How do mazda engines work

This reduces combustion temperatures, lowers NOx emissions, improves the amount of useful work produced with the same amount of fuel, and reduces heat loss to the cylinder bore. Remember, compression ignition means you want the fuel to ignite all on its own. Using a higher octane fuel would in this case make combustion more difficult. The more sensitive the fuel is to pressure changes, the more easily Mazda can control exactly when it ignites by using a spark plug.

The Miller cycle nearly synonymous with the modern Atkinson cycle is a trick used on modern engines for improved efficiency. The idea is to leave the intake valve open for a portion of the compression stroke, pushing some of the air and fuel out of the cylinder back where it came from. This reduces the effective compression ratio, and together with a now relatively higher expansion ratio, reduces fuel consumption. But Mazda uses the Miller cycle for exactly the opposite reason: torque!

When the engine wants peak power over great fuel economy, the supercharger only provides a modest amount of boost. Join Now.

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Brian Cooley. The latest 2. This results in a broader operating band of combustion efficiency, which ensures e-Skyactiv X not only delivers higher maximum engine torque but also improves real-world fuel economy. This improvement on control smooths drivability by increasing or reducing torque control when needed. As a result, the engine feels even smoother during linear acceleration.