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Mazda diesel engines

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Template:More citations needed Template:Infobox automobile engine Mazda has a long history of building its own diesel engines, with the exception of a few units that were built under license.

Template:Anchor Inline-foursEdit

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Perkins 200 seriesEdit

The Perkins 200 series engines (GA/GB/GC in internal parlance) were manufactured by licensee Toyo Kogo (Mazda) for use in automotive and other applications. Perkins 4.135, 4.154, and 4.182 manufactured replacement engine parts are used interchangeably in the Mazda S2, XA, and HA engines, respectively.

All of these engines have cast iron blocks and heads, two overhead valves per cylinder driven by maintenance-free timing gears, crossflow heads, are indirect injection. US-market B2200 and Ford Ranger trucks - and possibly the others as well - had rotary Bosch VE-style injection pumps, built by Diesel Kiki under license from Bosch.

RF seriesEdit

1983Edit

A diesel variation of the Template:Convert FE engine which shares its square internal dimensions of Template:Convert bore and stroke - it is virtually the same block, with identical bell housing pattern and block dimensions. This could be a testament to the F-block's strength as it was over-built for naturally aspirated duty. Its alloy head is entirely different though, with valves directly actuated rather than the rockers of the FE. The glow plugs are located in remote combustion chambers, with fuel delivered by a mechanical pump. The RF is light, with the original naturally aspirated version weighing in at Template:Convert, Template:Convert; more than the FE.<ref name=whp92>Template:Cite journal</ref> The RF The RF and R2 continue production to this dayTemplate:Update inline as the MZR-CD, with counter-rotating balance-shafts mounted between the engine block and oil pan as well as much evolved head and direct-injection technology. The RF is a SOHC, two valves-per-cylinder engine. One of Mazda's more popular diesel engines, it was also available with a pressure wave supercharger called Comprex.

Applications:

1997Edit

The emission improved version used in the Mazda 323 from mid-1997 adopted a new swirl chamber with an enlarged volume, revised swirl-chamber-to-main-chamber ratio and a narrower throat area. Engine produces Template:Convert at 4500 rpm on a raised 21.7:1 compression ratio, and has an exceptionally wide spread of torque throughout its range, peaking with Template:Convert at 3000 rpm.

Further engine features:

  • optimized intake manifold, with inertia moment effect flow
  • camshaft with Mazda's Multi-Function cam profile theory (increases valve lift to Template:Convert and enhances the engine's volumetric efficiency at lower speed range, resulting in an improved torque output, never falling below Template:Convert between 1500 rpm and 4500 rpm)
  • electrically controlled distributor-type fuel injection pump
  • electronically controlled EGR valve

Engines were mounted in:

  • Mazda 323 P 3D hatchback and 4D sedan since June 1997
  • Mazda 323 5D hatchback since August 1998

Template:Anchor RF-CX ComprexEdit

Template:AnchorRF-T DI (2.0 DiTD)Edit

A direct-injection turbo version Template:Convert with four valves per cylinder, called the DiTD was introduced in the June 1998 Mazda 626 Wagon 2.0 DiTD. Engine has SOHC valve train with rocker arms and mechanically adjusted screws (no hydraulic valve lifters), with Denso V5 rotary injection pump and Denso PCM.

There were three power versions:

Engines were mounted in:

Template:Anchor 2002 (2.0 MZR-CD)Edit

Next evolution of RF engine with common rail direct-injection was introduced in June 2002 European version Mazda 6 with output power Template:Convert or Template:Convert (both at 3500 rpm), depending on engine version (only difference between the two diesel drivetrains is the shape of their respective torque curves, the larger of the two engines being flatter). 2002 RF Mazda diesel engine includes new dual-mass flywheel and common rail Denso injection with max. pressure of 1800 bar, pilot and post-injection for operating smoothness and soft and acoustically unobtrusive combustion. Both versions have same compression ratio 18.3:1. Torque output (both versions have same maximum Template:Convert at 2000 rpm), fuel efficiency and NOx emissions were improved by using:

  • expansive vertical vortex combustion (EVVC), which combines a special piston surface design, with ingenious fuel distribution, to produce a vertical swirl in the combustion chamber
  • variable turbine geometry (VNT) turbocharger

Combined fuel economy is achieving Template:Convert and emission rating Euro Stage III (D4) with on a regular basis mounted catalytic converter with Lambda probe and exhaust-gas recirculation system (EGR). Engines were mounted in (in order of appearance):

  • 1st generation Mazda 6 Atenza (both versions) since June 2002
  • 2nd generation Mazda MPV (only High Power version) since June 2002

Template:Anchor2005 (2.0 MZR-CD)Edit

Production of improved, cleaner and more powerful common rail direct-injection turbocharged version of Mazda RF engine was started with July 2005 Mazda 6 facelift. This drivetrain still has most of typical features of its predecessor including belt-driven SOHC valve train with rocker arms and mechanically adjusted screws (in contrast to frequently mismatched, absolutely different ZSD or PSA DW10 Ford Duratorq engines). Mazda applied several technologies to this MZR-CD engine to achieve Euro Stage IV:

  • new variable geometry turbocharger has 14 percent less inertial moment and is more compact in design (achieved, for instance, by a shorter distance between the exhaust gas inlet and the turbine shaft)
  • Denso's 1800 bar second generation common rail system that, depending on driving conditions, uses multi-stage injection of up to nine times per cycle with six-hole injectors
  • relatively low compression ratio of 16.7:1 improves power output and torque(???), while at the same time helping to lower combustion noise and emissions
  • Template:NOx emissions were reduced by lowering the engine's combustion temperature
  • O2 sensor constantly measures residual oxygen in the exhaust gases and this information is sent to 32-bit powertrain control module (PCM), which continuously optimizes the air/fuel mix

There were two power versions of this engine: Standard Power Template:Convert at 3500 rpm and a maximum torque of Template:Convert at 2000 rpm, High Power Template:Convert at 3500 rpm and a maximum torque of Template:Convert at 2000 rpm. Both versions come with a DPF system standard, which traps soot in a coated ceramic filter. As soon as the filter's storage capacity is exhausted, exhaust gas temperature is raised for a short period (using only diesel pre and post-injection techniques, not any fuel burner additive) and the particles burn off. As a result, the RF 2005 engines emit 80 percent less particulate matter than required by Euro Stage IV standards. Engines were mounted in (in order of appearance):

  • 1st generation Mazda 6/Atenza (both versions) since July 2005
  • Mazda 5/Premacy (both versions) since January 2006
  • 1st generation Mazda 3/Axela (only High Power version) since March 2007

Template:Anchor2007 (2.0 MZR-CD)Edit

Slightly detuned Template:Convert at 3500 rpm and Template:Convert at 2000 rpm) version of RF 2005 engine was introduced in November 2007's second generation Mazda 6. Newly calibrated powertrain control module mapping resulted in better drivability, fuel efficiency and emission performance. This engine has changed layout of the intake/exhaust, with more efficient EGR cooler, better DPF and combined fuel consumption Template:Convert, less than its predecessor. Engine was mounted in (in order of appearance):

  • 2nd generation Mazda 6 Atenza since November 2007

Template:Anchor R2Edit

A diesel variation of the Template:Convert F2 which shares its Template:Convert bore and stroke. Displacement: Template:Convert Power net:(Black Top) Template:Convert (JIS net) at 4050 rpm Torque: Template:Convert - at 2500 rpm Power net:(Silver Top) Template:Convert (JIS net) at 4050 rpm Torque: Template:Convert - at 2500 rpm

Applications:

2008 (2.2 MZR-CD)Edit

New generation RF-based MZR-CD 2.2-litre turbo diesel engine (stroke was lengthened by Template:Convert 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:

2.2 MZR-CD engine features:

  • Denso HP3-based common rail with system injection pressure increased to Template:Convert
  • common rail injectors that have 10 spray small Template:Convert 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 Template:NOx emissions (currently only in Mazda CX-7, in special Template:Convert tank located under the luggage compartment, lasts over Template:Convert 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.

SH 2.2 SKYACTIV-DEdit

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 (Dual Stage two turbo) twin-turbocharger with high turbopressure over a broader engine rev range
  • PM oxidation catalyst-supported diesel particulate filter (DPF) with shorter regeneration
  • 20 percent better fuel efficiency than Mazda's R2 2.2 MZR-CD
  • These engines are subjected to a number of recalls world-wide relating to leaking fuel injectors seals resulting in carbon build-up causing vacuum pump and turbo charger failure.

WL-T 2.5Edit

PSA-based enginesEdit

Y4Edit

Mazda Y4 engine (called 1.4 MZ-CD or 1.4 CiTD) is a rebadged PSA DV4 engine, produced in the PSA engine plant in Trémery or Ford's engine plant in Dagenham. These Template:Convert SOHC 8-valve turbo diesel engines with bore and stroke of Template:Convert, and compression ratio 18.0:1 were shipped to Valencia (now in the Mazda 2 DE to Hiroshima or Hofu plants) and mounted into Mazda 2 DY and Mazda 2 DE together with a 5-speed manual transmission. The engine's maximum power is Template:Cvt at 4,000 rpm, maximum torque Template:Cvt at 1,750 rpm.

Engine features:

  • SOHC belt-driven
  • aluminium cylinder block with cast iron liners
  • dual-mass flywheel
  • drive by wire accelerator pedal
  • VNT turbocharger, without intercooling
  • Euro Stage III emission rating; Euro Stage IV with DPF system, catalytic additive in separate 1.8 L tank, refreshed every Template:Cvt

Y6Edit

The Mazda Y6 engine (called 1.6 MZ-CD or 1.6 CiTD) is a rebadged PSA DV6 engine, produced in the PSA engine plant in Trémery and the Ford engine plant in Dagenham. This Template:Convert DOHC 16-valve turbo diesel engine has a bore and stroke of Template:Convert, and a compression ratio of 18.3:1. The engines are shipped to Hiroshima and mounted into the Mazda 3 (Axela) and Mazda 2 DE in three versions coupled to 5 or 6-speed manuals (Getrag-Ford developed, J65M-R) or 4-speed automatic "Activematic" transmission:

Engine features:

  • DOHC belt-driven
  • aluminium cylinder block with cast iron liners
  • dual-mass flywheel
  • second generation Bosch common rail injection system with pilot injection phase and Template:Convert pressure
  • 6-hole injectors
  • Bosch EDC16 powertrain control module
  • drive by wire accelerator pedal
  • Garrett GT15 (VNT15) turbocharger
  • large front mount intercooler (larger than 2.0 MZR-CD)
  • Euro Stage III emission rating (Euro Stage IV with DPF system, catalytic additive in separate 1.8 L tank, refreshed every Template:Convert

Template:AnchorInline-sixesEdit

See alsoEdit

ReferencesEdit

Template:Reflist

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