Enhancement of product lineup for electrification
In response to major toughening of regulations on fuel economy and exhaust gas emissions in countries around the world, the development of a variety of electric vehicles, such as hybrid electric vehicles (HEV), plug-in hybrid electric vehicles (PHEV), batteryelectric vehicles (BEV) and fuel cell electric vehicles (FCEV) is in progress. However, it is difficult to predict which electric vehicles will be adopted in the market and to what extent. AISIN Group will accelerate the development of electric powertrains based on its basic policy of enhancing its product lineup to be able to handle any type of electric vehicle and contribute to the realization of a sustainable society.
For HEV and PHEV, we have developed a 1-motor hybrid transmission based on the accumulated technologies in 2-motor hybrid transmissions, which we have provided for Toyota hybrid cars. In addition, for PHEV, BEV and FCEV, we are advancing the development of eAxle (electric drive unit) based on the accumulated technologies in the electric 4WD driving unit, which we have provided for the Toyota Prius.
1-motor hybrid transmission development initiatives
The 1-motor hybrid transmission adopts a simple structural design, placing a motor and engine cut-off clutch instead of the torque convertor in existing AT.
For low-speed driving with low engine efficiency, engine output is separated by means of a clutch to realize BEV driving using a motor. For high-speed driving, a transmission is used to facilitate acceleration without waste. Using a motor or engine at the appropriate timing during low- and high-speed driving yields a dramatic improvement in fuel economy and contributes to a straightforward and sporty drive.
In addition, because the transmissions are produced using existing AT facilities, past production resources and expertise can be utilized, which reduces additional capital investments and development costs and improves product competitiveness.
eAxle series development initiatives
By combining a motor, gear box and power control unit, eAxle can provide the optimal electric drive module that satisfies customer needs.
For example, in the case of motors, eAxle can adapt to any type of car, from compact cars to buses and trucks, by providing the capacity that meets a customer's car model and needs, combining a coaxial or parallel shaft reducer with an integratedtype or separate-type power control unit.