Straight-seven engine
A straight-seven engine or 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.
Straight-seven engine with firing order 1-3-5-7-2-4-6
Marine engines
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]
Land use
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
- "Wärtsilä RT-flex 82T".
- "Wärtsilä 32".
- "MAN Diesel Marine Engine IMO Tier I Programme". Archived from the original on 2011-03-10. Retrieved 2011-03-07.
- Cummins, C. Lyle, Jr. (2007). Diesels for the First Stealth Weapon. Carnot Press. p. 405,464. ISBN 978-0-917308-06-2.
{{cite book}}: CS1 maint: multiple names: authors list (link) - "7-Cylinder - AGCO Sisu Power". Archived from the original on 7 July 2011.
- "AGCO SISU POWER launched new innovative 7-cylinder 9,8 litre engine". 10 September 2008. Archived from the original on 4 March 2016.
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