Stupid question but very curious.

Thread Tools
 
Search this Thread
 
  #1  
Old 08-06-2007, 12:48 PM
jonjonbear's Avatar
Enthusiast
Thread Starter
Join Date: Jul 2007
Location: Bastrop, Texas (near Austin)
Posts: 18
Default Stupid question but very curious.

Hello all,
Got to drive my first Prius on Saturday at the local Toyota house..Very nice car! But of course had the salesman so didn't want to thrash it!
Seemed to be all I need and want in a car but something I forgot to try..
If the car is on, and in neutral, if you press the gas pedal does the gas engine start and rev like a normal car? Does it do anything at all? I know this is unimportant to the operation of the car, just wondering how that differs from a standard type car...There were so many things I was trying to check out and try...I have to say it's the coolest car I have driven in a long time..Definitely a technogeeks dream! The one I drove seemed heavily optioned so I think we are going to order a Barcelona red touring model package six with leather..
John
 
  #2  
Old 08-06-2007, 01:30 PM
tekn0wledg's Avatar
Active Enthusiast
Join Date: Jul 2007
Posts: 83
Default Re: Stupid question but very curious.

I think, and I have not done any testing to verify this, that when you are in nuetral and rev the engine, if you reach the requirements for turning on the gas engine it will do so. I may be wrong, but it seems logical to me. It would probably follow the same requirements for turning on normally, e.g. heavy acceleration or an RPM threshold around 42mph etc.

As for the touring model, some members have suggested that fuel economy won't be as good in that model because it has larger tires. However, if fuel economy isn't your thing, by all means enjoy! It's all about what makes you happy in the long run.
 
  #3  
Old 08-06-2007, 01:38 PM
bwilson4web's Avatar
Engineering first
Join Date: Oct 2005
Location: Huntsville, AL
Posts: 5,613
Default Re: Stupid question but very curious.

Hi,

When in "neutral," the power electronics for MG1 and MG2 are 'off.' This means if the ICE is running, it keeps running. If the ICE is off, it stays off. As for the accelerator, it is just inputs to a control computer and it won't do anything when in "N" to speed up or slow down the ICE.

When in "D", you can force-charge the battery by holding the brake and flooring the accelerator. The engine will strain but basicly throw a charge onto the battery until it reaches 80% and then the engine will shutdown. Instrumentation indicates this is perfectly safe and does no harm . . . unless you are about to enter a mileage driving contest. With a fully charged battery, you'll have a slight advantage. <GRINS>

I've also done some maximum acceleration tests using standing start in 'forced charge' mode versus just 'stomp accelerator' mode. Both are a lot of fun but 'stomp the accelerator' seems to have a slight advantage. That extra charge on the battery is also a good thing! <GRINS>

Did I mention it was FUN!!!!

Bob Wilson
 

Last edited by bwilson4web; 08-06-2007 at 02:01 PM.
  #4  
Old 08-06-2007, 01:44 PM
nash's Avatar
Ridiculously Active Enthusiast
Join Date: May 2006
Location: San Diego
Posts: 685
Default Re: Stupid question but very curious.

My TCH will start the ICE if you press the gas in Neutral. I don't recall the gas having any effect on ICE speed in Neutral. Oddly, my FEH not only will start the ICE in Neutral when you press the gas, but will also "fast idle" if you goose the gas.
 
  #5  
Old 08-06-2007, 01:54 PM
tekn0wledg's Avatar
Active Enthusiast
Join Date: Jul 2007
Posts: 83
Default Re: Stupid question but very curious.

Originally Posted by bwilson4web
When in "D", you can force-charge the battery by holding the brake and flooring the accelerator. The engine will strain but basicly throw a charge onto the battery until it reaches 80% and then the engine will shutdown. Instrumentation indicates this is perfectly safe and does no harm . . . unless you are about to enter a mileage driving contest. Will a fully charged battery, you'll have a slight advantage. <GRINS>
Ooooh! That's good to know. I hadn't even thought of that.
 
  #6  
Old 08-06-2007, 01:57 PM
jonjonbear's Avatar
Enthusiast
Thread Starter
Join Date: Jul 2007
Location: Bastrop, Texas (near Austin)
Posts: 18
Default Re: Stupid question but very curious.

Originally Posted by tekn0wledg

As for the touring model, some members have suggested that fuel economy won't be as good in that model because it has larger tires. However, if fuel economy isn't your thing, by all means enjoy! It's all about what makes you happy in the long run.
I wonder just how much the touring loses in economy? Toyota doesn't give it a different rating but I see how it might..But might be worth it..We drive a windy two lane road every day so the added suspension would be nice plus the wheels are nicer IMO..

but nothing written in stone yet..Thanks for the quick reply!
John
 
  #7  
Old 08-06-2007, 01:58 PM
jonjonbear's Avatar
Enthusiast
Thread Starter
Join Date: Jul 2007
Location: Bastrop, Texas (near Austin)
Posts: 18
Default Re: Stupid question but very curious.

Originally Posted by bwilson4web
Hi,

When in "neutral," the power electronics for MG1 and MG2 are 'off.' This means if the ICE is running, it keeps running. If the ICE is off, it stays off. As for the accelerator, it is just inputs to a control computer and it won't do anything when in "N" to speed up or slow down the ICE.

When in "D", you can force-charge the battery by holding the brake and flooring the accelerator. The engine will strain but basicly throw a charge onto the battery until it reaches 80% and then the engine will shutdown. Instrumentation indicates this is perfectly safe and does no harm . . . unless you are about to enter a mileage driving contest. Will a fully charged battery, you'll have a slight advantage. <GRINS>

I've also done some maximum acceleration tests using standing start in 'forced charge' mode versus just 'stomp accelerator' mode. Both are a lot of fun but 'stomp the accelerator' seems to have a slight advantage. That extra charge on the battery is also a good thing! <GRINS>

Did I mention it was FUN!!!!

Bob Wilson
Thanks Bob!
I bet that would be an odd situation but good to know you can do it if you need to quick charge the batteries..
John
 
  #8  
Old 08-07-2007, 05:07 AM
tekn0wledg's Avatar
Active Enthusiast
Join Date: Jul 2007
Posts: 83
Default Re: Stupid question but very curious.

Originally Posted by jonjonbear
I wonder just how much the touring loses in economy? Toyota doesn't give it a different rating but I see how it might..But might be worth it..We drive a windy two lane road every day so the added suspension would be nice plus the wheels are nicer IMO..
It boils down to what makes you most comfortable. I would do some poking around this forum, and some of the other Prius owner forums, and see what their experiences are with the touring model.

The last instance that I recall reading, the owner suggested he was getting about 3-5mpg less than the average for the regular model. That being said, I believe he only had it for a few tanks, so I don't know how much stock you want to hold in that.

Let us know what you end up doing!
 
  #9  
Old 08-07-2007, 05:29 AM
jonjonbear's Avatar
Enthusiast
Thread Starter
Join Date: Jul 2007
Location: Bastrop, Texas (near Austin)
Posts: 18
Default Re: Stupid question but very curious.

Originally Posted by tekn0wledg
It boils down to what makes you most comfortable. I would do some poking around this forum, and some of the other Prius owner forums, and see what their experiences are with the touring model.

The last instance that I recall reading, the owner suggested he was getting about 3-5mpg less than the average for the regular model. That being said, I believe he only had it for a few tanks, so I don't know how much stock you want to hold in that.

Let us know what you end up doing!
Wow!
3-5 mpg? That's a lot! Thanks for the tip, I better do some pokin around..Being my commute is mostly highway, I need all the upper numbers I can keep...
John
 
  #10  
Old 08-07-2007, 05:55 AM
bwilson4web's Avatar
Engineering first
Join Date: Oct 2005
Location: Huntsville, AL
Posts: 5,613
Talking Re: Stupid question but very curious.

Originally Posted by jonjonbear
Wow!
3-5 mpg? That's a lot! Thanks for the tip, I better do some pokin around..Being my commute is mostly highway, I need all the upper numbers I can keep...
In the hot-rod community, they learned the importance of low weight tires. It takes energy to spin the tires and they've realized that smaller diameter, lighter weight tires gives them an advantage accelerating and a slight reduction in braking load. In fact, a local speed shop tried to sell me some low inertial weight tires . . .

For fun, I've speculated about getting three donut spares and putting four of them on my Prius for mileage testing. It would also lower the body for less drag and speed limitations would not be a problem in a contest. <grins>

Bob Wilson
 


Quick Reply: Stupid question but very curious.


Contact Us -

  • Manage Preferences
  • Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Your Privacy Choices -

    When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

    © 2024 MH Sub I, LLC dba Internet Brands


    All times are GMT -7. The time now is 07:37 AM.