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公开(公告)号：US11143292B2
公开(公告)日：2021-10-12
申请号：US15995771
申请日：2018-06-01
IPC分类号： F16H61/00 , F16H61/02 , F16H59/72 , F16H61/462
摘要： A method for operating a hydraulic system for an automatic transmission includes determining a defined primary pressure value (p_PE) to be adjusted based on a measurement of an input current (I_22) of an electric motor and also includes adjusting a secondary flow rate (Q_SZ) to be adjusted based on calculation and adjustment of a target speed (n_Z) of the electric motor.
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公开(公告)号：US20190011045A1
公开(公告)日：2019-01-10
申请号：US16027796
申请日：2018-07-05
摘要： A method for detecting an oil leakage of a main pump during a stopping process of an internal combustion engine, where the oil leakage is caused by a reversal of a direction of rotation of a crankshaft of a vehicle including an electric auxiliary pump and the main pump, where the main pump is driven by the internal combustion engine of the vehicle. The method includes determining whether a rotational speed of the electric auxiliary pump exceeds a predefined threshold value, and when the rotational speed of the electric auxiliary pump exceeds the predefined threshold value for the rotational speed, detecting that the main pump is leaking, recording an error in an error memory of the vehicle, and demanding an engine start.
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公开(公告)号：US10774927B2
公开(公告)日：2020-09-15
申请号：US16027796
申请日：2018-07-05
摘要： A method for detecting an oil leakage of a main pump during a stopping process of an internal combustion engine, where the oil leakage is caused by a reversal of a direction of rotation of a crankshaft of a vehicle including an electric auxiliary pump and the main pump, where the main pump is driven by the internal combustion engine of the vehicle. The method includes determining whether a rotational speed of the electric auxiliary pump exceeds a predefined threshold value, and when the rotational speed of the electric auxiliary pump exceeds the predefined threshold value for the rotational speed, detecting that the main pump is leaking, recording an error in an error memory of the vehicle, and demanding an engine start.
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公开(公告)号：US20180355968A1
公开(公告)日：2018-12-13
申请号：US15995771
申请日：2018-06-01
IPC分类号： F16H61/00 , F16H61/462 , F16H59/72
CPC分类号： F16H61/0031 , F15B2211/20515 , F15B2211/50536 , F15B2211/526 , F16H59/72 , F16H61/462 , F16H2061/0068 , F16H2312/14
摘要： A method for operating a hydraulic system for an automatic transmission includes determining a defined primary pressure value (p_PE) to be adjusted based on a measurement of an input current (I_22) of an electric motor and also includes adjusting a secondary flow rate (Q_SZ) to be adjusted based on calculation and adjustment of a target speed (n_Z) of the electric motor.
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