Engine Proper.
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Combustion Chamber
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Shape of piston head
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The upper surface of the piston makes up a part of the combustion chamber, and is specially formed to make turbulence in order to improve the mixture of the air and fuel.
The sunken shape of the upper surface of the piston is deeper on the direct injection type. Among them, the troidal type is used the most. The piston of the swirl chamber type is shallow because almost all of air-fuel mixture is burned in the swirl chamber. Some of these types are flat. |
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