Eco Innovation Application Summary ACEA

This page was last updated on 11th August 2021

Executive summary of the application


12V efficient charging through intelligent control of hybrid vehicle recuperated kinetic energy for use in hybrid powered passenger cars (M1) and light commercial vehicles (N1)


Applicant’s name ACEA
Applicant’s Address: Avenue des Nerviens 85, B-1040 Brussels, Belgium
Contact Person: James Lethbridge / Jaguar Land Rover LTD Abbey Road, Whitley, Coventry, CV3 4LF, United Kingdom


Hybrid vehicles and certain conventional vehicles with capability to recuperate kinetic energy and redeploy the energy for torque assist to the combustion engine are also capable of redeploying the energy more efficiently to supply the vehicle 12V board net through a DC/DC converter, therefore reducing the need for actively charging the 12V board net by burning fossil fuel.

When the recuperated kinetic energy is more abundant than the demand to supply the 12V board net under the type approval condition, off-cycle benefit of such system can be quantified. Building on the previously submitted application for 48V motor generator plus 48V/12V DC/DC converter technology by ACEA (approved Implementing Decision EU 2020/1167), which takes account only the generator function benefit versus a conventional alternator technology, this application focuses on the system benefit on top of the 48V MG application, taking account for the regenerative braking / energy harvest and torque assist function.

Combined with the 48V MG application, the total benefit of hybrid vehicles and certain conventional vehicles in efficiently charging the 12V board net can be realistically represented. The proposed methodology delivers a WLTP based CO2 saving potential through intelligent control of recuperated kinetic energy. The simplified calculation methodology uses input data from component and type approval testing and calculates the off-cycle CO2 savings.


The market penetration of NOVC-HEV hybrid electric vehicles in 2017 was 2.6% in the EU 28 (that is EU27 + U.K.) and 2.4% in the U.K. and therefore smaller than 3%


The function to supply energy to the vehicle boardnet is essential for the safe operation of the vehicle.


The  testing  methodology  is  the  “simplified  method” according  to  Regulation  (EU)  2018/258, Article 4, section b iii (ea).

The  simplified  calculation  methodology  uses  input  data  from  extended  type  approval  testing and component testing.