Valve drive for an internal combustion engine

Details Valve drive for an internal combustion engine Valve drive for an internal combustion engine

1993-11-01

1994-11-01

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9018, 123 906, 74567, 74568R, F01L 134, F01L 104, F02D 1302

Patent

active

053599705

ABSTRACT:
The valve drive of an internal combustion engine has sliding cams which are pretensioned and displaceable axially on a camshaft. The sliding cams are displaceable from a first position in which they act by a first elevation curve on intake valves into a second position in which they act by a second elevation curve on the intake valves. The sliding cams in the first position positively abut a stop of a transfer element connected between the intake valves and the sliding cams, so long as they travel with a segment in the vicinity of the stop. When the base circle of the sliding cams is reached, the sliding cams are displaced into the second position.

REFERENCES:
patent: 3986484 (1976-10-01), Dyer
patent: 4399784 (1983-08-01), Foley
patent: 4730588 (1988-03-01), Maeda
patent: 4794893 (1989-01-01), Masuda et al.
patent: 4870872 (1989-10-01), Parsons
patent: 4886022 (1989-12-01), Nakai
patent: 5129407 (1992-07-01), Phillips
patent: 5158049 (1992-10-01), Neumann

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