Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Detection of valve deactivation failure by monitoring exhaust temperature

Detection of valve deactivation failure by monitoring exhaust temperature

US Patent 7571047 · Granted Aug 4, 2009

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Camshaft position sensing in engines with electric variable cam phasers2014
Method for determining an engine response characteristic2014
Method for controlling and diagnosing a vane-type cam phaser having intermediate2013
Method for synchronizing an oil control valve as a virtual check valve2012
Method for reducing phaser rotational instability in an internal combustion engi2008
Supplemental internal air cooling of an internal combustion engine2008
System for verifying cylinder deactivation status in a multi-cylinder engine2008
Method for effectively diagnosing the operational state of a variable valve lift2006
Method for diagnosing the operational state of a two-step variable valve lift de2006
Method and apparatus for monitoring a multiple step valve lifter2006
Method of determining the position of a cam phaser2005
Method and apparatus to control a variable valve system2004