Powertrain configurations for two-motor, two-clutch hybrid electric vehicles

A powertrain for hybrid electric vehicles (HEV), said HEV comprising front wheels at a proximal part of the HEV and rear wheels at a distal part of the HEV, said powertrain comprising:

• a prime mover, said prime mover located substantially in the proximal part of the HEV;
• a first electric motor-generator, said first electric motor-generator mechanically coupled to said prime mover via a first clutch;
• a second electric motor-generator, said second electric motor-generator mechanically coupled to said first electric motor-generator via a second clutch, wherein said first electric motor-generator and said second electric motor-generator are distal of the front wheels, wherein further the second electric motor-generator comprises a higher power rating than the first electric motor-generator;
• gearing, said gearing mechanically coupled to said second electric motor-generator and said gearing providing motive power to the front wheels of said HEV by transmitting motive power from the distal part where the second motor-generator is located to the front wheels;
• a battery, said battery electrically coupled to said first electric motor-generator and said second electric motor-generator, said battery capable of supplying electrical energy to said first electric motor-generator and said second electric motor-generator;
• and
• a controller, said controller capable of supplying control signals to said prime mover, said first clutch, said first electric motor-generator, said second clutch and said second electric motor-generator such that said controller is capable of dynamically affecting a plurality of operating modes;
• wherein further said plurality of operating modes comprises one of a group, said group comprising:
• all electric mode, high-torque electric mode, series mode, high regeneration mode, series-parallel mode and parallel mode.