METHOD FOR OPERATING A DRIVE TRAIN OF A MOTOR VEHI

专利名称：METHOD FOR OPERATING A DRIVE TRAIN

OF A MOTOR VEHICLE

发明人：Axel BLOCHING申请号：US16222346申请日：20181217

公开号：US20190184963A1公开日：20190620

专利附图：

摘要：A method of operating a drive-train () of a motor vehicle, which has a driveaggregate (), a transmission () with a hydrodynamic torque converter (), an engine brakedevice () and a drive output (). The engine brake device () which is activated when the

drive-train () is operating in an overdrive mode, during a coasting process, before carryingout an overdrive downshift, when the turbine rotational speed (n_tu) of the torqueconverter () is lower than the engine idling rotational speed (n_mot_LL) of the driveaggregate (). The engine brake device () is deactivated at a point in time chosen such that,when the overdrive downshift is carried out, a load change in the drive-train () is avoided.

申请人：ZF Friedrichshafen AG

地址：Friedrichshafen DE

国籍：DE

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