Inventor
DARROW JON C
US6 patents
Patents
6 patentsUS7063057B1Jun 20, 2006
Method for effectively diagnosing the operational state of a variable valve lift device
DELPHI TECH INC78 citations96
US7314034B1Jan 1, 2008
System for verifying cylinder deactivation status in a multi-cylinder engine
DELPHI TECH INC32 citations92
US7047957B1May 23, 2006
Method and apparatus for monitoring a multiple step valve lifter
DELPHI TECH INC20 citations91
US7047924B1May 23, 2006
Method for diagnosing the operational state of a two-step variable valve lift device
DELPHI TECH INC45 citations91
US7325534B1Feb 5, 2008
Supplemental internal air cooling of an internal combustion engine
DELPHI TECH INC10 citations83
US7571047B2Aug 4, 2009
Detection of valve deactivation failure by monitoring exhaust temperature
DELPHI TECH INC5 citations61