| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a powertrain with improved fuel efficiency for a motor vehicle (hereinafter called automobile) having a permanently driven primary axle. <P>SOLUTION: The powertrain includes: a drive unit 12 for the generation of a drive torque; a first clutch 33 for the transfer of a variable portion of the drive torque to a secondary axle 30 of the automobile; a second clutch 46 for disabling a torque transfer section 36 of the powertrain arranged between the first clutch 33 and the second clutch 46 when the first clutch 33 is opened; and a control unit 34 for automatic control of the first clutch 33. The control unit 34 is connected to at least one sensor for the detection of a wheel slip at the primary axle 20 and is made, starting from a disabled state of the torque transfer section 36, to close the second clutch 46 in dependence on a detected wheel slip at the primary axle 20. <P>COPYRIGHT: (C)2010,JPO&INPIT |
