| 摘要 |
PURPOSE: A piston for natural gas engine is provided to reduce exhaust gas by improving a shape of a combustion chamber and by reducing the formation of quenching zone. CONSTITUTION: A piston for natural gas engine includes an inclined surface(3) and a vertical concave hole(4). The inclined surface, which is slanted at a prescribed angle, has a hole formed gradually deeper along a circumferential direction of a piston on the basis of a point of a side of the piston, which is divided into two part. The vertical concave hole is dug up from the upper surface of the piston to make the bottom surface level on the basis of a boundary line(3') of the inclined surface in the other side of the piston.
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