Hydraulic adjusting device

Details Hydraulic adjusting device Hydraulic adjusting device

1993-10-01

1995-01-03

Look, Edward K.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9031, 464 2, 464160, F01L 134, F16D 310

Patent

active

053776380

ABSTRACT:
A hydraulic adjusting device for rotating a camshaft relative to its drive wheel which includes a coupling member, which cooperates with the drive wheel and with the camshaft via a pair of gear tooth systems, at least one of which is a helical gear. The coupling member is connected to an actuator, which is embodied as a single-acting cylinder. This singleacting cylinder is acted upon by pressure that is variable by a control valve. The restoration of the coupling member or of the actuator takes place only from the restoring moment upon the actuation of the valves of the engine by the camshaft.

REFERENCES:
patent: 4787345 (1988-11-01), Thoma
patent: 5111780 (1992-05-01), Hannibal
patent: 5113814 (1992-05-01), Suga et al.
patent: 5189999 (1993-03-01), Thoma
patent: 5263442 (1993-11-01), Hara

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