Inventor
RAMAPPAN VIJAY A
US10 patents
Patents
10 patentsUS10352223B2Jul 16, 2019
Method for cold start emissions diagnostic
GM GLOBAL TECH OPERATIONS LLC11 citations81
US10669922B2Jun 2, 2020
System and method for adjusting the rate of coolant flow through an engine based on coolant pressure
GM GLOBAL TECH OPERATIONS LLC4 citations72
US10605151B2Mar 31, 2020
Electric pump operating strategy
GM GLOBAL TECH OPERATIONS LLC2 citations72
US11913401B1Feb 27, 2024
Engine emission control systems for deceleration fuel cutoff events and cold starts
GM GLOBAL TECH OPERATIONS LLC2 citations68
US11118491B1Sep 14, 2021
Gasoline particulate filter regeneration systems and methods
GM GLOBAL TECH OPERATIONS LLC4 citations66
US11098666B1Aug 24, 2021
System and method for controlling amount of sulfur on three-way catalyst by limiting deceleration cylinder cut off
GM GLOBAL TECH OPERATIONS LLC0 citations60
US11313291B2Apr 26, 2022
Secondary throttle control systems and methods
GM GLOBAL TECH OPERATIONS LLC0 citations57
US11885250B1Jan 30, 2024
Vehicle systems and methods for aftertreatment preheating
GM GLOBAL TECH OPERATIONS LLC0 citations50
US10006335B2Jun 26, 2018
Coolant temperature correction systems and methods
GM GLOBAL TECH OPERATIONS LLC0 citations50
US11885253B1Jan 30, 2024
Control of engine enthalpy for catalytic converter light-off
GM GLOBAL TECH OPERATIONS LLC0 citations47