Internal combustion engine for portable power generating equipme

Details Internal combustion engine for portable power generating equipme Internal combustion engine for portable power generating equipme

1994-06-03

1996-03-12

Argenbright, Tony M.

Internal-combustion engines

Poppet valve operating mechanism

Rod

74567, F01L 1047, F16H 5300

Patent

active

054977355

ABSTRACT:
An internal combustion engine for portable power generating equipment includes a camshaft assembly having an integral oil pump at one end thereof. The camshaft, which is preferably formed of two dissimilar materials, is mounted for axial movement in response to increased oil pressure so as to provide automatic oil pressure regulation. Structure is provided for reducing engine compression at low speeds to reduce cranking resistance during starting. Speed control is provided by a stepper motor coupled through a cam to the engine throttle. The cam is shaped so as to counteract the non-linear relationship between throttle position and engine power and speed so as to provide a desired relationship between the position of the stepper motor and the engine power and speed.

REFERENCES:
patent: 5065720 (1991-11-01), Nishiyama et al.
patent: 5136780 (1992-08-01), Hishida
"Camshafts Made from Non-metallic Materials for Small Engines" by Robert K. Mitchell, SAE Paper No. 861243, Sep. 1986.

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