Update 19/05/2011: The new 1.6dCi 130 engine is now available in the Megane and Megane Scenic, in which models it is being used to replace the old 1.9dCi 130 engine, providing a graphic illustration of how effectively car manufacturers are reducing engine capacity without sacrificing performance.
The new engine boasts a 30g/km reduction in CO2 emissions and a 25% reduction in fuel consumption (the combined cycle figure for the new engine in the Scenic is 64.2mpg with CO2 emissions of 115g/km).
Renault’s latest Energy dCi 130 diesel engine boasts a 20% reduction in CO2 emissions.
This is fairly impressive and might suggest that some new ‘revolutionary’ technology has been introduced that reduces emissions. In fact, the truth is rather different. The changes are the result of no fewer than eight separate changes, each of which contributes a few percent to the grand total of 20%. These changes include:
- Start-stop system – the engine automatically stops when idling and then restarts when you push down the clutch
- Modified gear ratios
- Regenerative braking
- Smaller engine capacity but same power
- Modified exhaust system (EGR)
The Energy dCi 130 engine will be of Renault’s main workhorses and is likely to appear in a number of its most popular medium and large cars, including models such as the Megane, Scenic, Laguna and Espace.
Here’s a video from Renault showing just how the new technologies work to reduce this engine’s CO2 emissions, little by little: