Inventor · disambiguated record
Jeffrey M. Pfeiffer
Also filed as: PFEIFFER JEFFREY M
16 granted patents·1 pending application·152 citations·filing 2000–2011
93Inventor score
Top patents by PatentIndex Score
17 records- 0185US8682564B2Camshaft position sensing in engines with electric variable cam phasersGAUTHIER DANIEL G·Filed 2011·Granted Mar 25, 2014·9 cites·7 claims
- 0284US6758177B1Method and apparatus to control a variable valve systemDELPHI TECH INC·Filed 2003·Granted Jul 6, 2004·22 cites·13 claims
- 0383US6758179B1Method and apparatus for controlling a variable valve system for an internal combustion engineDELPHI TECH INC·Filed 2003·Granted Jul 6, 2004·21 cites·11 claims
- 0482US6393903B1Volumetric efficiency compensation for dual independent continuously variable cam phasingDELPHI TECH INC·Filed 2000·Granted May 28, 2002·20 cites·7 claims
- 0577US6915767B2Method of determining the position of a cam phaserDELPHI TECH INC·Filed 2003·Granted Jul 12, 2005·20 cites·8 claims
- 0674US7350487B1Method for reducing phaser rotational instability in an internal combustion engineDELPHI TECH INC·Filed 2007·Granted Apr 1, 2008·5 cites·5 claims
- 0773US6718921B2Method and apparatus for cleaning an oil control valve for an internal combustion engineDELPHI TECH INC·Filed 2002·Granted Apr 13, 2004·13 cites·25 claims
- 0871US6550451B1Method of estimating residual exhaust gas concentration in a variable cam phase engineDELPHI TECH INC·Filed 2002·Granted Apr 22, 2003·17 cites·5 claims
- 0968US7571047B2Detection of valve deactivation failure by monitoring exhaust temperatureDELPHI TECH INC·Filed 2007·Granted Aug 4, 2009·5 cites·7 claims
- 1052US8145404B2Method for synchronizing an oil control valve as a virtual check valveGAUTHIER DANIEL G·Filed 2008·Granted Mar 27, 2012·1 cites·16 claims
- 1152US6732691B1Engine phaser control system using phaser instability measurementDELPHI TECH INC·Filed 2003·Granted May 11, 2004·5 cites·9 claims
- 1252US6561015B1Model-based method of estimating crankcase oil pressure in an internal combustion engineDELPHI TECH INC·Filed 2002·Granted May 13, 2003·6 cites·5 claims
- 1347US8457862B2Method for controlling and diagnosing a vane-type cam phaser having intermediate position pin lockingPFEIFFER JEFFREY M·Filed 2008·Granted Jun 4, 2013·1 cites·7 claims
- 1447US6681172B2Model-based method of estimating crankcase oil temperature in an internal combustion engineDELPHI TECH INC·Filed 2002·Granted Jan 20, 2004·5 cites·10 claims
- 1545US8650011B2Method for determining an engine response characteristicMUELLER MARTIN·Filed 2010·Granted Feb 11, 2014·0 cites·6 claims
- 1637US6748910B2Method of bounding cam phase adjustment in an internal combustion engineDELPHI TECH INC·Filed 2002·Granted Jun 15, 2004·2 cites·5 claims
- 1725US2007185640A1Adaptive control of a cam phase adjustment mechanismPFEIFFER JEFFREY M·Filed 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →