What is Atkinson cycle engine?

1, Atkinson cycle engine is a form of internal combustion engine invented by British engineer James Atkinson in 1882. The biggest feature of this engine is that the compression stroke is lower than the expansion stroke. This design can reduce the fuel consumption of the engine and improve the thermal efficiency.

2. Because Otto, a German, registered many patents when he invented the four-stroke engine, including the patent of the valve camshaft system, Atkinson engine can't control the compression stroke of the engine through the valve, so it can only use the complicated crankshaft connecting rod structure to realize the function that the compression ratio is lower than the expansion ratio.