petrol engine noun an internal-combustion engine that uses petrol as fuel Liberaldictionary.com
Collins English Dictionary – Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Examples from the Web for petrol engine Historical Examples of petrol engine
Bickerton found many odd jobs to occupy his time in connexion with the petrol-engine and the wireless installations.
Douglas Mawson
The petrol-engine, as now used, emits the products of combustion at a high pressure.
Archibald Williams