Oil supply for a valve actuation device

Details Oil supply for a valve actuation device Oil supply for a valve actuation device

1995-03-17

1996-04-02

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Plural valve trains, single actuator

123 9035, 123 9034, F01L 144, F01L 112, F01M 910

Patent

active

055031218

ABSTRACT:
A device for the simultaneous actuation of two gas exchange valves (10) of an internal combustion engine by a camshaft (11) rotatably supported in a camshaft bearing (15,16), said device comprising a bridge (3) which, with the interposition of hydraulic valve clearance compensation elements (7), is in contact with valve shaft ends (9) of the gas exchange valves (10), and a guide rail (2) on which the bridge (3) is guided for longitudinal displacement by a linear bearing (5), said guide rail (2) comprising a first oil duct (18) which opens into the linear bearing (5) and a second oil duct (22) implemented in the bridge (3), which connects the valve clearance compensation elements (7) to the linear bearing (5), and the oil passes phase-wise from the first oil duct (18) into the second oil duct (22), characterized in that a third oil duct (21) branches from the first oil duct (18) and opens into the camshaft bearing (15,16).

REFERENCES:
patent: 2380051 (1945-07-01), Kettering
patent: 4537166 (1985-08-01), Kimura et al.
patent: 4805567 (1989-02-01), Heimburg
patent: 4924821 (1990-05-01), Teerman
patent: 5261361 (1993-11-01), Speil

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