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A hydraulic cylinder is the actuator or "motor" side of this system. The "generator" side of the hydraulic system is the hydraulic pump which delivers a fixed or regulated flow of oil to the hydraulic cylinder, to move the piston. There are three types of pump widely used: hydraulic hand pump, hydraulic air pump, and hydraulic electric pump.
Each cylinder is of 645 cubic inches (10.57 L) displacement, hence the name; with a bore of 9 + 1 ⁄ 16 inches (230 mm), a stroke of 10 inches (254 mm) and a compression ratio of 14.5:1. The engine is a uniflow design with four poppet -type exhaust valves in the cylinder head and charge air scavenging ports within the sides of the cylinders.
In the 1990s, Sri Lanka Railways converted the 2 ft 6 in (762 mm) narrow gauge Kelani Valley line into 5 ft 6 in (1,676 mm) broad gauge. This was the last narrow gauge line left in Sri Lanka, and its conversion to broad gauge put the fleet of narrow gauge locomotives out of use. All operational locomotives in the country today are broad gauge.
In the single-piston designs, the engine captures the heat lost from the four-stroke Otto cycle or Diesel cycle and uses it to drive an additional power and exhaust stroke of the piston in the same cylinder in an attempt to improve fuel efficiency and assist with engine cooling. The pistons in this type of six-stroke engine go up and down three ...
Turbocharged two-stroke diesel straight engine, 6 to 14 cylinders: Bore: 960 mm (38 in) Stroke: 2,500 mm (8.2 ft) Displacement: 1,828.7 litres (111,597 CI) per cylinder: Engine speed: 15–102 RPM [3] Mean effective pressure: 1.96 MPa @ full load, 1.37 MPa @ maximum efficiency (85% load) Mean piston speed: 8.5 meters per second: Brake specific ...
Sri Lanka Railways M6 is a class of Diesel-electric locomotives imported to Sri Lanka in 1979. Most of these locomotives are still in active service with Sri Lanka Railways , the national rail operator.
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