and making it cooperate with the inner circumferential cam surface 35 via a rotor 33 and a shoe 32. The position of turning angle of the cam 31 is made to be adjustable by means of a cam angular position adjusting mechanism 40 of cylinder/piston structure via a pin 47, thus enabling the adjustment of fuel injection rate. Further, the fuel injection characteristic is made adjustable by providing a spill mechanism 98 including a cylindrical spill ring 93 fitted on the small diameter end part 92 of the rotor shaft 3 and displacing the spill ring 93 in the axial direction by an actuator 96 so as to spill a part of fuel in a passage 17.
Bibliography:Application Number: JP19850078753