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公开(公告)号：US20180066748A1
公开(公告)日：2018-03-08
申请号：US15256989
申请日：2016-09-06
发明人： Guopeng HU , Zhengyu DAI , Yang XU , Weitian CHEN , Hong JIANG
IPC分类号： F16H61/02
CPC分类号： F16H61/0213 , F16H3/66 , F16H2059/446 , F16H2059/666 , F16H2200/0052 , F16H2200/201 , F16H2200/2043 , F16H2200/2066 , F16H2200/2082 , F16H2312/14
摘要： A vehicle includes an engine and driven wheels each having an associated friction brake. A brake pedal is operable to engage the friction brakes. The vehicle includes a transmission having an input shaft driveably connected to the engine, an output element driveably connected to the driven wheels, and a gear mechanism adapted to establish at least one torque flow path between the input shaft and the output element. The transmission further includes a shift element that interrupts the torque flow path when disengaged. A gear selector is disposed in the passenger cabin and includes at least one forward-drive position, a reverse position, and a neutral position. At least one vehicle controller is configured to, in response to the gear selector being in the forward-drive position, a speed of the vehicle being zero, the vehicle being within a first predefined distance of a stoplight, and the brake pedal being depressed, disengage the shift element to put the transmission in neutral idle.
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公开(公告)号：US20220223937A1
公开(公告)日：2022-07-14
申请号：US17146802
申请日：2021-01-12
发明人： Yang XU , Jiyao WANG , Silong LI , Joseph Sherman KIMMEL , Michael W. DEGNER
IPC分类号： H01M10/637 , H02P27/12 , H02P21/22 , H01M10/615 , H01M10/625 , H01M8/04007 , H01M8/04701 , H01M8/04858 , B60L58/27 , B60L50/60 , B60L50/70 , B60L58/34
摘要： A vehicle includes an electric machine, a battery, an inverter, and a controller. The controller switches the inverter at a switching frequency selected to generate an AC current to heat the battery, adjusts a d-axis current of the electric machine to increase a battery heating power, and adjusts a q-axis current of the electric machine according to the adjusted d-axis current.
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公开(公告)号：US20190210603A1
公开(公告)日：2019-07-11
申请号：US15864564
申请日：2018-01-08
发明人： Yang XU , Zhengyu DAI , Guopeng HU , Sathish ATLURI , David PETERSON , Qi WANG
IPC分类号： B60W30/18 , B60W10/02 , B60W10/184
摘要： A vehicle includes a transmission, friction brakes, and a controller. The transmission has a clutch that is configured to transfer torque from an input of the transmission to a drive wheel. The controller is programmed to, in response to application of the friction brakes resulting in a stationary position of the vehicle, disengage the clutch to establish a neutral condition of the transmission. The controller is also programmed to, in response to a command to launch the vehicle while the transmission is in the neutral condition, engage the clutch. The controller is further programmed to, in response to an estimated wheel torque exceeding a rollback threshold during the clutch engagement, release the friction brakes. The wheel torque is based on an estimated clutch torque which is based on a clutch pressure and a transmission input torque.
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公开(公告)号：US20240204712A1
公开(公告)日：2024-06-20
申请号：US18084682
申请日：2022-12-20
发明人： Matthew PENNE , Yang XU , Jonathan HAIR , Adeeb AHMED
摘要： A vehicle includes an electric machine including a rotor. The vehicle further includes a traction battery configured to supply electric power to the electric machine. The vehicle further includes a wheel mechanically coupled to the electric machine. The vehicle further includes one or more controllers programmed to, responsive to detecting a battery temperature below a threshold and the vehicle being parked, rotate the rotor to a preset position such that the wheel rotates.
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公开(公告)号：US20220379874A1
公开(公告)日：2022-12-01
申请号：US17330315
申请日：2021-05-25
发明人： Yang XU , Akshay BICHKAR , Zhengyu DAI , Hiral Jayantilal HARIA , Hong JIANG , Jason MEYER
摘要： A hybrid vehicle includes an electric motor and a combustion engine. A K0 clutch couples the combustion engine to a drivetrain of the vehicle. A control module of the vehicle calculates a torque to be applied by the motor to the K0 clutch when initiating engagement of the combustion engine to the drivetrain. The control module calculates two separate torque lead values by two separate methods and calculates the torque by combining the two torque lead values.
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公开(公告)号：US20170138470A1
公开(公告)日：2017-05-18
申请号：US14939421
申请日：2015-11-12
发明人： Hong JIANG , Zhengyu DAI , Weitian CHEN , Timothy L. SARGENT , Yang XU
IPC分类号： F16H61/662 , F16H59/54 , F16H59/44 , F16H59/18
CPC分类号： F16H61/662 , F16H59/18 , F16H59/22 , F16H59/44 , F16H59/54 , F16H61/66259 , F16H2059/366
摘要： A vehicle includes an engine with an associated engine-speed sensor, and wheels each having a respective wheel-speed sensor. The vehicle also includes a continuously variable transmission (CVT) coupled to the engine and configured to operate at variable input-to-output ratios. At least one controller is programmed to reduce the operating ratio of the CVT in response to the engine-speed sensor indicating the engine is operating at idle speed and the wheel-speed sensor indicating the velocity is approximately zero. This provides less noise, vibration and harshness in the vehicle due to the reduced ratio that is possible during conditions in which a vehicle launch in that reduced ratio may not be acceptable.
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公开(公告)号：US20240146227A1
公开(公告)日：2024-05-02
申请号：US17974713
申请日：2022-10-27
CPC分类号： H02P27/06 , B60L50/51 , B60L50/60 , B60L2210/40
摘要： An electrified vehicle includes a traction battery, an inverter coupled to the traction battery via positive and negative legs of a high voltage bus and operable to convert DC power from the traction battery to three-phase AC power, a capacitor connected across the positive and negative legs of the high voltage bus, an electric machine having three phases coupled to the inverter, and a controller programmed to control electric machine voltage toward zero at a first slew rate or control electric machine current to a target short circuit current at a second slew rate in response to an active short request signal and to control the inverter to actively short the three phases of the electric machine after either (a) a specified elapsed time, or (b) after the electric machine voltage is below a first threshold or the current is within a predetermined range of the target short circuit current.
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公开(公告)号：US20200232557A1
公开(公告)日：2020-07-23
申请号：US16250650
申请日：2019-01-17
发明人： Yang XU , Weitian CHEN , Stuart N. FORD , Zhengyu DAI , Qi WANG , Hong JIANG
摘要： A method of operating a vehicle includes, responsive to a command to launch the vehicle and while the vehicle is in a first gear, determining, at a controller, a feedforward component including a target engine torque and a target bypass clutch torque, and a feedback component that is based on an error between the target converter slip and a measured converter slip and between the target wheel torque and a measured wheel torque. The method further includes changing a commanded engine torque and a commanded bypass clutch torque based on the feedforward component and the feedback component.
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