Gm Global Technolgoy Operations, Inc.

James H Wolgemuth

Joseph Madak

Jack A Hart

A heatsink or cold plate is provided with which power electronic components mounted to a surface of the cold plate can be cooled with a cooling fluid flowing through the cold plate. The cold plate generally consists of a relatively planar structure through which one or more passages are formed for directing the cooling fluid through the cold plate. The passages direct the cooling fluid to recesses in the surface of the cold plate which are enclosed by the power electronic components. As such, cooling of the power electronic components is achieved by directly impinging the cooling fluid at their lower surfaces, preferably at an acute angle, such that enhanced heat transfer characteristics result.

Device for cooling power electronics

A rotary combustion engine having a planetary rotor and side intake ports is provided with an apex seal arrangement comprising two side-by-side seal members providing spaced sealing lines of contact at each rotor apex and wherein communicating grooves in the ends of the two apex seal members and existing corner seals connect the space between the apex seal members to the existing spaces between the side seals and oil seals on the rotor sides which periodically communicate with the side intake ports.

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Rochester Hills, MI, United States of America

James H Wolgemuth