Abstract
The control of the burning rate is very important in a common diesel engine, and is also an important problem especially in a lower compression ratio diesel engine for further improving the noise emission, thermal efficiency etc. In this paper, for the purpose of controlling the initial burning rate, it was tried to investigate experimentally and theoretically the relationship between the intake air temperature and the initial burning rate. And the effects of the intake air temperature on engine performances, startability and Nox emission, were also examined. As to the burning rate, the initial maximum burning rate almost the same as the experimental one could be obtained by calculations using the evaporating theory of droplets and the thermal reaction theory. And the possibility and the extent of controlling the initial burning rate by an increase of the intake air temperature, were made clear.
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