🛠 Throttle Pump aka Transient Throttle Enrichment Explained | TECHNICALLY SPEAKING
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- เผยแพร่เมื่อ 31 พ.ค. 2024
- #haltech #throttlepump #enginetuning
In this video we unravel one of the mysteries of tuning; the often talked about but rarely understood dark art of tuning the Throttle Pump, or as we call it here at Haltech - the Transient Throttle Enrichment function.
Have you ever driven a car that runs fairly well under steady-state conditions, but when you mash the throttle quickly the engine coughs a splutters before eventually taking off again. The most likely explanation for that happening is the incorrect setup of - yes you've guessed it - the Transient Throttle Enrichment.
...
shortcuts:
00:00 intro
01:10 What is Throttle Pump
03:10 Why do we get the "Lean Spot" when we stab the throttle
05:00 How Throttle Pump works in EFI systems
07:30 Software walk-through starts here
08:50 Throttle Position
09:15 Load Rate Dead Band
10:36 Load Acceleration Dead Band
11;10 Detect Duration
11:30 Ignition Correction Dead Time
11:48 Sync vs Async
14:15 Enrichment Rate Maps
16:45 Ignition Correction Maps
21:00 GIVE-AWAY!!!!
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Every time u guys put up a vid i end up with more questions then i started with lol but it always helps keep them coming
Hopefully the next video always answers at least some of them! But it's true - you never stop learning.
Matt has a gift for explaining things. When I see him on the thumbnail, I know I have a very good chance of understanding the topic(s). 👍
Matt brought up a great point about injection angle! Any chance of a video on that subject?
Synchronous is extending the programmed injector pulse, asynchronous is immediately pulsing all of the injectors at once. Both of which can be combined (which is pretty cool.)
I hope to be even half as smart as you are on tuning/etc. I don’t even understand why you would want that in the tune the asynchronous I mean, I thought each injector has a small window of time to open, but now it just makes me think🤣😂
@@bryarhattabaugh7313 You can spray the injector at any time... though you normally get best results just before intake valve opening/same time.
Have you ever driven a car that runs fairly well under steady-state conditions, but when you mash the throttle quickly the engine coughs a splutters before eventually taking off again. The most likely explanation for that happening is the incorrect setup of the Transient Throttle Enrichment (also known as Throttle Pump). And that's the subject of today's video.
..
shortcuts:
00:00 intro
01:10 What is Throttle Pump
03:10 Why do we get the "Lean Spot" when we stab the throttle
05:00 How Throttle Pump works in EFI systems
07:30 Software walk-through starts here
08:50 Throttle Position
09:15 Load Rate Dead Band
10:36 Load Acceleration Dead Band
11;10 Detect Duration
11:30 Ignition Correction Dead Time
11:48 Sync vs Async
14:15 Enrichment Rate Maps
16:45 Ignition Correction Maps
21:00 GIVE-AWAY!!!!
-----------------------------------------------------------
Recommended viewing:
How Widebands Work: th-cam.com/video/SE4S6qGVzC4/w-d-xo.html
How Self-Tuning Works: th-cam.com/video/b_ly9YZodxw/w-d-xo.html
How Dyno Tuning Works: th-cam.com/video/rkcYDrwaJBg/w-d-xo.html
AFR vs Ignition Timing: th-cam.com/video/aDSZhy551bo/w-d-xo.html
Would it be possible to have an adaptive e-throttle, slowing down the blade-movement under the mentioned contitions, airtemp, RPM ... instead of using any enrichment, when shooting for best emmisions in all cases?
Do direct-injected cars need throttle-enrichment at all?
Time to copy and paste a few features from Adaptronic Modular to ESP and/or NSP
1. Fuel Injector Selector with correctly tested and calibrated injectors on a haltech injector drivers.
2. Fuel film model (Thankyou Dr. Jim Cowart)
Thanks Matt, well explained with Async
Very useful explanation, thank you. I’m in U.K. and I have a different type of ECU with a similar function under different terminology (Emerald K6+), but the information here has helped me understand how to use it.
One of the best descriptions of transient throttle I have heard!
Finally a straight forward video I was looking for!
Very funny emoji explanation on the carburetor fuel getting late to the party
Loving these more technical in depth videos. Keep them coming!
Loving the new sketch diagrams and cartoons. Funny, but also helps visualise things.
Such a quality video. Thank you for publishing this
The way matt formulate and describes the info is an example of great teaching. i am impressed and to all that helped make the video Thanks.
I want a championship winning map !
The sad bit for me i feel like i am going spent forever getting screwed over by tuners that dont actually know what they are doing !
It had to have taken a while to script all this and make it come across this cleanly. Great video!
It did. Glad you've enjoyed it:)
Thanks for this, it has given me a much better understanding on this topic.
I was going to ask you guys about this stuff last week. So glad you did an updated video, this was very informative in addition to the info in NSP.
Owning 3 older vehicles running carbs, I find your carb info very useful. Would love more videos covering older vehicles specifically.
Awesome video, as many people do not understand the fundamentals of transient enrichment, and it can make or break drivability IMO!
Hell yeah! New video! Keep em coming!
Can you do an injection timing video to build off this video? Love the longer technical videos!
Great timing!
I've been trying to sort my accel enrichment today....
That artwork makes my little brain happy
Love these technical videos, keep up the great work. " syncronous extends programmed injector time, async immediately pulses the injectors "
Congratulations! You've WON a prize! Send your contact details to joshua.lal@haltech.com
Put "Throttle Pump Comp" as the email subject. 🙂
Had no idea this was a thing, love the videos guys.
It is like you are looking over my shoulder!, first I started with autotune, and you put up a video on that, yesterday I was wondering if I needed to use the transient throttle function and wat that would be doing, and again there is the answer on youtube! Great work!, thanks !
That is really interesting! Loving this series!
Also really interested in learning about injection timing. I find this topic is not often spoken about.
Thanks guys !
These are great! I think it would help to draw a graph of the inputs to show what's actually happening. It's a great explanation, but for me, some times it helps to see what's happening in relation to the input, this case throttle position.
Sync is timed, async is a fuel dump.
Nice video guys.
Does any of this apply to direct injection?
Love these vids keep m up
A video on tuning injection timing would be great...
"Synchronous extends normal injection events. Asynchronous adds immediate events."
Congratulations! You've WON a prize! Send your contact details to joshua.lal@haltech.com
Put "Throttle Pump Comp" as the email subject. 🙂
Synchronous is when then pulse of the next injector to be fired is extended, usually used in a sequential injection setup. Asynchronous is when all injectors are fired immediately for an extended pulse when the throttle is stabbed.
Synchronous is when you extend the next injector cycle and Asynchronous is when you add fuel right away
On a Batch Fire only Fuel system, should the Sync Table be zero'd out and only Async used ? Does Sync enrichment have any effect at all on a Batch Fire system?
Surprised: 'Fuel Film Modelling' didn't make it into NSP. I really like that way to tune transient throttle conditions that way on the Adaptronic line of ECU's.
Andy's PRI talk for a few years back tackled this topic from a very different angle.
At the end of the day, if the engine runs right. Doesn't matter what magic is used behind the curtain to get the result😁👍
Matt, with dbw throttle body, is it still tps vs map setting?
Can you please explain how do you posses the powers of telepathy? Just started my brand new engine and starts and runs perfectly but as soon as I stab the throttle it dies. I take it really gently, like 1 2 3 % tps accelerates fine, more, dies. I love you guys! 😍
Nice One!!! But what about "Disenrich"?
Synch timed to individual valve opening, Async timed by foot.
Yes
will a bigger injector help in tuning it easier?
I drove an old farm truck once. Between having a hard time finding the gears in the old 3 speed and the accelerator pump not working, I looked worse than a complete novice to driving a manual car.
Asynchronous injection is when you download car memes faster than you upload them.
I know the diesels work differently(you step on the fuel not air), but I have a similar experience under certain conditions. I notice if I back off the throttle for a split second and hit it again the engine pulls way harder. Would this be the same thing?
I see this happen on both gas and diesel engines. This is an over simplification of what I am trying to explain but hopefully enough.
For Enrich Rate..is " Transient Throttle Enrichment Load " the same thing as " TPS Position " ?
So Asynchronous on for Rotarys?
As an apprentice in the early 90s it was called an accelerator plunger
I've tuned my acceleration enrichment by revving the engine while parked, but i haven't tuned it with a load yet. it sound like a lion roaring and revs crisp
Sometimes when I shift a gear and it's not perfectly smooth my engine will kinda stutter for a bit before getting ahold of itself. With the clutch fully engaged, it takes a bit before I can really start to accelerate. The clutch isn't slipping, the engine just isn't making any power.
Does this video correlate to the problem I'm seeing?
Edit: when I go from 0 to 100% thorttle whilst in gear the engine responds as expected. This only happens when changing gears. The throttle is driven by cable. Not electric
We need a video for Nexus torque mangament please @haltech
Synchronous extends planned injection events
Asynchronous adds batch injection events
Synchronous Injection waits until the next sequentional injection time to spray the transient enrichment. The asynchronous just sprays immediately.
It seems like haltech reads minds sometimes lol
Oh a carb . Something I understand.
That's why I'll get someone else to set up my na m52b28 BMW.
Here i am again, 2 years later to ask a question on this topic.
You're supposed to tune the acceleration Enrichment after you tune the VE table... How do you know when you have the VE table tuned well enough to start working on the AE? Is it when you no longer have a stumble on tip-in anywhere in the VE table?
Thanks guys💪🏆
That sounds like a question for our tech support team. You can reach them via www.haltech.com/contact-us
They'll be happy to help out :)
@@haltech a video with Tuning Fork explaining this is preferred 💪🏆
I just want to know why would anyone put a thumb down on a video like this ?
Sequential fires injectors during a timed event. Asynchronous is immediately.
That was hard to do in 10 words or less. 🙃
Congratulations! You've WON a prize! Send your contact details to joshua.lal@haltech.com
Put "Throttle Pump Comp" as the email subject. 🙂
@@haltech 🎉
A little annoyed that you're not using the Elite software; but most can be figured out;...if you very familiar with Elite SW.
Synchonous add fuel on next inyector cicle! Asynchronous increase pulse fast on all inyectors...
Lean spot is super exaggerated when on individual throttles
The 2 dislikes are from people who use Fueltech....
did I miss the disenrich portion
Not gonna win but...
a sync, all injectors go now!
sync, one by one
Did he say “coughs harder than a COVID ward in winter?” 😂🤣🤣😂
The difference is whether you are revving the engine at the local Micky Ds to impress the local law enforcement or rolling a burnout out of the local Micky Ds to impress the ladies.
You can message me to get my shipping info for the gloves, thanks 🤘🏼😁 🤘🏼
Async= instant fuel
Sync=longer next injection cycle
A video title that explains my girlfriend.
"The higher the engine rpm is to start with, the less additional fuel is required".... Your additional details on haltech ESP says it backwards!
Fire all the injectors at once or individually next cycle
I feel like this video provided nothing. We need a practical example.