Invention Grant
- 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
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Application No.: US12988435Application Date: 2009-03-07
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Publication No.: US08647236B2Publication 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

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.
Public/Granted literature
- US20110105275A1 Method for Sound Modeling for Downshifting with Intermediate Gas Public/Granted day:2011-05-05
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