The Mazda6 or Mazda 6 (known as the Mazda Atenza in China and Japan) is a Mid-size car produced by the Japanese car manufacturerMazda since 2002, now in its third generation. It replaced the long-serving Mazda 626 (sold in Japan as the Capella) which replaced theMazda 616 (piston engined version of the RX-2) in 1977. The Mazda6 has sold over one million units worldwide since its introduction, hitting this sales milestone faster than all previous Mazdas.
The Mazda6 was the first example of the company's new Stylish, Insightful, and Spirited design philosophy followed by the Mazda2 in December 2002, the RX-8 in August 2003, the Mazda3 in January 2004, the Mazda5 in the summer of 2005, the MX-5 in October 2005, and the Mazda CX-7 in November 2006. The 2003 Mazda6 is essentially the 4th generation Mazda 626 as the Mazda6 continues on the G-platform, progressing from the GF-platform 626/Capella to the GG-platform Mazda6.
R2 2008 (2.2 MZR-CD)
New generation RF-based MZR-CD 2.2-litre turbo diesel engine (stroke was lengthened by 8 mm (0.3 in) in comparison to the MZR-CD 2.0 RF engine) was introduced in November 2002 and this powertrain is planned to totally replace RF 2007 and RF 2005 in the future with three (or more, see below) power versions:
- MZR-CD 2.2 High Power: produces 136 kW (185 PS; 182 hp) at 3500 rpm and 400 N·m (300 lb·ft) of torque from 1800 to 3000 rpm, with combined fuel efficiency in 2nd generation Mazda 6: 5.6 L/100 km (50 mpg-imp; 42 mpg-US)/5.7 L/100 km (50 mpg-imp; 41 mpg-US) and CO2 emissions of 149/152 g/km (sedan and hatchback/wagon).
- MZR-CD 2.2 Mid Power: produces 120 kW (163 PS; 161 hp) at 3500 rpm and 360 N·m (270 lb·ft) of torque from 1800 to 3000 rpm, with combined fuel efficiency in 2nd generation Mazda 6: 5.5 L/100 km (51 mpg-imp; 43 mpg-US)/5.6 L/100 km (50 mpg-imp; 42 mpg-US) and CO2 emissions of 147/149 g/km.
- MZR-CD 2.2 Low Power: produces 92 kW (125 PS; 123 hp) at 3500 rpm and 310 N·m (230 lb·ft) of torque from 1800 to 2600 rpm, with combined fuel efficiency in 2nd generation Mazda 6: 5.5 L/100 km (51 mpg-imp; 43 mpg-US)/5.6 L/100 km (50 mpg-imp; 42 mpg-US) and CO2 emissions of 147/149 g/km.
- MZR-CD 2.2 Standard Power in 2nd generation Mazda 3 Axela (internal code BL): produces 110 kW (150 PS; 148 hp) at 3500 rpm and 360 N·m (270 lb·ft) of torque from 1800 to 2600 rpm, with combined fuel efficiency 5.6 L/100 km (50 mpg-imp; 42 mpg-US) and CO2 emissions of 144 g/km.
- MZR-CD 2.2 with Selective Catalytic Reduction system in 2009 facelift Mazda CX-7 produces 127 kW (173 PS; 170 hp) at 3500 rpm and 400 N·m (300 lb·ft) of torgue at a low 2000 rpm, with combined fuel efficiency 7.5 L/100 km (38 mpg-imp; 31 mpg-US) and CO2 emissions of 199 g/km.
2.2 MZR-CD engine features:
- Denso HP3-based common rail with system injection pressure increased to 2000 bar/200 MPa
- common rail injectors that have 10 spray small (0.119 mm) holes (instead of the 6 used on the MZR-CD 2.0) and higher response solenoids
- low compression ratio of 16.3:1, made possible with highly atomizing injectors
- VNT turbocharger with curved vanes and abradable seal
- chain-driven DOHC valve system
- aluminium lower block combined with low-friction, front chain-drive balancer shaft
- newly developed, high thermal resistance DPF system with global-first ceramic support matrix structure
- newly developed EGR cooler
- Euro Stage V emission rating
- new Selective Catalytic Reduction (SCR) system with AdBlue additive significantly reduces NOx emissions (currently only in Mazda CX-7, in special 15.5-litre tank located under the luggage compartment, lasts over 20000 km under normal driving conditions)
- electro-hydraulic power-assisted steering
Engine is mounted in (in order of appearance):
- 2nd generation Mazda 6 Atenza since November 2008 (High, Mid and Low power versions), MZR-CD 2.0-litre turbo diesel remains in the line-up in some markets
- 2nd generation Mazda 3 Axela (High and Standard power versions)
- 1st generation 2009 facelift Mazda CX-7
Engine is planned for (in order of appearance):
- 1st generation Mazda 5 Premacy (High, Mid and Low power versions)
Mazda 2.2 MZR-CD R2 engine has no relation to the family of belt-driven PSA DW12B twin turbo engine.
Next generation 2.2 ZR-CD twin turbo called SKYACTIV-D
Introduced at the 41st Tokyo Motor Show (2009)
- high fuel pressure common-rail system that controls piezo injectors
- aluminium block
- significantly reduced size and weight of reciprocating and rotating parts (aluminum block, lightweight pistons and connecting rods)
- similar weight to the petrol version
- wide-range, high volume EGR
- two stage (twin turbo) turbocharger with high turbopressure over a broader engine rev range
- PM oxidation catalyst-supported diesel particulate filter (DPF) with shorter regeneration
- selective reduction system that adds aqueous urea to exhaust, and a NOx storage system for exhaust gas purification
- 20 percent better fuel efficiency than Mazda's 2.2 MZR-CD