Honda: All-new Fit Hybrid Motor Technology
2-Motor system in a compact car: JSAE Fall Conference presentation
2020/12/11
- Summary
- e:HEV system overview
- Evolution of the Drive Motor
- Magnetic circuit shape
- Adoption of a new type of winding insulation film
- Caulking-free laminated stator core
- Changing the rotor magnet split direction
- Evolution of current controls
- Effects of loss reduction
- Q&A after the presentation
Summary
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| Honda’s all-new compact car FIT (Source: Honda) |
The all-new Fit hybrid launched by Honda Motor Co., Ltd. (Honda) in February 2020 is equipped with the e:HEV 2-motor system; the vehicle uses the electric motors for most everyday driving scenarios.
This report is based on the presentation at the 2020 JSAE (Society of Automotive Engineers of Japan) Congress (Autumn) of the technical paper by Mr. Keisuke Azusawa and others (Honda R&D Co., Ltd.), “Development of Low Loss Motor for Small Hybrid System” (Vol. No. 20206063), which introduces the new technology of the motors installed in the electric drive powertrain.
The all-new Fit adopts a polyimide material for the insulation coating of the motor windings to install the 2-motor hybrid system in a compact car which was previously used in mid-size cars. Motor losses have been reduced 14% and the system size has been reduced due to such improvements as the high torque characteristics of the magnetic circuit, the caulkless core, the change in direction of the magnet segments, and the current control system.
Related reports:
Honda Fit Hybrid Teardown: Details of 1.5L HEV Engine (Nov. 2020)
Honda Fit Hybrid Teardown: Electric Components (Oct. 2020)
Automotive World 2020: Fuel-efficient engine technologies (Mar. 2020)
Tokyo Motor Show 2019: Exhibits from Nissan, Honda and Mitsubishi (Nov. 2019)
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