A Study of the Cold Smoke from a Direct Injection Diesel Engine ?The Effect of Cylinder Wall and Intake Air Temperature on the Cold Smoke?

摘要

In this paper we investigated the effects of the cylinder wall and intake air temperature on the white and blue smoke which appeared when a direct injection diesel engine was started in cold weather. We found that an increased cylinder wall temperature effectively reduces the white smoke immediately after the starting because of the shortening of the starting time. On the other hand, it was confirmed that a higher intake air temperature effectively reduces the blue smoke as time passes after the engine is started.