Changes

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

===Brayton's engine===

===Brayton's engine===

George Brayton, of [[Boston, Massachusetts]] was a builder of gas engines. He later built engines capable of running on liquid fuel using a fuel injection system similar to that used in Diesel engines. He obtained patents in 1872, 1874 1890.<ref>[https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=125166A&KC=A&FT=D&ND=3&date=18720402&DB=&locale=en_EP# Brayton's 1872 patent]</ref>

George Brayton, of [[Boston, Massachusetts]] was a builder of gas engines. He later built engines capable of running on liquid fuel using a fuel injection system similar to that used in Diesel engines. He obtained patents in 1872, 1874 and 1890.<ref>[https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=125166A&KC=A&FT=D&ND=3&date=18720402&DB=&locale=en_EP# Brayton's 1872 patent]</ref>

<ref>[https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=151468A&KC=A&FT=D&ND=3&date=18740602&DB=&locale=en_EP# Brayton's 1874 patent]</ref>

<ref>[https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=151468A&KC=A&FT=D&ND=3&date=18740602&DB=&locale=en_EP# Brayton's 1874 patent]</ref>

<ref>[https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=432114A&KC=A&FT=D&ND=3&date=18900715&DB=&locale=en_EP# Brayton's 1890 patent]</ref>

<ref>[https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=432114A&KC=A&FT=D&ND=3&date=18900715&DB=&locale=en_EP# Brayton's 1890 patent]</ref>