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Technology

The proposed hybrid transmission design features a dual-shaft, clutchless transmission configuration to improve powertrain performance. Powertrain performance improvements result from a clutchless transmission design paired with a speed-matching concept in a hybrid system. A hybrid system uses an electric motor (EM) in unison with an internal combustion engine (ICE) to maintain high-performance operation and fuel efficiency in urban driving.

This transmission design achieves a significant reduction in transmission mass through removal of a clutch and several gears. Additionally, this hybrid design improves transmission efficiency while also reducing inertial, frictional, and mechanical losses. Speed-matching functionality assists the electric motor and allows for clutchless gear shifting.