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One notable reciprocating engine from the World War II era was the 28-cylinder, 3,500 hp (2,600 kW) Pratt & Whitney R-4360 Wasp Major radial engine. It powered the last generation of large piston-engined planes before jet engines and turboprops took over from 1944 onward.
The engine is the largest reciprocating engine in the world. The 14-cylinder version first entered commercial service in September 2006 aboard the Emma Mærsk. The design is similar to the older RTA96C engine, but with common rail technology (in place of traditional camshaft, chain gear, fuel pump and hydraulic actuator systems).
A single-acting cylinder in a reciprocating engine is a cylinder in which the working fluid acts on one side of the piston only. A single-acting cylinder relies on the load, springs, other cylinders, or the momentum of a flywheel, to push the piston back in the other direction. Single-acting cylinders are found in most kinds of reciprocating ...
GE 7FDL-12, 12-cylinder engine used in locomotives, such as the GE P32AC-DM [2] GE 7FDL-16, 16-cylinder engine used in locomotives, such as the GE AC4400CW [3] GEVO series (bore 250mm, stroke 320mm [4]) GE GEVO-6, 6-cylinder engine used in locomotive repower/modernization applications [5]
Radial engine in a biplane. The radial engine is a reciprocating type internal combustion engine configuration in which the cylinders "radiate" outward from a central crankcase like the spokes of a wheel. It resembles a stylized star when viewed from the front, and is called a "star engine" in some other languages.
A reciprocating imbalance is caused when the linear motion of a component (such as a piston) is not cancelled out by another component moving with equal momentum, but opposite in direction on the same plane. Types of reciprocating phase imbalance are: Mismatch in counter-moving pistons, such as in a single-cylinder engine or an inline-three engine.
A simple engine is an engine that operates with single expansion of steam, regardless of the number of cylinders fitted to the engine. Up until about the mid-19th century, most ships had engines with only one cylinder, although some vessels had multiple cylinder simple engines, and/or more than one engine.
The Double Wasp was more powerful than the world's only other modern 18-cylinder engine, the Gnome-Rhône 18L of 3,442 cu in (56.40 L). [nb 1] The Double Wasp was much smaller in displacement than either of the other 18-cylinder designs, and heat dissipation was a greater problem.