Assertion: dual ignition | /r/HasProperty | necessary
Facets:
value: to combust the entire fuel mixture
type: PURPOSE
Source sentences:
text: As the size of the combustion chamber determines the time to burn the fuel charge, dual ignition was especially important for the large-bore aircraft engines around World War II where it was necessary to combust the entire fuel mixture in a shorter time than a single plug could provide, in order to build peak cylinder pressure at the rpm desired.