Why cant gas cars use diesel and vice versa?
In: Technology
In a diesel engine there aren’t any spark plugs, the diesel ignites just by compression, if you try to ignite diesel with a lighter you’ll see it’s much harder than gasoline. For this reason diesel engines have a high-pressure fuel pump on top of the normal fuel pump that gasoline engines have. Diesel engines have “glow plugs” which heat the cylinders before the engine starts so the diesel can ignite. It’s much worse if you put gasoline in a diesel engine than vice versa because the high-pressure pump needs lubrication from the diesel to not break. This is also the reason why it’s bad if a disel engine runs out of fuel because there will be air pockets in the fuel line that can damage the pump, some engines have an air-bleeding system thay is used if that happens. Gasoline engines on the other hand have spark plugs that create a spark every fourth stroke of each cylinder at the exact time, which is how the gasoline ignites ( or how it should, of you use lower-octane fuel it can also ignite prematurely from the pressure which is bad). The two types of engines work completely differently, so this is why they can’t run on the other fuel.
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