Adjustable timing mechanism for fuel injection system

Details Adjustable timing mechanism for fuel injection system Adjustable timing mechanism for fuel injection system

1977-12-27

1980-06-10

Myhre, Charles J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123139AQ, 123139AK, F02M 3900

Patent

active

042067340

ABSTRACT:
This disclosure deals with apparatus for adjusting the timing of injection in an internal combustion engine wherein the fuel system includes unit injectors. The injector for each combustion chamber of the engine is actuated to inject fuel by a cam-follower-linkage mechanism that operates in time relation with the movement of the pistons of the engine. Each such mechanism includes a cam which is rotated in synchronism with the pistons of the engine, a pivotable cam follower which rides on the cam, and a linkage which connects the follower with an injector. The injector includes a plunger which seats on a cup or nozzle to terminate injection. To adjust the timing of injection, the pivot point of the follower and the angular point of engagement of the follower with the cam are moved. The relation of the cam, the follower and the linkage are arranged such that the movement of the linkage does not materially change the effective travel of the plunger as the timing is changed within a broad range. Consequently, the compression load on the plunger and the injector nozzle remains substantially constant at the termination of injection regardless of changes of the timing.

REFERENCES:
patent: 2006977 (1935-07-01), Woolson
patent: 2026069 (1935-12-01), Schneider
patent: 2635590 (1953-04-01), Simon
patent: 2831433 (1958-04-01), Seifert et al.
patent: 3742925 (1973-07-01), Gordon, Jr. et al.

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