Gm Global Technolgoy Operations, Inc.

Jason Melecosky

Ko-Jen Wu

Michael Kaczmar

Timothy L Neal

Kenneth M Eastman

Darrel J Walter

An automobile vehicle engine exhaust system with integrated exhaust gas recirculation portion includes a cylinder head having a first exhaust passage internal to the cylinder head. The first exhaust passage is split within the cylinder head into a dedicated exhaust passage opening out of the cylinder head via a dedicated exhaust port, and an exhaust gas recirculation (EGR) exhaust passage opening out of the cylinder head via an EGR exhaust port. A valve assembly is operated to open one of the dedicated exhaust port or the EGR exhaust port while closing the other one of the dedicated exhaust port or the EGR exhaust port.

Cylinder head with integrated exhaust manifold and dedicated exhaust gas recirculation port

An internal combustion engine includes an engine block defining a plurality of cylinders each receiving a piston. A crankcase extends from the engine block and supports a crankshaft drivingly connected to the pistons and including a chamber enclosed by a wall portion that defines a first blow-by flow passage and first and second drain passages therethrough. An oil sump mounted to the crankcase. A first oil separator is mounted to the wall of the crankcase in communication with the first blow-by flow passage and the first drain passage and defining a second blow-by flow passage therethrough and a third drain passage extending therethrough in communication with the second drain passage. A second oil separator mounted to the first oil separator in communication with the third drain passage and defining a third blow-by flow passage in communication with the second blow-by flow passage.

Integrated oil separator assembly for crankcase ventilation

A converter housing including a primary housing portion for housing a first converter brick, an intermediate housing portion, and a secondary housing portion for housing a second converter brick. The intermediate housing portion includes an inlet having a first axis and an outlet having a second axis that is angled with respect to the first axis. The first converter brick is disposed within the primary housing portion while the intermediate housing portion defines flow channels that communicate with a downstream end of the first converter brick along an outer surface of the primary housing portion and toward the outlet. The intermediate housing portion includes indented attachment surfaces which engage and hold the primary housing portion.

External exhaust guiding flow chambers for multiple catalyst architecture

An internal combustion engine defines a plurality of cylinders including full-time active cylinders and cylinders capable of being deactivated. A turbocharger having a twin scroll turbine includes a first turbine scroll in communication with the exhaust passages from the full-time active cylinders and a second turbine scroll in communication with the exhaust passages from the cylinders capable of being deactivated. A scroll control valve is provided in communication with the exhaust passages from the cylinders capable of being deactivated and being operable in an open position to allow exhaust gases from the cylinders capable of being deactivated to pass through the second turbine scroll, and being operable in a closed position to direct exhaust gases from the plurality of second cylinders capable of being deactivated to pass through the first turbine scroll.

Variable twin-scroll turbine for turbocharged internal combustion engine featuring cylinder deactivation

An engine assembly includes an engine block, a cylinder head coupled to the engine block and first and second lubrication systems. The first lubrication system includes a first pump in communication with the engine block and providing a first fluid to the engine block. The second lubrication system is isolated from the first lubrication system and includes a second pump in communication with the cylinder head and providing a second fluid to the cylinder head.

Growing community of inventors

Oxford, MI, United States of America

Jason Melecosky