ThePSA EW/DW engine is a family ofstraight-4 black-top^[1]automobile engines^[2] manufactured by thePSA Group for use in theirPeugeot andCitroën automobiles. The EW/DW family was introduced in 1998 as a replacement for theXU engine.^[3] Some DW engines are produced as part of ajoint-venture withFord Motor Company.

EW/DW engine
Overview
Manufacturer	PSA Peugeot Citroën
Production	1998–present
Layout
Configuration	Straight-four engine
Displacement	1.7 L (1,749 cc) 1.9 L (1,868 cc) 2.0 L (1,968 cc) 2.0 L (1,997 cc) 2.2 L (2,179 cc) 2.2 L (2,231 cc)
Cylinder bore	82.2 mm (3.24 in) 82.7 mm (3.26 in) 85 mm (3.35 in) 86 mm (3.39 in)
Piston stroke	81.4 mm (3.20 in) 88 mm (3.46 in) 96 mm (3.78 in)
Valvetrain	SOHC 2 valves x cyl. DOHC4 valves x cyl. withVVT
Combustion
Turbocharger	Variable-geometry withintercooler (some versions)
Fuel system	Indirect injection Common raildirect injection Gasoline direct injection
Fuel type	Petrol,Diesel
Cooling system	Water-cooled
Output
Power output	69–203 PS (51–149 kW; 68–200 hp)
Torque output	127–370 N⋅m (94–273 lb⋅ft)
Emissions
Emissions target standard	Euro 3 – Euro 6
Emissions control systems	Catalytic converter,SCR
Chronology
Predecessor	PSA XU engine (for petrol engines) PSA XUD engine (for diesel engines)
Successor	Prince engine (for petrol engines) Ingenium engine (for diesel engines Jaguar Land Rover only)

The EW/DW uses many parts from the XU, most notably thecrankshaft, but is built with lighter materials. The EW name is used for the petrol engines ("e" foressence) and DW for Diesel engines.

All EWs areDOHCmultivalve with displacement from 1.7 to 2.2 L (1,749 to 2,231 cc). They are mainly used forlarge family cars andexecutive cars, as well aslarge MPVs, although the 2.0 L is also used for somehot hatch models.

The DW started with anSOHC 2-valve design between 2.0 and 2.0 L (1,968 and 1,997 cc), later receiving DOHC andfour valves per cylinder upon the introduction of the 2.2 L in 2000 with theCitroën C5 andPeugeot 607. Turbocharged versions started usingcommon rail and received the commercial designationHDi. The DW10 served as the basis for theFord/PSA engine partnership using second generation common rail and avariable-geometry turbocharger for the first time on the 2.0 L design.

TheDW8 is for all intents and purposes an evolution of theXUD9 and was the only diesel engine in the family not to feature a turbocharger or common-rail direct injection. It was mainly used invans such as theCitroën Berlingo andPeugeot Partner but can also be found in more affordable versions of the Peugeot 206 and 306. The DW8 was phased out in 2007 as it does not pass Euro 4 emissions regulations (it is aEuro 3 engine^[1]). The DW8 is matched to theBE manual 5-speed and has 127 N⋅m (94 lb⋅ft) of torque.^[4] This is known as the 1WZ engine in Toyota vehicles.

Specifications

Displacement: 1.9 L (1,868 cc)

Valves: 8 valve,single overhead cam

Bore x Stroke: 82.2 mm × 88 mm (3.24 in × 3.46 in)

Compression Ratio: 23.0:1^[5]

Power output: 71 PS (52 kW; 70 hp)

Torque: 127 N⋅m (94 lb⋅ft) at 2500 rpm

Production Start Date: 1 June 2000

The 2.0 LDW10 was the first PSA Diesel engine to featurecommon raildirect injection, and was given the commercial designationHDi. It has a bore and a stroke of 85 mm × 88 mm (3.35 in × 3.46 in) for a total displacement of 2.0 L (1,997 cc), replacing theXUD9 in 1999. It was initially available in 90 PS (66 kW; 89 hp) form, with two valves per cylinder and a non-intercooled turbo. Anintercooler was added later in the year, boosting power to 109 PS (80 kW; 108 hp).

Initially available in the midsized models, such as theCitroën Xsara andXantia andPeugeot 306,406 andPeugeot 206 it was soon spread across the PSA range, such as the LCVs, while a 16-valve version(RHW), with 109 PS (80 kW; 108 hp), was used in the large MPVs built in association withFiat.Suzuki was a customer for these powerplants, using them in the EuropeanVitara,Grand Vitara, andXL-7. Eurovan-based commercial vans, theCitroën Jumpy,Peugeot Expert andFiat Scudo were available with a 94 PS (69 kW; 93 hp) DW10 BTED engine, which is essentially an intercooled version of the original 90 PS (66 kW; 89 hp) design.

The DW10 was used as the basis for the new family ofDuratorq Diesel engines co-developed withFord andVolvo it is used in theFocus,Kuga,Mondeo Mk3,Mondeo Mk4,C-Max andC30/S40/V50/C70, besides various Citroën and Peugeot passenger models. The DOHC 16-valve powerplants were mated to a second generation common rail injection system and avariable-geometry turbocharger, pushing power to 136 PS (100 kW; 134 hp) (RHR). It is fitted with a six-speedmanual transmission or six-speed Aisin-automatic transmission (inCitroën C5 from summer 2004 onwards).

TheDW10BTED4E5 andDW10C areEuro 5-compliant, and therefore still available for sale in Europe.^[2]

2014Euro 6 variant DW10FC and DW10FD introducedselective catalytic reduction emissions control technology.

This engine is known as the 4WZ when installed in Toyota vehicles such as Toyotasversion of theCitroën Jumpy.

The 2.2 L (2,179 cc)DW12 has a bore and a stroke of 85 mm × 96 mm (3.35 in × 3.78 in). Unlike the initial DW10 designs, it was fitted with 16 valves from the beginning, and made its debut in the 2000 with theCitroën C5,Peugeot 406, Peugeot 406 Coupe, andPeugeot 607, being used only in the larger models. In 2006 it was added to the PSA/Ford family, with power reaching 170 PS (125 kW; 168 hp).Peugeot added the engine as an option for thePeugeot 407 and the now facelifted607, between the 2.0 DW10 and 2.7 DT17.Land Rover used this engine in theFreelander 2,Discovery Sport andRange Rover Evoque. Available as both 160ps or 190ps, Peugeot 4007 and Citroën C-Crosser used the same motor. The unit was used in a longitudinal mounting in the Jaguar XF from 2012 until 2015 in 163 PS or 200 PS, though some early 2012 cars were available as 190 PS. A different 2.2 L engine, Ford'sZSD-422 with a displacement of 2.2 L (2,198 cc) was used in the Citroën and Peugeot LCV range of vans.

In India

DW12 has been used byTata Motors andMahindra and Mahindra

2.2 DicorTATA used DW12 in their vehicles likeTata Safari,Tata Hexa, aria, Xenon they launched the engine with 2007 Safari as 2.2L Dicor tech engine then carried to Safari Storme aria, xenon and Hexa till 2020 whenBharat Stage 6 emission standards hit Tata discountinued 2.2 Dicor from market.

M HAWKMahindra re-engineered with AVL made new famielyM HAWK was introduced in 2009 withMahindra Scorpio with CRDeCRDI andVGT it was followed in pickup verson, then in 2012 it was carried toMahindra Xylo same engine, in 2011Mahindra XUV500 came with transfers layout with 5th Gen VGT in 2018 XUV500 6th gen e-VGT, in 2020 Mahindra updated the engine to meet BS6 and BS6.2 in 2023Bharat Stage 6 and launched gen2 of M HAWK (4D22) inTHAR,XUV700,Scorpio N,Scorpio,THAR ROXX it was in new platform compare to the gen1 M HAWK.

TheDW12C is aEuro 5-compliant, high-output version.^[2]

TheDW12 RU is an updated version that meetsEuro 6d emission standards, and is intended for light commercial vehicle applications where it replaces the DW10 FU.^[6] TheCitroën Jumper andPeugeot Boxer (2019–) are powered by this engine. It comes in power ratings of 120 PS/300 Nm, 140 PS/340 Nm and 165 PS/370 Nm.^[7]

TheEW7 has abore and astroke of 82.7 mm × 81.4 mm (3.26 in × 3.20 in), for a displacement of 1.7 L (1,749 cc). It was used as an entry-level engine for theCitroën C5 andCitroën Xsara Picasso, thePeugeot 406, and thePeugeot 407.

As of January 1, 2011 and the requirements ofEuro 5 emission regulations, the EW7 (Euro 4 only^[1]) is no longer available in Europe. For most use, it was replaced by the 1.6 litre turbocharged version of thePrince engine.

TheEW10 has a bore and a stroke of 85 mm × 88 mm (3.35 in × 3.46 in), for a displacement of 2.0 L (1,997 cc). It is used widely throughout the PSA Group, including theCitroën C4,C5,Citroën Xsara,Citroën Xsara Picasso andPeugeot 206,307 and407. Agasoline direct injection variant, called EW10 D and marketed asHPi, was briefly used in the Citroën C5 andPeugeot 406 starting in 2001, but was discontinued in 2003 due to low sales.

The EW10 J4S variant is a high performance version used in the 206 GTI 180, 206 RC, 307 Féline, 307 cc and C4 VTS. Power was raised to 177 PS (130 kW; 175 hp), although the two French brands round it up to 180 PS (132 kW; 178 hp) in advertising. EW10 A is a further development of the EW10 J4, presenting somewhat higher power and torque due to the introduction ofVariable valve timing (VVT).Fuel consumption is also decreased. Power is 140 PS (103 kW; 138 hp) at 6000 rpm and torque 200 N⋅m (148 lb⋅ft) at 4000 rpm. Citroën usually states 143 PS (105 kW; 141 hp) and Peugeot 140 PS for the same 140 PS (103 kW; 138 hp) engine.

As of January 1, 2010 and the requirements ofEuro 5 emission regulations, the EW10 (Euro 4 only^[1]) is no longer available in Europe. For most use, it is replaced by the 1.6 litre turbocharged version partially based on thePrince engine.

TheEW12 was introduced to replace the low-pressure turbo variant of the XU10. It has a bore and stroke of 86 mm × 96 mm (3.39 in × 3.78 in), for a displacement of 2.2 L (2,231 cc). Citroën only uses it on theC8 MPV, while Peugeot, which has more a sporty image, uses it in the406 SRi and 406 Coupe,407, the607 executive model and807 MPV.

As of January 1, 2011 and the requirements of Euro 5 emission regulations, the EW12 (Euro 4 only^[1]) is no longer available in Europe. It was replaced by the 1.6 litre turbochargedPrince engine.

• List of PSA engines
• Ford Duratorq engine
• PSA HDi engine

• "PEUGEOT CITROËN PSA specific DTC (fault codes)". Archived fromthe original on 2016-04-03.