Development of Honda S+ Shift Utilizing e:HEV System Honda Motor Company, Limited

Format:

Book

Conference/Event

Author/Creator:

Murata, Naoya, author.

Narimoto, Ryosuke, author.

Saito, Masatoshi, author.

Ishida, Daichi, author.

Gunji, Hiroki, author.

Mitogawa, Terumasa, author.

Ukai, Yohei, author.

Kurachi, Shinobu, author.

Nagakura, Akari, author.

Shiki, Kazuki, author.

Maeda, Sadaharu, author.

Conference Name:

WCX SAE World Congress Experience (2026-04-14 : Detroit, Michigan, United States)

Language:

English

Subjects (All):

Electric motors.

Hybrid electric vehicles.

Energy consumption.

Electric vehicles.

Energy management.

Renewable energy.

Control systems.

Engines.

Local Subjects:

Electric motors.

Hybrid electric vehicles.

Energy consumption.

Electric vehicles.

Energy management.

Renewable energy.

Control systems.

Engines.

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2026

Summary:

Honda is promoting mobility electrification to realize a carbon-neutral society by 2050. Hybrid vehicles will remain advantageous over electric vehicles in terms of manufacturing cost and driving range until renewable energy usage increases, charging infrastructure is sufficiently developed, and battery costs are reduced. In response to this situation, Honda has developed a new control system, "Honda S+ Shift", which further enhances the "emotional value of driving pleasure" inherent to the e:HEV system and creates new value for hybrid vehicles. Honda S+ Shift synchronizes the engine and vehicle speed and selects a virtual gear position according to the driver's operation such as acceleration, cornering, and deceleration. Subsequently, the system achieves the required system output in cooperation with a dedicated energy management system. It also works with each vehicle system, such as drive force control, sound control, and meter cluster, to stimulate all five senses of the driver, greatly enhancing synchronization between the driver's senses and vehicle behavior. This paper explains how the concept of Honda S+ Shift is realized with the e:HEV system. Since there are no mechanical gear restrictions, Honda S+ Shift can select each gear ratio freely and enables fast shifting. On the other hand, there are difficulties in realizing realistic shifting behavior without direct connection between an engine and tires. Furthermore, e:HEV has three specific operation modes: EV, Hybrid and Engine, and Honda S+ Shift has to utilize them to keep its high efficiency. The first part of this paper describes the setting of the gear ratios, drive force and deceleration. Next, it explains engine speed control to realize sharp shifting and traction motor control to produce a realistic shift feel. Then, it describes how Honda S+ Shift utilizes three modes of e:HEV. It also refers to cooperation with sound and meter cluster control to maximize its effects

Notes:

Vendor supplied data

Access Restriction:

Restricted for use by site license