XA - - License built Perkins 4.154 related to HA and S2, used in 1970 Mazda E2500 and 1971 Mazda Titan, and some Bobcat skid-steer loaders. A six-cylinder version of this is called the "YA".
HA - - License built Perkins 4.182 related to S2 and XA
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
A diesel variation of the FE engine which shares its square internal dimensions of 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, ; more than the FE. 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:
Latest emission improved version used in Mazda 323 adopts a new swirl chamber with an enlarged volume, revised swirl-chamber-to-main-chamber ratio and a narrower throat area. Engine produces at 4500 rpm on a raised 21.7:1 compression ratio, and has an exceptionally wide spread of torque throughout its range, peaking with at 3000 rpm. Further engine features:
optimized intake manifold, with inertia moment effect flow
camshaft with Mazda's Multi-Function cam profile theory
A direct-injection turbo version 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, with Denso V5 rotary injection pump and Denso PCM. There were three power versions:
at 4000 rpm with maximum torque at 1800 rpm
at 4000 rpm with maximum torque at 1800–2200 rpm
at 4000 rpm with maximum torque at 2000–2600 rpm
Engines were mounted in:
Mazda 323 5D hatchback and 4D sedan since August 1998
Mazda 323 5D hatchback and 4D sedan since May 2001
Mazda 626 Capella since June 1998
Mazda 626 Capella since October 2000
Mazda Premacy as DE 2.0L Euro III
RF 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 or , depending on engine version. 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, fuel efficiency and NOx emissions were improved by using:
expansive vertical vortex combustion, which combines a special piston surface design, with ingenious fuel distribution, to produce a vertical swirl in the combustion chamber
Combined fuel economy is achieving and emission rating Euro Stage III with on a regular basis mounted catalytic converter with Lambda probe and exhaust-gas recirculation system. Engines were mounted in :
1st generation Mazda 6 Atenza since June 2002
2nd generation Mazda MPV since June 2002
RF 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. Mazda applied several technologies to this MZR-CD engine to achieve Euro Stage IV:
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
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, which continuously optimizes the air/fuel mix
There were two power versions of this engine: Standard Power at 3500 rpm and a maximum torque of at 2000 rpm, High Power at 3500 rpm and a maximum torque of 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 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 :
Slightly detuned at 3500 rpm and 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, less than its predecessor. Engine was mounted in :
A diesel variation of the F2 which shares its bore and stroke. Displacement: Power net: @ 4050 rpm Torque: - @ 2500 rpm Power net: @ 4050 rpm Torque: - @ 2500 rpm Applications:
New generation RF-based MZR-CD 2.2-litre turbo diesel engine was introduced in November 2002 and this powertrain is planned to totally replace RF 2007 and RF 2005 in the future with three power versions:
MZR-CD 2.2 High Power: produces at 3500 rpm and of torque from 1800 to 3000 rpm, with combined fuel efficiency in 2nd generation Mazda 6: / and CO2 emissions of 149/152 g/km.
MZR-CD 2.2 Mid Power: produces at 3500 rpm and of torque from 1800 to 3000 rpm, with combined fuel efficiency in 2nd generation Mazda 6: / and CO2 emissions of 147/149 g/km.
MZR-CD 2.2 Low Power: produces at 3500 rpm and of torque from 1800 to 2600 rpm, with combined fuel efficiency in 2nd generation Mazda 6: / and CO2 emissions of 147/149 g/km.
MZR-CD 2.2 Standard Power in 2nd generation Mazda 3 Axela : produces at 3500 rpm and of torque from 1800 to 2600 rpm, with combined fuel efficiency and CO2 emissions of 144 g/km.
MZR-CD 2.2 with Selective Catalytic Reduction system in 2009 facelift Mazda CX-7 produces at 3500 rpm and of torque at a low 2000 rpm, with combined fuel efficiency and CO2 emissions of 199 g/km.
2.2 MZR-CD engine features:
Denso HP3-based common rail with system injection pressure increased to
common rail injectors that have 10 spray small holes 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
20 percent better fuel efficiency than Mazda's R2 2.2 MZR-CD
WL-T 2.5
2.5 Diesel Turbo 2499cc
81kW / 109Hp Power @ 3500rpm
265NM / 196Ft·lb Torque @ 2000rpm
Found in Mazda Bounty, Mazda Bongo Friendee, Ford Courier Ford Freda and Ford Ranger 1998 - 2006
Y4
Mazda Y4 engine is a rebadged PSA DV4 engine, produced in the PSA engine plant in Trémery or Ford's engine plant in Dagenham. These SOHC 8-valve turbo diesel engines with bore and stroke of, and compression ratio 18.0:1 were shipped to Valencia 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:
SOH—÷ emission rating (Euro Stage IV with DPF system, catalytic additive in separate 1.8 L tank, refreshed every
Y6
The Mazda Y6 engine is a rebadged PSA DV6 engine, produced in the PSA engine plant in Trémery and the Ford engine plant in Dagenham. This DOHC 16-valve turbo diesel engine has a bore and stroke of, and a compression ratio of 18.3:1. The engines are shipped to Hiroshima and mounted into the Mazda 3 and Mazda 2 DE in three versions coupled to 5 or 6-speed manuals or 4-speed automatic "Activematic" transmission:
