| 发明名称 | Motor torque control method in coasting state of hybrid electric vehicle | ||
| 摘要 | A method of controlling motor torque in coasting of a vehicle includes: acquiring information about a speed of an input shaft of a transmission detected by a detector while the vehicle is running, information about an acceleration of the input shaft of the transmission obtained from the speed of the input shaft of the transmission, and information about a state of an engine clutch; determining whether the vehicle is coasting based on the acquired information; calculating a motor torque instruction based on engine friction torque corresponding to the speed of the input shaft of the transmission, a rotary inertia of an engine, and the acceleration of the input shaft of the transmission, when the vehicle is determined to be coasting with the engine clutch disengaged; and controlling torque of a driving motor for driving the vehicle in accordance with the calculated motor torque instruction. | ||
| 申请公布号 | US9592820(B2) | 申请公布日期 | 2017.03.14 |
| 申请号 | US201414569671 | 申请日期 | 2014.12.13 |
| 申请人 | Hyundai Motor Company | 发明人 | Park Joonyoung |
| 分类号 | B60L9/00;B60L11/00;G05D1/00;G05D3/00;G06F7/00;G06F17/00;B60W20/00;B60K6/48;B60L11/14;B60L15/20 | 主分类号 | B60L9/00 |
| 代理机构 | Mintz Levin Cohn Ferris Glovsky and Popeo, P.C. | 代理人 | Mintz Levin Cohn Ferris Glovsky and Popeo, P.C. ;Corless Peter F. |
| 主权项 | 1. A method of controlling motor torque during coasting of a vehicle, the method comprising: acquiring, by a controller including a memory and a processor, information about a speed of an input shaft of a transmission detected by a detector while the vehicle is running, information about an acceleration of the input shaft of the transmission obtained from the speed of the input shaft of the transmission, and information about a state of an engine clutch; determining, by the controller, whether the vehicle is coasting based on the acquired information; calculating, by the controller, a motor torque instruction based on engine friction torque corresponding to the speed of the input shaft of the transmission, a rotary inertia of an engine, and the acceleration of the input shaft of the transmission, when the vehicle is determined to be coasting with the engine clutch disengaged; and controlling, by the controller, torque of a driving motor for driving the vehicle in accordance with the calculated motor torque instruction, wherein the motor torque instruction derives from an equation, as follows: motor torque instruction=engine friction torque−(rotary inertia of engine×acceleration of input shaft of transmission). | ||
| 地址 | Seoul KR | ||