Smaller variable-compression engine for Infiniti

The Infiniti QX50, which is set to launch in Australia during the first quarter of next year, will feature an amazing new engine under the bonnet, but the QX50 won't be the sole example of this variable-compression technology to reach consumers.

Speaking with motoring.com.au during last week's launch of the 2018 Infiniti QX80, Francois Bancon revealed that a downsized version of the QX50's 2.0-litre turbocharged variable-compression engine would also power planned series hybrids in the works.

"Today it’s a 2.0-litre turbo... 200 kW. It’s a high-performance engine. Obviously you don’t need this in a series hybrid," he said.

"But with the same technology [and] reducing the displacement we have the same efficiencies..."

How much would the displacement be reduced, given the Nissan Note e-Power (pictured) relies on a 1.2-litre three-cylinder engine to generate electricity?

"It’s not decided if it’s 1.5 [or] 1.6, it’s mainly dependent on regulations for emissions," Bancon replied.

The engine could be the go-to powerplant for all Nissan and Infiniti's series-hybrid applications in future, since the size of the engine itself is largely immaterial to how the car drives. Increase the power output from the electric motor for more performance, by all means, but the petrol engine itself wouldn't need to increase in size – irrespective of the application.

Infiniti is embarked on a platform development program, and choosing just the one petrol engine to extend the range would make engineering that platform very cost-effective. According to Bancon, the new platform, which is believed to be the basis for the next Q70 sedan – previewed by the Q Inspiration concept car – will suit larger models.