FEEDBACK CONTROL OPERATION [FN4A-EL]
BME051718880T23
• When shifting, real-time feedback correction of the clutch engagement pressure is operated by the duty-cycle solenoid valves so that the speed change of the turbine shaft (change of the turbine rotating speed) matches the predetermined target value.
• Also, the clutch engagement pressure is optimally corrected so as to absorb the changes in engine performance and/or of elapsed transaxle, according to the shift results in the past.
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1
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Turbine rotating speed
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2
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Hydraulic pressure
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3
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Clutch engagement pressure
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4
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Target turbine rotating speed
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5
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Controls turbine change rate at start of shift so that target value is obtained
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6
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Performs feedback control so that target change rate of the turbine rotating speed is obtained
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7
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Time
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