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A V20 engine is a twenty-cylinder
Beginning in the late-1930s,
piston engine
A reciprocating engine, more often known as a piston engine, is a heat engine that uses one or more Reciprocating motion, reciprocating pistons to convert high temperature and high pressure into a Circular motion, rotating motion. This article ...
where two banks of ten cylinders are arranged in a V configuration around a common crankshaft. Large diesel V20 engines have been used in diesel locomotive
A diesel locomotive is a type of railway locomotive in which the prime mover (locomotive), power source is a diesel engine. Several types of diesel locomotives have been developed, differing mainly in the means by which mechanical power is con ...
s, haul truck
Haul trucks are off-road, heavy-duty dump trucks specifically engineered for use in high-production mining and exceptionally demanding construction environments. Most are dual axle; at least two examples of tri-axles were made in the 1970s. Hau ...
s, electric generator
In electricity generation, a generator, also called an ''electric generator'', ''electrical generator'', and ''electromagnetic generator'' is an electromechanical device that converts mechanical energy to electrical energy for use in an externa ...
s and marine applications.
History
Beginning in the late-1930s, Mercedes-Benz
Mercedes-Benz (), commonly referred to simply as Mercedes and occasionally as Benz, is a German automotive brand that was founded in 1926. Mercedes-Benz AG (a subsidiary of the Mercedes-Benz Group, established in 2019) is based in Stuttgart, ...
produced several large V20 diesel engines for use in marine applications. The first engine was the ''MB 501'' which was based on the ''MB 500'' V12 engine and was installed in the 1937 class Schnellboot
E-boat was the Western Allies' designation for the fast attack craft (German: ''Schnellboot'', or ''S-Boot'', meaning "fast boat"; plural ''Schnellboote'') of the Kriegsmarine of Nazi Germany during World War II; ''E-boat'' could refer to a pa ...
(fast attack boat) and several submarines. Later versions included the supercharged ''MB 511'' engine and the ''MB 518'', which also added an intercooler. A copy of the MB 511 was produced by VEB Motorenwerk in Ludwigsfelde and called the ''VEB 20 KVD 25''. Production of the MB 518 resumed in 1951, and a version of the engine was also manufactured by MTU, called the ''MB 20 V 672''.
The Electro-Motive Diesel
Electro-Motive Diesel (abbreviated EMD) is a brand of diesel-electric locomotives, locomotive products and diesel engines for the rail industry. Formerly a division of General Motors, EMD has been owned by Progress Rail since 2010.
Electro-Motive ...
EMD 645E3 two-stroke V20 turbo-diesel engine was used in 1960s diesel-electric locomotives such as the EMD SD45
The SD45 is a six-axle diesel-electric locomotive class built by General Motors Electro-Motive Division between 1965 and 1971. It has an EMD 645E3 twenty- cylinder engine generating on the same frame as the SD38, SD39, SD40, and SDP40. As o ...
. The engine has a displacement of and produces a net traction of . The maximum gross power output is closer to 5,000 hp when operated in self-test mode (with the generated output being dissipated by resistors). Later versions of the EMD 645 engine were used in the EMD SD45-2 and EMD SD45T-2 locomotives. EMD also produces a V20 version of the EMD 710
The EMD 710 is a line of diesel engines built by Electro-Motive Diesel (previously General Motors' Electro-Motive Division). The 710 series replaced the earlier EMD 645 series when the 645F series proved to be unreliable in the early 1980s 50-se ...
diesel engine, which was used in the 1995 EMD SD80MAC locomotive. The EMD 710 remains in production to this day, and is mostly used in power generation and marine propulsion.
The Detroit Diesel Series 149 20V149 has an output of 2,936 hp (2,189 kW) from a capacity of 2,980 cu in (48.8 L). It was discontinued in 2000.
Current production V20 diesel engines include the Fairbanks Morse
Fairbanks, Morse and Company was an American manufacturing company in the late 19th and early 20th century. Founded in 1823 as a manufacturer of weighing scales, it later diversified into pumps, engines, windmills, coffee grinders, radios, far ...
FM , MAN 28/33D STC, FM , MAN 32/44CR, FM , MAN 175D, FM , COLT-PIELSTICK PA6B STC. Others are the ''Wärtsilä
Wärtsilä Oyj Abp (), trading internationally as Wärtsilä Corporation, is a Finnish corporation, Finnish company which manufactures and services power sources and other equipment in the Marine propulsion, marine and energy markets. The core ...
20V32'' which produces up to , the ''MTU 20V1163'' 6 MW (8,045 hp)''MTU 20V4000'' 2.8 MW (3,755 hp), ''MTU 20V8000'' 10 MW (13,410 hp), Cummins 120.0L QSK120 (5,000 hp). Caterpillar C175-20 4 MW (5,364 hp) and the G3520 series.
See also
*V engine
A V engine, sometimes called a Vee engine, is a common configuration for internal combustion engines. It consists of two cylinder banks—usually with the same number of cylinders in each bank—connected to a common crankshaft. These cylinder ...
*
References
{{Piston engine configurations 20 Locomotive engines Piston engine configurations 20-cylinder engines