Mechanical compression release system

Details Mechanical compression release system Mechanical compression release system

1989-07-12

1990-12-18

Dolinar, Andrew M.

Internal-combustion engines

Starting device

Compression relieving type

F01L 1308

Patent

active

049778684

ABSTRACT:
A compression release mechanism for an internal combustion engine wherein a rotatable pin positioned axially parallel to the camshaft is rotatably received in the camshaft lobes, and has an auxiliary cam surface mounted at an axial end thereof. The auxiliary cam surface is adapted to extend above the outboard camshaft lobe to engage one of the valve lifters to thereby activate a compression release valve when the rotatable pin is rotated to a first position in response to low engine speed. The pin is rotated to a second position in response to high engine speed whereby the auxiliary cam surface is adapted so as not to engage the valve lifter. The pin is rotated by means of a centrifugally activated flyweight in response to engine speed.

REFERENCES:
patent: 3362390 (1968-01-01), Esty
patent: 3381676 (1968-05-01), Campen
patent: 3395689 (1968-08-01), Kruse
patent: 3496922 (1970-02-01), Campen
patent: 3897768 (1975-08-01), Thiel
patent: 3901199 (1975-08-01), Smith
patent: 3981289 (1976-09-01), Harkness
patent: 4453507 (1984-06-01), Braun et al.
patent: 4610227 (1986-09-01), Nakano et al.
patent: 4672930 (1987-06-01), Sumi
patent: 4696266 (1987-09-01), Harada

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