CRDe stands for common rail diesel injection,one of the types of fuel injection. they allow for controlling injection timing ,injection pressure and injection quantity independently and decreases engine noise significantly.
Denso developed the first CRDe in 1995 and since then it has been supplying it to many companies. They are being used to meet the EURO 4 emission rules.
A high-pressure pump increases the fuel pressure in the accumulator up to 1,600 bar or 23,200 PSI. The pressure is set by the engine control unit and is independent of the engine speed and quantity of fuel being injected into any of the cylinders. The fuel is then transferred through rigid pipes to the fuel injectors, which inject the correct amount of fuel into the combustion chambers.
Injectors are actuated by electronic diesel control . some use piezo crystals .
The electronic diesel control unit precisely meters the amount of fuel injected, and improves atomization of the fuel by controlling the injector pulsations. This results in quieter, more fuel efficient engines; cleaner operation; and more power output.
1 comments:
goutham i think CRDe shd be corrected to CRDI .why don u add some thing abt fuel cells. as its the challenge for engineers to design zero emission and more efficient system .
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