PRESSURE CONTROL SOLENOID B (DUTY-CYCLE TYPE) FUNCTION
D6E051719200A02
• The duty-cycle type shift solenoid adjusts the amount of output pressure according to the signal from the TCM, and controls the pressure of each clutch.
• The duty-cycle type shift solenoid, which switches on/off at 50 Hz (20 ms cycle) and controls the output pressure, is adopted. By changing the on time ratio a cycle (0-100%), the solenoid adjusts the time ratio of the open (supply) and close (drain), and maintains the 4-5 duty solenoid pressure at the designated hydraulic pressure. As a result, the clutch pressure rises when the duty ratio (50 Hz on time ratio) is reduced, and falls when the duty ratio is raised.
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1
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Output port (4-5 duty solenoid pressure)
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2
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Supply port (line pressure)
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3
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Drain
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