IMSA GTP 101: Brake By Wire and Brake Mapping

Рет қаралды 13,830

Жыл бұрын

The complexities of IMSA's new brake-by-wire systems on its hybrid GTP cars and the new electronically-controlled brake mapping concepts are explained in great detail by Honda Performance Development in RACER's latest GTP 101 tech video.
#imsa #gtp #rolex24 #24hoursofdaytona #marshallpruett #racermagazine
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Пікірлер: 45

@melsef Жыл бұрын

This whole series is incredible. It’s so strange to me seeing people on a race team getting excited to show off how their car works.

@Jt7166 Жыл бұрын

Seeing how proud and excited David Salters is around the ARX06 is so cool to see. My man is living the dream.

@grendelum Жыл бұрын

mad props to _honda performance development_ for the peek into such a wildly complex and elegant system… i am really curious to see how much material those _beefy_ carbon brake discs lose after 24h of use ;¬)

@MrFlyingmachine Жыл бұрын

RACER and IMSA is now the gold standard in race series coverage both on track and off track. Thanks for the fantastic content.

@rider65 Жыл бұрын

🤮

@FarmYardGaming Жыл бұрын

@@rider65 you're meant to drink that

@elektrofunkzz Жыл бұрын

Idk. Their race highlight videos are pretty poor

@JohnCharb87 Жыл бұрын

I've been learning a lot from these GTP tech videos. New subscriber from a week ago.

@thatkindasux Жыл бұрын

These guys are awesome!! Each of these cars needs a dive on their systems etc., great work! Ill be stopping by for that coffee Aid!

@justinrehm6839 Жыл бұрын

BMW uses something similar as well even on the new road cars. nice to see a more advanced version for these race cars. great content

@j500gjkgk Жыл бұрын

Thank you so much for the technical insight into the new era machines, they really are amazing.

@tomescover1166 Жыл бұрын

Absolutely fascinating! Still trying to wrap my head around all this technology. Insane!

@SmallBlogV8 Жыл бұрын

Man, I never would've thought that Helio Castroneves would be such a one-dimensional co-presenter. Didn't say a word...

@ryanwhitlock7350 Жыл бұрын

So cool. Currently pursuing my bachelor's in aerospace engineering. I want to work for these guys one day.

@JohnnyRacerX Жыл бұрын

Fascinating discussion of the new tech !

@yanal0611 Жыл бұрын

My follow up question to their explanation is how does this translate to pedal feel? A massive part of racing and pushing the limit, especially in braking zones, is being able to feel that brake pedal and understand what’s going on. Feeling if the brakes are too hot, if they’re too cold, if ABS is kicking in, etc. Are the drivers still getting that feedback through the pedal? Or is it more in line with a sim racing pedal at this point?

@cademckee7276 Жыл бұрын

These cars and previous cars already didn’t have ABS so they don’t have to worry about that. However I do remember there being some complaints from drivers when F1 swapped over to brake by wire

@rider65 Жыл бұрын

There will be hardly any feedback it's almost like you can't even make a mistake it's ridiculous

@joshfoley8862 Жыл бұрын

Audi employs a system in their electric cars that pushes back on the pedal when the driver applies force. This translates to feel what the actual brakes are doing. I'm sure these cars have some sort of feedback that gives the driver pedal feedback, varying the feedback based on the brake application.

@cvillalobos27 Жыл бұрын

12 minutes of tech nerdiness. Excellent!!

@jimmymize8536 Жыл бұрын

even you said it was "standard" yet we had to go BACK to brake school and listen to you tell us how the hydraulic brakes work AGAIN !!!! thanks

@gregreed2713 6 ай бұрын

As a braking Engineer : so this is brake blending, as has been done on EV's, even hybrid road cars, for some years now? I'm really curious who is the manufacturer of the brake apply system, and the technology used.

@mauricemotors8207 Жыл бұрын

Similar to F1 right now adjusting the brake bias definitely helps when trying to make a pass.

@MrBlacksmoke7 Жыл бұрын

Any one know how I can get my hands on that GTP hat that Marshall was wearing at the beginning of the segment?

@albubbles9232 Жыл бұрын

Let’s see if I got this. No ABS? No driver bias adjustment. The driver can adjust “feel” ie; 5 lbs of brake pressure medium stopping, 10 lbs of pressure = max-lockup.

@alexpeterson5922 Жыл бұрын

Could the brake force be set up to target a specific amount of deceleration at each pedal position and avoid checking the brake temperature and wheel speed etc. maybe even the mgu regen could be taken out of the electronic braking equation if you just have a target deceleration and know whether or not regen braking is active.

@rainiernqc Жыл бұрын

So the MGU also helps with braking? How it does that? Very curious about this stuff

@chadbarbaro Жыл бұрын

it's an electric motor that can add power, charge the battery or add braking resistance by trying to go in reverse

@mrtwitch444 6 ай бұрын

does anyone know what the sensors are on the drive shafts? 5:01 show's it well

@mrtwitch444 6 ай бұрын

quick google says a torque sensor for scrutineering but what are they scrutineering?

@bukwok Жыл бұрын

is rear break disc way smaller than front break ..? i guess just like F1 car ,little like engine break ,hit the break , regenerate energy to charge battery .

@F-Man Жыл бұрын

Yup, the regen provides the majority of the rear braking force on these cars. If they lose the MGU, they can’t run the car for too long.

@jaimegrant784 Жыл бұрын

But how is the brake feel? Drivers have lost so much over the years. With brake boosters, then ABS, and now brake by wire!!! How are drivers supposed to feel how close they are to the limit?

@aspecreviews Жыл бұрын

The front brakes do most of the braking, and they are still purely hydraulic.

@RhettMillerMovies Жыл бұрын

So, still no clue how it works 😀 Is it the ecu deciding how much hydronic fluid is pumped to each brake based off of all the data it receives allowing for the most consistent braking results? Or is their an entirely different method of braking that doesn’t require the discs, that the ecu can decide to use as assistance or in place of the brakes, when the ECU determines that the brakes will not be able to perform the desired consistent result. Sorry for the misunderstanding, any help would be greatly appreciated

@coliimusic Жыл бұрын

It's actively balancing the brake pressure and the MGU braking as they corner. The Motor-Generator Unit(MGU) can apply braking force by essentially acting as an engine brake when harvesting energy(but it cannot stop the car on it's own), if the car is in a charging mode but the driver still wants a lot of brakes, the car can electronically change which part of the system gets the most load. This allows for some really interesting things such as having a brake map thats mostly MGU and super low pressure so you could do a sort of lift and coast routine to harvest battery, or using low battery to your advantage and adding extra braking force by applying the MGU on top of full brake pressure

@RhettMillerMovies Жыл бұрын

@@coliimusic I guess my confusion is what the MGU braking is

@RhettMillerMovies Жыл бұрын

@@coliimusic thanks for the response by the way!

@dblrightclick Жыл бұрын

@@RhettMillerMovies as a kid, if you ever had a little generator on your bike to power a headlight, it is kind of the same idea. It takes away some of the need to brake because it takes some of the energy used to power the wheels and transfers it to spin a generator to re-charge the battery

@cademckee7276 Жыл бұрын

@@RhettMillerMovies The electric motor that the car uses under acceleration can also be used as a brake when you swap polarities. Basically the spinning electromagnet becomes a magnetic brake on the rear axle rather than a magnetic motor

@robertedwards5456 Жыл бұрын

Very interesting subject. But can you please tell the cameraman to stop drinking coffee at least two days before filming an interview? His constant, fidgeting and moving around is super distracting. Apart from that very interesting video, thank you.

@regibson23 Жыл бұрын

"presses the brakes, a whole load of electrical stuff happens..." These guys act like they have no clue how their own system works. I actually feel less informed after hearing these guys talk.

@indopleaser Жыл бұрын

getting sick of hearing 3 letter acronyms in motorsports. HPD , WAS, willams and honda dont want the credit? there are so many forgettable acronyms, sound like we are talking on the tower of babel