Modelling and analysis of powertrain hybridization on all-wheel-drive sport utility vehicles

• Published in: Proceedings of the Institution of Mechanical Engineers. Part D, Journal of automobile engineering Journal of automobile engineering, 2004-10, Vol.218 (10), p.1125-1134
• Main Authors: Liao, G Y, Weber, T R, Pfaff, D P
• Format: Article
• Language: English
• Subjects: Applied sciences; Automobile engines; Design engineering; Exact sciences and technology; Gears; Hybrid vehicles; Hybridization; Mechanical engineering. Machine design; Sport utility vehicles
• ISSN: 0954-4070; 2041-2991
• DOI: 10.1177/095440700421801007

Abstract Four concepts of strong hybridization powertrains on all-wheel-drive sport utility vehicles are presented. These concepts enable conversion of conventional powertrains into strong hybrid powertrains with minimal tear-up to the existing architecture. The first concept incorporates an electric machine attached to the output side of a conventional transmission. The second concept is a strong input power-assist system, where the motor is packaged between the torque converter and the transmission. The third concept is similar to the second one, but the torque converter is replaced by a starting clutch. The fourth concept is a compound-input, power-split, electric-variable transmission (EVT). These concepts provide extensive hybrid functionality, such as motor-only drive, launch assist, and energy recuperation. Simulation results indicate that proposed strong hybrid concepts can result in fuel economy gains of 19-26 per cent over conventional powertrains.