发明申请
- 专利标题: APPARATUS AND METHOD FOR PREVENTING INCORRECT GEAR SHIFTS IN AUTOMATIC TRANSMISSIONS OF MOTOR VEHICLES
- 专利标题(中): 电动汽车自动变速器防止不规则齿轮换档的装置及方法
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申请号: US12847973申请日: 2010-07-30
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公开(公告)号: US20110010061A1公开(公告)日: 2011-01-13
- 发明人: Martin Seufert
- 申请人: Martin Seufert
- 申请人地址: DE Untergruppenbach
- 专利权人: GETRAG Getriebe-und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG
- 当前专利权人: GETRAG Getriebe-und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG
- 当前专利权人地址: DE Untergruppenbach
- 优先权: DEDE102008008065.9 20080201
- 主分类号: F16H59/14
- IPC分类号: F16H59/14 ; F16H61/10
摘要:
A method (42) for preventing incorrect gear shifts in automatic transmissions (14) of motor vehicles comprising the following steps: determining a current output torque (Mis) of a source gear (GSOURCE); generating a history of output torques by storing the current output torque in the source gear (GSOURCE) for a time interval having a predetermined duration; determining an absolute value of a minimal output torque (Mmin) and an absolute value of a maximum output torque (Mmax) from the history (60) of output torques, comparing the two values and determining the greater absolute value; determining (S3) an absolute value of a target torque (MTARGET) of a target gear (GTARGET), if an instruction for a gear change exists; comparing (S4) the absolute value of the target torque (MTARGET) with the greater absolute value; and shifting (S5) the transmission (14) from the source gear (GSOURCE) to the target gear (GTARGET), if the absolute value of the target torque (MTARGET) is less than or equal to the greater absolute value (FIG. 2).
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