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LaidlawDriverMassachusetts
Senior Member
USA
160 Posts |
 Posted - 11/13/2002 : 8:35:41 PM
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In the morning my bus is usually running for about 45 minutes before my route begins. This may seem like a long period but, but the person who starts it goes out in the yard at this time ...and it's either 45 minutes beforehand ..Or if i start it ..It will only be a few minutes that i get to let it warm up..so i take the obvious 45 minutes...THis way it's nice and warm...WShen i shut the bus down and leave for my K route about 3 hours later..I just start it up and leave..same thing before my afternoon routes...Just start it up - let it idle for 20 seconds and leave - is this enough time for a bus that has been used most of the morning to "warm up"? What happens if a bus isn't allowed to warm up..Does it damage the engine ?
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wagonmaster
Top Member
USA
2298 Posts |
Posted - 11/14/2002 : 04:38:27 AM
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One of my "pet" peeves in the transportation industry is cranking and running a cold engine before a "reasonable" warm-up period. Worse than that are drivers that come in late and hold the cold engine at high RPM to build air pressure in a hurry!!!!! That REALLY gets my attention! Any engine, especially a large diesel, needs an amount of time to get the oil flowing thru all the internal components, and the temperature up off the cold "peg" of the gauge before the engine is asked to "work" by pulling a vehicle around under a load. The 45 minutes is unecessary, but perhaps 10-12 minutes, depending on ambient air temperature, would be sufficient. That's about the amount of time it takes to do a good pre-trip inspection, so it shouldn't be a big deal for drivers to allow that much, in my opinion. It may not be "warm" yet, but it should be able to be driven without damage due to temperature concerns.
Joe
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CRAZYOVERBUSES
Active Member
35 Posts |
Posted - 11/14/2002 : 06:37:40 AM
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In our system, it is mandatory 15 minutes before you leave and 15 minutes before you cut it off and the end of the day.
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1983WardFord
Top Member
USA
1395 Posts |
Posted - 11/14/2002 : 10:05:00 AM
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I was told (well, asked) by one of my supervisors to keep it at about 10 minutes warm-up time maximum. We don't have anything about when we shut the bus down; just park it and turn it off.
If your bus has a block heater, it may help
It's BIG, it's YELLOW, it has RED FLASHING LIGHTS. What part didn't you see?
Ryan's School Bus Yard--www.busman49.com |
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Thomas Ford 85-16
Top Member
USA
4177 Posts |
Posted - 11/14/2002 : 1:12:28 PM
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Idling for 45 minutes is excessive, but if you start it up at the beginning of your pretrip (plus, here at least, the engine is needed for the pretrip) should be enough time to warm it up to run it without damage.
Stop at: http://www.buses.cjb.net
This is an industry where people brag about their times for 60-0, not 0-60. |
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exCYter
Advanced Member
233 Posts |
Posted - 11/14/2002 : 8:44:15 PM
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You guys probably really don't want to know how your buses have been treated BEFORE you got them.
At a dealership such as mine, with hundreds of stock buses, its simply impractical to let buses warm up when you're jockeying buses around all day. As soon as they start we drive them a few hundred yards to whatever bay we need them to be in.
Then again, we also don't have time to * around so we use starter fluid even on 444's. We haven't blown one up yet!!! 
Edited by - exCYter on 11/14/2002 8:47:05 PM |
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Warm up time for a bus
