The PSA EW/DW engine is a family of

straight-4 A straight-four engine (also called an inline-four) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft. The vast majority of automotive four-cylinder engines use a straight-four layout (with the ...

black-top

automobile A car or automobile is a motor vehicle with wheels. Most definitions of ''cars'' say that they run primarily on roads, seat one to eight people, have four wheels, and mainly transport people instead of goods. The year 1886 is regarded ...

engines manufactured by the

PSA Group The PSA Group (), legally known as Peugeot S.A. (Peugeot Société Anonyme, trading as Groupe PSA; formerly known as PSA Peugeot Citroën from 1991 to 2016) was a French multinational automotive manufacturing company which produced automobiles ...

for use in their

Peugeot Peugeot (, , ) is a French brand of automobiles owned by Stellantis. The family business that preceded the current Peugeot companies was founded in 1810, with a steel foundry that soon started making hand tools and kitchen equipment, and then ...

and

Citroën Citroën () is a French automobile brand. The "Automobiles Citroën" manufacturing company was founded in March 1919 by André Citroën. Citroën is owned by Stellantis since 2021 and previously was part of the PSA Group after Peugeot acquired 8 ...

automobiles. The EW/DW family was introduced in 1998 as a replacement for the XU engine. All DW engines are produced as part of a

joint-venture A joint venture (JV) is a business entity created by two or more parties, generally characterized by shared ownership, shared returns and risks, and shared governance. Companies typically pursue joint ventures for one of four reasons: to acce ...

with

Ford Motor Company Ford Motor Company (commonly known as Ford) is an American multinational automobile manufacturer headquartered in Dearborn, Michigan, United States. It was founded by Henry Ford and incorporated on June 16, 1903. The company sells automobi ...

. The EW/DW uses many parts from the XU, most notably the

crankshaft A crankshaft is a mechanical component used in a piston engine to convert the reciprocating motion into rotational motion. The crankshaft is a rotating shaft containing one or more crankpins, that are driven by the pistons via the connecti ...

, but is built with lighter materials. The EW name is used for the petrol engines ("e" for '' essence'') and DW for Diesel engines. All EWs are DOHC multivalve with displacement from . They are mainly used for

large family car The D-segment is the 4th category of the European segments for passenger cars, and is described as "large cars". It is equivalent to the Euro NCAP "large family car" size class, and the present-day definition of the mid-size car category use ...

s and

executive car Executive car is a British term for a large car which is equivalent to the European E-segment and American full-size classifications. Executive cars are larger than compact executive cars (and the non-luxury equivalent mid-size cars), and sm ...

s, as well as large MPVs, although the 2.0 L is also used for some hot hatch models. The DW started with an

SOHC An overhead camshaft (OHC) engine is a piston engine where the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combustion cha ...

2-valve design between , later receiving DOHC and four valves per cylinder upon the introduction of the 2.2 L in 2000 with the Citroën C5 and Peugeot 607. Turbocharged versions started using

common rail Common rail direct fuel injection is a direct fuel injection system built around a high-pressure (over ) fuel rail feeding solenoid valves, as opposed to a low-pressure fuel pump feeding unit injectors (or pump nozzles). High-pressure injecti ...

and received the commercial designation HDi. The DW10 served as the basis for the Ford/PSA engine partnership using second generation common rail and a variable-geometry turbocharger for the first time on the 2.0 L design.

DW8

The DW8 is for all intents and purposes an evolution of the XUD9 and was the only diesel engine in the family not to feature a turbocharger or common-rail direct injection. It was mainly used in

van A van is a type of road vehicle used for transporting goods or people. Depending on the type of van, it can be bigger or smaller than a pickup truck and SUV, and bigger than a common car. There is some varying in the scope of the word across th ...

s such as the

Citroën Berlingo The Citroën Berlingo and Peugeot Partner are a range of multi-purpose vehicles produced by the PSA Group and later by Stellantis. They are sold both as panel vans for use as commercial vehicles and as a passenger variant with rear seats and ...

and Peugeot 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 a Euro 3 engine). The DW8 is matched to the ''BE'' manual 5-speed and has of torque. Specifications Displacement: Valves: 8 valve, single overhead cam Bore x Stroke: Compression Ratio: 23.0:1 Power output: Torque: at 2500 rpm Production Start Date: 1 June 2000

DW10

The 2.0 L DW10 was the first PSA Diesel engine to feature

direct injection, and was given the commercial designation ''HDi''. It has a bore and a stroke of for a total displacement of , replacing the XUD9 in 1999. It was initially available in form, with two valves per cylinder and a non-intercooled turbo. An

intercooler An intercooler is a heat exchanger used to cool a gas after compression. Often found in turbocharged engines, intercoolers are also used in air compressors, air conditioners, refrigeration and gas turbines. Internal combustion engines ...

was added later in the year, boosting power to . Initially available in the midsized models, such as the Citroën Xsara and Xantia and Peugeot 306,

406 __NOTOC__ Year 406 ( CDVI) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Arcadius and Probus (or, less frequently, year 1159 ''Ab u ...

and Peugeot 206 it was soon spread across the PSA range, such as the LCVs, while a 16-valve version(RHW), with , was used in the large MPVs built in association with

Fiat Fiat Automobiles S.p.A. (, , ; originally FIAT, it, Fabbrica Italiana Automobili di Torino, lit=Italian Automobiles Factory of Turin) is an Italian automobile manufacturer, formerly part of Fiat Chrysler Automobiles, and since 2021 a subsidiar ...

Suzuki is a Japanese multinational corporation headquartered in Minami-ku, Hamamatsu, Japan. Suzuki manufactures automobiles, motorcycles, all-terrain vehicles (ATVs), outboard marine engines, wheelchairs and a variety of other small internal co ...

was a customer for these powerplants, using them in the European Vitara,

Grand Vitara The Suzuki Vitara is a series of SUVs produced by Suzuki in five generations since 1988. The second, third-generation and 2022 models are known as the Suzuki Grand Vitara, with the fourth generation eschewing the "Grand" prefix. In Japan and a ...

, and Grand Vitara XL-7. Eurovan-based commercial vans, the

Citroën Jumpy The Citroën Jumpy (badged Citroën Dispatch in some countries) is a light commercial van jointly developed by Fiat Group and PSA Group (currently Stellantis), and mainly manufactured by Sevel, a joint venture between the two companies since 1 ...

Peugeot Expert Peugeot (, , ) is a French brand of automobiles owned by Stellantis. The family business that preceded the current Peugeot companies was founded in 1810, with a steel foundry that soon started making hand tools and kitchen equipment, and then ...

and

Fiat Scudo Fiat Automobiles S.p.A. (, , ; originally FIAT, it, Fabbrica Italiana Automobili di Torino, lit=Italian Automobiles Factory of Turin) is an Italian automobile manufacturer, formerly part of Fiat Chrysler Automobiles, and since 2021 a subsidiar ...

were available with a DW10 BTED engine, which is essentially an intercooled version of the original design. The DW10 was used as the basis for the new family of Duratorq Diesel engines co-developed with Ford, and it is used in the Focus, Kuga, Mondeo, C-Max and Volvo C30/ S40/ V50, besides various Citroën and Peugeot passenger models. The DOHC 16-valve powerplants were mated to a second generation common rail injection system and a variable-geometry turbocharger, pushing power to (RHR). It is fitted with a six-speed

manual transmission A manual transmission (MT), also known as manual gearbox, standard transmission (in Canada, the United Kingdom, and the United States), or stick shift (in the United States), is a multi-speed motor vehicle transmission (mechanics), transmission ...

or six-speed Aisin-

automatic transmission An automatic transmission (sometimes abbreviated to auto or AT) is a multi-speed transmission used in internal combustion engine-based motor vehicles that does not require any input from the driver to change forward gears under normal driving ...

(in Citroën C5 from summer 2004 onwards). The DW10BTED4E5 and DW10C are Euro 5-compliant, and therefore still available for sale in Europe. 2014

Euro 6 The European emission standards are vehicle emission standards for pollution from the use of new land surface vehicles sold in the European Union and EEA member states and the UK, and ships in EU waters. The standards are defined in a ser ...

variant DW10FC and DW10FD introduced

selective catalytic reduction Selective catalytic reduction (SCR) is a means of converting nitrogen oxides, also referred to as with the aid of a catalyst into diatomic nitrogen (), and water (). A reductant, typically anhydrous ammonia (), aqueous ammonia (), or a urea () s ...

emissions control technology.

DW12

The DW12 has a bore and a stroke of . Unlike the initial DW10 designs, it was fitted with 16 valves from the beginning, and made its debut in the 2000 with the Citroën C5,

Peugeot 406 The Peugeot 406 is a large family car that was produced by French automaker Peugeot Peugeot (, , ) is a French brand of automobiles owned by Stellantis. The family business that preceded the current Peugeot companies was founded in 1810, wi ...

, Peugeot 406 Coupe and Peugeot 607, being used only in the larger models. In 2006 it was added to the PSA/Ford family, with power reaching .

Land Rover Land Rover is a British brand of predominantly four-wheel drive, off-road capable vehicles, owned by multinational car manufacturer Jaguar Land Rover (JLR), since 2008 a subsidiary of India's Tata Motors. JLR currently builds Land Rove ...

used this engine in the Freelander 2, Discovery Sport and

Range Rover Evoque The Land Rover Range Rover Evoque (generally known simply as the Range Rover Evoque) is a subcompact luxury crossover SUV developed and produced by Jaguar Land Rover, a British car manufacturer, under their Land Rover marque. The original Evo ...

. 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's ZSD-422 with a displacement of was used in the Citroën and Peugeot LCV range of vans. In India The same engine, after being reworked on independently by AVL (engineering company) has been used extensively by Tata Motors in their Safari (1st Gen), Aria, Hexa, Xenon and Winger and by

Mahindra and Mahindra Mahindra & Mahindra Limited (M&M) is an Indian multinational automotive manufacturing corporation headquartered in Mumbai. It was established in 1945 as Mahindra & Mohammed and later renamed as Mahindra & Mahindra. Part of the Mahindra Group, ...

in their XUV500 and Scorpio models. The Tata Hexa and Tata Safari (2016+) have an output of 156 PS while the Mahindra XUV500 made 155PS. While Tata Motors discontinued the engine in its Passenger Vehicle Segment in 2020 with the onset of the Bharat Stage 6 emission standards, only using a commercial grade 98 PS tuned 2.2L in the

Tata Winger The Tata Winger is a light commercial van produced by the Indian automaker Tata Motors in 2007. It is a rebadged version of the Renault Trafic Mk1 Phase 3 van, but fitted with Tata's own 2 litre diesel engines, competing with the Volkswagen Tra ...

, Mahindra recently discontinued the XUV500 which only leaves the

Mahindra Scorpio The Mahindra Scorpio is a mid-size SUV manufactured by the Indian automaker Mahindra & Mahindra since 2002. It was Mahindra's first model to be built for the global market. The Scorpio was conceptualized and designed by the in-house integrated ...

using the engine, which is also at the end of its life cycle. The DW12C is a Euro 5-compliant, high-output version. The DW12 RU is an updated version that meets Euro 6d emission standards, and is intended for light commercial vehicle applications where it replaces the DW10 FU. The

Citroën Jumper The Fiat Ducato is a light commercial vehicle jointly developed by FCA Italy and PSA Group (currently Stellantis), and mainly manufactured by Sevel, a joint venture between the two companies since 1981. It has also been sold as the Citroën C25, ...

and

Peugeot Boxer Peugeot (, , ) is a French brand of automobiles owned by Stellantis. The family business that preceded the current Peugeot companies was founded in 1810, with a steel foundry that soon started making hand tools and kitchen equipment, and then ...

(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.

EW7

The EW7 has a bore and a

stroke A stroke is a disease, medical condition in which poor cerebral circulation, blood flow to the brain causes cell death. There are two main types of stroke: brain ischemia, ischemic, due to lack of blood flow, and intracranial hemorrhage, hemorr ...

of , for a displacement of . It is used as an entry level engine for the Citroën C5, the

and the

Peugeot 407 The Peugeot 407 is a large family car (D-segment) produced by the French automaker Peugeot, from 2004 to 2011. It was available in saloon, coupé and estate variants, with both diesel and petrol engines. The petrol engines ranged from 1.8 to 3. ...

. The EW7A is Euro 4 only, and no longer for sale in Europe as of January 1, 2011.

EW10

The EW10 has a bore and a stroke of , for a displacement of . It is used widely throughout the PSA Group, including the

Citroën C4 The Citroën C4 is a small family car/compact car (also classified as a compact crossover SUV since 2020) produced under their Citroën marque, from the French automaker PSA Group, and later Stellantis. It was positioned to be the successor to ...

, C5, Citroën Xsara Picasso and Peugeot 206,

307 __NOTOC__ Year 307 ( CCCVII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Severus and Maximinus (or, less frequently, year 1060 ...

and 407. A

gasoline direct injection Gasoline direct injection (GDI), also known as petrol direct injection (PDI), is a mixture formation system for internal combustion engines that run on gasoline (petrol), where fuel is injected into the combustion chamber. This is distinct fro ...

variant, called EW10 D and marketed as HPi, was briefly used in the Citroën C5 and

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 , although the two French brands round it up to in advertising. EW10 A is a further development of the EW10 J4, presenting somewhat higher power and torque due to the introduction of

Variable valve timing In internal combustion engines, variable valve timing (VVT) is the process of altering the timing of a valve lift event, and is often used to improve performance, fuel economy or emissions. It is increasingly being used in combination with var ...

(VVT).

Fuel consumption A fuel is any material that can be made to react with other substances so that it releases energy as thermal energy or to be used for work. The concept was originally applied solely to those materials capable of releasing chemical energy but ...

is also decreased. Power is at 6000 rpm and torque at 4000 rpm. Citroën usually states and Peugeot 140 PS for the same engine. As of January 1, 2010 and the requirements of Euro 5 emission regulations, the EW10 ( Euro 4 only) is no longer available in Europe. For most use, they are replaced with Prince engines.

EW12

The EW12 was introduced to replace the low-pressure turbo variant of the XU10. It has a bore and stroke of , for a displacement of . Citroën only uses it on the C8 MPV, while Peugeot, which has more a sporty image, uses it in the

SRi and 406 Coupe, 407, the 607 executive model and 807 MPV. The EW12J4 is Euro 4 only, and no longer for sale in Europe as of January 1, 2011.

References

External links

* {{DEFAULTSORT:Psa Ew Dw Engine EW DW Straight-four engines Diesel engines by model Gasoline engines by model

DW8