Tuning Drive by Wire Throttle Control
ฝัง
- เผยแพร่เมื่อ 18 ต.ค. 2022
- DBW or E-Throttle is common on most late model production engines and we’re seeing more and more aftermarket ECUs adopt this technology.
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There's a reason why OE manufacturers have moved to drive-by wire throttle and we're seeing very very few cars come out these days that still run a conventional cable throttle making throttle tuning more and more commonplace right from the lower tiers of motorsport. One of the biggest advantages is, with complete control over the actual opening of the throttle body at the engine this gives the manufacturers a lot of control over the torque delivery of the engine.
For us in the aftermarket, this gives us the opportunity to run multiple throttle maps, perhaps for driving on a wet track or in order to maintain traction in a turbocharge RWD application on when pushing out of corners or even just for launch control.
In this members webinar lesson '138 | Tuning Drive by Wire Throttle Control' we’ll discuss the technology, look at what is required from your ECU to control a DBW system, look at the configuration and testing, and finally discuss some techniques we can use to optimise torque delivery using DBW throttle mapping.
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#highperformanceacademy #dbw #ethrottle #freelesson #throttlemap #throttle #idlespeed #tuning #learntotune #enginebuilding101 #dontletthesmokeout #wiring101 #dieseltuning #datanerd #gofasterwithdata #racecraft #learndriveoptimise #motorsports - ยานยนต์และพาหนะ
You can actually get really good PID figures using one of matlab's fairly recent applets. It takes in the step responce (so from no power to all the power, see what happens) and works its magic to get you 99% there. I believe they also do a fair bit of SIL stuff that can automate the final tuning process and get you the exact responce you want, so you don't have to manually fiddle with it.
Not sure how that would perform accounting for adverse conditions though 🤔
What you said about throttle cables sticking reminded me of seeing an unlimited hydroplane that had a cable the driver could pull to disconnect the cable from the throttle.
Nothing is infallible and many things are always finding new ways to catch us out 😂- Taz.
Nice and useful video.
Haltech DBW calibration wizard looks great.
Great video Andre and HPA team. I recently saw another TH-camr Dyno tune a Kawasaki H2 supercharged motorcycle back when it was new. He develops performance parts for these types of bikes. While on the dyno, you can see the throttle body smoothly modulate to 100% open even tho he demanded 100% to start the run. Interestingly, once the bike started getting to the higher RPMs, the bike started closing the throttle, killing power, before it was anywhere near the redline. They flashed the ECU to give 100% throttle in the areas where it was closing and the bike picked up like 80whp. Crazy computers😆 - Pantyeatr1
Interesting. Traction control or anti-wheelie tables in the background or just the usual 'lazy' DBW factory control that makes us all generally underestimate them? - Taz.
@@hpa101 it's hard at say, but you can clearly see what the bike was doing on the dyno screen. The bike was backing out way before redline and cutting the HP by at least 30hp.
All about emissions restrictions. Power,noise you name Government bodies require different restrictions per countries.
Great video, such a solid channel. Thanks guys 💪🏻
Cheers mate, appreciate that! - Taz.
I never realised just how powerful the Haltech elite is. The customer axis tabling is Motorsport level stuff! I want one now...
Many other brands do it mate, it's not that special now
@@sexyfacenation any examples? I am hunting for a new ECU but the haltech is not cheap...
@@ApolloBSG Link definitely do it.
Informational as always
What compute architecture do you guys use in your ECUs?
Is there setting for recommend frequency with say a gm gold blade throttle body I know with the aem infinity there are setting and presets for different throttle body's I had always considered what was the default setting to be to slow and the setting from the presets you could actually hear the dc motor hum with the engine off ignition on
Quick question. Do you happen to know where in tunerpro you can change from dbw to dbc? I been looking and can't seem to find it anywhere. Thanks
After doing a burn out my car will sometimes stall. Would increasing the close damping reduce the chance of stalling after doing a burnout?
I would imagine an ITB engine would likely make more low rpm torque at partial opening due to the big throttle area and potential of better swirl/tumble/ and port velocity all those things are a more important at low RPM .. Hey Andre why haven't you updated this ECU to run the NSP firmware and software ??
Great video Andre! One correction though, you mentioned in cable throttle scenario there's nothing ecu can do to remedy the stuck blade scenario, this is not true as if theres both tps and pedal sensors employed the ecu will know if the cross-check fails and there are ofcourse other methods of torque reduction in that scenario :)
At that point, why not use DBW if you are going to install everything required for it? The only legit reason I can think off for cable throttle is for the feel, kinda like how cable clutch has a unique feel.
@@patx35 personally I would go for dbw for sure, but you might be limited by class rules to run cable for example.
The NSP software appears to be missing the APP to TPS Calibration curve option. Looks like the only way to do it is to manually change numbers in the Pedal to Throttle map. Anybody know of a way to access the APP to TPS Calibration curve?
I have a k24 swapped Scion frs with a haltech elite 1500 ecu. While cruising if I am at very little throttle pedal input around 10-14 percent or so maybe lower and the car will buck as if the throttle body blade is snapping shut. I have the stock FA20 throttle body wires to the ecu and this is the only problem I have with the DBW and I can’t track down which setting might be causing this.
Datalog tps when the condition is happening. If it's not moving then I could guess it's hitting engine protection or a severely rich portion of the map
@@ReubenHorner I don’t have any engine protection set up on the ecu and I’ve data logged it before and the AFR is perfect. That’s why it’s been such a problem to track down
Fuel or spark cuts?
works great on bmws if you know hat you are doing 🙃😊
Why did you have to mention blinking!!!! All I could see after that was you blinking 🤣🤣🤣🤣
Having issues can't set idle control on dbw lol when I put to closed loop idle is static at 900 doesn't move but when it's in open loop it starts at 1200 slowly lowers to 1000 not sure what I've got wrong
Why I'm here now lol but doesn't go into that much detail
Are you an HPA member? Post this up on a forum with a bit more information: www.hpacademy.com/forum - Taz.
Thanks for reply I'm only a bronze member lol I'll upgrade if there are people that know the haltech inside out
Do you guys need a log or just screen shots
You should be able to get 1 month for free if you haven't already claimed it. I think it pops up with you try to watch a webinar but don't have Gold Membership: www.hpacademy.com/previous-webinars/
If you want 100% Haltech feedback from 100% Haltech people, the Haltech forums are your best bet as while Andre has used the platform for years and knows Haltech well I can't guarantee it will just look at your log and point out your issue in 2 seconds. Sadly it doesn't always work like that with these things.
That said, sometimes that is also exactly how it works 😂
A log and your map file would be best. The more info you can give people with things like this the easier it is to actually help rather than just take guesses - Taz.
Limp mode should be illegal.
Of coarse it wouldn't be science otherwise.
Drive by wire is sketchy and will never be as reliable as a simple mechanical setup.
Are you stating as fact that a cable throttle has never jammed or failed and can never, ever, EVER, jam or fail? That's a strong statement.
Not sure I'd say that about DBW OR cable throttles personally, but DBW is hardly 'sketchy' 😎 - Taz.
PS: You might enjoy (or hate, but hopefully enjoy!) this: www.hpacademy.com/blog/drive-by-wire-dbw-systems-are-trying-to-kill-you-but-not-really/? - Taz.
cable can never be as good as DBW when you know how to set it up on an elite series
@@adrianask9519Define "good".
It takes more skill to effectively handle a cable throttle, but it pays dividends.