Patent ID: 8100804

Claim:
A hydraulic control system for an automatic transmission for a vehicle, comprising: only two valves, namely, a first solenoid valve and a second solenoid valve that are operated simultaneously to engage a first-gear step and reverse gear step engagement element for establishing a first gear step and a reverse gear step; and an N position engagement control unit that allows only the first solenoid valve and the second solenoid valve to be activated while a gear selection device is shifted to a neutral-gear step position to engage the first-gear step and reverse-gear step engagement element, wherein the automatic transmission is operated to establish a plurality of transmission gear steps by selectively operating a plurality of engagement elements including the first-gear step and reverse-gear step engagement element, and wherein the hydraulic control system engages the first-gear step and reverse-gear step engagement element when the gear selection device is shifted to a reverse-gear step position.