发明申请
- 专利标题: Method for controlling gear ratio changes in an automatic transmission
- 专利标题(中): 控制自动变速器变速比变化的方法
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申请号: US12291642申请日: 2008-11-12
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公开(公告)号: US20100121543A1公开(公告)日: 2010-05-13
- 发明人: James W. Landes , Justin L. Steinlage , David E. Dickrell
- 申请人: James W. Landes , Justin L. Steinlage , David E. Dickrell
- 专利权人: Caterpillar Inc.
- 当前专利权人: Caterpillar Inc.
- 主分类号: G06F7/00
- IPC分类号: G06F7/00 ; B60W10/06 ; B60W10/10
摘要:
A method of controlling an automatic transmission of a machine includes a step of identifying an upcoming gear ratio change from a current gear ratio to a proposed gear ratio. An estimated power output value, based on the proposed gear ratio and a current engine speed, is determined. The estimated power output value is adjusted based on a derated operating condition. If the estimated power output value is greater than or equal to a current power output value, a gear evaluation identifier is set to a first value. If the estimated power output value is less than the current power output value, the gear evaluation identifier is set to a second value.