The second-generation Mazda6 was introduced originally with four different engines – three lively petrol engines and a single turbo diesel producing 140ps. Mazda now introduces the all-new clean MZR-CD 2.2-litre turbo diesel in three power derivatives. It is one of the quietest and most powerful engines in its class, with a lively yet cultivated character that will offer a truly exclusive driving experience to buyers of the second-generation Mazda6.
Offered in three versions producing 185ps, 163ps and 125ps of maximum power output and 400, 360 and 310Nm of torque respectively the 2.2 will meet the demands of a wide spectrum of customers in the UK.
To deliver such highly competitive power and torque from just 2.2-litres, the new engine employs a highly efficient variable-geometry turbo charger (VGT) with curved (instead of straight) vanes on the turbine (exhaust) side.
This increases maximum available torque at both low and high engine speeds, while also increasing all-important low-end response (from as low as 1,800rpm with a flat maximum torque curve that continues until 3,000rpm) that contributes to the smooth and powerful driving feel.
Mazda engineers increased the fuel injection pressure by 11% to 200MPa (the previous generation 2.0-litre turbo diesel uses 180 MPa). They made functional improvements to the high-pressure pump and used new injectors featuring 10 spray holes per injector (instead of the six) that are smaller. These changes enable more precise injection timing and an increase in both the frequency and quantity of the injections. Overall, the new MZR-CD 2.2-litre offers substantially higher power and torque than the previous‑generation 2.0-litre diesel, while delivering equal levels of fuel consumption and CO2 emissions.
The engine’s highly responsive fuel-injection technologies are combined with an exhaust-gas recirculation (EGR) system with a cooler bypass structure – that decreases unburned gases and NOx – to realise superior emissions performance without sacrificing power. Emissions are then treated by a diesel particulate filter (DPF), that uses a unique Mazda-developed, ceramic support matrix structure, which is the first of its kind to go into production in the world.
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