Inventor

RAMAPPAN VIJAY

US48 patents

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

RAMAPPAN VIJAY

GM GLOBAL TECH OPERATIONS INC

Multi-injection combustion cycle systems for SIDI engines

Active combustion control based on ringing index for reducing homogenous charge compression ignition (HCCI) combustion noise

Control strategy for transitions between homogeneous-charge compression-ignition and spark-ignition combustion modes

Method and apparatus for monitoring an EGR valve in an internal combustion engine

HCCI combustion moding state control for fuel economy and seamless transitions

Engine cranking system with cylinder deactivation for a direct injection engine

Multiple injection blend for direct injected engines

Spark timing and control during transitions between spark ignited combustion and homogenous charge compression ignition

Systems and methods for exhaust gas recirculation control in homogeneous charge compression ignition engine systems

Control strategy for transitioning among combustion modes in an internal combustion engine

Late intake valve closing to improve cold startability for spark-ignition direct-injection (SIDI) engines

Multiple injection blend for direct injected engines

Exhaust gas recirculation control systems and methods

GM GLOBAL TECH OPERATIONS LLC

Generalized cold start emissions reduction strategy

System and method for controlling inlet coolant temperature of an internal combustion engine

Engine out coolant temperature correction

Coolant control systems and methods to prevent coolant boiling

Systems for regeneration of a gasoline particulate filter

Coolant pump control systems and methods for backpressure compensation

Electric coolant pump diagnostic systems and methods

System and method for diagnosing a fault in a partitioned coolant valve

External EGR rate feedback

System and method for engine block cooling

Cylinder imbalance correction system and method

Flexible engine metal warming system and method for an internal combustion engine

Engine off cooling strategy

RAMAPPAN VIJAY

System and method for controlling exhaust gas recirculation systems

HCCI mode switching control system and method

Systems and methods for controlling engine combustion stability

Systems and methods for heating intake air during cold HCCI operation

System and method for controlling transient switching between HCCI mode and SI mode of an engine

HCCI combustion moding state control for fuel economy and seamless transitions

System and method for improved transitions between engine combustion modes

Closed-loop adaptation of homogenous charge compression ignition operating zone based on ringing index

Exhaust gas recirculation control systems and methods

System and method for torque control in a homogeneous charge compression ignition engine

Control system and method for low quantity fuel injection

SHIBATA JONATHAN T

Diagnostic systems and methods for fuel injectors in homogenous charge compression ignition engine systems

System and method for controlling a catalyst temperature in an HCCI combustion engine

RAYL ALLEN B

HCCI mode switching control system and method

HCCI/SI combustion switching control system and method

SONG B JERRY

Selective exhaust gas recirculation diagnostic systems and methods

STORCH KEVIN J

Control systems for a variable capacity engine oil pump

STEWART ETSUKO MURAJI

Electric cam phaser control systems and methods

DELPHI TECH INC

Method to control auto-ignition in an internal combustion engine equipped with variable valve timing control

KANG JUN-MO

Method for controlling combustion mode transitions for an internal combustion engine

CINPINSKI KENNETH J

Camshaft phasor synchronization system for an engine

BURLEIGH DARRELL W

System and method for controlling intake valve timing in homogeneous charge compression ignition engines