Inventor

HATTAR RAFAT F

US28 patents

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

HATTAR RAFAT F

GM GLOBAL TECH OPERATIONS LLC

Method and system for rationalizing a delta pressure sensor for a gasoline particulate filter in a vehicle propulsion system

Systems and methods for performing prognosis of fuel delivery

Dual injection during intake stroke for improved catalyst light off

Engine emission control systems for deceleration fuel cutoff events and cold starts

System and method for controlling a low pressure pump to prevent vaporization of fuel at an inlet of a high pressure pump

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

Systems and methods for recirculation of engine exhaust gas within an exhaust system having a buffer tank

Systems and methods for recirculation of engine exhaust gas within an exhaust system

Engine systems with exhaust air injection after three-way catalytic converters for non stoichiometric rich operation

Systems and methods for catalyst health diagnosing and fuel system control improvement

Active regeneration method for a gasoline particulate filter of an internal combustion engine

Gasoline particulate filter regeneration strategy

Cold start control systems and methods

Vehicle systems and methods for aftertreatment preheating

Method and system for fuel control in a vehicle propulsion system

Systems and methods for collection and analysis of vehicular data

Method for controlling a regeneration of a particle filter of an internal combustion engine

Method and system for evaluating a NOx sensor

Systems and methods of engine exhaust air injection before and after catalytic converters

Method and system for regenerating a gasoline particulate filter in a vehicle propulsion system

Intake manifold and cylinder airflow estimation systems and methods

GM GLOBAL TECH OPERATIONS INC

Method of controlling catalyst light-off of a hybrid vehicle

Engine startup control systems and methods

System and method for preventing stochastic pre-ignition

HATTAR RAFAT F

Pressure diagnostic system and method

Measured fuel rail pressure adjustment systems and methods

WHITNEY CHRISTOPHER E

Multi-pulse enable determination and transition control systems and methods

KWAPIS DEAN R

Fuel pump prime activated by door sensor