The SkyActiv engine cars from Mazda comply with the Euro 6 standards of emission. These cars do not require an after treatment with NOx systems. The diesel engines are being marketed as one of kind unique systems that eliminate the associated problems of acceleration lag and poor fuel efficiency.

Those who follow the engine advances of Mazda will find that the compression ratio of 14:1 comes as no surprise. Most SkyActive petrol engines also follow the same standard. The high compression ratio was previously thought as impossible to incorporate into a diesel system.

The reason being high pressure within the combustion chamber resulted in elevated temperature. The increased temperature led to partial combustion with the formation of by-products like soot and nitrous oxides. An approach to eliminate this problem was through delayed ignition which is in turn ineffective because fuel efficiency is lost.

The engineers at Mazda devised an alternative which is efficient and fool proof: controlled fuel injection supported by timed opening of exhaust valves solved the issue of by-product formation.

The process of variable patters of fuel injection is orchestrated by multi-holed piezo injectors. Exhaust valve opening pattern is controlled by a novel lift mechanism using valves that are variable. As a result, when the car is cold started, the released hot exhaust is fed to the cylinders to enable a quicker engine warm-up.

For more information on Mazda cars and its engine, visit Cardinale Mazda.

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Cardinale Mazda

500 Auto Center Circle

Salinas, California 93907

Phone: 877.989.9252

Website: www.cardinalemazda.com