Volkswagenwerk Aktiengesellschaft

Egon Wundrak

Michael Willmann

Peter Hofbauer

Hermann Danckert

An internal combustion engine has an oil pan divided into two chambers that communicate with each other. The first chamber is at a distance above the bottom of the oil pan, which is also the bottom of the second chamber. Because the bottom of the oil pan is cooled by the slip stream the oil in the two chambers are at different temperatures. Suction lines lead from each chamber to a thermostat valve that connects them to a discharge line. The thermostat valve operates such that when the engine is cold the oil supplied to the discharge line is relatively hot oil from the first chamber and when the engine is hot the relatively cool oil from the second chamber is supplied via the valve.

Internal combustion engine for an automobile with a divided oil pan

An internal combustion engine has an engine block, an oil pan and a sound insulating capsule shrouding the engine block. The engine block and the oil pan have circumferential mounting faces oriented towards one another. A mounting arrangement includes a sound dampening intermediate layer situated between the mounting faces for a noise-dampened connection of the oil pan with the engine block and with a lower terminal zone of the capsule. The oil pan is held by the lower terminal zone of the capsule and the capsule is supported by a component other than the internal combustion engine. The intermediate layer is constituted by a gasket which has at least one fold to take up relative motions between the engine block and the oil pan during operation of the internal combustion engine.

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Wolfsburg, Germany

Egon Wundrak