The video mentions the FCU determines air flow based on a throttle position sensor. Is that right, or does the FCU meter fuel directly from measured air flow?
So when a cylinder has the intake valve closed, fuel is still sprayed into the intake manifold? Building/vaporizing before getting drawn into the cylinder?
Correct. This system is not much better than a carburettor. It's running 100% duty cycle which causes worse atomisation. What he calls a distributor is actually just a 1to 4 junction box. There was mechanical injection much more advanced than this used in Europe.
Unless you have wideband 02 sensors on each exhaust primary, to monitor AFRs at each combustion event, and then a means to adjust to balance it’s a guess
@@dansid appreciate the response. I’m looking into adding either individual cylinder O2 sensors or egt sensors to aid in my tuning of a 10:1 carbed V8 in my Bronco. Currently run a single wideband at collector where all primaries meet, but I could be washing down some cylinders and leaning out others while reading 12.8 at wide open and 14.5 cruising…
@@WesternReloader I believe O2 sensors to be more reliable for fine tuning because engine venting also interferes with EGT reading in aircraft, but most of their engines are air cooled.
ok. Thanks for the explanation. My next question is what happens when engine speed increases to about 70Km/h , do all the nozzle still remain open to receive fuel?
Im studying to get my A&P right now and we are on this subject in class. Why in the hell am I paying 40k to get my A&P at this school when I can watch videos like this, have a better understanding of the subject matter, take all 3 of the F@#!king test, pass them and move on with out the debt....more qualified teachers, better learning environment, cheaper. I learned more from youtube than any of my teachers could ever give me....Im kinda piss
i have carefully listened to your explanation, and its quite good, but my question is how does the FCU fuel control unit sense the amount of air during idle state of the engine
From what I know, idle does not mean ZERO air is entering the cylinders. Idle simply means a very little amount of air but not none. So you can say that if 'idle' ever meant zero air, the engine would then stop running immediately because it couldn't ignite the fuel being injected. So from that we know that there is an amount of air to be sensed. I hope this answered your question! If you mean the 'mechanics' of it then I honestly do not know, I hope someone knowledgeable clarifies it for both of us!
Corboretr take a some heavy feuel..... injector system....give you a ...good feuel efesanse.but not a reliable...a ... loading vehicles... corboretr take a loading ...but ... injector is not good....only a.... marketplace take over a ...old system....lot of vehicles use a corboretr base engine.... manufacturer....is ... designed a ..new systems...in mind.teking a money...
Bookmarking this to watch later for my commercial checkride! So helpful
checked several books couldn't figure out where exactly the air mixes with fuel. so much clear now! thank you!
You are welcome!
One of the best explanation on these engine types, thank you.
Thank you so much, I really needed this help for my test coming up.
Been flying turbines for years; this is a great review. Thanks!
great video! Very simply explained, Thank you
You are welcome!
Aaron! you are such a great speaker... Bravo!!!
Damn bro! Excellent and brilliant explanation. Goodness me
This was very helpful, thank you!
The video mentions the FCU determines air flow based on a throttle position sensor. Is that right, or does the FCU meter fuel directly from measured air flow?
So when a cylinder has the intake valve closed, fuel is still sprayed into the intake manifold? Building/vaporizing before getting drawn into the cylinder?
Correct. This system is not much better than a carburettor. It's running 100% duty cycle which causes worse atomisation. What he calls a distributor is actually just a 1to 4 junction box. There was mechanical injection much more advanced than this used in Europe.
such a great explanation! thank you
What does a fuel pump switch do?
Because it’s turned off in cruise so that means the engine runs without it.
Thanks a lot, used it for my grade II instructor prep!!!
So do all turbine engines i.e. turboprops use a fuel injection system right?
Amazing explanation. Thank you.
What is the mixture control knob connected too?
Unless you have wideband 02 sensors on each exhaust primary, to monitor AFRs at each combustion event, and then a means to adjust to balance it’s a guess
airplanes usually have exhaust gas temperature indicators, single unit or one in each cylinder, which allows inference of lean/rich mixture
@@dansid can EGT sensors be monitored like O2 sensors for tuning for carbed applications when no ecu exists?
@@WesternReloader this is done in flight, in heights where the lack of oxygen messes up with the ground tuning
@@dansid appreciate the response. I’m looking into adding either individual cylinder O2 sensors or egt sensors to aid in my tuning of a 10:1 carbed V8 in my Bronco. Currently run a single wideband at collector where all primaries meet, but I could be washing down some cylinders and leaning out others while reading 12.8 at wide open and 14.5 cruising…
@@WesternReloader I believe O2 sensors to be more reliable for fine tuning because engine venting also interferes with EGT reading in aircraft, but most of their engines are air cooled.
ok. Thanks for the explanation. My next question is what happens when engine speed increases to about 70Km/h , do all the nozzle still remain open to receive fuel?
Very nice explanation 😊😊😊
This is really great explanation.. Thanx
Im studying to get my A&P right now and we are on this subject in class. Why in the hell am I paying 40k to get my A&P at this school when I can watch videos like this, have a better understanding of the subject matter, take all 3 of the F@#!king test, pass them and move on with out the debt....more qualified teachers, better learning environment, cheaper. I learned more from youtube than any of my teachers could ever give me....Im kinda piss
Well done. Great explanation!
Great explanation. Thanks!
You're welcome!
So this system eliminate magnetos?
i have carefully listened to your explanation, and its quite good, but my question is how does the FCU fuel control unit sense the amount of air during idle state of the engine
From what I know, idle does not mean ZERO air is entering the cylinders. Idle simply means a very little amount of air but not none. So you can say that if 'idle' ever meant zero air, the engine would then stop running immediately because it couldn't ignite the fuel being injected. So from that we know that there is an amount of air to be sensed. I hope this answered your question!
If you mean the 'mechanics' of it then I honestly do not know, I hope someone knowledgeable clarifies it for both of us!
You did explain it simply. "If you can't explain it simply, you don't understand it well enough". Albert Einstein
Port or GDI?
great explanation . thank you
Great video
Glad you enjoyed it
Good explanation.
No words 🙏🏾
Amazing 😉 I could learn more about fuel injection ... I am thrilled to join them in 2019
Thank you very much sir
Excellent!!! thank you
Glad you liked it!
So helpful. Thanks
Excellent. Thank you
thanks
NICE!!
Thank youu
Corboretr take a some heavy feuel..... injector system....give you a ...good feuel efesanse.but not a reliable...a ... loading vehicles... corboretr take a loading ...but ... injector is not good....only a.... marketplace take over a ...old system....lot of vehicles use a corboretr base engine.... manufacturer....is ... designed a ..new systems...in mind.teking a money...
This comment gives me dyslexia
@@thebrownpilot6969 lmao