정적연소기에서 LPG연료의 열유속 계측에 관한 연구

Lately new regulations regarding harmful exhaust gases and fuel economy have bee enforced. The major research focuses on the reduction of exhaust gases and improvement of fuel economy. In order to achieve that alternative fuel as well as a lean bum combustion were used. Lean burn combustion has problems mainly related to the unstable combustion condition, as a result of the ignitability defect, low pressure and heat loss due to combustion period expanding. For that reason spark ignition process, air fuel mixture flow and satisfied charge of combustion chamber need to be improved. The major factor of designing lean bum combustio engine is to prevent misfire. Recently research has focused on ultra lean bum combustion engine as it produces misfire. The reason for that is the increase in tile air to air fuel mixture ratio, which is adjusted from 30: 1 to 50: 1. To solve this problem, spark plug of traditional engine should be improved. Further more the location should be adjusted. Tltis research analyses a method of combustion, when stratified charge is ignited with LPG. Further more we investigated the combustion field using thermocouple which is self-manufactured. As a result, the results present the optimum condition of ultra lean bur combustion characteristics.