Honda To Replace IMA Hybrid System with New Sports Hybrid

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Well-known member
Nov 7, 2012
Honda today revealed information on its new hybrid powertrain system that will replace the outgoing Integrated Motor Assist (IMA) system on its Civic sedan, Fit, Insight and the CR-Z Coupe.

Known as the Honda SPORTS HYBRID Intelligent Dual Clutch Drive system, the new setup is a lightweight and compact one-motor hybrid solution optimized for small-sized vehicles. The system consists of a 1.5 liter 4-cylinder engine that runs a more efficient Atkinson cycle and is connected to a 7-speed dual-clutch transmission. Honda says that the built-in high-output motor and lithium-ion battery improve efficiency by more than 30 percent.

“Together with the SPORT HYBRID Intelligent Multi Mode Drive, the world’s most efficient two-motor hybrid system optimized for mid-sized vehicles, and the SPORT HYBRID SH-AWD (Super Handling – All Wheel Drive), the three-motor hybrid system optimized for large-sized vehicles enabling independent control of torque distribution to both right and left rear wheels, the newly developed SPORT HYBRID Intelligent Dual Clutch Drive will constitute the lineup of three different Honda SPORT HYBRID systems that accommodate different vehicle characteristics,” Honda said in a statement. “Honda will continue expanding the application of these hybrid systems based on vehicle characteristics.
Two-motor SPORT HYBRID Intelligent Multi Mode Drive / Plug-in:
Through the adoption of high-efficiency/high-output motors, both brisk acceleration with an EV-like driving feel and high fuel efficiency are realized at the same time. This hybrid system realizes the world’s highest efficiency1 by combining a newly-developed engine dedicated to hybrid vehicles coupled with two built-in motors and a lock-up clutch, along with a Lithium-Ion battery, and by optimally switching the driving mode among three different profiles depending on the driving situation. This hybrid system, which is also suitable as a plug-in hybrid system, will be available in the North American version of the 2014 Honda Accord Plug-in, scheduled to be introduced to the market in January 2013. The system switches the operation among the following three driving modes depending on driving conditions and the battery charge level:

“EV Drive” for driving by the electric motor only, using electricity from the battery and regeneration during deceleration
“Engine Drive” for medium-to high-speed cruising with the engine and axle directly connected by a lock-up clutch, with engine power mechanically transferred to the wheels
“Hybrid Drive” for urban driving and powerful acceleration using the motor with electricity generated by the engine