Forum

Electric fuel pump shut offs

You are here

5 posts / 0 new
Last post
keithwyss's picture
ARCA AmbassadorNASCAR AmbassadorPit Lane Safety Ambassador
Offline
Joined: August 5, 2015
Location: 
Fort Wayne, IN
Last seen: 1 week 5 days ago
May 20, 2017
Electric fuel pump shut offs

How many sanctioning bodies have rules that require the electric fuel pump to be shut off in case the race vehicle no longer has oil pressure- no matter the reason?  It appears that several larger fires recently were fed by fuel provided by an electric fuel pump after engines had stopped/oil pressure ceased.

Battery disconnect switches are ok- and not always effective. It is my opinion that oil pressure based control and redundant power cutoffs, combined with proper rule enforcement/inspections will reduce the fire hazard for both participants and safety personnel. 

What is your experience and opinions on this subject?

Keith Wyss, Ambassador

hcisneros's picture
Champion
Offline
Joined: March 18, 2015
Location: 
Miami, FL
Last seen: 6 months 2 weeks ago
May 22, 2017

Is your oil pressure comment based on implying that the engine is off so there would be no signs of oil pressure?

keithwyss's picture
ARCA AmbassadorNASCAR AmbassadorPit Lane Safety Ambassador
Offline
Joined: August 5, 2015
Location: 
Fort Wayne, IN
Last seen: 1 week 5 days ago
May 22, 2017

My comment is based on the knowledge that oil pressure based electrical connection to electric fuel pumps causes the fuel pump power to be interrupted when oil pressure ceases.  The cause of the loss of oil pressure can be simply shutting off the engine, breaking a mechanical component, or abrupt stoppage as in a spin or a crash. Simply stated, if you have no oil pressure- your immediate need for fuel has ceased.

Another way of looking at it...if you have no oil pressure, cutting off power to the fuel pumps is helpful mechanically AND from the safety perspective.

Thank you for asking!  Did I adequately answer your question? 

Keith Wyss, Ambassador

hcisneros's picture
Champion
Offline
Joined: March 18, 2015
Location: 
Miami, FL
Last seen: 6 months 2 weeks ago
June 6, 2017

Yes thank you.  Any insight that you can provide on what the OEM built race cars such as GT3 spec come with?  What is the FIA ruling on this?

IanRae's picture
Offline
Joined: April 9, 2018
Location: 
Oakville, ON
Last seen: 1 week 6 days ago
April 9, 2018

Henrique, most road cars have a feature similar to this now. Turn the ignition on and the fuel pump will run for a few seconds and then shutoff. They will only run once the starter turns the motor over so it could be oil pressure or rpm that is used in the computer logic to control it. I have my racecar set up to shutdown the fuel pump when rpm is less than 150

Make A Monthly Donation

  • Other: $

DONATE NOW

Pay tribute to the memory of someone special by making a memorial donation. The motorsport world is as thrilling as it is dangerous and sometimes even the best drivers, marshals and fans get taken from us too soon. Honor a loved one with your contribution and help fund our safety-related programs in their name. Click Here.