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World’s first production-ready variable compression ratio engine

by DrivingEnthusiast

Infiniti has a first here with it’s new 4-cylinder variable compression engine. Why variable compression? It’s all about efficiency. This allows the engine to run at maximum efficiency by varying the compression ratio along with the boost: at zero or partial boost in the higher end of the compression range and at full boost at the lowest end of the range.

We should see more details once the formal announcement takes place at the end of September, along with – hopefully – power figures.

This engine is very much needed by Infiniti: the Mercedes 4 cylinder turbo engine offered in the base G50 and G60 (for example) is woefully underpowered and not at all competitive in any class. And while the point here is not pure power, it’s emissions and mileage, we would expect to see more competitive figures from this engine in the range of at least 240HP and 270 torque.

Note the air intake and intercooler location on the engine below – the engine as shown in this first announcement is clearly designed for a transverse installation rather than a longitudinal one (although the Infiniti lettering is oddly upside down). Therefore we’d expect to see this particular engine introduced in a FWD or AWD product, such as the Q30 or QX60. And hopefully (with a slight reorientation) across the board later on in the FM-platform based cars and SUVs.

Press release and images follow!

INFINITI VC-T: The world’s first production-ready variable compression ratio engine

Aug 14, 2016

HONG KONG – INFINITI will present VC-T (Variable Compression-Turbocharged), the world’s first production-ready variable compression ratio engine and one of the most advanced internal combustion engines ever created, on September 29 at the 2016 Paris Motor Show (Mondial de l’Automobile).

More than 20 years in development, INFINITI’s new four-cylinder turbocharged gasoline VC-T engine represents a major breakthrough in internal-combustion powertrain technology.

“VC-T technology is a step change for INFINITI,” said Roland Krueger, president of INFINITI Motor Company. “It is a revolutionary next-step in optimizing the efficiency of the internal combustion engine. This technological breakthrough delivers the power of a high-performance 2.0-liter turbo gasoline engine with a high level of efficiency at the same time.”

VC-T technology signifies a new chapter in the story of the internal combustion engine – engines are no longer limited by a fixed compression ratio. The ingenuity of VC-T engine technology lies in its ability to transform itself and seamlessly raise or lower the height the pistons reach. As a consequence, the displacement of the engine changes and the compression ratio can vary anywhere between 8:1 (for high performance) and 14:1 (for high efficiency). The sophisticated engine control logic automatically applies the optimum ratio, depending on what the driving situation demands.

VC-T technology delivers multiple customer benefits including significantly reduced fuel consumption and emissions, greatly reduced noise and vibration levels; it is also lighter and more compact than comparable conventional engines.

More information on the world-first VC-T engine will be presented by INFINITI at Mondial de l’Automobile on September 29, with the company’s press conference taking place at 12:30 p.m. local time.

INFINITI Motor Company Ltd. is headquartered in Hong Kong with sales operations in over 50 countries. The INFINITI brand was launched in 1989. Its range of premium automobiles is currently built in manufacturing facilities in Japan, the United States, United Kingdom and China. INFINITI plans to also expand manufacturing into Mexico by 2017.

INFINITI design studios are located in Atsugi-Shi near Yokohama, London, San Diego and Beijing.

INFINITI is in the middle of a major product offensive. The brand has been widely acclaimed for its daring design and innovative driver-assistance technologies.

From the 2016 season, INFINITI is a technical partner of the Renault Sport Formula One team, contributing its expertise in hybrid performance.

More information about INFINITI and its industry leading technologies can be found at www.INFINITI.com.


INFINITI VC-T The worlds first production-ready variable compression ratio engine (1)

INFINITI VC-T The worlds first production-ready variable compression ratio engine (2)

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