DUTY CYCLE SOLENOID VALVE OPERATION [GF4AX-EL]
BUE051721101N05
On
The coil is energized, drawing the plunger upward to open the drain port and release hydraulic pressure.
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1
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Coil
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2
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Plunger
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3
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Released
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Off
The plunger moves down due to spring force, closing the drain port to maintain hydraulic pressure.
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1
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Coil
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2
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Plunger
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3
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Pressure maintained
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|
ATF Flow
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Solenoid Valve
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Released
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On
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Pressure maintained
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Off
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• The smaller the duty ratio (percent of on time during a fixed cycle), the higher the hydraulic pressure and, inversely, the larger the duty ratio, the lower the hydraulic pressure.