Straight-three engine

The Inline-three engine or Straight-three is an internal combustion engine with three cylinders. The cylinders are positioned in a straight line along one crankshaft. It can be powered by different types of fuels, including gasoline, diesel, and natural gas.

Inline threes are used in cars less often than inline fours. Due to generally smaller engine sizes, inline threes tend to use less fuel to operate and less resources to build.^[1]

Straight-three Engine Media

Engine block of an Elsbett straight-three diesel engine
Four-stroke straight-three engine with firing order 1-3-2
Circa-1960 Saab two-stroke engine
2010 Suzuki K10B engine
1969–1975 Kawasaki H1 Mach III
2004–present Triumph Rocket III engine
1940s Fairbanks-Morse straight-three diesel engine

References

↑ 3 Cylinder Engines Vs 4 Cylinder Engines: Meaning, Pros & Cons (in en-IN). Digit Insurance. Retrieved 2025-07-11.

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[1] 3 Cylinder Engines Vs 4 Cylinder Engines: Meaning, Pros & Cons (in en-IN). Digit Insurance. Retrieved 2025-07-11.

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