发明授权
US08442732B1 Method and system for determining a driveline ratio for a powertrain having an auxiliary transmission
有权
用于确定具有辅助变速器的动力系的传动系比的方法和系统
- 专利标题： Method and system for determining a driveline ratio for a powertrain having an auxiliary transmission
- 专利标题（中）： 用于确定具有辅助变速器的动力系的传动系比的方法和系统
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申请号： US13283038申请日： 2011-10-27
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公开(公告)号： US08442732B1公开(公告)日： 2013-05-14
- 发明人: Jon A. Steeby
- 申请人： Jon A. Steeby
- 申请人地址： US OH Cleveland
- 专利权人： Eaton Corporation
- 当前专利权人： Eaton Corporation
- 当前专利权人地址： US OH Cleveland
- 代理机构： Brooks Kushman P.C.
- 主分类号： G06F19/00
- IPC分类号： G06F19/00
摘要：
A method for determining a driveline ratio for a powertrain having an auxiliary transmission is provided and includes identifying a transmission gear ratio, measuring a transmission output speed, and measuring an auxiliary transmission output speed. An auxiliary transmission gear ratio is identified by comparing the transmission output speed to the auxiliary transmission output speed when the powertrain is in motion. The auxiliary transmission gear ratio is identified from a switch when the powertrain is at rest. An auxiliary transmission module has an auxiliary transmission in communication with a controller. The controller is configured to identify an auxiliary transmission gear ratio, and limit an engine torque command to limit the auxiliary transmission output torque. The engine torque command is limited if the output torque exceeds a predetermined value and if the auxiliary transmission is in a reducing gear ratio.