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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-07-2012, 04:12 PM   #501 (permalink)
Master EcoModder
 
3-Wheeler's Avatar
 
Join Date: Dec 2008
Location: Southern WI
Posts: 824

AlienMobile - '00 Honda Insight
Team Honda
90 day: 80.05 mpg (US)
Thanks: 94
Thanked 549 Times in 189 Posts
Quote:
Originally Posted by Tango Charlie View Post
That's because you pulse 'n glide like a madman! I'm guessing 3-Wheeler doesn't P&G as aggressively.
When I P&G with the Insight, the engine sometimes gets hotter than if I drive at a constant speed.

Why?

When taking off, I use about 30% throttle at lower RPM, get up to 30 or so then shut off.

Now the engine is heated up from the faster acceleration, and the water pump is now not spinning since the engine is off.

I coast for let's say a 1/2 mile, and still no engine cooling, turn the motor back on and again, step hard on the throttle and engine gets more heat.

If it's a really hot day and I'm doing some serious P&G, it's good to keep an eye on water temp.

WeatherSpotter may be taking off more slowly which would allow more time for engine cooling while the pump is spinning.

Jim.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-07-2012, 08:56 PM   #502 (permalink)
Master EcoModder
 
Join Date: Oct 2008
Location: Mid-Atlantic
Posts: 491

OurInsight - '06 Honda Insight
Thanks: 170
Thanked 68 Times in 43 Posts
3wheeler, when you do those low speed pulse and glides, which gears and which loads do you find most efficient for the pulse segment? Assuming flat terrain of course.

Also, what speed range do you try to use?
  Reply With Quote
Old 10-07-2012, 09:44 PM   #503 (permalink)
Master EcoModder
 
3-Wheeler's Avatar
 
Join Date: Dec 2008
Location: Southern WI
Posts: 824

AlienMobile - '00 Honda Insight
Team Honda
90 day: 80.05 mpg (US)
Thanks: 94
Thanked 549 Times in 189 Posts
Quote:
Originally Posted by jime57 View Post
3wheeler, when you do those low speed pulse and glides, which gears and which loads do you find most efficient for the pulse segment? Assuming flat terrain of course.

Also, what speed range do you try to use?
I accelerate from about 15 to 30 mph in second gear, then allow the revs to drop for several seconds, then hit the FAS button on the shifter.

If I go higher than 30, then I shift into third and continue maybe to 35 or so.

Much higher than 35 mph, and I find that the P&G is not as effective.

Jim.
  Reply With Quote
Old 10-08-2012, 06:53 AM   #504 (permalink)
Master EcoModder
 
Join Date: Oct 2008
Location: Mid-Atlantic
Posts: 491

OurInsight - '06 Honda Insight
Thanks: 170
Thanked 68 Times in 43 Posts
Quote:
Originally Posted by 3-Wheeler View Post
I accelerate from about 15 to 30 mph in second gear, then allow the revs to drop for several seconds, then hit the FAS button on the shifter.
Can you convey some sense of what loads you are using during the acceleration phase? Light, moderate, rather heavy? Do you have a load indicator? I can't remember what you have said about loads, if anything.

BSFC charts for "conventional" cars usually indicate the most "efficient" torque, in terms of fuel used, at rather high loads. I haven't done enough experimental work to know that the therory works out on an insight where one could accelerate at very light loads in 3rd and still have lean burn.
  Reply With Quote
Old 11-25-2012, 03:09 PM   #505 (permalink)
Master EcoModder
 
3-Wheeler's Avatar
 
Join Date: Dec 2008
Location: Southern WI
Posts: 824

AlienMobile - '00 Honda Insight
Team Honda
90 day: 80.05 mpg (US)
Thanks: 94
Thanked 549 Times in 189 Posts
Quote:
Originally Posted by jime57 View Post
Can you convey some sense of what loads you are using during the acceleration phase? Light, moderate, rather heavy? Do you have a load indicator? I can't remember what you have said about loads, if anything.

BSFC charts for "conventional" cars usually indicate the most "efficient" torque, in terms of fuel used, at rather high loads. I haven't done enough experimental work to know that the therory works out on an insight where one could accelerate at very light loads in 3rd and still have lean burn.
Jim,

Sorry I just now saw your post. Whoops.

Yes, when accelerating, I have the throttle at least half way down. According to the ScanGauge, the LOD is 95 or so.

I have gotten very low mileage when accelerating very slowly, such as trying to stay in lean burn.

In other words, if I accelerate using lean-burn, my engine off coasting yields basically the same results as if I were simply driving with the engine on and no coasting.

We had a University student working with us this summer, and he is directly involved in their high-mileage college entry. He went on to say that they employ a small Briggs engine, and the throttle is wide open until they get to their desired speed, where upon it is immediately shut off. Lower pumping losses in the engine that way.

Jim.

Last edited by 3-Wheeler; 11-25-2012 at 03:16 PM..
  Reply With Quote
Old 11-25-2012, 03:14 PM   #506 (permalink)
Master EcoModder
 
3-Wheeler's Avatar
 
Join Date: Dec 2008
Location: Southern WI
Posts: 824

AlienMobile - '00 Honda Insight
Team Honda
90 day: 80.05 mpg (US)
Thanks: 94
Thanked 549 Times in 189 Posts
Top View of Tail

Well, I finally got a chance to get a nice overhead picture of the tail!

There is a new over head bridge going in not too far from the house, and I was watching with an eagle eye for a good time in the bridge construction to drive the car over and get a high elevation picture.



When I get a chance I will analyze the shape against AeroHeads Streamlining Template.

Jim.
Attached Thumbnails
Click image for larger version

Name:	IMG_4756-Above-Tail-Shota.JPG
Views:	1052
Size:	139.5 KB
ID:	11934  
  Reply With Quote
The Following 10 Users Say Thank You to 3-Wheeler For This Useful Post:
aerohead (11-26-2012), California98Civic (11-25-2012), Cd (11-25-2012), fusion210 (11-28-2012), jime57 (04-25-2013), mikeyjd (04-30-2013), NachtRitter (02-24-2014), NeilBlanchard (11-26-2012), Weather Spotter (11-25-2012), wyatt (04-25-2013)
Old 11-25-2012, 04:14 PM   #507 (permalink)
Cd
Ultimate Fail
 
Cd's Avatar
 
Join Date: Feb 2008
Location: Austin,Texas
Posts: 3,033
Thanks: 2,258
Thanked 755 Times in 438 Posts
That's beautiful !
__________________
"You don't fail until you give up. You learn, and move on." - Christ

" Hypermiling is not going slow, it's driving with more intelligence." - UFO
  Reply With Quote
The Following User Says Thank You to Cd For This Useful Post:
3-Wheeler (11-26-2012)
Old 11-25-2012, 08:11 PM   #508 (permalink)
Master EcoModder
 
Join Date: Oct 2012
Location: Carson City, Nevada
Posts: 611

Jimmy - '00 GMC Jimmy SLT
90 day: 21.18 mpg (US)

The White Gnat - '99 Suzuki Swift
Team Suzuki
90 day: 51.87 mpg (US)
Thanks: 232
Thanked 108 Times in 86 Posts
Quote:
Originally Posted by Cd View Post
That's beautiful !
No kidding!!!!!! I just "read" this thread for the first time. ("Read" as in a girly magazine - mostly just looked at the pictures & read the more interesting captions, etc.)

Wow, my hat's off to you, 3-Wheeler!!! Outstanding job!!!
  Reply With Quote
The Following User Says Thank You to wmjinman For This Useful Post:
3-Wheeler (11-26-2012)
Old 11-25-2012, 08:21 PM   #509 (permalink)
Cyborg ECU
 
California98Civic's Avatar
 
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 5,103

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 59.99 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 1,802
Thanked 1,481 Times in 1,019 Posts
Easily one of the handful of really great mod projects on this site. Makes me tired just thinking about all that sanding!
__________________


See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.

  Reply With Quote
The Following User Says Thank You to California98Civic For This Useful Post:
3-Wheeler (11-26-2012)
Old 11-26-2012, 11:33 AM   #510 (permalink)
Grasshopper
 
alohaspirit's Avatar
 
Join Date: Feb 2009
Location: Hawaii
Posts: 964

Makai - '01 Toyota Echo 4D Auto
90 day: 34.45 mpg (US)

New Galaxy - '07 Toyota Prius
90 day: 42.15 mpg (US)
Thanks: 25
Thanked 30 Times in 25 Posts
any new pics?

(ive been following since the beginning)

__________________
Past Present Future?
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: All USED Honda Insight Parts For Sale Fabio For Sale 17 06-16-2013 02:49 PM
Project: Rebuilding an '01 Honda Insight as a nonhybrid Fabio Hybrids 158 01-12-2013 11:59 AM
Project: Zombie Insight (2000 Honda) RobertSmalls Hybrids 191 03-03-2012 06:35 PM
Designing a tail extension for the first-gen Insight RobertSmalls Aerodynamics 187 07-11-2010 10:44 PM
Honda Insight Concept to Debut at Paris Int. Auto Show SVOboy EcoModder Blog Discussion 32 04-17-2009 10:45 AM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com