Patent ID: 8348797
Filing Date: 2013-01-08
Classification: B60K,B60W,F16H,Y02T

Abstract:
1. A transmission comprising: first, second, third, and fourth clutches being engageable in response to fluid pressure; a main passage, a first passage, a second passage, and a third passage; a pump configured to supply fluid pressure to the main passage; a first valve linking the first clutch and the first passage, and configured to control fluid communication between the first clutch and the first passage; a second valve configured to control fluid communication between the second clutch and the second passage; a third valve configured to control fluid communication between the third clutch and the third passage; a fourth valve configured to control fluid communication between the fourth clutch and the main passage; and fifth and sixth valves configured to control fluid communication between the main passage and the first, second, and third passages such that the fifth and sixth valves selectively provide