Toyota Motor Engineering & Manufacturing North America, Inc.

Naveen Rajan

Tenghua Shieh

Teng-Hua Shieh

Manoj Sampath

Shohei Nomura

Wei Liu Liu

A head cover assembly for covering a crankcase of an internal combustion engine includes a head cover, a removable cover, a guide, and an integral oil separator. The oil separator includes a labyrinth that defines a flow path that separates oil from crankcase gases passing therethrough. The guide includes a tubular body presenting a passage for which manifold vacuum may draw crankcase gas from the oil separator. The cover includes an aperture. The tubular body is disposed through the aperture such that the outer tube surface is spaced apart from the inner edge of the aperture to define a gap in which separated oil may drain back into the engine for recycling.

Engine head cover assembly having an integrated oil separator and a removable cover

Embodiments of an exhaust gas recirculation (EGR) mixing device include an air inlet port and an outlet port disposed at opposite ends of the mixing pipe, an exhaust feeder having a scroll mixing chamber and occupying a portion of the mixing pipe between the air inlet port and the outlet port. The exhaust feeder includes an exhaust feed splitter beam disposed within an open-ended exhaust inlet tube and the scroll mixing chamber, and can be configured to split an exhaust stream into a plurality of exhaust streams before entering the scroll mixing chamber.

Exhaust gas recirculation devices

Embodiments of an exhaust gas recirculation (EGR) device comprise a mixing pipe having an air inlet port and an outlet port disposed at opposite ends of the mixing pipe, and an exhaust inlet port disposed at a region of the mixing pipe between the air inlet port and the outlet port, wherein the exhaust inlet port is configured to deliver exhaust to be mixed with air inside the mixing pipe. The exhaust gas recirculation (EGR) device further comprises a nozzle disposed internally within a region of the mixing pipe between the exhaust inlet ring and the outlet port such that the diffuser nozzle defines an outer mixing channel in the spacing between the diffuser nozzle and the mixing pipe region.

Exhaust gas recirculator devices

An oil separator separates oil from crankcase gases of an internal combustion engine. The oil drainage device includes an inlet, an outlet and a plurality of stages arranged in a stack between the inlet and the outlet. Each stage includes a generally upright side wall having opposite top and bottom faces. An end wall is disposed at the bottom face of the side wall. The end wall has opposite upper and lower surfaces. The end wall has a bore extending through the upper and lower surfaces for receiving a flow of crankcase gases therethrough. A plate diverts the flow of crankcase gases exiting the bore for creating a pressure increase that separates oil from the crankcase gases. A tube extends through the bore for directing the flow of crankcase gases therethrough. The tube being spaced apart from an inner surface of the bore allowing oil to flow therethrough in an opposite direction relative to the crankcase gases.

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Ann Arbor, MI, United States of America

Naveen Rajan