Valve drive with a hydraulic transmission and a characteristic v

Details Valve drive with a hydraulic transmission and a characteristic v Valve drive with a hydraulic transmission and a characteristic v

1988-02-10

1989-04-18

Myhre, Charles J.

Internal-combustion engines

Poppet valve operating mechanism

Hydraulic system

123 9015, F01L 902

Patent

active

048216895

ABSTRACT:
A valve drive assembly for an internal combustion engine includes a given number of pistons, the given number of inlet or outlet valves each being connected to a piston and independently movable by hydraulic fluid acting upon the pistons, at least one rotatable link disposed in a housing for aiding in shutting off and releasing a supply of hydraulic fluid to the pistons at regular intervals, and an auxiliary shaft supported in the rotatable link and driven by a crankshaft. First and second supply lines for hydraulic fluid lead from a hydraulic pump to first and second annular grooves formed in the housing. The rotatable link has the given number of radial third and fourth conduits formed therein communicating with the first and second annular grooves. The auxiliary shaft has fifth and sixth annular grooves formed therein communicating with the third and fourth conduits. Fifth and sixth conduits communicate with the fifth and sixth annular grooves. Seventh and eighth conduits communicate with the fifth and sixth conduits. Third and fourth annular grooves lead from the seventh and eighth conduits to first and second conduits which lead to the pistons. Ribs divide the fifth and sixth annular grooves into the given number of sectors.

REFERENCES:
patent: 2692588 (1954-10-01), Cathers
patent: 2827884 (1958-03-01), Stivender
patent: 3727595 (1973-04-01), Links
patent: 4476823 (1984-10-01), Williams

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