Not on a diesel it isn't.
Not on a diesel it isn't.
Turboman
Mab An Gov
How? A diesel runs an excess of air. How does something that senses airflow calculate fuel consumption?
Kadonkadonk1
Member
God knows, this is all what I'm trying to figure out a simple there's got to be a reason why it's there in the first place
bankz5152
Well-Known Member
@sierraferyAre you gonna share?
Cheers
From my own experience I have my MAF unlugged as when I hit the top end my '04 110 starts to kangaroo a little, cuts fuel and looses power. Unplugged MAF no issues, just goes and goes...
1988smithy
Well-Known Member
neilly
Well-Known Member
bankz5152
Well-Known Member
I was talking about the popcorn........
Cheers
Ahh just going to watch another "discussion" happen between wammers and sierra
Turboman
Mab An Gov
Ahh just going to watch another "discussion" happen between wammers and sierra
Bet you a whole large bucket of salted popcorn on Wammers!
Turboman
Mab An Gov
Salted! Im a sweet kinda guy!
No deal. I ate that already.
jamesmartin
Well-Known Member
From the manual
The MAP/IAT sensors are combined in one unit located in the inlet manifold. It provides pressure and temperature
information about the air in the inlet manifold to the ECM. The ECM compares the voltage signal to stored values
and compensates fuel delivery as necessary. The ECM uses the signal from the MAP/IAT sensor for the following
functions:
The MAF sensor is located in the intake system between the airfilterhousing and the turbocharger. The ECM
uses the information generated by the MAF sensor to control exhaust gas recirculation (EGR).,
you need to know what airs going in to know how much exhaust gas can be let in to inlet
The MAP/IAT sensors are combined in one unit located in the inlet manifold. It provides pressure and temperature
information about the air in the inlet manifold to the ECM. The ECM compares the voltage signal to stored values
and compensates fuel delivery as necessary. The ECM uses the signal from the MAP/IAT sensor for the following
functions:
The MAF sensor is located in the intake system between the airfilterhousing and the turbocharger. The ECM
uses the information generated by the MAF sensor to control exhaust gas recirculation (EGR).,
you need to know what airs going in to know how much exhaust gas can be let in to inlet
To measure airflow when EGR is active. The reduction in flow through the MAF when the EGR valve is opened tells the ECU how much exhaust gas is being ingested. The ECU then modulates the EGR valve to increase or decrease this amount to maintain a combustible air ratio just above that which is needed for clean burn. Simple if you understand how the EGR works, but not if you think the MAF on the diesel works the same way it does on a petrol engine. It simply doesn't, it has nothing at all to do with fuelling.
I am not getting into this stupid diatribe again. The MAF sensor air flow on a diesel does NOT control fuelling. Simple as that. Fuelling on a diesel is subject to throttle /power demand. The more fuel is injected the faster it runs the less fuel the slower it runs. The airflow through a MAF has nothing to do with it. There is always more air in the cylinders than is required for combustion. None receipt of expected signals can confuse the ECU.
Turboman
Mab An Gov
Old diesels didn't have MAF. And nor do some modern ones. None on the Kubotas on my boat. MAFs are just to do with emissions regs on vehicles.
Turboman
Mab An Gov
bankz5152
Well-Known Member
Fair enough, though you didnt answer my question. You cannot deny that TD5s do run differently whether or not the MAF is plugged in, EGR blanked or not.
