HYDRODYNAMISCHER RETARDER
The invention relates to a hydrodynamic retarder (9) for a motor vehicle. Said retarder (9) comprises a rotor and a stator and defines a shared oil system (23) with a transmission, said system consisting of an oil reservoir (12) and an oil sump (15) of the transmission and has an overflow edge (16)....
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| Main Authors | , , , |
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| Format | Patent |
| Language | German |
| Published |
15.12.2010
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| Online Access | Get full text |
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| Summary: | The invention relates to a hydrodynamic retarder (9) for a motor vehicle. Said retarder (9) comprises a rotor and a stator and defines a shared oil system (23) with a transmission, said system consisting of an oil reservoir (12) and an oil sump (15) of the transmission and has an overflow edge (16). A control and regulating unit (17) is connected to valves (8, 8a, 8b, 8c, 11) and sensors (20, 21, 22). A hydraulic circuit (5) has a pump (1), a heat exchanger (2) and a valve (4) for controlling the retarder (9), a volume flow of the pump (1) being adjustable independently of the vehicle speed or the number of revolutions of the cardan shaft or the retarder. The pump (1) ensures the circulation of oil. The oil reservoir (12) can be connected to a suction channel (13) of the pump (1) via a charge valve (10). A volume flow in a return line (24) to the oil system (23) can be controlled or regulated by means of a valve (8, 8a, 8b). During a brake-free phase of the retarder (9), it is possible to choose between a temperature control of the transmission and a temperature control of the retarder or a temperature control of the oil system (23) can be switched off. |
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| Bibliography: | Application Number: AT20070729949T |