Quote:
Originally Posted by Big Dave
CNG's octane rating is so astronomical that even a 21:1 compression ration diesel will not compression ignite it. Natural gas is the one hydrocarbon I can think of that defeats a diesel. "Dual-fuel" engines use a little shot of diesel to compression-ignite and blow-torch the natural gas into combustion.
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I'm a die-hard dieselhead, but I actually consider CNG as a reasonable alternative combined with Diesel due to its cleaner burn.