freefaller
Posts: 10
Joined: Mon Sep 11, 2017 12:54 pm
Delivery Date: 06 Sep 2017

Power usage when stationary in D/B

Sat Sep 30, 2017 10:33 am

When you're stationary in D/B (with your foot on the brake to stop you moving) is power being used by the motor?

It only takes the slightest lift on the brake peddle to start moving (like any normal automatic), and my gut feeling is that the motor is being supplied a tiny amount of power so that it can start moving immediately. I'm trying to get in the habit of selecting P when stationery, just in case.

The energy info screen doesn't show any power usage at all... but then it doesn't show any usage when crawling (with neither the brake or accelerator pressed)/

I just find it hard to believe that the system is supplying power on that tiny bit of lift... but then this is a very advanced piece of technology, and I'm used to be wrong! :)

I realise that even if it is using energy, it's using such a tiny amount it makes no difference in the whole scheme of things.

Cheers,
Tom

DaveinOlyWA
Gold Member
Posts: 12207
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 10 Nov 2016
Leaf Number: 314199
Location: Olympia, WA
Contact: Website

Re: Power usage when stationary in D/B

Sat Sep 30, 2017 10:53 am

yes power is being used by the brakes, the motor, etc. Creep is on all the time. You would save a little by being in park. Not sure I can recommend that and this is coming from someone who constantly shifts between B mode and neutral as a normal part of my daily driving
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 (build 10/2016)"low water marks" 26,100.2 miles.363GID Ahr 79.55Hx95.35%kwh28.1QCs227,L2's 237
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LeftieBiker
Posts: 7128
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: Power usage when stationary in D/B

Sat Sep 30, 2017 1:22 pm

The brake pedal is supposed to kill motor power as it does in most EVs. I suspect that the feeling of straining against the brake pedal is an illusion.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

GerryAZ
Gold Member
Posts: 1448
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Power usage when stationary in D/B

Tue Oct 03, 2017 7:41 pm

If you have LEAF Spy Pro, you can see motor power and you can see it go to zero with your foot firmly on the brake. There will be some power draw if you lightly press the brake pedal (at least on 2011 and 2015). As the brake pedal is released, creep comes on before the brakes are fully released to give a feeling similar to an automatic transmission in a conventional car.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015

freefaller
Posts: 10
Joined: Mon Sep 11, 2017 12:54 pm
Delivery Date: 06 Sep 2017

Re: Power usage when stationary in D/B

Wed Oct 04, 2017 12:55 am

Thanks for your replies - it's much appreciated.
I've also learnt the term "creep" :)

philip
Posts: 110
Joined: Tue Nov 27, 2012 8:18 pm
Delivery Date: 25 Aug 2015
Leaf Number: 327341
Location: El Cajon, CA

Re: Power usage when stationary in D/B

Wed Oct 04, 2017 12:10 pm

LeftieBiker wrote:The brake pedal is supposed to kill motor power as it does in most EVs. I suspect that the feeling of straining against the brake pedal is an illusion.


Have you tried this? You can step on the brake and the accelerated together and the motor will produce torque.
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