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A petrol-paraffin engine (United Kingdom) or gasoline-kerosene engine (North America) is an old-fashioned type of dual-fuel internal combustion engine with spark-ignition, designed to start on petrol (gasoline) and then to switch to run on paraffin (kerosene) once the engine is warm. The grade of paraffin used is known as tractor vaporising oil in the UK. ==Advantages== The advantages of the petrol-paraffin engine are that (compared to petrol): # Paraffin can be cheaper and/or more readily available # Being less flammable, paraffin is safer to store # Being less volatile, paraffin is less likely to go "stale" in the tank. Some of these advantages have become illusory since paraffin, once widely available as a cheap fuel, has become rarer and more expensive, particularly in developed countries. Also, while some older vessels still use marine petrol-paraffin engines, most inboard marine engines now tend to be diesels. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Petrol-paraffin engine」の詳細全文を読む スポンサード リンク
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