Both gasoline and diesel engine piston, there is a big difference between the main structure, usually gasoline piston diameter is relatively small, the wall thickness is relatively small, relatively light weight. Diesel engine piston diameter is relatively large, the wall thickness is relatively thick, heavy weight. The piston shape there is a considerable difference between the two.
    Gasoline and diesel engines biggest distinction is that ignition mode and into the air: gasoline into the cylinder oil and gas mixing the combustible gas, the diesel engine is pure air; gasoline is to rely on the spark plug ignition, the diesel engine is is in the compression of the air reaches the diesel autoignition temperature from the injector hole diesel fuel is injected into the cylinder high temperature, diesel spontaneous combustion.
    Say the difference between a maximum of the piston skirt, because most of the diesel engine, the piston stroke than gasoline captain, may be in the special shape of the skirt with the flywheel movement, but not all diesel engines.
    Acquire a 2-valve gasoline engine and diesel engine piston relative: the difference between the top of the piston. The gasoline piston is flat, the diesel engine piston at the top of the combustion chamber, which is the biggest difference. Retake multi-valve gasoline and diesel engine piston piston comparison: at the top has combustion chamber, but gasoline is relatively simple, the separation distance of the piston ring groove diesel engine oil ring groove Diesel hole large than gasoline. gasoline. summary, there is a large difference.