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Originally Posted by saltfish
This is why there are additives for diesel that prevent it from gelling at low temperatures.
Diesel engines are also equipped with 'glow plugs' that heat up the top of the combustion chamber to help aid the combustion process. Also, diesel combustion is unlike gas, in that the compression in the cylinders is responsible for the combustion, not a spark; being so, vaporization is not necessary.
-SF
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You can always tell the difference between a private-owner driver and a corporate driver. ...the private-owner driver turns off their engine.
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No offense, but you are starting to dig yourself a hole.
Some, not all diesels have glow plugs. They are used to heat the combustion chamber prior to starting, not while running. (and if used with ether to try to start an engine, will blow parts clean off an engine) They are common on pickups and construction equipment, but rarely seen on heavy trucks. If a truck engine has a starting aid, it's usually in the form of an intake heater or an ether injector.
Diesel engines atomize the fuel when they spray it into the combustion chamber. And if diesel gets cold enough, it just plain quits flowing.
And the corporate driver/Owner Operator comparison is not that accurate, either. Most companies have an 'x amount of minutes' idling policy. And I know of several long-haul Owner Operators that only shut down when they are required to.
There are outfits that make auxilliary power units for trucks, but they are pricey.