Honda Accord 2008 Manual page 896

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07/11/02 08:46:47 61TA0000_140_0053

Regulator Valve

The regulator valve maintains constant hydraulic pressure from the ATF pump to the hydraulic control system, while

also providing fluid to the lubrication system and the torque converter. The fluid from the ATF pump flows through B

and C. Fluid entering from B flows through the valve orifice to the A cavity. This pressure in the A cavity pushes the

regulator valve toward the valve spring side, and this movement of the regulator valve uncovers the fluid port to the

torque converter and the relief valve. The fluid flows out to the torque converter and the relief valve, and the regulator

valve returns under spring force. According to the level of the hydraulic pressure through B, the position of the

regulator valve changes, and the amount of fluid from C through torque converter also changes. This operation is

continuous, maintaining the line pressure.

Increases in hydraulic pressure according to torque are regulated by the regulator valve using stator torque reaction.

The stator shaft is splined with the stator in the torque converter, and its arm end contacts the regulator spring cap.

When the vehicle is accelerating or climbing (torque converter range), stator torque reaction acts on the stator shaft,

and the stator arm pushes the regulator spring cap in the direction of the arrow in proportion to the reaction. The

stator reaction spring compresses, and the regulator valve moves to increase the line pressure which is regulated by

the regulator valve. The line pressure reaches its maximum when the stator torque reaction reaches its maximum.

REGULATOR VALVE

TORQUE CONVERTER

REGULATOR VALVE

STATOR SHAFT

To LUBRICATION and

To RELIEF VALVE

STATOR SHAFT

VALVE SPRING

From ATF PUMP

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