Changes

==Similar engines==

==Similar engines==

These engines have some similarities to diesel engines but they are not true compression ignition engines because they use an auxiliary source of heat to ignite the fuel.

These engines have some similarities to diesel engines but they are not true compression ignition engines because they use an auxiliary source of heat to ignite the fuel.

===George Brayton===

===Brayton's engine===

George Brayton, of [[Boston, Massachusetts]] patented an improved gas engine in 1872, US Patent #125166.<ref> https://www.google.com/patents/US125166?dq=george+brayton+1872</ref> This engine ran on gas but, in 1874, Brayton patented another engine which was capable of running on naphtha, a liquid fuel, US Patent #151468 A.<ref> https://www.google.com/patents/US151468?dq=george%2Bbrayton%2B1872&hl=en&sa=X&ved=0ahUKEwij3puXxbDSAhVEbRQKHTKoAEoQ6AEIIzAB</ref> A further patent was obtained in 1890.<ref> https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=432114A&KC=A&FT=D&ND=3&date=18900715&DB=&locale=en_EP#</ref>

George Brayton, of [[Boston, Massachusetts]] was a builder of gas engines.  In 1890, he patented an engine running on liquid fuel.  It used a fuel injection system similar to that used in Diesel engines.<ref> https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=432114A&KC=A&FT=D&ND=3&date=18900715&DB=&locale=en_EP#</ref>

===Akroyd Stewart===

===Akroyd Stewart===