Nozzle Alfa Romeo NVD26A2 parts of injector nozzle

JUN GAO

Engines:FORD

Brand:DICSCL PARCS

Guarantee time: 6 month

Certificate:ISO9001 SGS 

Common rail engines have been used in marine and locomotive applications for some time. The Cooper-Bessemer GN-8 is an example of a hydraulically operated common rail diesel engine, also known as a modified common rail.

Vickers pioneered the use of common rail injection in submarine engines. Vickers engines with the common rail fuel system were first used in 1916 in the G-class submarines. It used four plunger pumps to deliver a pressure of up to 3,000 pounds per square inch every 90 degrees of rotation to keep the fuel pressure adequately constant in the rail. Fuel delivery to individual cylinders could be shut off via valves in the injector lines.Doxford Engines used a common rail system in their opposed-piston marine engines from 1921 to 1980, where a multi-cylinder reciprocating fuel pump generated a pressure of approximately 600 bars with the fuel being stored in accumulator bottles.Pressure control was achieved by means of an adjustable pump discharge stroke and a "spill valve". Camshaft-operated mechanical timing valves were used to supply the spring-loaded Brice/CAV/Lucas injectors, which injected through the side of the cylinder into the chamber formed between the pistons. Early engines had a pair of timing cams, one for ahead running and one for astern. Later engines had two injectors per cylinder, and the final series of constant-pressure turbocharged engines were fitted with four injectors per cylinder. This system was used for the injection of both diesel oil and heavy fuel oil. 
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