*04
45
Hydraulic Controls (cont’d)
Regulator Valve
14-290
Automatic Transmission
System Description (cont’d)
VALVE
ORIFICE
REGULATOR VALVE
A
B’
B
From ATF PUMP
To TORQUE CONVERTER
To LUBRICATION
TORQUE CONVERTER
STATOR
REGULATOR VALVE BODY
REGULATOR VALVE
STATOR SHAFT ARM
REGULATOR SPRING CAP
STATOR SHAFT
The regulator valve maintains constant hydraulic pressure from the ATF pump to the hydraulic control system, while
also furnishing fluid to the lubricating system and torque converter. Fluid from the ATF pump flows through B and B’.
Fluid entering from B flows through the valve orifice to the A cavity. This pressure of the A cavity pushes the regulator
valve to the right 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 moves to the
left side. According to the level of the hydraulic pressure through B, the position of the regulator valve changes, and
the amount of fluid from B’ through torque converter changes. This operation is continued, maintaining the line
pressure.
NOTE: When used, ‘‘left’’ or ‘‘right’’ indicates direction on the illustration.
Increases in hydraulic pressure according to torque are performed by the regulator valve using stator torque reaction.
The stator shaft is splined to 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.
03/07/29 09:37:20 61S0X050_140_0293
Содержание 2004 Odyssey
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