Three JLR prototypes incorporating the new eDM in different configurations will be exhibited at this year’s CENEX Low Carbon Vehicle event. Dubbed ‘Concept_e’, the demonstrators show three ways in which more efficient drivetrains could appear in the Land Rovers of the future.
The modular eDM has been developed in-house by JLR, and can be inserted between any engine and transmission to create MHEV (‘Mild Hybrid Electric Vehicles’, where he battery is charged by the engine) or PHEV (‘Plug-in Hybrids’), or used alone for a BEV (‘Battery Electric Vehicle’).
The technologies are the result of a research programme which began in 2013. Led by Jaguar Land Rover, this two-year £16.3m research project is part-funded by the UK’s innovation agency, Innovate UK1 and involves twelve UK technology partners.
Dr Wolfgang Epple, Director of Research and Technology, Jaguar Land Rover, said: ‘This is a long-term Jaguar Land Rover research project exploring all aspects of future hybrid and battery electric vehicle technology. The three Concept_e vehicles will allow us to test and develop exciting new potential technologies that could form part of our low and zero emissions vision beyond 2020.
‘Environmental Innovation is at the heart of our business. We have a wide-ranging low emissions technology strategy [and] we are leaving no stone unturned to ensure Jaguar and Land Rover vehicles emit significantly less emissions in the future.’
The three Concept_e research demonstrators
Concept_e MHEV – Range Rover Evoque
The Mild Hybrid is based on a Range Rover Evoque donor vehicle and features a prototype diesel engine (90 PS) and a 48V electrical system. It incorporates a 15 kW crank integrated motor with disconnect clutch within a hybrid module sandwiched between the engine and nine-speed transmission. The motor-generator is powered by an advanced 48-volt electrical system and 48-volt lithium ion battery pack.
Concept_e PHEV – Range Rover Sport
The Plug-In Hybrid employs a similar architecture to the MHEV but with a prototype petrol engine (300 PS) and eight-speed transmission longitudinally mounted within a Range Rover Sport donor vehicle. The electric motor is capable of up to 150 kW and also takes up the function of the starter motor. The motor draws electrical energy from a 320-volt lithium ion battery packaged in the boot. The hybrid powerplant drives through the conventional automatic gearbox normally fitted to the Range Rover Sport and the full time four-wheel drive system is retained.
Based on Jaguar Land Rover’s aluminium vehicle architecture, the underbody has been modified to mount the 70 kWh HV lithium ion traction battery and electric axle drive (EAD) units. The front drive unit features a single speed transmission coupled with an 85 kW electric motor. The rear drive unit features a twin speed transmission coupled with a 145 kW electric motor.