가솔린엔진의 냉간시동시 배기가스 포집과 재연소에 관한 연구 = The Study on the Exhaust Gas Capture and Recombustion during Cold Start of Gasoline Engine

다국어 초록 (Multilingual Abstract)

The emission characteristics of hydrocarbons during the cold start have been investigated. The measurements are focused upon the first 20 seconds of operation after starting with the engine and coolant initially at ambient temperature because this period has a major effect on HC emissions, over the FTP cycle, therefore decreasing cold start enrichment and decreasing the time to catalyst light-off are desirable. The engine examined is a 4-cylinder, 4-valve SI engine. The engine started using the starter motor. HC emissions from the exhaust system of the engine have been storaged over a period of 60 sec. during cold start using a exhaust gas storage system. Then the storaged gas was recombustioned at normal engine condition. These results indicate high reduction of engine emissions is available instead of very low torque loss using a storage bag and recombustion system.