Toyota's New Hybrid Unit "L4A0" Toyota Motor Corporation

Format:

Book

Conference/Event

Author/Creator:

Tan, Guodong, author.

Contributor:

Baba, Masayuki

Hamano, Makoto

Hasegawa, Yoshio

Herring, Craig A.

Ikemura, Masashi

Mizoguchi, Yasuhiro

Nakamura, Atsuro

Niinomi, Atsushi

Ohki, Takao

Conference Name:

WCX SAE World Congress Experience (2022-04-05 : Detroit & Online, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2022

Summary:

Toyota developed a new hybrid unit "L4A0" for the new Tundra, which creates both good drivability and environmental performance. To ensure off-road, towing performance and typical truck driving characteristics, the unit is based on a transmission with a torque converter and a multi-plate lock up clutch, with a motor-generator and K0 clutch installed between the engine and transmission. The motor-generator and K0 clutch are built into a module, making it possible to create new hybrid units by combining the module with various transmissions. The unit features many different motor controls. For example, in the case of step-in acceleration input, in order to achieve the desired output torque, typically a kick-down shift is necessary [1]; however, by utilizing "L4A0" both high response and high power output is achieved even without a kick-down shift. This is accomplished by assisting the engine with the motor-generator even when the engine torque is delayed at low engine speeds. Simultaneously, this contributed to better fuel economy by allowing the engine to work at optimum speeds [1-3]. Another feature is the high-response and shock-less engine start that is achieved by cranking the engine with the motor-generator via the K0 clutch

Notes:

Vendor supplied data

Publisher Number:

2022-01-0656

Access Restriction:

Restricted for use by site license