Products

World-first Compact 7 Speed automatic transmission for evs

C7SAT

Compact 7 Speed automatic transmission

Developed the world's first C7SAT for EV

➥ C7SAT(Compact 7 Speed automatic transmission)

▶ Realized automatic shifting without hydraulic devices occupying most of the space
of automatic transmission
➥ Succeeded in drastically reducing the volume and weight to less than 1/5
of the existing automatic transmission
➥ Applicable to electric two-wheeled vehicles and electric passenger vehicles

▶ Realized automatic transmission without energy consumption like a manual transmission
➥ About 10% of energy consumed in the existing automatic transmission has been reduced

Developed Korea’s first ‘ TCU(Transmission Control Unit)’

▶ Added a TCU(Transmission Control Unit)’ to the existing controller, which is a MCU(Motor Control Unit)
➥ Completed the ‘shift logic’ unit reflecting transmission·driving situation·algorithm

First, developed a power trains for electric two-wheeled vehicles

▶ Based on the development results of C7SAT and TCU,
➥ first, developed a powertrain (drive system) for electric two-wheeled vehicles consisting of transmission·controller·motor

Applicable to various fields

▶ C7SAT is applicable not only to vehicles, but also to ships·aircraft, etc.
➥ Applicable to various fields driven by motors

C7SAT – Design & Connecting

Differential gear type C7SAT
for EV4W
Center type C7SAT
for EV2W

Differential gear Type Transmission Design

Side type C7SAT for EV2W

※ Size is to be customized

Gear	1st Gear	2nd Gear	3rd Gear	4th Gear	5th Gear	6th Gear
Gear Ratio	2.000	1.486	1.122	0.851	0.6415	0.500

C7SAT Connecting drawing for EV2W

Center type connecting figure

Logo

BYGEN CO.LTD CEO:Kim Bog Sung

3F, 15 Chogwangsandandong-ro 6beon-gil, Hanam-si, Gyeonggi-do, South Korea E-mail:bygen@bygen.net Tel +82 1577-6020 Fax +82 2-427-1479