In this study, a shift control algorithm for improving shift quality of a parallel hybrid drivetrain with an automated manual tranmission (AMT) is proposed. The general AMT requires sophisticated control of clutch in clutch engagement to improve its shift characeristics, and that is generally known to be difficult. But in this hybrid drivetrain, we can control the speeds of clutch plates by engine and motor controls and it provides the easier clutch control in shift process than general AMT. Additionally, it permits much-reduced shift shock. The motor control during the shift period also enables the velocity drop of the vehicle to be reduced, compared to that of a general AMT. Furthermore various dynamometer-based experiments are carried out to prove the validity of the proposed shift control algorithm.
A development of shift control algorithm for improving the shift characteristics of the automated manual transmission in the hybrid drivetrain
Entwicklung eines Schaltprogramms zur Optimierung der Schaltcharakteristik eines automatisierten Schaltgetriebes in einem Hybrid-Antriebsstrang
International Journal of Vehicle Design ; 26 , 5 ; 469-495
2001
27 Seiten, 21 Bilder, 1 Tabelle, 8 Quellen
Article (Journal)
English
A development of shift control algorithm for automated manual transmission in the hybrid drivetrain
Automotive engineering | 2000
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