Engine with hydraulically variable cam timing

Details Engine with hydraulically variable cam timing Engine with hydraulically variable cam timing

1986-12-29

1988-08-09

Wolfe, Jr., Willis R.

Internal-combustion engines

Poppet valve operating mechanism

Camshaft drive means

123 9017, F01L 134

Patent

active

047620978

ABSTRACT:
An internal combustion engine, or the like, includes a camshaft drive providing hydraulically variable cam timing utilizing computer control of a hydraulic dump and fill coupling which varies the retardation of a spring driven member connected with the camshaft. The camshaft phase relation is read by the computer and adjusted in relation to engine speed according to a preprogrammed phase relationship.

REFERENCES:
patent: 2281883 (1942-05-01), Kosian
patent: 3262435 (1966-07-01), Cribbs
patent: 4091776 (1978-05-01), Clemens et al.
patent: 4177773 (1979-12-01), Cribbs
patent: 4545338 (1985-10-01), Allred
patent: 4627825 (1986-12-01), Bruss et al.

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