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Straight-seven engine

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(Redirected from Inline-seven engine)
Straight-seven engine with firing order 1-3-5-7-2-4-6

A straight-seven engine (also known as a inline-seven engine) is a straight engine with seven cylinders. It is more common in marine applications because these engines are usually based on a modular design, with individual heads per cylinder.

Marine engines

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Straight-seven engines produced for marine usage include:

  • Wärtsilä-Sulzer RTA96-C two-stroke crosshead diesel engine[1]
  • Wärtsilä 32 trunk piston engines[2]
  • MAN Diesel IMO two-stroke crosshead diesel engine[3]
  • Burmeister & Wain 722VU37 two-stroke diesel engine (commenced 1937, used in the Danish Havmanden-class submarines
  • Sulzer 7QD42 diesel engine (1939-1940, used in the Dutch O 21-class submarines).[4]
  • English Electric 7SKM diesel engine (used in some Port Jackson & Manly Steamship Company ferries)

Land use

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The AGCO Sisu 98HD is a straight-seven diesel engine that was released in 2008.[5] Intended for farming machinery, the engine shares various components with the company's straight-six engine.[6]

References

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  1. ↑ "Wärtsilä RT-flex 82T".
  2. ↑ "Wärtsilä 32".
  3. ↑ "MAN Diesel Marine Engine IMO Tier I Programme". Archived from the original on 2011-03-10. Retrieved 2011-03-07.
  4. ↑ Cummins, C. Lyle Jr. (2007). Diesels for the First Stealth Weapon. Carnot Press. p. 405,464. ISBN 978-0-917308-06-2.
  5. ↑ "7-Cylinder - AGCO Sisu Power". Archived from the original on 7 July 2011.
  6. ↑ "AGCO SISU POWER launched new innovative 7-cylinder 9,8 litre engine". 10 September 2008. Archived from the original on 4 March 2016.