The thought occured to me that may be the cetane rating of fuel would change the optium time of the injection event higher cetane, later injection and lower cetane earlier injection event or may be it does not work like that... any one have an opinion on this?
J

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46 WDX Power Wagon

84 300TDT daily driver

How could higher cetane change timing of when an injector pops, or even upon combustion?

In my opinion, I would doubt such a possibility, but elaborate more, maybe there is something to what you say!

You misunderstand. A fuel of a certain cetane rating will have an optimum injection time - I suspect biodiesel will perform better when injected sooner because of it's higher cetane.

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'83 240D with 617.952 and 2.88
'01 VW Beetle TDI
'05 Jeep Liberty CRD
'89 Toyota 4x4, needs 2L-T
'78 280Z with L28ET - 12.86@110
Oil Burner Kartel #35

http://i16.photobucket.com/albums/b1...oD/bioclip.jpg

I Thought that a Higher cetane # would combust more easily thus not needing as much of advance?

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46 WDX Power Wagon

84 300TDT daily driver

I see the point and would now also wonder the same question as the original poster does.

Yeah, I could have it backwards.

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'83 240D with 617.952 and 2.88
'01 VW Beetle TDI
'05 Jeep Liberty CRD
'89 Toyota 4x4, needs 2L-T
'78 280Z with L28ET - 12.86@110
Oil Burner Kartel #35

http://i16.photobucket.com/albums/b1...oD/bioclip.jpg

i know nothing ...but it seems that timing has to do with combustion speed. i dont know what higher cetane does though to speed of combustion. on a gas engine higher octane does allow more timng advance, so if cetane does the same it may follow.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.