Subaru reveals third-generation boxer four-cylinder engine

Article by Christian Andrei, on September 23, 2010

Subaru revealed its new-generation Horizontally-Opposed 4 cylinder gasoline engine, the third generation boxer engine which promises to bring the latest engineering research and development.

For those who think that this is an updated version of the current engines they are wrong, as Subaru announced that this new engine was entirely renewed, starting from the basic structure.

According to the Japanese manufacturer, this new engine brings an approximately 10% improvement in fuel efficiency, as well as a smoother acceleration in all speed ranges.

This new powerplant will be available with 2,500 cc or 2,000 cc displacement, both with 4 cylinders.

Regarding its components, the new engine features TGV (Tumble Generated Valve), an EGR (Exhaust Gas Recirculation) cooler as well as an AVCS (Active Valve Control System) on both intake and exhaust valves.

The lightweight primary moving parts such as pistons and connecting rods, and a new compact oil pump provides 30% reduction in friction loss but also improves fuel efficiency and revolution response. Cooling has also been optimized by using separate engine cooling circuitry for the block and the head.

Topics: subaru, engine

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