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Revision as of 15:39, February 27, 2017
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The '''Diesel engine''' is a type of [[internal combustion engine]]. It is generally attributed to the German inventor Rudolf Diesel (1858-1913) although similar engines had been invented in various countries at around the same time.
Rudolph Diesel fell from a cross-channel ferry in 1913 and drowned. It is believed that his death was suicide. Diesel was a pacifist and he was distressed that his engines were being installed in submarines for use in war.
==Working cycle==
The diesel engine is a compression-ignition engine. Unlike a gasoline engine, it does not require an electric spark to ignite the fuel. The high temperature needed to ignite the fuel is obtained purely by compression of air in the engine cylinders. Because of its high compression ratio, the diesel engine has a higher thermal efficiency than a gasoline engine.
==Uses==
Diesel engines are widely used throughout the world to power electrical generators, ships, submarines, railway locomotives, trucks, buses, construction machinery and cars. They have been used to power aircraft, notably airships, but for fixed wing aircraft, they have been supplanted by jet engines.
==Similar engines==
===George Brayton===
George Brayton, of Boston, Massachusetts patented an improved gas engine in 1872, US Patent #125166.<ref> https://www.google.com/patents/US125166?dq=george+brayton+1872</ref> This engine ran on gas but, in 1874, Brayton patented another engine which was capable of running on naphtha, a liquid fuel, US Patent #151468 A.<ref> https://www.google.com/patents/US151468?dq=george%2Bbrayton%2B1872&hl=en&sa=X&ved=0ahUKEwij3puXxbDSAhVEbRQKHTKoAEoQ6AEIIzAB</ref> A further patent was obtained in 1890.<ref> https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=432114A&KC=A&FT=D&ND=3&date=18900715&DB=&locale=en_EP#</ref>
===Akroyd Stewart===
Under construction
==Pollution==
Under certain conditions, diesel engines produce black smoke, see [[Rolling coal]]. They also produce larger volumes of nitrogen oxides than gasoline engines. Modern diesel engines are tuned to minimize smoke production and they can be fitted with urea injection systems to reduce emission of nitrogen oxides.
==References==
{{reflist}}
Rudolph Diesel fell from a cross-channel ferry in 1913 and drowned. It is believed that his death was suicide. Diesel was a pacifist and he was distressed that his engines were being installed in submarines for use in war.
==Working cycle==
The diesel engine is a compression-ignition engine. Unlike a gasoline engine, it does not require an electric spark to ignite the fuel. The high temperature needed to ignite the fuel is obtained purely by compression of air in the engine cylinders. Because of its high compression ratio, the diesel engine has a higher thermal efficiency than a gasoline engine.
==Uses==
Diesel engines are widely used throughout the world to power electrical generators, ships, submarines, railway locomotives, trucks, buses, construction machinery and cars. They have been used to power aircraft, notably airships, but for fixed wing aircraft, they have been supplanted by jet engines.
==Similar engines==
===George Brayton===
George Brayton, of Boston, Massachusetts patented an improved gas engine in 1872, US Patent #125166.<ref> https://www.google.com/patents/US125166?dq=george+brayton+1872</ref> This engine ran on gas but, in 1874, Brayton patented another engine which was capable of running on naphtha, a liquid fuel, US Patent #151468 A.<ref> https://www.google.com/patents/US151468?dq=george%2Bbrayton%2B1872&hl=en&sa=X&ved=0ahUKEwij3puXxbDSAhVEbRQKHTKoAEoQ6AEIIzAB</ref> A further patent was obtained in 1890.<ref> https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=US&NR=432114A&KC=A&FT=D&ND=3&date=18900715&DB=&locale=en_EP#</ref>
===Akroyd Stewart===
Under construction
==Pollution==
Under certain conditions, diesel engines produce black smoke, see [[Rolling coal]]. They also produce larger volumes of nitrogen oxides than gasoline engines. Modern diesel engines are tuned to minimize smoke production and they can be fitted with urea injection systems to reduce emission of nitrogen oxides.
==References==
{{reflist}}