| 发明名称 | Change of mind shift control | ||
| 摘要 | A method of controlling shifts in a multi-speed transmission includes beginning an initial shift, which changes the transmission from a starting gear to an initial target gear, and executing an adjusted shift, which changes the transmission to an adjusted target gear having higher speed ratio than the initial target gear, when transition conditions are satisfied. The transition conditions include a threshold increase in torque request, which is sufficient to require the transmission to be placed into the adjusted target gear. The transition conditions also include a common controlling clutch, which is partially engaged during the initial shift and the adjusted shift and is an off-going clutch to place the transmission in the adjusted target gear. Executing the adjusted shift does not include placing the transmission in a neutral mode. Furthermore, executing the adjusted shift does not include completing the initial shift. | ||
| 申请公布号 | US9316309(B2) | 申请公布日期 | 2016.04.19 |
| 申请号 | US201414570426 | 申请日期 | 2014.12.15 |
| 申请人 | GM Global Technology Operations LLC | 发明人 | Atmaram Harinath;Mayhew William R. |
| 分类号 | F16H61/06;F16H59/14;F16H61/04;F16H61/02;F16H61/68 | 主分类号 | F16H61/06 |
| 代理机构 | Quinn Law Group, PLLC | 代理人 | Quinn Law Group, PLLC |
| 主权项 | 1. A method of controlling shifts in a multi-speed transmission, comprising: beginning an initial shift, wherein the initial shift changes the transmission from a starting gear to an initial target gear; executing an adjusted shift when transition conditions are satisfied, wherein the adjusted shift changes the transmission to an adjusted target gear which has a higher speed ratio than the initial target gear, and wherein the transition conditions include: a threshold increase from a first torque request during the beginning of the initial shift to a second torque request after beginning the initial shift, wherein the threshold increase is sufficient to require the transmission to be placed into the adjusted target gear, anda common controlling clutch, wherein the common controlling clutch is partially engaged during the initial shift and the adjusted shift and is an off-going clutch to place the transmission in the adjusted target gear; wherein executing the adjusted shift does not include placing the transmission in a neutral mode; and wherein executing the adjusted shift does not include completing the initial shift, such that the transmission is not placed into the initial target gear. | ||
| 地址 | Detroit MI US | ||