Upcoming Mazda2 to adopt SKYACTIV-D engine

The all-new Mazda2 based on the Hazumi Concept will take up the SKYACTIV-D 1.5-liter Clean Diesel powerplant as part of the Hiroshima-based automotive marque’s quest to infuse the SKYACTIV Technology element to all its new-generation vehicles.

Similarly to the next generation SKYACTIV-D 2.2 clean diesel engine available in variants such as the Mazda CX-5, the SKYACTIV-D 1.5 was developed in the pursuit of ideal combustion despite a very low compression ratio. As a result, the engine boasts a dynamic performance, including torque equal to a 2.5-liter gasoline engine and linear acceleration all the way up the RPM range. It also features exemplary environmental performance without resorting to expensive NOx after-treatment systems.

All-new Mazda2 takes up the SKYACTIV-D 1.5-liter; a smaller variation of the SKYACTIV-D 2.2

Inheriting numerous innovative technologies from the SKYACTIV-D 2.2, additional advances were made to the SKYACTIV-D 1.5 to further enhance the engine and make it suitable for subcompact vehicles. Additional technologies include an expanded homogenous lean burn range, further reduction in mechanical resistance, and insulation technology to curb the increase in cooling loss associated with a smaller engine size.

The new Mazda2 with SKYACTIV-D 1.5 clean diesel will first debut in Japan as part of the Post New Long-term Emissions regulations for diesel-engine compact car. Combined with Mazda’s i-stop idling stop technology, i-ELOOP brake energy regeneration system, and high-efficiency SKYACTIV-Drive automatic transmission or SKYACTIV-MT manual transmission, the SKYACTIV-D 1.5 will ensure the new Mazda2 achieve among the highest level test mode fuel economy figures for a vehicle powered solely by combustion engine.

In a nutshell, the 1.5 SKYACTIV-D is intended to pursue an ideal combustion efficiency with the lowest compression ratio on a diesel-engine compact car; 14.8:1. This process is enabled, thanks to suppression of cooling loss via the combustion mode transition control technology and high dispersion solenoid injectors, along with stepped egg-shaped pistons which help to reduce contact between the flame and chamber wall. Other features include high pressure and low pressure EGR systems, engine cooling system with water control valves and water jacket spacers, Variable turbine geometry turbocharger with rotation sensor, and Water-cooled intercooler integrated into the intake manifold.

New Mazda2;s SKYACTIV-D 1.5 key specifications:

Cylinders: In-line four-cylinder direct injection 1.5-liter diesel engine
Engine displacement: 1.497 Liters
Bore x Stroke: 76.0mm x 82.5 mm
Compression ratio: 14.8:1
Max. output : 77kW [105PS]/4,000rpm
Max. torque : 250Nm /1,500-2,500rpm

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