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Sulzer ZG9 was a pre-World War II
opposed-piston An opposed-piston engine is a piston engine in which each cylinder has a piston at both ends, and no cylinder head. Petrol and diesel opposed-piston engines have been used mostly in large-scale applications such as ships, military tanks, and f ...
two-stroke diesel engine A two-stroke diesel engine is an internal combustion engine that uses compression ignition, with a two-stroke combustion cycle. It was invented by Hugo Güldner in 1899.Mau (1984) p.7 In compression ignition, air is first compressed and heated; ...
by Sulzer. The engine was available with a choice of two, three and four cylinders (2ZG9, 3ZG9, 4ZG9); the two-cylinder version developed 120 bhp. It used a piston
scavenge pump A dry-sump system is a method to manage the lubricating motor oil in four-stroke and large two-stroke piston driven internal combustion engines. The dry-sump system uses two or more oil pumps and a separate oil reservoir, as opposed to a conve ...
. This was mounted vertically above one rocker, driven by a bellcrank from the main rockers. This engine is sometimes cited as an inspiration for the
Commer TS3 The Commer TS3 was a diesel engine fitted in Commer trucks built by the Rootes Group in the 1950s and 1960s. It was the first diesel engine used by the company. Development Rootes' intention for the engine was for it to fit under the QX "cab forwa ...
design.


Specification


See also

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Arrol-Johnston Arrol-Johnston (later known as Arrol-Aster) was an early Scottish manufacturer of automobiles, which operated from 1895 to 1931 and produced the first automobile manufactured in Britain. The company also developed the world's first "off-road" ve ...
- 1905 opposed piston petrol engine *
Commer TS3 The Commer TS3 was a diesel engine fitted in Commer trucks built by the Rootes Group in the 1950s and 1960s. It was the first diesel engine used by the company. Development Rootes' intention for the engine was for it to fit under the QX "cab forwa ...
*
Junkers Jumo 204 The Jumo 204 was an opposed-piston, inline, liquid-cooled 6-cylinder aircraft Diesel engine produced by the German manufacturer Junkers. It entered service in 1932. Later engines in the series, the Jumo 205, Jumo 206, Jumo 207 and Jumo 208, diffe ...
- an opposed-piston aircraft engine of the 1930s *
Napier Deltic The Napier Deltic engine is a British opposed-piston valveless, supercharged uniflow scavenged, two-stroke diesel engine used in marine and locomotive applications, designed and produced by D. Napier & Son. Unusually, the cylinders were disp ...
- large multi-bank engine, with crankshafts shared between cylinder banks.


References

{{reflist, colwidth=30em Opposed piston engines Two-stroke diesel engines Diesel engines by model