The disclosure provides a system and method for activating a secondary axle. A vehicle includes a primary axle powered by an actuator and a secondary axle powered by a motor. The secondary axle includes a differential, first and second halfshafs, first and second wheels, a first electric clutch selectively coupling the first wheel to the first halfshaft, and a second electric clutch selectively coupling the second wheel to the second halfshaft. A vehicle controller is programmed to: responsive to a request to activate the secondary axle and a first speed difference between the first and second wheels being less than a first threshold, engage the first and second clutches at a same time, and, in response to the request to activate the secondary axle and the first speed difference between the first and second wheels exceeding the first threshold, engage one of the clutches and then subsequently engage the other of the clutches once the one of the clutches is fully engaged.
本公开提供了“用于启动辅助车桥的系统和方法”。一种车辆包括由致动器提供动力的主车桥和由马达提供动力的辅助车桥。辅助车桥包括:差速器;第一半轴和第二半轴;第一车轮和第二车轮;选择性地将第一车轮联接到第一半轴的第一电动离合器;以及选择性地将第二车轮联接到第二半轴的第二电动离合器。车辆控制器被编程为:响应于启动辅助车桥的请求并且第一车轮与第二车轮之间的第一速度差小于第一阈值,同时接合第一离合器和第二离合器,并且响应于启动辅助车桥的请求并且第一车轮与第二车轮之间的第一速度差超过第一阈值,接合离合器中的一者,然后一旦离合器中的所述一者完全接合随后就接合离合器中的另一者。
SYSTEM AND METHOD FOR ACTIVATING A SECONDARY AXLE
用于启动辅助车桥的系统和方法
2021-05-28
Patent
Elektronische Ressource
Chinesisch
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
Europäisches Patentamt | 2020
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