| 单词 | piston ring |
| 释义 | piston ring in British Englishnoun a split ring, usually made of cast iron, that fits into a groove on the rim of a piston to provide a spring-loaded seal against the cylinder wall piston ring in American English a thin split ring fitted into a groove around a piston to seal the cylinder, transfer heat, and control cylinder-wall lubrication piston ring in Automotive Engineering (pɪstən rɪŋ) Word forms: (regular plural) piston rings noun (Automotive engineering: Vehicle components, Engine, transmission, and exhaust) pistonA piston ring is one of the rings, made of hard, springy material, that are part of a piston in an internal combustion engine. Shorter, lighter pistons with new piston ring surface treatment contribute to the increased horsepower and torque. Engineers design the placement of the top piston ring to be as high as possible on the piston. The piston rings seal the combustion chamber, and there will be a loss of compression if excessive wearoccurs. |
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