Semi-Diesel

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Semi-Diesel \Sem`i-Die"sel\, a.
     Designating an internal-combustion engine of a type
     resembling the Diesel engine in using as fuel heavy oil which
     is injected in a spray just before the end of the compression
     stroke and is fired without electrical ignition. The fuel is
     sprayed into an iron box (called a hot bulb or hot pot)


     opening into the combustion chamber, and heated for ignition
     by a blast-lamp until the engine is running, when it is,
     ordinarily, kept red hot by the heat of combustion.
     [Webster 1913 Suppl.]