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ENGINE-TRANSMISSION INTEGRATION CONTROL

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2016 – MX-5 – Transmission/Transaxle

ENGINE-TRANSMISSION INTEGRATION CONTROL

  • The TCM controls engine output torque and reduces transmission output shaft torque fluctuation during auto shifting, and reduces shock occurring from the vehicle during shifting.

  • During auto shifting, the TCM sends the torque reduction request signal using the CAN system and temporarily reduces the engine output torque by the engine ignition timing retard control. As a result, transmission output shaft torque fluctuation is reduced during auto shifting by smooth engagement of the clutch.

  • In addition, the TCM receives the engine output torque from the PCM via the CAN signal to determine the clutch engagement pressure according to the engine output torque. As a result, the clutch hydraulic control setting accuracy is increased and smooth shift performance is achieved.

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