发明申请
US20140024496A1 Protection of an All-Wheel Clutch of a Motor Vehicle Having a Clutch-Controlled All-Wheel Drive During a Critical Power Braking Situation Including a Clutch Slip
有权
在包括离合器滑动的关键动力制动情况下,保护具有离合器控制的全轮驱动的机动车辆的全轮离合器
- 专利标题: Protection of an All-Wheel Clutch of a Motor Vehicle Having a Clutch-Controlled All-Wheel Drive During a Critical Power Braking Situation Including a Clutch Slip
- 专利标题(中): 在包括离合器滑动的关键动力制动情况下,保护具有离合器控制的全轮驱动的机动车辆的全轮离合器
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申请号: US14036149申请日: 2013-09-25
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公开(公告)号: US20140024496A1公开(公告)日: 2014-01-23
- 发明人: Christian GRAIN , Axel Wust
- 申请人: Bayerische Motoren Werke Aktiengesellschaft
- 申请人地址: DE Muenchen
- 专利权人: Bayerische Motoren Werke Aktiengesellschaft
- 当前专利权人: Bayerische Motoren Werke Aktiengesellschaft
- 当前专利权人地址: DE Muenchen
- 优先权: JP102011006166.5 20110325
- 主分类号: B60W10/02
- IPC分类号: B60W10/02 ; B60W10/06 ; B60W10/184
摘要:
A method is provided for protecting an all-wheel drive clutch of a two-axle vehicle with clutch-controlled all-wheel drive. A power braking situation, where both the accelerator pedal and the brake are actuated and the vehicle is stationary or moves only slightly in the vehicle longitudinal direction, may be critical for the all-wheel drive clutch. For example, when the friction coefficient of the primary axle is very small and the wheel braking torque is less than the driving torque, a clutch slip may occur at the all-wheel drive clutch. Upon detecting a power braking situation, a protective measure is implemented against thermal overload of the all-wheel drive clutch, such as reducing or limiting the engine torque output, so that the clutch slip and the energy input into the all-wheel drive clutch are reduced.
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