Inventor

QUELHAS SERGIO

US18 patents

⚠️ This page may combine multiple inventors who share the name “QUELHAS SERGIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

QUELHAS SERGIO

GM GLOBAL TECH OPERATIONS LLC

System and method for adjusting coolant flow through a cooling system of a vehicle to increase a warming rate of a transmission

System and method for adjusting the rate of coolant flow through an engine based on coolant pressure

Electric pump operating strategy

System and method for reducing cold start emissions using an active exhaust throttle valve and an exhaust gas recirculation loop

Heating oil for enhanced active thermal coolant system

Method for diagnosing leaks downstream of the purge flow control orifice

Method and apparatus for control of propulsion system warmup based on engine wall temperature

Vehicle with gasoline particulate filter soot regeneration strategy with criteria emission reduction for low NOX emissions

Systems and methods for increasing temperature of an internal combustion engine during a cold start including low coolant flow rates during a startup period

Dual pump system and method for cooling an engine of a motor vehicle

Cold start control systems and methods

Vehicle thermal management system including mechanically driven pump, rotary valve(s), bypass line allowing engine outlet coolant to bypass heat exchanger(s), or combinations thereof

Air-to-air charge air cooler (A-CAC) for a vehicle

DELPHI TECH INC

Diagnostic system for monitoring catalyst performance

Diagnostic system for monitoring catalyst performance

Control method for a direct injection gas engine with fuel vapor purging

FAYYAD SALEM AHMAD

Crank signal error detection using a cam signal interval

FEDOR III WILLIAM J

Fuel pressure control system and method having a variable pull-in time interval based pressure