Valve drive of an internal combustion engine

Details Valve drive of an internal combustion engine Valve drive of an internal combustion engine

2005-10-12

2009-11-17

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090120, C123S090440

Reexamination Certificate

active

07617806

ABSTRACT:
A valve drive (1) of an internal combustion engine which is used to actuate a gas exchange valve (6) is provided. Displacement of the valve takes place when a cam (9) is lifted and when a hydraulic force applying device (12) is lifted. A piston (13) of the force applying device can be displaced from a first end position (A) to a second end position by feeding a hydraulic medium, which can be pressure-adjusted, from a hydraulic medium line (24) into a pressure chamber (21). The pressure chamber (21) can be connected to the hydraulic medium line (24) via a shut-off element (20) which is open towards the pressure chamber (21) and which is arranged in the housing (15) and also by means of at least one passage (26) in the housing (15). The passage (26) is at least partially blocked by an external casing surface (16) of the piston (13) in the first end position (A) thereof.

REFERENCES:
patent: 2614547 (1952-10-01), Meinecke
patent: 4977867 (1990-12-01), Rhoads
patent: 5113811 (1992-05-01), Rembold et al.
patent: 5161500 (1992-11-01), Kubis et al.
patent: 7325522 (2008-02-01), Schmidt
patent: 4102537 (1992-07-01), None
patent: 4225012 (1993-07-01), None
patent: 4318293 (1993-12-01), None
patent: 4324837 (1995-01-01), None
patent: 10156309 (2002-07-01), None
patent: 63297710 (1988-12-01), None
patent: 07042519 (1995-02-01), None

Affiliated with

Also associated with

Rating

Valve drive of an internal combustion engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Valve drive of an internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve drive of an internal combustion engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4061675