Invention Grant
US08827860B2 Torque transmitting device control strategy for a nine speed transmission
有权
用于九速变速器的扭矩传动装置控制策略
- Patent Title: Torque transmitting device control strategy for a nine speed transmission
- Patent Title (中): 用于九速变速器的扭矩传动装置控制策略
-
Application No.: US13310272Application Date: 2011-12-02
-
Publication No.: US08827860B2Publication Date: 2014-09-09
- Inventor: Edward W. Mellet , Scott H. Wittkopp
- Applicant: Edward W. Mellet , Scott H. Wittkopp
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations, LLC
- Current Assignee: GM Global Technology Operations, LLC
- Current Assignee Address: US MI Detroit
- Main IPC: F16H3/62
- IPC: F16H3/62 ; F16H3/66 ; F16H61/00
Abstract:
A transmission includes an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. The transmission input member is connected to a dry launch clutch. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices are for example clutches and brakes. A hill hold control strategy is provided for locking the transmission without using the dry launch clutch by selectively engaging combinations of the clutches and brakes.
Public/Granted literature
- US20120178578A1 TORQUE TRANSMITTING DEVICE CONTROL STRATEGY FOR A NINE SPEED TRANSMISSION Public/Granted day:2012-07-12
Information query
