Gm Global Technolgoy Operations, Inc.

Jeff Jocsak

Robert Lionel Jacques

John Byron Davis

Paul Nahra

Ramakrishna Tatavarthi

Haralabos Triantafyllidis

An oil pan includes a pan structure forming a primary reservoir, and defining a PCV passage, and a PCV reservoir. The PCV passage includes an inlet for receiving fluid from a PCV drain of an engine block, and an outlet disposed vertically below the inlet of the PCV passage for discharging the fluid received from the PCV drain. The PCV reservoir includes a lower end disposed adjacent the outlet of the PCV passage, and an upper end disposed vertically above the lower end of the PCV reservoir and in fluid communication with the primary reservoir. The PCV passage and the PCV reservoir define a fluid flow path forming a fluid trap at the intersection of the outlet of the PCV passage and the lower end of the PCV reservoir, to keep the outlet of the PCV passage submerged during dynamic operation of the engine.

Oil pan with dedicated drain for positive crankcase ventilation

An engine assembly includes a crankshaft having a first axis of rotation and a crankpin offset from the first axis of rotation. A second shaft is offset from the crankshaft and has a second axis of rotation. A piston is movable in a cylinder between a top dead center position and a bottom dead center position to drive the crankshaft. A connecting rod extends from the piston. A four-jointed linkage assembly pivotably connects the connecting rod, crankshaft, and second shaft. A drive system operatively connects the crankshaft and the second shaft to drive the second shaft via the crankshaft. A phasing mechanism connects the drive system and the second shaft and is controllable to vary the rotational position of the second shaft relative to the crankshaft.

Engine assembly with phasing mechanism on eccentric shaft for variable cycle engine

A powertrain assembly includes a hybrid propulsion system and an internal combustion engine. The hybrid propulsion system includes an electric motor at least partially powering propulsion of a vehicle during a first operating mode and an internal combustion engine at least partially powering propulsion of the vehicle during a second operating mode. The internal combustion engine includes an engine structure defining a combustion chamber and an intake port, an intake valve located in the intake port, and an intake valve lift mechanism supported on the engine structure and engaged with the intake valve. The intake valve lift mechanism is operable in a first lift mode and a second lift mode. The intake valve lift mechanism provides a first intake valve opening profile during the first lift mode and a second intake valve opening profile different than the first intake valve opening profile during the second lift mode.

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Lake Orion, MI, United States of America

Jeff Jocsak