Gas engine

A gas engine is an internal combustion engine that runs on a fuel gas (a gaseous fuel), such as coal gas, producer gas, biogas, landfill gas, natural gas or hydrogen. In the United Kingdom and British English-speaking countries, the term is unambiguous. In the United States, due to the widespread use of "gas" as an abbreviation for gasoline (petrol), such an engine is sometimes called by a clarifying term, such as gaseous-fueled engine or natural gas engine. Generally in modern usage, the term gas engine refers to a heavy-duty industrial engine capable of running continuously at full load for periods approaching a high fraction of 8,760 hours per year, unlike a gasoline automobile engine, which is lightweight, high-revving and typically runs for no more than 4,000 hours in its entire life. Typical power ranges from to .

]] A gas engine is an internal combustion engine that runs on a fuel gas (a gaseous fuel), such as coal gas, producer gas, biogas, landfill gas, natural gas or hydrogen. In the United Kingdom and British English-speaking countries, the term is unambiguous. In the United States, due to the widespread use of "gas" as an abbreviation for gasoline (petrol), such an engine is sometimes called by a clarifying term, such as gaseous-fueled engine or natural gas engine. Generally in modern usage, the term gas engine refers to a heavy-duty industrial engine capable of running continuously at full load for periods approaching a high fraction of 8,760 hours per year, unlike a gasoline automobile engine, which is lightweight, high-revving and typically runs for no more than 4,000 hours in its entire life. Typical power ranges from to . Q = \frac{P}{\eta} \cdot \frac{1}{LHV_{gas}} where: Q is the gas flow in norm conditions {P} is the engine power {\eta} is the mechanical efficiency LHV is the Low Heating Value of the gas File:National gas engine (Rankin Kennedy, Modern Engines, Vol II).jpg|1905 National company's ordinary gas engine of 36 hp File:Körting gas engine (Rankin Kennedy, Electrical Installations, Vol III, 1903).jpg|1903 Körting gas engine File:Backus upright gas engine (New Catechism of the Steam Engine, 1904).jpg|Backus upright gas engine File:Otto horizontal gas engine (New Catechism of the Steam Engine, 1904).jpg|Otto horizontal gas engine File:Otto vertical gas engine (New Catechism of the Steam Engine, 1904).jpg|Otto vertical gas engine File:Westinghouse gas engine, section (Rankin Kennedy, Electrical Installations, Vol III, 1903).jpg|Westinghouse gas engine File:Crossley gas engine and dynamo (Rankin Kennedy, Electrical Installations, Vol III, 1903).jpg|Crossley gas engine and dynamo File:Premier twin gas engine electric generating plant (Rankin Kennedy, Modern Engines, Vol III).jpg|Premier twin gas engine electric generating plant File:125hp gas engine and dynamo (Rankin Kennedy, Electrical Installations, Vol III, 1903).jpg|125 hp gas engine and dynamo File:Crossley engine.jpg|Crossley Brothers Ltd., 1886 No. 1 Engine, 4.5 hp single cylinder, 4-stroke gas engine, 160 rpm. File:Crossley Gas Engine - Kelham Island Industrial Museum.jpg|1915 Crossley Gas Engine (type GE130 No75590), 150 hp. File:Gas Engine in the Gas Museum - geograph.org.uk - 2120293.jpg|National Gas Engine File:Premier tandem scavenging high-power gas engine (Rankin Kennedy, Modern Engines, Vol II).jpg|Premier tandem scavenging high-power gas engine File:Blast furnace gas engine with blowing cylinder (Rankin Kennedy, Modern Engines, Vol II).jpg|Blast furnace gas engine with blowing cylinder File:Stockport gas engine and belt-driven dynamo (Rankin Kennedy, Electrical Installations, Vol III, 1903).jpg|Stockport gas engine and belt-driven dynamo

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