Inventor
MATTHEWS GREGORY P
US26 patents
⚠️ This page may combine multiple inventors who share the name “MATTHEWS GREGORY P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GEN MOTORS CORP
9 patentsUS5273019ADec 28, 1993
Apparatus with dynamic prediction of EGR in the intake manifold
GEN MOTORS CORP99 citations96
US5465617ANov 14, 1995
Internal combustion engine control
GEN MOTORS CORP91 citations95
US5423208AJun 13, 1995
Air dynamics state characterization
GEN MOTORS CORP62 citations95
US7000589B2Feb 21, 2006
Determining manifold pressure based on engine torque control
GEN MOTORS CORP19 citations92
US6874462B2Apr 5, 2005
Adaptable modification of cylinder deactivation threshold
GEN MOTORS CORP47 citations92
US5596972AJan 28, 1997
Integrated fueling control
GEN MOTORS CORP46 citations89
US7059998B2Jun 13, 2006
DOD control methods for manual transmissions
GEN MOTORS CORP11 citations83
US6968824B1Nov 29, 2005
Determining manifold pressure based on engine torque control
GEN MOTORS CORP11 citations74
US6895941B2May 24, 2005
Method and apparatus for a variable displacement internal combustion engine
GEN MOTORS CORP11 citations73
GM GLOBAL TECH OPERATIONS INC
8 patentsUS9222427B2Dec 29, 2015
Intake port pressure prediction for cylinder activation and deactivation control systems
GM GLOBAL TECH OPERATIONS INC21 citations92
US7464676B2Dec 16, 2008
Air dynamic steady state and transient detection method for cam phaser movement
GM GLOBAL TECH OPERATIONS INC29 citations92
US7319929B1Jan 15, 2008
Method for detecting steady-state and transient air flow conditions for cam-phased engines
GM GLOBAL TECH OPERATIONS INC36 citations92
US7292931B2Nov 6, 2007
Model-based inlet air dynamics state characterization
GM GLOBAL TECH OPERATIONS INC35 citations92
US7524255B2Apr 28, 2009
Tip-in bump reduction methods and systems
GM GLOBAL TECH OPERATIONS INC7 citations74
US9376973B2Jun 28, 2016
Volumetric efficiency determination systems and methods
GM GLOBAL TECH OPERATIONS INC4 citations73
US9249747B2Feb 2, 2016
Air mass determination for cylinder activation and deactivation control systems
GM GLOBAL TECH OPERATIONS INC3 citations73
US7953539B2May 31, 2011
Torque split strategy for a belt alternator starter (BAS) hybrid
GM GLOBAL TECH OPERATIONS INC3 citations63
GM GLOBAL TECH OPERATIONS LLC
7 patentsUS9458779B2Oct 4, 2016
Intake runner temperature determination systems and methods
GM GLOBAL TECH OPERATIONS LLC4 citations73
US9534550B2Jan 3, 2017
Air per cylinder determination systems and methods
GM GLOBAL TECH OPERATIONS LLC3 citations72
US10934960B2Mar 2, 2021
Method and system for estimating mass airflow using a mass airflow sensor
GM GLOBAL TECH OPERATIONS LLC2 citations67
US10337441B2Jul 2, 2019
Air per cylinder determination systems and methods
GM GLOBAL TECH OPERATIONS LLC1 citations62
US9494092B2Nov 15, 2016
System and method for predicting parameters associated with airflow through an engine
GM GLOBAL TECH OPERATIONS LLC1 citations48
US10655550B2May 19, 2020
Intake manifold and cylinder airflow estimation systems and methods
GM GLOBAL TECH OPERATIONS LLC0 citations41
US10480435B2Nov 19, 2019
EGR and reformate fraction estimation in a dedicated EGR engine
GM GLOBAL TECH OPERATIONS LLC0 citations39
MATTHEWS GREGORY P
2 patentsUS8527120B2Sep 3, 2013
Method and apparatus for controlling a powertrain system including an engine and electro-mechanical transmission
MATTHEWS GREGORY P9 citations81
US9151240B2Oct 6, 2015
Control system and method for a homogeneous charge compression ignition (HCCI) engine
MATTHEWS GREGORY P0 citations49