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Old 11-12-2018, 11:56 PM   #31 (permalink)
It's all about Diesel
 
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Originally Posted by Piotrsko View Post
We ran CNG on the handicapped minibusses. They were a PITA below freezing because the regulator froze closed. Other than that they did ok.
Were them dedicated-CNG?

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Old 11-14-2018, 11:04 AM   #32 (permalink)
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Yes full time only fuel. Apparently even in Reno, there is enough water vapor in fuel to freeze in regulator.
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Old 11-14-2018, 01:34 PM   #33 (permalink)
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Quote:
Originally Posted by Piotrsko View Post
Yes full time only fuel. Apparently even in Reno, there is enough water vapor in fuel to freeze in regulator.
Sounds like the fleet buyer didn't specify the correct cold weather package.

Diesel and natural gas vehicles both have cold start issues but the solutions are the same. Heated fuel lines (either coolant or electric) and air intake heaters. In really cold weather an auxiliary heater is added to the fuel lines so warm coolant can continue to circulate through the fuel system and engine block even when the engine is off.
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Old 11-17-2018, 02:21 PM   #34 (permalink)
It's all about Diesel
 
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Diesel and natural gas vehicles both have cold start issues but the solutions are the same.
Apart from that Corolla which my uncle used to own, I have never experienced cold start issues neither in cars I drove or in others I was a passenger. And the overwhelming majority of taxis in my hometown and other Brazilian cities run on CNG. It's also widely used in Argentina, and one of the reasons is that it may be able to start quicker than a Diesel in cold weather. It may take a while for the engine to get running smooth after the start, but then it's a different matter.

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