1944-01-01

Special COLD-STARTING FUELS for Diesel Engines 440172

A STUDY of fuels for the cold starting of diesel engines has brought the authors to the following conclusions:
  1. 1.
    Normal petroleum hydrocarbon fuels will permit the starting of the best automotive engines at temperatures not below about 20 F without supplementary starting aids.
  2. 2.
    Materials blended into normal diesel fuels in optimum concentration to improve cetane number and cold starting may give a reduction in minimum starting temperatures of probably not over 20-25 deg.
  3. 3.
    Ethyl ether introduced into the air stream of diesel engines (not including crankcase scavenge) will allow starting down to at least -40 F without additional starting aids, but provided the crankcase lubricant and cranking facilities give sufficient cranking speed.

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