With no fewer than 30 patents registered, the Energy dCi 130 features a raft of solutions that have enabled significant CO2 emissions (-20%) and fuel consumption savings (-30g/km)*:
Low pressure EGR (Exhaust Gas Recirculation) : Renault will be the first volume manufacturer to introduce this technology on a wide scale in Europe. Low pressure EGR involves uprating the exhaust recirculation rate while at the same time containing intake pressure and the temperature of the turbocharger. The system consists in recovering the exhaust gases further downstream, once they have been through the turbine and particulate filter. Emissions of nitrogen oxides are eliminated more efficiently in this way than is the case with a high pressure EGR, and engine efficiency is improved. The combustion is of a higher quality and CO2 emissions are reduced.
Stop&Start technology involves automatically cutting the engine when the vehicle comes to a standstill, and re-starting it when the vehicle needs to pull away again. This technology is to be gradually introduced on forthcoming engines.
Variable swirl technology actively controls how the mix swirls inside the combustion chamber as a function of the demand being made of the engine.
A variable displacement oil pump allows oil flow to be adjusted as a function of the engine's precise needs in order to minimise the amount of energy required to drive the pump.
Thermal management increases the speed at which the engine reaches its working temperature in order to minimise friction (oil viscosity).
Multi-injection strategy uses latest-generation seven-hole solenoid-operated injectors which are capable of generating several, extremely short squirts (up to six per cycle), thereby permitting combustion efficiency to be finely adjusted. This technology results in lower fuel consumption, fewer polluting emissions and less noise.
ESM (Energy Smart Management): This involves recovering the energy generated under deceleration and braking to relieve the engine by isolating the alternator during moments of low efficiency. This entails changes to battery technology.
* Fuel consumption and CO² emission figures certified under applicable regulations.