Valve timing control system to adjust phase relationship between

Details Valve timing control system to adjust phase relationship between Valve timing control system to adjust phase relationship between

1991-01-29

1992-02-18

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9031, 464 2, F01L 134

Patent

active

050884565

ABSTRACT:
A valve timing control system has a cylindrical gear member disposed between a rotary element rotating in synchronism with engine revolution and a rotary element rotating in synchronism with a camshaft. An intermediate gear means is provided between the rotary elements for adjusting rotational phase relationship to each other. The intermediate gear means is responsive to a fluid pressure in a pressure chamber for causing axial shifting to vary phase relationship between the rotary elements according to the axial position thereof. The pressure chamber is connected to a fluid pressure source via a fluid circuit in which is provided means for controlling fluid pressure to be supplied to the pressure chamber.

REFERENCES:
patent: 4494496 (1985-01-01), Nakamura et al.
patent: 4601266 (1986-07-01), Oldfield et al.
patent: 4708101 (1987-11-01), Hara et al.
patent: 4811698 (1989-03-01), Akasaka et al.
patent: 4856465 (1989-08-01), Denz et al.
patent: 4889086 (1989-12-01), Scapecchi et al.

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