Gasoline ratios Serious damage to gas engines can occur if you attempt to run a high compression ratio with a low octane type of fuel. Detonation is the ignition of the fuel due to the high temperature caused by a high compression ratio that is developed by design. The fuel is ignited prior to the spark of the plugs that result in a rapid, yet uncontrolled burning. Diesel ratios Keep in mind, the diesel is a heat engine, using heat developed from the compression of air. High compression ratios are possible since the air is compressed. The hot compressed air is sufficient to ignite the diesel fuel when it's finally injected near the top of the compression stroke. Diesel engines Fuel and air in the design of diesel engines are not premixed outside of the cylinder. Air is taken into the cylinder through the intake valve and then compressed to make heat. The diesel fuel is injected near the top of the piston's stroke in an amount or ratio that corresponds to the load on the engine. Heavy duty The higher compression ratio causes engineers to design, and test the block, heads, head bolts, crackshaft, connecting rods, rod bolts, pistons, piston pins, etc., with a greater range of structural capacity. To put it in other terms, diesels are heavier than gasoline engines. Gasoline
Deciding on gas and diesel can be tough, although
there are several 1. Diesel engines produce twice the power
per gallon of fuel than gasoline.
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