Guest MATT Posted January 11, 2005 Report Posted January 11, 2005 I have heard a lot about common rail diesel just lately, but ime not exactly sure on what it is exactly?has it got something to do with Valves?Shafts?BOSCH?What?I Quote
Topbloke Posted January 11, 2005 Report Posted January 11, 2005 okay here comes the science bit , common rail diesels refer to (guess what) a rail full of diesel just the same as a petrol but at an incredible pressure approx 300 bar yup thats right, the fuel is lifted from the tank at a low pressure up to the filter then to a high pressure pump then on to the rail from there to the injectors which are electrically opened via an ecu (electronic control unit ) this gives lots of benefits, the higher pressure gives better atomisation of the fuel (very fine spray) and the pump is very quiet and allows precise ammounts off fuel to be injected giveing great economy, most of the noise from an older diesel (not common rail) is the pump building the pressure up to an high enough pressure to open the mechanical injector. The common rail refers to a rail that supplys fuel to all injectors instead of individual pipes from the pump. hope this helps Quote
GSMGuy Posted January 11, 2005 Report Posted January 11, 2005 But... Apparently the injection pressure of the PD 115 & 130 motors is as high or even higher than common rail! And I think the PD system is a little bit simpler too! Mike Quote
seatkid Posted January 11, 2005 Report Posted January 11, 2005 this article from diesel car explains it in simple english PDF file Personally I think CR will be the future. PD is cheap and cheerful but limited in potential.... Quote
Guest MATT Posted January 11, 2005 Report Posted January 11, 2005 Thanks, now i know, it all makes sense!Common Rail - check! :lol: Quote
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