Investigation on the Initial Part and the Spray Formation Delay of Diesel Spray 830451

As authors reported in SAE Trans. 800968, entitled “Investigation on the Characteristics of Diesel Fuel Spray”, the flame never proceeds into the initial-part of the spray during injection. The length of the initial part-lies within 10 to 15 mm regardless of the conditions of the injection systems and of the ambient conditions. The ignition delay does not decrease but becomes constant when the ambient temperature or the pressure exceed a discrete value.
The authors would like to propose a new concept of “Spray Formation Delay” during which the field is generated where the physical and chemical delay can exist.
The spray formation delay is one of the major factors which control the above mentioned limitation of ignition delay. The characteristics of the spray formation delay are investigated and clarified.


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