Mazda diesel engines explained

Mazda diesel engines
Manufacturer:Mazda
Configuration:Inline-4, Inline-6
Valvetrain:SOHC, DOHC
Block:Cast iron, Aluminum
Head:Alloy
Fueltype:Diesel
Fuelsystem:Common rail direct injection
Coolingsystem:Water cooled
Turbocharger:Garrett GT15 (VNT15) variable geometry with intercooler
Management:Bosch
Displacement:1399cc
1560cc
1720cc
1998cc
2184cc
2209cc
2499cc
2522cc
2701cc
2892cc
2956cc
2977cc
3455cc
3663cc
3783cc
4021cc
4052cc
4553cc
5494cc
Bore:752NaN2
73.7mm
862NaN2
932NaN2
952NaN2
Stroke:822NaN2
862NaN2
88.32NaN2
922NaN2
94mm
1022NaN2
Compression:16.3:1, 16.7:1, 18.0:1, 18.3:1, 21.7:1
Power:NaN0NaN0
Torque:NaN0NaN0

Mazda has a long history of building its own diesel engines, with the exception of a few units that were built under license.

Inline-fours

Perkins 200 series

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 series

1983

A diesel variation of the 1998cc FE engine which shares its square internal dimensions of NaN2NaN2 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 146kg (322lb), 10kg (20lb); more than the FE.[2] The RF The RF and R2 continue production to this day 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:

1997

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 520NaN0 at 4500 rpm on a raised 21.7:1 compression ratio, and has an exceptionally wide spread of torque throughout its range, peaking with 1280NaN0 at 3000 rpm.

Further engine features:

Engines were mounted in:

RF-CX Comprex

RF-T DI (2.0 DiTD)

A direct-injection turbo version 1010NaN0 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:

2002 (2.0 MZR-CD)

Next evolution of RF engine with common rail direct-injection was introduced in June 2002 European version Mazda 6 with output power 890NaN0 or 1000NaN0 (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 3100NaN0 at 2000 rpm), fuel efficiency and NOx emissions were improved by using:

Combined fuel economy is achieving 6.5L/100 km 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):

2005 (2.0 MZR-CD)

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:

There were two power versions of this engine: Standard Power 890NaN0 at 3500 rpm and a maximum torque of 3200NaN0 at 2000 rpm, High Power 1050NaN0 at 3500 rpm and a maximum torque of 3600NaN0 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):

2007 (2.0 MZR-CD)

Slightly detuned 1030NaN0 at 3500 rpm and 3300NaN0 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 5.6L/100 km, less than its predecessor.Engine was mounted in (in order of appearance):

R2

A diesel variation of the 2184cc F2 which shares its NaNmm bore and stroke.Displacement:21841NaN1Power net:(Black Top)51.50NaN0 (JIS net) at 4050 rpmTorque:1420NaN0 - at 2500 rpmPower net:(Silver Top)58.10NaN0 (JIS net) at 4050 rpmTorque:1710NaN0 - at 2500 rpm

Applications:

2008 (2.2 MZR-CD)

New generation RF-based MZR-CD 2.2-litre turbo diesel engine (stroke was lengthened by 8mm 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:

Engine is mounted in (in order of appearance):

Engine is planned for (in order of appearance):

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-D

Introduced at the 41st Tokyo Motor Show (2009)

WL-T 2.5

PSA-based engines

Y4

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 1399cc SOHC 8-valve turbo diesel engines with bore and stroke of NaNmm, 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 at 4,000 rpm, maximum torque at 1,750 rpm.

Engine features:

Y6

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 1560cc DOHC 16-valve turbo diesel engine has a bore and stroke of NaN2NaN2, 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:

Inline six

See also

Notes and References

  1. Book: Ozeki, Kazuo . ja:日本のトラック・バス 1918~1972 . Japanese Trucks and Buses 1918-1972 . Miki Press . 2007 . 156 . Tokyo . Japanese . 978-4-89522-494-9 .
  2. . Wh0684 . Mazda's diesel debut . Mike . McCarthy . 91 . June 1984 . Murray Publishers . Sydney, Australia .
  3. Book: Automobil Revue 1991 . Büschi . Hans-Ulrich . Hallwag AG . Berne, Switzerland . German, French . 384 . 86 . March 1991 . 3-444-00514-8 .
  4. http://www.autokelly.sk/Catalog.aspx#PATH=3345620;8429419;8429424|CT=16|PCT=16|LNG=1
  5. http://www.autokelly.sk/Catalog.aspx#PATH=3345620;8429419;8429441|CT=16|PCT=16|LNG=1