Brunswick Corporation

Dr. Ing. H.c. F. Porsche Aktiengesellschaft

Klaus Fuoss

David J Belter

Erwin Rutschmann

Christopher J Taylor

Daniel J Balogh

Scott M Westpfahl

Marcel Hollmann

This invention relates to a test stand for simulation of the exhaust flow of an internal combustion engine, comprising

Test stand for simulation of the exhaust flow of an internal combustion engine

A cooling system for an outboard motor pumps water from a body of water through certain selected portions of the outboard motor and through a heat exchanger which, in turn, comprises a coolant conduit that is directed to conduct the coolant in thermal communication with various portions of the outboard motor. The engine block is cooled by a flow of the coolant and an engine head is cooled by a flow of water from the body of water. Other heat emitting devices are connected in thermal and fluid communication with the water and coolant conduits.

Cooling system for an outboard motor having both open and closed loop portions

A crankshaft is provided with a plurality of counterweights which are asymmetrically formed so that one surface has a shape which induces a flow of air and oil mist in a preselected and preferred direction. This shape also improves the aerodynamic characteristic of the counterweight and reduces the friction that the counterweight would otherwise experience as it rotates about the rotational axis of the crankshaft. A tapered surface is provided on a lower surface of each crankshaft and the tapered surface is positioned at a leading edge of each counterweight.

Crankshaft with airflow inducing surfaces

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Fond du Lac, WI, United States of America

Klaus Fuoss