Technical JTD115 Multijets - how do they work?

[SillyBilly]

Hi
Still researching the engine swap.
What I need to know is how the Multijet system works.
Is it a case of having several jet holes instead of the single one on the unijet injector?
Is it a case of a single pulse to all the jet holes, or are there several pulses in each firing?
Would the ecu on a Multipla with unijet injection system just spray the same amount of fuel in through the multijet injector?

 

[matt8772]

Hi
Still researching the engine swap.
What I need to know is how the Multijet system works.
Is it a case of having several jet holes instead of the single one on the unijet injector?
Is it a case of a single pulse to all the jet holes, or are there several pulses in each firing?
Would the ecu on a Multipla with unijet injection system just spray the same amount of fuel in through the multijet injector?

as far as i can remember even the standard jtd engine has 5 holes.

think am M-Jet has 6.

there are different stages of firing, ive got a really bad memory (!) and i havent got my course notes handy but the 4 i can remember are pre,pilot,main,post.

im not sure you'd be able to even classify the injectors on a multijet into a standard 115 ecu. obviously ive never done it but its one of the problems i can foresee.

im sure other people on here may know more but i cant see it working really. guess im just used to being a main dealer tech though!