Idle time
Discussion in 'Trucks [ Eighteen Wheelers ]' started by Castel, Nov 4, 2010.
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If you can cut that idle % as much as possible you will be flirting with 7's!
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Just to clear this up... his fuel economy while driving won't go down but his fuel usage will be reduced if he cuts his idleing time.
Mine is about 3%... no APU but I do have an ESPAR bunk heater. -
good point krooser---but with a large idle time it does really give a false mpg doesnt it?
and other than an apu the espar is the way to go---i have never had an apu,but wouldnt want to be without an espar -
Their is no positive advantages from idling the engine that is why most come with a 5 minute idle timer. That is plenty of time to warm it up enough to safely drive. -
If you fill your tanks, run 1,000 miles and never idle you get X for fuel economy.
If you run the same run and idle for 10 hours, your MPG # will fall...
Your ECM never uses idle time to determine fuel economy... it only computes that info when the wheels are turning... -
ok--losing me a bit---so are you saying the ecm mpg would be accurate as it doesnt take the idle time into consideration?
but a manual computation wouldnt work as it still has the idle fuel in the calculation?
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hmmm i am sure on the detroit ---if you have to idle at night--when you wake up--your mpg is down cause of the idling--then thruout the day it comes back up during the day as your drive time eclipses the idle time
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The only accurate way to figure MPG is to shut off the engine and not idle when doing it with a pencil. -
On a detroit, in the fuel report section you can read overall fuel MPG and driving MPG. Thats where you can see how much idle affects the truck.
Can't speak to how the cat works, don't have the software
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