Invention Grant
- Patent Title: Hydraulic control device and method for automatic transmission
- Patent Title (中): 液压控制装置及自动变速箱方法
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Application No.: US12470251Application Date: 2009-05-21
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Publication No.: US08355848B2Publication Date: 2013-01-15
- Inventor: Hiromichi Akebono , Osamu Sato , Akio Nonomura
- Applicant: Hiromichi Akebono , Osamu Sato , Akio Nonomura
- Applicant Address: JP Fuji-shi
- Assignee: Jatco Ltd
- Current Assignee: Jatco Ltd
- Current Assignee Address: JP Fuji-shi
- Agency: Foley & Lardner LLP
- Priority: JP2008-148896 20080606
- Main IPC: G06F17/00
- IPC: G06F17/00

Abstract:
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.
Public/Granted literature
- US20090306868A1 HYDRAULIC CONTROL DEVICE AND METHOD FOR AUTOMATIC TRANSMISSION Public/Granted day:2009-12-10
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