Vapor injection on older motor

Propane, Butane, LPG, GPL, C3H8, C4H10
fpvmustang
Posts: 33
Joined: Thu May 05, 2016 3:28 pm
Location: Quincy Ca. USA

Re: Vapor injection on older motor

Post by fpvmustang »

kuchen you could post your correction tables. would give OP a jump on his tune.
My tables are garbage i went to beta code then was re tuning them.

I use my wide band during warm up. 30 sec after start but coldest we get is around 10F
and I can switch to gasoline with a flip of the switch. that's saved me more then once.
when solenoid valve built up magnetic particles and wouldn't open all the way.

kuchen
Posts: 79
Joined: Tue Oct 25, 2011 12:38 pm
Location: Stuttgart/Germany

Re: Vapor injection on older motor

Post by kuchen »

Well, no Petrol system left in my ride, so the MS CNG just has to be reliable.
Not sure what you mean by correction tables. I am not using tables as Ms2 has no memory left for additional lookup tables. I just programmed 5 lines of code that does the trick according to the physical equations posted earlier (to be precise, a first degree Taylor approximation, error <1%, Microcontroller do not like Sqrt). If I understand you correctly the MS3 provides fuel pressure and temperature correction tables. If this is so, It should be no problem to compute them with the given equations.

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