Device and method for varying a compression ratio of an internal combustion engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 7, 2010
Grant Date -
Jan 31, 2008
app pub date -
Dec 21, 2003
filing date -
Dec 23, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a device for varying a compression ratio in an internal combustion engine comprising at least one cylinder (10) provided with a combustion chamber (20), a movable element provided with a piston (14) which is translationally displaceable by means of a connecting rod (16) connectable thereto by an axis (24) and to the crank pin (34) of a crankshaft (36). The piston moves between a top dead center and a lower dead center allowing a dead volume (40, 118) at the top dead center of the piston. The invention also comprises a rotatable towed cam (42) which makes possible varying the compression ratio and means (32, 78a, 78b) for controlling the cam displacement. According to the invention, the control means comprises a fluid actuator (76) provided with a sliding block (54) arranged in a receiver (56) which is formed in a support (58) and limits two fluid chambers (75a, 75b) connected to at least one closed circuit (77; 78a, 78b).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully