Low mass valve lifters

Details Low mass valve lifters Low mass valve lifters

1991-04-01

1991-12-10

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9055, 123 9051, 74569, F01L 114, F01L 124

Patent

active

050708279

ABSTRACT:
Low mass hydraulic and mechanical valve lifters are shown and described. The lifters are of oblong configuration for reduced mass, with straight or narrowed sides connecting longitudinally spaced ends having depending semi-cylindrical end walls that are received in similarly shaped end portions of lifter gallery openings to absorb all longitudinal and lateral side loads. The lifters are preferably made by investment casting of steel alloys. The investment casting permits the use of thin semi-cylindrical walls at each end of the valve lifters which also have internal reinforcing ribs extending on their undersides.

REFERENCES:
patent: 2019138 (1935-10-01), Kliesrath et al.
patent: 2207324 (1940-07-01), L'Orange
patent: 2863432 (1958-12-01), O'Brien
patent: 3234815 (1966-02-01), Line
patent: 3877446 (1975-04-01), Morgan
patent: 4367701 (1983-01-01), Buente
patent: 4448155 (1984-05-01), Hillebrand et al.
patent: 4637357 (1987-01-01), Ohmi
patent: 4699094 (1987-10-01), Stegeman
patent: 4745888 (1988-05-01), Kapp

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