A study on performance and exhaust emission characteristics according to the controllable pitch propeller operation of two-stroke diesel engine in sailing condition
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The engine performance and exhaust gas emissions of a ship equipped with a two-stroke diesel engine and another equipped with a controllable pitch propeller(CPP) were compared in combinator and constant modes under varying engine loads. Baek-kyung, a fishery training ship at Pukyong National University, can operate a (CPP) in combinator and constant modes during sailing. When the propeller's rpm and pitch were changed simultaneously in the two-stroke diesel engine while sailing, and when the rpm was fixed and only the propeller pitch was controlled, the performance and exhaust emissions when the propeller pitch was controlled were compared with those of the four-stroke diesel engine. Both the two- and four-stroke diesel engines exhibited good performance when operating in combinator mode. With regard to nitrogen oxides emissions, the constant mode was generally low; however, the emissions tended to decrease as they increased to a high-load area. It is expected that the performance and exhaust emissions according to the operation mode of the two-stroke diesel engine will serve as basic data reference for improving the efficiency of the two-stroke diesel engine and (CPP).
Abstract
The engine performance and exhaust gas emissions of a ship equipped with a two-stroke diesel engine and another equipped with a controllable pitch propeller(CPP) were compared in combinator and constant modes under varying engine loads. Baek-kyung, a fishery training ship at Pukyong National University, can operate a (CPP) in combinator and constant modes during sailing. When the propeller's rpm and pitch were changed simultaneously in the two-stroke diesel engine while sailing, and when the rpm was fixed and only the propeller pitch was controlled, the performance and exhaust emissions when the propeller pitch was controlled were compared with those of the four-stroke diesel engine. Both the two- and four-stroke diesel engines exhibited good performance when operating in combinator mode. With regard to nitrogen oxides emissions, the constant mode was generally low; however, the emissions tended to decrease as they increased to a high-load area. It is expected that the performance and exhaust emissions according to the operation mode of the two-stroke diesel engine will serve as basic data reference for improving the efficiency of the two-stroke diesel engine and (CPP).
참고문헌 (16)
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