Renault has launched a new 1.6-litre, twin-turbo engine claimed to have the ‘feel’ of a two-litre engine with a 25% fuel consumption reduction.

The ‘Energy dCi 160 Twin Turbo’ is the automaker’s first 1.6-litre twin turbocharger diesel and delivers 160hp and a 380Nm of torque. CO2 emissions savings are also reduced by 25% compared with a comparable two-litre. 

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Renault said two turbos ensures a blend of low-end torque and high power at higher revs.

The system comprises two sequential units – the first is a very low inertia turbo which provides high low-end torque for crisp pull-away and mid-range acceleration with 90% of peak torque available from 1,500rpm.

The second turbo take over at higher speeds and produces high power (100hp per litre) at faster engine rpm to ensure smooth, linear, acceleration right the way up to maximum revs.

The engine always works within its range of optimum efficiency, which benefits fuel consumption and CO2 emissions.

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The transverse water flow system permits faster and more efficient cooling of the combustion chamber.

‘U’-section U-Flex piston rings adapt to changes in the form of the cylinder walls resulting from fluctuations in temperature and pressure to yield the optimum compromise between efficiency and friction.

DLC (Diamond Like Carbon) super-finishing of the cam followers also reduces friction. 

The fuel injection system operates at 1,800 bar to function with the twin turbocharger. It complies with Euro 6b emissions legislation and incorporates a NOx Trap and particulate filter regeneration system. 

Due to its efficiency, this engine is comfortably capable of powering larger vehicles, and will notably be available for forthcoming D- and E-segment models, Renault said.