Ricardo launches new ‘E-Axle’ EV transmission

by Autocar Pro News Desk , 14 Sep 2018


Drawing upon research and technology that it has developed and proven in markets from Formula-E to supercars, Ricardo has developed a new E-Axle transmission that it says offers a balance of efficiency and performance, together with low total cost of ownership.

Prompted by the rising demand for battery electric vehicles (EVs) and the increasing range of electric machines available for selection by automakers, Ricardo has created a single-speed EV transmission, the first in a planned range of such products, using knowledge and experience developed both on and off the track. Capable of accommodating both high torque and high input speeds, this advanced modular EV transmission was revealed at the LCV event two days ago. The E-Axle can be used in a wide range of installed orientations, and is equipped with high strength, lightweight aluminium casings that are ideal for direct integration into space-constrained environments.

“It’s imperative that to support the driveline requirements of tomorrow’s electric vehicles, we utilise our experience gained across a number of demanding projects and sectors to develop a product that can be manufactured in niche volume and short lead times,” commented Ricardo Performance Products MD Mark Barge. “With our new E-Axle EV transmission, we are offering a highly adaptable solution that will provide an extremely cost-effective means of delivering high quality electric traction to the road. We look forward to supporting customers – from the established automotive industry to EV start-ups – with this flexible transmission product.”

The specifications of the new single-speed Ricardo E-Axle electric vehicle transmission is as follows:

E-Axle Specification    
Max input torque: 500 Nm
Max input speed: 12000rpm
Ratio availability:10.1 : 1  /  9.1 : 1 / 7.2 : 1
Weight: 34kg
Lubrication: Forced (separate pump) or splash (wet sump)
Motor compatibility (with adaptor): YASA 400, AVID 230, BW/Remy 250, EQ 150
Park brake: Electric actuation
Differential:  Ramp and plate limited slip or free