Tenghua T Shieh

7775198, Aug 17, 2010

Mar 4, 2008

12/041749

Tenghua Tom Shieh - Ann Arbor MI, US

Toyota Motor Engineering & Manufacturing North America, Inc. - Erlanger KY

F02M 25/06

123574, 123563

A valve assembly controls the flow of boosted gas and naturally aspirated gas between an air inlet leading into an intercooler and an oil separator disposed in a head cover in a turbocharged motor vehicle engine. The valve assembly includes a housing defining a first channel through which the natural aspirated gas can pass and a second channel through which the boosted gas can pass. The housing encloses both a check valve and a PCV valve in the second channel. The check valve controls the flow of gas between the first and second channels during normal and boosted engine operation, respectively.

7942122, May 17, 2011

Aug 14, 2008

12/191646

Tenghua Tom Shieh - Ann Arbor MI, US
Naveen Rajan - Peoria IL, US
Wei Liu - Canton MI, US

Toyota Motor Engineering & Manufacturing North America, Inc. - Erlanger KY

F01M 9/10
F02B 25/06

123 9038, 123572

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.

8047186, Nov 1, 2011

Nov 24, 2008

12/276497

Tenghua Tom Shieh - Ann Arbor MI, US
Shohei Nomura - Ann Arbor MI, US

Toyota Motor Engineering & Manufacturing North America, Inc. - Erlanger KY

F02B 25/06

123572

An oil separating device for separating micron and sub-micron particles of oil from crankcase gases is provided. The oil separating device includes a housing having a first chamber in communication with a second chamber, and a narrow wave-shaped passage disposed between the first chamber and the second chamber. The narrow wave-shaped passage is defined by a first inner wall having a first undulating surface opposite and spaced apart from a second inner wall having a second undulating surface mirroring the first undulating surface. The narrow wave-shaped passage is disposed downstream of the first chamber and above the oil drain so as to allow oil particles in crankcase gases passing from the inlet to the outlet to accumulate on the first and second inner walls and assist gravity in forcing the accumulated oil through the narrow wave-shaped passage into the oil drain.

8433495, Apr 30, 2013

Jan 4, 2011

12/984237

Tenghua Tom Shieh - Ann Arbor MI, US
Shohei Nomura - Ann Arbor MI, US
Kyle Thomas Bernier - Clarkston MI, US
Wei Liu - Canton MI, US

Toyota Motor Engineering & Manufacturing - Erlanger KY

F02D 41/00
G01M 15/04

701102, 123435, 123572

In one embodiment, a method for determining a blow-by gas species concentration may include calculating one-dimensional engine performance data with a one-dimensional engine performance model. The one-dimensional engine performance data may be based at least in part upon an engine operating condition. The one-dimensional engine performance data may be transformed, automatically with a processor executing a two-dimensional ring dynamics model, into piston ring motion data. The two-dimensional ring dynamics model simulates geometrical changes to a piston-ring pack flow path. The blow-by gas species concentration may be determined with a network model including the one-dimensional engine performance model and a two-dimensional ring pack model. The two-dimensional ring pack model simulates species concentration change in the piston-ring pack flow path. The blow-by gas species concentration may be determined using the engine operating condition and the piston ring motion data.

8496448, Jul 30, 2013

Mar 16, 2010

12/725220

Tenghua Tom Shieh - Ann Arbor MI, US
Kyle Thomas Bernier - Clarkston MI, US

Toyota Motor Engineering & Manufacturing North America, Inc. - Erlanger KY

F04B 39/02
F04B 39/06

417370, 417366

The present invention provides a pump assembly having an intake, an outtake, and a rotor rotatably mounted to a shaft. A propeller is fixedly mounted to the upstream portion of the rotor and is rotatable upon actuation of the rotor. A passageway is disposed on the rotor so as to provide a path for fluids to cool the shaft. The pump assembly includes chamber and a pipe. The chamber is disposed within the housing and is located downstream the intake and is in communication with the passageway. The pipe interconnects the chamber with the outtake. An impeller is fixedly mounted to the rotor opposite the propeller and draws air bubbles from the passageway into the chamber.

7992551, Aug 9, 2011

Nov 26, 2008

12/323546

Tenghua Tom Shieh - Ann Arbor MI, US

Toyota Motor Engineering & Manufacturing North America, Inc. - Erlanger KY

F01M 1/00

123572

An oil capturing device for capturing oil from crankcase gases. The oil capturing device includes a housing containing a central chamber and a rotor disposed in the central chamber. The rotor includes a shaft rotatable about an axis and a flange extending from the shaft towards the inner wall of the central chamber. The flange is in contact with the inner wall, and spirals along the shaft so as to define a gas passage interconnecting the inlet to the first port. The gas passage provides a passage for crankcase gases to flow from the inlet to the first port, and narrows as it proceeds from the inlet to the port so as to compress crankcase gases travelling from the inlet to the first port. The rotor may be operable by a motor, pulley connected to the engine, or a turbine driven by the engine's exhaust.

20090165755, Jul 2, 2009

Dec 26, 2007

11/964306

Tenghua Tom Shieh - Ann Arbor MI, US
Naveen Rajan - Ann Arbor MI, US
Manoj Sampath - Ypsilanti MI, US

F02M 25/07

12356817

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.

20090165756, Jul 2, 2009

Dec 26, 2007

11/964441

Tenghua Tom Shieh - Ann Arbor MI, US
Naveen Rajan - Ann Arbor MI, US
Manoj Sampath - Ypsilanti MI, US

F02M 25/07

12356817

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.