Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-27-2022, 01:45 AM   #1 (permalink)
Master EcoModder
 
Phase's Avatar
 
Join Date: Mar 2022
Location: oregon
Posts: 339

Black Bullet - '19 Hyundai Ioniq Hybrid Blue
Thanks: 0
Thanked 150 Times in 131 Posts
Throttle stop vs coast down testing

Has anyone done both?

I tried Coast down testing with before and after windows down at around 60 mph. Literally no difference surprisingly. I heard that itís only really effective at super high speeds, over 90 mph and higher

Was going to try the throttle stop testing next, with windows up and down, but my pedal barely moves and I donít need to push down on it hard ti maintain a high speed. So no idea what itíll do

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-27-2022, 09:31 AM   #2 (permalink)
マット
 
M_a_t_t's Avatar
 
Join Date: Nov 2015
Location: Indiana
Posts: 712

The Van - '95 Chevy Astro Cl V8 Swapped
Team Chevy
90 day: 7.84 mpg (US)

The new bike - '17 Kawasaki Versys X 300 abs
Motorcycle
90 day: 61.58 mpg (US)

The Mercury - '95 Mercury Tracer Trio
Team Ford
90 day: 34.35 mpg (US)

Toyota - '22 Toyota Corolla Hatchback
90 day: 41.26 mpg (US)
Thanks: 131
Thanked 257 Times in 187 Posts
Throttle stop testing doesn't work for cars with electronic throttles. Being a 2019 ioniq it probably has electronic throttle.
__________________
1973 Fiat 124 Special
1975 Honda Civic CVCC 4spd
1981 Kawasaki KZ750E
1981 Kawasaki KZ650 CSR
1983 Kawasaki KZ1100-A3
1986 Nissan 300zx Turbo 5 spd
1995 Chevy Astro RWD (current project)
1995 Mercury Tracer
2017 Kawasaki VersysX 300
2022 Corolla Hatchback 6MT

https://www.youtube.com/channel/UC6s...LulDUQ8HMj5VKA
  Reply With Quote
Old 05-27-2022, 04:42 PM   #3 (permalink)
Master EcoModder
 
Phase's Avatar
 
Join Date: Mar 2022
Location: oregon
Posts: 339

Black Bullet - '19 Hyundai Ioniq Hybrid Blue
Thanks: 0
Thanked 150 Times in 131 Posts
Quote:
Originally Posted by M_a_t_t View Post
Throttle stop testing doesn't work for cars with electronic throttles. Being a 2019 ioniq it probably has electronic throttle.
so whats the best test? coast down at super high speeds probably? i wish i just had an accurate way to measure aero mods and their impact and how sensitive it is
  Reply With Quote
Old 05-27-2022, 05:46 PM   #4 (permalink)
マット
 
M_a_t_t's Avatar
 
Join Date: Nov 2015
Location: Indiana
Posts: 712

The Van - '95 Chevy Astro Cl V8 Swapped
Team Chevy
90 day: 7.84 mpg (US)

The new bike - '17 Kawasaki Versys X 300 abs
Motorcycle
90 day: 61.58 mpg (US)

The Mercury - '95 Mercury Tracer Trio
Team Ford
90 day: 34.35 mpg (US)

Toyota - '22 Toyota Corolla Hatchback
90 day: 41.26 mpg (US)
Thanks: 131
Thanked 257 Times in 187 Posts
I don't know the answer to that. I don't have anything with electronic throttle so I haven't had to deal with it. You could use pressure testing, but I don't think it is a straight forward answer since you will have to consider more factors.

You could just try the window up/down coast test at high speeds to see if the difference is more pronounced.
__________________
1973 Fiat 124 Special
1975 Honda Civic CVCC 4spd
1981 Kawasaki KZ750E
1981 Kawasaki KZ650 CSR
1983 Kawasaki KZ1100-A3
1986 Nissan 300zx Turbo 5 spd
1995 Chevy Astro RWD (current project)
1995 Mercury Tracer
2017 Kawasaki VersysX 300
2022 Corolla Hatchback 6MT

https://www.youtube.com/channel/UC6s...LulDUQ8HMj5VKA
  Reply With Quote
Old 05-27-2022, 06:40 PM   #5 (permalink)
EcoModding Apprentice
 
Join Date: Apr 2022
Location: California
Posts: 161

Cx9 - '18 Mazda CX9 Grand Touring
90 day: 31.41 mpg (US)

Prius - '10 Toyota Prius III
90 day: 57.8 mpg (US)

Tundra - '00 Tundra V6 long bed base work truck
90 day: 19.4 mpg (US)
Thanks: 94
Thanked 76 Times in 54 Posts
If you can log speed vs time on multiple coast down tests you should be able to see a trend in the data (if there is a meaningful difference).

Do you have a scangauge or anything like it? Perhaps you could monitor power or load with cruise control set at a certain speed and see how much it changes with the windows down vs up. Just make sure you also monitor the battery state of charge to make sure you're comparing apples to apples (and not a run which charged the battery against a run that depleted the battery)
  Reply With Quote
Old 05-27-2022, 09:00 PM   #6 (permalink)
Master EcoModder
 
Phase's Avatar
 
Join Date: Mar 2022
Location: oregon
Posts: 339

Black Bullet - '19 Hyundai Ioniq Hybrid Blue
Thanks: 0
Thanked 150 Times in 131 Posts
Quote:
Originally Posted by Drifter View Post
If you can log speed vs time on multiple coast down tests you should be able to see a trend in the data (if there is a meaningful difference).

Do you have a scangauge or anything like it? Perhaps you could monitor power or load with cruise control set at a certain speed and see how much it changes with the windows down vs up. Just make sure you also monitor the battery state of charge to make sure you're comparing apples to apples (and not a run which charged the battery against a run that depleted the battery)
scangauge wont work with the ioniq and how it shuts the engine off and goes full ev mode then switches back to engine to charge the battery then switches back to ev and so on

if electronic throttle is an issue, then i guess coast down tests going 90mph versus 60 may do something
  Reply With Quote
Old 05-27-2022, 09:33 PM   #7 (permalink)
Human Environmentalist
 
redpoint5's Avatar
 
Join Date: Aug 2010
Location: Oregon
Posts: 10,237

Acura TSX - '06 Acura TSX
90 day: 28.24 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 57.64 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 26.71 mpg (US)

Chevy ZR-2 - '03 Chevrolet S10 ZR2
90 day: 17.14 mpg (US)
Thanks: 3,554
Thanked 3,819 Times in 2,873 Posts
Why doesn't it work with throttle-by-wire? I understand that throttle position is a suggestion to the computer, but it's one that should be consistent in testing.
__________________
Gas and Electric Vehicle Cost of Ownership Calculator







Give me absolute safety, or give me death!
  Reply With Quote
Old 05-28-2022, 12:27 PM   #8 (permalink)
マット
 
M_a_t_t's Avatar
 
Join Date: Nov 2015
Location: Indiana
Posts: 712

The Van - '95 Chevy Astro Cl V8 Swapped
Team Chevy
90 day: 7.84 mpg (US)

The new bike - '17 Kawasaki Versys X 300 abs
Motorcycle
90 day: 61.58 mpg (US)

The Mercury - '95 Mercury Tracer Trio
Team Ford
90 day: 34.35 mpg (US)

Toyota - '22 Toyota Corolla Hatchback
90 day: 41.26 mpg (US)
Thanks: 131
Thanked 257 Times in 187 Posts
I only repeated what others had expressed when they tried it. No reason to wonder. Try it and let us know. I only know of one case, having multiple sources would help confirm.

My understanding is that the electronic throttle is good for a hybrid for obvious reasons. I've read that its purpose for gas only models make the car feel better than it is, for example if you are going up a hill while holding the throttle steady it will adjust throttle to maintain that speed.
__________________
1973 Fiat 124 Special
1975 Honda Civic CVCC 4spd
1981 Kawasaki KZ750E
1981 Kawasaki KZ650 CSR
1983 Kawasaki KZ1100-A3
1986 Nissan 300zx Turbo 5 spd
1995 Chevy Astro RWD (current project)
1995 Mercury Tracer
2017 Kawasaki VersysX 300
2022 Corolla Hatchback 6MT

https://www.youtube.com/channel/UC6s...LulDUQ8HMj5VKA
  Reply With Quote
Old 05-28-2022, 05:58 PM   #9 (permalink)
Master EcoModder
 
Phase's Avatar
 
Join Date: Mar 2022
Location: oregon
Posts: 339

Black Bullet - '19 Hyundai Ioniq Hybrid Blue
Thanks: 0
Thanked 150 Times in 131 Posts
Quote:
Originally Posted by M_a_t_t View Post
I only repeated what others had expressed when they tried it. No reason to wonder. Try it and let us know. I only know of one case, having multiple sources would help confirm.

My understanding is that the electronic throttle is good for a hybrid for obvious reasons. I've read that its purpose for gas only models make the car feel better than it is, for example if you are going up a hill while holding the throttle steady it will adjust throttle to maintain that speed.
nope. def have to push down harder to maintain same speed going up hill.

only time you hear the throttle rev going up hill is if you use cruise control
  Reply With Quote
Old 05-29-2022, 09:46 AM   #10 (permalink)
マット
 
M_a_t_t's Avatar
 
Join Date: Nov 2015
Location: Indiana
Posts: 712

The Van - '95 Chevy Astro Cl V8 Swapped
Team Chevy
90 day: 7.84 mpg (US)

The new bike - '17 Kawasaki Versys X 300 abs
Motorcycle
90 day: 61.58 mpg (US)

The Mercury - '95 Mercury Tracer Trio
Team Ford
90 day: 34.35 mpg (US)

Toyota - '22 Toyota Corolla Hatchback
90 day: 41.26 mpg (US)
Thanks: 131
Thanked 257 Times in 187 Posts
I meant it makes small changes to keep speed, not full on maintain speed on a hill. Watch the tps and you can see it change a few percent is what they were reporting. So the ECM increases throttle when the vehicle slowed.

__________________
1973 Fiat 124 Special
1975 Honda Civic CVCC 4spd
1981 Kawasaki KZ750E
1981 Kawasaki KZ650 CSR
1983 Kawasaki KZ1100-A3
1986 Nissan 300zx Turbo 5 spd
1995 Chevy Astro RWD (current project)
1995 Mercury Tracer
2017 Kawasaki VersysX 300
2022 Corolla Hatchback 6MT

https://www.youtube.com/channel/UC6s...LulDUQ8HMj5VKA
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com