Mazda Canada

Mazda’s All-New CX-9 to Feature New 2.5-liter Direct-Injection Turbocharged Gasoline Engine


— Premier engine of a SKYACTIV-G array delivers considerable low- to mid-range torque and glorious real-world fuel economy —

HIROSHIMA, Japan, Nov. 18, 2015 /CNW/ – Mazda Motor Corporation has extended a SKYACTIV-G engine array with a range-topping SKYACTIV-G 2.5T. This 2.5-liter direct-injection turbocharged gasoline engine powers a all-new CX-9 midsize three-row crossover SUV that will go on sale starting from North America in open 2016.

The SKYACTIV engine array aims to offer business a multiple of superb fuel economy and glorious energetic opening in bland pushing situations. Mazda’s growth truth is to offer this multiple opposite all car lines, regulating a many suitable engine banishment and simplest pattern of technologies for a given car size. Developed in line with this truth and formed on a naturally aspirated SKYACTIV-G 2.5 featured in a Mazda6 (known as Atenza in Japan), SKYACTIV-G 2.5T is a initial turbocharged engine in a SKYACTIV-G series. It delivers well-developed catalog and real-world fuel economy, glorious response but turbo lag,*1 and linear and absolute acceleration in a low- to mid-rpm operation where CX-9 drivers spend a immeasurable infancy of their time.*2 Maximum torque is 310 ft-lb, allied with a naturally aspirated 4-liter gasoline engine.

Traditionally, turbocharged engines have suffered from bad energetic opening during low rpms, including turbo lag, and unsatisfactory real-world fuel economy. SKYACTIV-G 2.5T overcomes these problems with a Dynamic Pressure Turbo, a world’s initial turbocharging complement that can change a grade of empty tapping depending on engine speed, and a cooled empty gas recirculation (EGR) complement that allows a engine to say a ideal air-fuel ratio*3 (λ=1) over a wider outlay range.

Mazda will continue to offer all business pushing pleasure and superb environmental opening by a SKYACTIV engines that aim to grasp a ideal in combustion. The association hopes to heighten people’s lives and turn a code that maintains an romantic tie with customers.

  • Features of SKYACTIV-G 2.5T
    • High application ratio
      Mazda engineers achieved a application ratio 10.5:1, one of a top for any turbocharged engine with an 89-mm gimlet distance that can run on unchanging gasoline.*4
    • Dynamic Pressure Turbo
      SKYACTIV-G 2.5T is a world’s initial turbocharged engine with a ability to change a grade of empty tapping depending on engine speed. At low rpms (below 1620 rpm), a volume of a empty ports is reduced by shutting a array of valves located only before a turbine that drives a turbocharger. This reduces division between empty pulses and maximizes a appetite of any beat to obtain a high turbine pushing force. At aloft rpms there is sufficient appetite in a empty upsurge and a valves open, permitting a turbine to be driven by a solid upsurge of empty gases as in a normal turbocharger. Whereas existent non-static turbochargers adjust a speed or instruction of empty gas issuing into a turbine, Dynamic Pressure Turbo is a singular record that varies a grade of empty pulsation. 
    • Cooled Exhaust Gas Recirculation (EGR)
      This complement takes some of a dead empty gas that formula from a explosion routine and reduces a heat by flitting it by a cooler before introducing it behind into a engine’s atmosphere intake. This lowers a heat of explosion in a engine, preventing knocking, expanding a operation in that a engine can say a ideal air-fuel ratio and shortening a need to retard ignition timing.
    • Inherits SKYACTIV-G principals of fit explosion
      SKYACTIV-G 2.5T is formed on a naturally aspirated SKYACTIV-G 2.5 and facilities a same bore, cadence and gimlet pitch. Parts of a fuel system, such as a fuel siphon and fuel injection complement are also shared, assisting SKYACTIV-G 2.5T to grasp a rarely fit explosion for that SKYACTIV-G engines are known.


  • SKYACTIV-G 2.5T Specifications (Based in-house measurements)



SOURCE Mazda Canada Inc.

Image with caption: “SKYACTIV-G 2.5T (CNW Group/Mazda Canada Inc.)”. Image accessible at: