Automatic gear controlling method for motor vehicle, involves lowering clutch actuating pressure to zero, where oil pressure circulating in actuating pressure channel exhausts through valve in oil sump, and oil pressure is lowered to zero
摘要
<p>The method involves lowering clutch actuating pressure to zero. Oil pressure that circulates in an actuating pressure channel exhausts through a valve in an oil sump. A stop light pressure opens a return valve during the operation of the foot break for exhausting the generated oil pressure. The oil pressure is lowered to zero without the aid of a pump through cross section enlargement of actuating pressure channel.</p>
