发明授权
- 专利标题: Control system for automatic vehicle transmissions
- 专利标题(中): 自动车辆变速器控制系统
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申请号: US09382205申请日: 1999-08-23
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公开(公告)号: US06516261B2公开(公告)日: 2003-02-04
- 发明人: Tatsuyuki Ohashi , Norio Nakauchi , Kazuyuki Konno , Yoshiharu Saito , Kenji Hagiwara , Hideki Wakamatsu , Yukio Morita , Takamichi Shimada
- 申请人: Tatsuyuki Ohashi , Norio Nakauchi , Kazuyuki Konno , Yoshiharu Saito , Kenji Hagiwara , Hideki Wakamatsu , Yukio Morita , Takamichi Shimada
- 优先权: JP10-253249 19980824
- 主分类号: G06F1700
- IPC分类号: G06F1700
摘要:
A system for controlling an automatic transmission of a vehicle which determines a downgrade or upgrade parameter based on the vehicle acceleration and selects one from among a plurality of shift programs based on the determined grade parameter to determine a gear ratio based on the selected shift program. The system includes a navigation system which determines the instantaneous vehicle position and outputs road information including upgrade/downgrade condition of road including the determined instantaneous vehicle position. In the system, the grade parameter is corrected based on the navigation information and the grade parameter such that the one from among a plurality of shift programs is selected based on the corrected grade parameter, thereby enhancing drivability during downgrade running, without being affected even if the navigation information is temporarily invalid.
公开/授权文献
- US20010049573A1 CONTROL SYSTEM FOR AUTOMATIC VEHICLE TRANSMISSIONS 公开/授权日:2001-12-06