Invention Grant
US08647236B2 Method for sound modeling for downshifting with intermediate gas 有权
用于中间气体降档的声音建模方法

  • Patent Title: Method for sound modeling for downshifting with intermediate gas
  • Patent Title (中): 用于中间气体降档的声音建模方法
  • Application No.: US12988435
    Application Date: 2009-03-07
  • Publication No.: US08647236B2
    Publication Date: 2014-02-11
  • Inventor: Marko Koerner
  • Applicant: Marko Koerner
  • Applicant Address: DE Stuttgart
  • Assignee: Daimler AG
  • Current Assignee: Daimler AG
  • Current Assignee Address: DE Stuttgart
  • Agency: Crowell & Moring LLP
  • Priority: DE102008018969 20080416
  • International Application: PCT/EP2009/001646 WO 20090307
  • International Announcement: WO2009/127296 WO 20091022
  • Main IPC: B60W10/04
  • IPC: B60W10/04
Method for sound modeling for downshifting with intermediate gas
Abstract:
In a method for controlling shifting in a motor vehicle having an internal combustion engine and an automatic transmission, intermediate gas is automatically applied for reducing and/or compensating for an abrupt shift when downshifting. In a first phase, wherein the transmission is in the hydraulic down time thereof, the actual torque provided by the engine is slowly increased, until a torque required by the transmission is achieved. Subsequently, in a second phase, wherein the actual torque of the engine is less than the target torque, a throttle valve is opened further. In a subsequent third phase, in which the actual torque of the engine has achieved the target torque required for synchronization, a late ignition angle is set.
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