小形直接噴射式ディーゼル機関の始動性と青・白煙に関する研究 : 第5報,燃焼室材料の影響

概要

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The combustion chamber surface and cylinder air temperatures during cranking have been investigated in a direct injection diesel engine with combustion chambers of various conductivity materials, and the influence of combustion chamber materials and surface deposits on the cold startability was tested. The insulated chamber made of bakelite indicated higher surface and air temperatures than did the copper chamber with larger conductivity. As the result, the starting time in the copper combustion chamber for cold operation was 5 times longer than that in the bakelite chamber, and it was found that there is a relationship between the cold startability and the thermal conductivity of combustion chamber materials, and that the cold startability is improved by the increase of the combustion chamber deposits.
社団法人日本機械学会の論文
1990-04-25