Editing Indirect injection (section)

==Gasoline engines==
An advantage of indirect injection gasoline engines versus direct injection gasoline engines is that deposits on intake valves from the [[crankcase ventilation system]] are washed by the fuel.<ref>{{Cite journal|last1=Smith|first1=Scott|last2=Guinther|first2=Gregory|date=2016-10-17|title=Formation of Intake Valve Deposits in Gasoline Direct Injection Engines|url=https://www.sae.org/publications/technical-papers/content/2016-01-2252/|journal=SAE International Journal of Fuels and Lubricants|language=en|volume=9|issue=3|pages=558–566|doi=10.4271/2016-01-2252|issn=1946-3960|url-access=subscription}}</ref> Indirect injection engines also tend to produce lower amounts of [[particulate matter]] compared to direct injection engines as the fuel and air are more uniformly mixed.