ozzyboydeano
Well-Known Member
Are you having a laugh, it is quite possible i have forgotten more than you or the person who liked this post will ever know. Diesel engines CANNOT be fuelled subject to airflow through a MAF sensor it is not possible. The only thing that controls engine speed on a diesel is fuel quantity. More fuel more rpm less fuel lower rpm. That is how they work. As long as there is sufficient combustible air in the cylinder to service the rpm request air flow through a MAF is irrelevant. ONLY when EGR is operating does it become important.[/QUOTE]
maybe your mind is just stuck on the older type diesels
Last edited:
No it has a MAP of minima and maxima fuel needed to attain various rpm/power values written into it. When that rpm is requested it injects fuel to gain that speed as controlled by the CPS. If the engine is loaded at that rpm fuel will be increased to maintain it up to the maxima within that range. Then if the engine continues to be loaded beyond that power level either an higher throttle request would be needed or the box will change down a gear. It has nothing to do with airflow through a MAF sensor. You really don't have a bloody clue. If it did not have EGR it would not need a MAF sensor. And don't ask why export models don't have EGR but still have MAF sensor. That is because it is cheaper for Land rover to do it that way rather than producing a new ECU.
ozzyboydeano
Well-Known Member
so what controls the quantity the ECU of course
i think you have mixed results
yes a typical diesel engine does not need a throttle plate ..but some diesel engines do also work from an ECU[/QUOTE]
like i said your mind is stuck on older type diesel engines that dont have an ECU
so on the TD5 what controls the fuelling the engine or ECU ?
maybe your mind is just stuck on the older type diesels[/QUOTE]
Please don't insult my intelligence. IT IS NOT POSSIBLE TO FUEL DIESEL ENGINE SUBJECT TO AIRFLOW THROUGH A MAF SENSOR. Diesel engines DO NOT run based on stoichiometric mixture ratios as do petrol engines. The ONLY time they will get anywhere near doing that is when EGR is in operation. Even modern ones. You cannot change the basic requirements needed to run the engine, even on modern ones, it is not possible.
ozzyboydeano
Well-Known Member
wow just wow now your a guru i thought you once said the info in the net is bollocks so i call this bull **** as it appears i have no clue
this is why some models run a oxygen sensor located in the exhaust system its a feed back to the ecu
remember your injectors or connected to the ECU and regardless how hard the cam shaft hits them the ECU is the brain
ozzyboydeano
Well-Known Member
edit
Listen mate go away and learn a bit more before you talk to me, you are now getting boring. The first thing you said in reply when the MAF was brought up was "So i can throw away my MAP sensor then" or something like that. You are obviously an happy amateur with big ideas. Now you believe what yo want to believe no skin off my nose. At what point in post #63 was info from the net mentioned?
ozzyboydeano
Well-Known Member
now you listen bonny lad
i was being sarcastic .dont tell me your dumb that you never detected this... **** might as well throw my hole car in the bin then
you you also mentioned throw away the turbo as this is the only thing that allows oil to bleed
but forgot to mention the characteristics of the breathing system
then ask how does the EGR contaminate engine oil.... these sort of questions means.your the one who has no clue on the basics
however no skin of my nose either due to the fact the td5 isnt one of my first EGR deletes nor its going to be the last
as for looking at the web ..... i mentioned this as you had already said your not going to listen to me .... but apparently every thing on the the net is bollocks ..so now we have to believe a little **** ant like you that has very little experience in curtain areas
Last edited:
The OP said he had heard that oil and exhaust gas contamination ruined engines, so he disconnected the EGR. I said he may as well remove his turbo then because that is the cause of the oil contamination. It was a joke. Now stop being a prat and go away and learn how a diesel engine works, old ones modern ones it does not matter which they all work on the same principal. Fuel is injected into a compressed charge of air and combustion takes place. For any given RPM/manifold pressure there is ALWAYS the same amount of combustible air in the cylinder. The only thing that changes to make the engine go from idle to flat out is the amount of fuel injected. More fuel the engine revs faster less fuel it slows down. Air content is a constant other than when EGR is operating when combustible air and the airflow through the MAF may reduce by 50%. But the engine RPM will not drop and the fuel injected will not change.
ozzyboydeano
Well-Known Member
nah mate like i said you dont have to look far
3 posts into it look out for 2018 MOT
then you admit later you haven't read it **** off mate please
3 posts into it look out for 2018 MOT
then you admit later you haven't read it **** off mate please
No i said i had not read it fully. Are you mentally unstable?
sierrafery
Well-Known Member
I have to admit, i have a bad temper but i can't help myself , here's another official "bull****" from LR(beside the many others i've already presented in other threads):
you'll become smarter when you'll finally comprehend that
THE ECU/ECM IS NOT A DIESEL ENGINE, IT DOES WHAT IT WAS PROGRAMMED TO DO by those dumb engineers who built it and the engines with this kind of management will be happily throttled by the fuel caculated in that impossible way....not by air
you'll become smarter when you'll finally comprehend that
THE ECU/ECM IS NOT A DIESEL ENGINE, IT DOES WHAT IT WAS PROGRAMMED TO DO by those dumb engineers who built it and the engines with this kind of management will be happily throttled by the fuel caculated in that impossible way....not by air
Last edited:
I have to admit, i have a bad temper but i can't help myself , here's another official "bull****" from LR(beside the many i've already presented):
View attachment 142584
you'll become smarter when you'll finally comprehend that
THE ECU/ECM IS NOT A DIESEL ENGINE, IT DOES WHAT IT WAS PROGRAMMED TO DO and the engines with this kind of management will be happily throttled by the fuel caculated in that impossible way....not by air
Problem is i understand what the text framed in red is actually saying you don't.
Gazbo
Well-Known Member
So much edjumacayshun this early in the morning is giving me a headache, as long as the fu'ker starts when you turn the key what else matters?
No moves down here to have a "crack down" on pollution control devices....yet! At least not in the "sunshine state" but from experience, when the rest of the world farts, the goverments down this way always need to check their undies, so I guess the "purge" of the missing egr's will start later this year.
Glad I still own a bog standard 300tdi "S". Carry on regardless!
No moves down here to have a "crack down" on pollution control devices....yet! At least not in the "sunshine state" but from experience, when the rest of the world farts, the goverments down this way always need to check their undies, so I guess the "purge" of the missing egr's will start later this year.
Glad I still own a bog standard 300tdi "S". Carry on regardless!
sierrafery
Well-Known Member
wammers said:
Last edited:
ozzyboydeano
Well-Known Member
i think your forgetting little or no brains that older diesel engines some dont have an ECU and these where very simple to wind up the fuel via the VE fuel pump
for example the 200 tdi we can wind these pumps up so basically the injectors just dump in fuel of course the boost pin can also be adjusted for lower down fuel delivery
ever noticed some older diesel engines they pump out constant black heavy smoke while under loads this is unburnt fuel
on a diesel engine that has an ECU
the ECU has to take into account of all sensor readings .... the ECU tells the injectors of how much and when hence a diesel engine that has an ECU will have a cleaner burn
please ask me this question how come when a maf sensor fails some people notice a difference in power plenty of information on this forum use the search bar
ozzyboydeano
Well-Known Member
of course i am unstable i was born in england LOL
but obviously stable enough to understand
pick the bones out of this
I don't need to use any search bar if the MAF sensor gets a fault or fails it can cause the ECU to be confused due to lack of expected signals. But i will say again it is not possible to fuel a diesel engine subject to airflow through an MAF sensor. The engine is throttled by FUEL not by AIR. As long as there is sufficient combustible air in the cylinder to service any power/throttle demand flow through the MAF sensor is irrelevant.
