CommonRail - High pressure electronic diesel injection
- Aftermarket controllers:
- Technical papers:
http://www.vehicular.isy.liu.se/Publications/MSc/00_EX_3081_KA.pdf
Paper on the effect of timing and duration of main and pilot injection. Mainly conserning noise levels.
http://www.macchine.unisa.it/meca01/papers/MECA01_paper06.pdf
Modelling of a diesel engine common rail injection system
http://www.nt.ntnu.no/users/skoge/prost/proceedings/ifac2005/Fullpapers/04315.pdf
Achieving lower exhaust emissions and better performance in an HSDI diesel engine with multiple injections
http://www.tytlabs.co.jp/office/elibrary/ereview/rev373epdf/e373_009hotta.pdf
- Issues:
AFAIK there is no general aftermarket common rail diesel ECU available. This makes it impossible to use a common rail diesel in applications where the stoch ECU does not work. One popular application can be marinisation of car engines. Other uses might be; swapping car engines, tractors or gensets, or...
One critical thing would be timing for injection
- Timing:
pilot injection
~ -40degrees (2-4mm^3) Timing not critical. Optimal timing is dependant on load and revs.
Main injection
no load -2 - 4
part load -6 - 4
full load -15 - -6
duration 40-60 deg crank
5000 crank rpm = 5000 / 60 rps = 5000/60 * 360 degps = 33us/deg
average unexpected delay = 7us = 7/33 deg = 0.21deg
- Electrical Requirements:
Like voltage and current of injectors