Hydraulically operating actuating device for a lift valve

Details Hydraulically operating actuating device for a lift valve Hydraulically operating actuating device for a lift valve

1989-09-27

1990-06-05

Myhre, Charles J.

Internal-combustion engines

Poppet valve operating mechanism

Hydraulic system

92131, 251 31, 91420, F01L 902

Patent

active

049304640

ABSTRACT:
A hydraulically operating actuating device for a lift valve, in particular in an internal combustion engine, has a piston which is connected to the valve stem. The piston is positioned in a cylinder and separates two stroke spaces which are connectable, in each case via inlet and outlet openings which can be occluded by the piston, to a pump for the working fluid or a reservoir. In order to reduce the energy requirement of the actuating device, the two inlet openings, which in a central actuation range of the piston are open, are connected to one another directly by a line, and two springs which act in opposite directions and, in equilibrium, hold the piston in a central position relative to two end positions engage on the piston or valve stem.

REFERENCES:
patent: 3068898 (1962-12-01), Meddock
patent: 3209737 (1965-10-01), Omotehara et al.
patent: 3361121 (1968-01-01), Schott
patent: 3844528 (1974-10-01), Massie
patent: 3872844 (1975-01-01), Gates
patent: 4014509 (1977-03-01), Yoshino et al.
patent: 4200067 (1980-04-01), Trenne
patent: 4287812 (1981-09-01), Iizumi
patent: 4361075 (1982-11-01), Block
patent: 4544986 (1985-10-01), Buchl
patent: 4572114 (1986-02-01), Sickler
patent: 4589627 (1986-05-01), Grotloh
patent: 4829947 (1989-05-01), Lequesne
patent: 4841923 (1989-06-01), Buchl

Affiliated with

Also associated with

Rating

Hydraulically operating actuating device for a lift valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulically operating actuating device for a lift valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulically operating actuating device for a lift valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-485159