Oil cooling circuit of an automatic transmission
AssigneeVoith Patent GmbH
InventorRainer Fähnle
Life of this patent
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Abstract
An oil supply system for an automatic transmission or for an automated manual transmission in a drive train. The oil supply system includes an oil sump and a heat exchanger, wherein the oil supply is provided for at least the following operating states of the automatic transmission: a converter mode; a drive mode in one of the mechanical gears; and a retarder mode. To optimize cooling of the oil volume flows in the different operating states two heat exchangers are provided, through which an oil volume flow can be conducted depending on the operating state of the transmission.
Claims8
An oil supply system for an automatic transmission or for an automated manual transmission in a drive train, the oil supply system comprising:
- an oil sump providing an oil supply;
- a plurality of heat exchangers including a first heat exchanger and a second heat exchanger, at least a portion of the oil supply flowing through the heat exchangers, the oil supply being used for at least the following operating states of the transmission:
- a converter mode;
- a drive mode in one of a plurality of mechanical gears;
- and
- a retarder mode;
- and
- wherein oil volume flows through the first and second heat exchangers is conducted depending on the operating state of the transmission;
- and
- a single temperature sensor configured for measuring an oil circuit temperature of the oil volume flows in all operating states.
Dependencies are inferred from the claim text.