Renault Bridger could get a 1.2-litre hybrid from Horse Powertrain

We recently reported that the Renault Bridger would feature a 1.2-litre 4-cylinder MPFI engine, and we now understand that a separate 1.2-litre hybrid powertrain is also in the works. Unlike the standard petrol engine, the hybrid is expected to be a 3-cylinder unit running on the Miller cycle. 

1. 1.2-litre hybrid engine will be a 3-cylinder unit running the Miller cycle  
2. Expected to borrow tech from AVL’s H12 concept shown at Vienna Motor Symposium

Renault Bridger hybrid engine details 

The three-cylinder layout helps save space, thus improving packaging for the hybrid components, while the Miller cycle is used for its higher efficiency, as is the case with most hybrid systems, where the resulting loss in power is compensated for by the electric motor.

Renault is targeting a very high fuel-efficiency figure and could adopt technology from the recently unveiled high-efficiency demonstrator showcased by engine specialist AVL at the Vienna Motor Symposium. The demonstrator, fitted to a Dacia Duster, claims an efficiency of 3.3 litres per 100km, or 30kpl.

AVL's high-efficiency demonstrator was showcased on a Dacia Duster at the Vienna Symposium.

According to AVL, the concept engine is based on the UK-based powertrain specialist Horse Powertrain’s H12 unit, but enlarged to just over 1200cc and has several other enhancements to achieve the claimed efficiency levels.

For India, Renault is likely to retain a displacement just under the 1200cc limit as it would be required to qualify the Bridger for the lower small-car tax benefits. As a result, the company could incorporate certain elements of the H12 concept while utilizing the regular H12 3-cylinder engine block.