piston crown

См. также в других словарях:

• piston crown — The very top of the piston. The piston crown transmits the pressure created during the ignition of the air/fuel mixture to the piston pin, then to the connecting rod, and from there to the crankshaft. The diameter of the piston crown is slightly… …   Dictionary of automotive terms

• crown — [1] The tread area of a tire. [2] The top part of the head of a piston. [3] The outward curvature of an apparently flat sheet metal panel. [4] The curve or convex surface of a properly finished weld. [5] A model of automobile manufactured by… …   Dictionary of automotive terms

• piston dome — The top surface of a piston. It is often shaped for better combustion and to prevent a valve from contacting the surface. Also called piston crown. See piston head …   Dictionary of automotive terms

• piston head — That portion of the piston above the top ring. See piston dome piston crown …   Dictionary of automotive terms

• piston top — See piston crown …   Dictionary of automotive terms

• piston — A round or cylindrical plug, which closed at one end and open at the other. It slides up and down in the cylinder. It is attached to the connecting rod and when the fuel charge is fired, will transfer the force of the explosion to the connecting… …   Dictionary of automotive terms

• crown piston — See pent crown piston …   Dictionary of automotive terms

• Hypereutectic piston — “Hypereutectic” means over eutectic. The word eutectic refers to a condition in chemistry when two elements can be alloyed together on a molecular level, but only up to a specific percentage, at which point any additional secondary element will… …   Wikipedia

• pent crown piston — A piston design with a sloping, pent roof shaped piston crown to improve the flow of the fuel/air mixture and to increase engine compression …   Dictionary of automotive terms

• deflector piston — A piston design which had a crown designed to direct the incoming fresh mixture upwards to expel the burnt exhaust gas from the cylinder. This design is no longer used today …   Dictionary of automotive terms

• flat-topped piston — A piston with a flat not domed crown …   Dictionary of automotive terms