发明授权
- 专利标题: Hydraulic control device and method for automatic transmission
- 专利标题(中): 液压控制装置及自动变速箱方法
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申请号: US12470251申请日: 2009-05-21
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公开(公告)号: US08355848B2公开(公告)日: 2013-01-15
- 发明人: Hiromichi Akebono , Osamu Sato , Akio Nonomura
- 申请人: Hiromichi Akebono , Osamu Sato , Akio Nonomura
- 申请人地址: JP Fuji-shi
- 专利权人: Jatco Ltd
- 当前专利权人: Jatco Ltd
- 当前专利权人地址: JP Fuji-shi
- 代理机构: Foley & Lardner LLP
- 优先权: JP2008-148896 20080606
- 主分类号: G06F17/00
- IPC分类号: G06F17/00
摘要:
There is provided a hydraulic control device for controlling a hydraulic pressure supplied to a vehicle start-up engagement element in an automatic transmission when a shift lever is moved from a non-drive range position to a drive range position. The hydraulic control device has a target pressure setting section that sets, based on an input torque of the automatic transmission, a target value of hydraulic pressure supplied to the vehicle start-up engagement element at the completion of engagement of the vehicle start-up engagement element and corrects the target value periodically based on the transmission input torque until the completion of engagement of the vehicle start-up engagement element and a hydraulic pressure control section that controls the hydraulic pressure in such a manner that the hydraulic pressure supplied to the vehicle start-up engagement element reaches the corrected target value at the completion of engagement of the vehicle start-up engagement element.
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