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Engine of the month

Mazda R2AA

R2 2008 (2.2 MZR-CD)

New generation RF-based MZR-CD 2.2-litre turbo diesel engine which replaced the MZR-CD 2.0 RF engine and this powertrain is planned to totally replace RF 2007 and RF 2005 in the future.

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

Mazda 2.2 MZR-CD R2 engine has no relation to the family of belt-driven PSA DW12B twin turbo engine.­

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