Valve drive for charge-cycling valves of internal combustion engines
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 29, 2007
Grant Date -
Feb 9, 2006
app pub date -
Aug 5, 2005
filing date -
Aug 7, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A valve drive for charge-cycling valves of internal combustion engines, which are held in the closed position by means of spring force, and can optionally be activated by a main cam or additionally by a secondary cam of a camshaft, in which connection the main cam with its elevation curve and angle setting is adapted to the crankshaft of a charge-cycling process to be controlled, and the secondary cam operates separately from the main cam. The drive variably controls an additional opening procedure of a charge-cycling valve, separate from the charge-cycling stroke to be controlled directly, in order to sensitively regulate the exhaust gas feed-back in this manner. The drive has two engagement surfaces for introducing movements on a pivot lever mounted on the cylinder head, which activates at least one charge-cycling valve. The first engagement surface on the pivot lever engages the main cam and the second engagement surface on the pivot lever contacts a transfer device for variable adjustment of the valve lift, driven by the second cam.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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