| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a transmission hydraulic circuit capable of securing a sufficient supply quantity of lubricating oil at a time of switching the engaged state of a frictional engagement device while preventing an increase in the friction resistance of the frictional engagement device due to the lubricating oil at normal time, and effectively preventing occurrence of faults such as burning to the frictional engagement device, in a simple constitution.SOLUTION: When R-D operation is carried out upon driver's operating a shift lever 200, a manual valve 100 communicates an original pressure supply oil passage 95 with a forward clutch hydraulic oil passage 101 and communicates a reverse brake hydraulic oil passage 102 with a forward clutch lubricating oil passage 105. When D-R operation is carried out, the manual valve 100 communicates the original pressure supply oil passage 95 with the reverse brake hydraulic oil passage 102 and communicates the forward clutch hydraulic oil passage 101 with a reverse brake lubricating oil passage 106.</p> |
