A 4-stroke engine requires four of these movements (or two rotations of the crankshaft) to complete a power cycle in which air and fuel are drawn into the combustion chamber, compressed ...

It's been a long time since the automotive world has bothered with the mixing of oil and gas of the two-stroke combustion cycle — but soon, it may come time to rid ourselves of four-stroke ...

Recently we brought you the news that Yamaha was developing a new V4 engine for MotoGP, with plans to drop its inline-four that has seen ... “It’s something that goes back a while, because when Suzuki ...

The last time Yamaha raced a V4 engine in grand prix was the YZR500 two-stroke, before switching to the same Inline format as its production Superbikes for the start of the four-stroke MotoGP era.

Whether manufacturing pitch-perfect pianos or high-performance motorcycles, Yamaha has developed ... with a four-stroke, liquid-cooled, DOHC inline twin-cylinder engine with 689 cc displacement.

Ben Speciale, President of Yamaha's U.S. Marine ... a reputable diesel engine innovator, demonstrate the loss of power by comparing horsepower ratings of two 6.7-liter internal combustion engines ...

Yamaha Motor India has introduced the Yamaha R15 M, now featuring carbon fibre pattern graphics, priced at Rs 2.08 lakh (ex-showroom). Interested customers can purchase ... The R15M continues to run ...

Lin Jarvis, Managing Director of Yamaha Motor Racing, revealed that the Japanese brand are set for a change from the Inline-4 engine, and offered a timeframe for its introduction ...

As the shaft rotates the pistons have two different top-dead-center and bottom-dead-center positions. Variable compression is also created as a result. Adding the extra strokes should deliver a more ...