PSA EW/DW engine
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The PSA EW/DW engine is a family of straight-4 petrol and diesel engines manufactured by the PSA Group for use in their Peugeot and Citroën automobiles. The EW/DW family was introduced in 1998 as a replacement for the XU engine.
The EW/DW uses many parts from the XU, most notably the crankshaft, 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 1749 to 2231 cc. They are mainly used for large family cars and executive cars, as well as large MPVs, although the 2.0 L is also used for some hot hatch models.
The DW started with an SOHC 2-valve design between 1868 and 1997 cc, 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 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.
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[edit] EW7
The EW7 has a bore of 82.7 mm and a stroke of 81.4 mm, for a displacement of 1749 cc. It is used as an entry level engine for the Citroën C5, the Peugeot 406 and the Peugeot 407.
| Model | Output | Notes |
|---|---|---|
| EW7 J4 | 117 PS (115 hp/86 kW) | 16-valve catalyst |
[edit] EW10
The EW10 has a bore of 85 mm and a stroke of 88 mm, for a displacement of 1997 cc. It is used widely throughout the PSA Group, including the Citroën C4 and C5 and Peugeot 206 307 and 407. A gasoline direct injection variant, called EW10 D and marketed as HPi, was briefly used in the Citroën C5 and Peugeot 406 starting in 2001, but was discontinued at the beginning of 2005 due to low sales. The EW10 J4S variant is a high performance version used in the 206 RC, 307 Féline and C4 VTS. Power was raised to 177 PS (130 kW), although the two French brands round it up to 180 PS in advertising.
| Model | Output | Notes |
|---|---|---|
| EW10 D | 140 PS (138 hp/103 kW) | gasoline direct injection catalyst |
| EW10 J4 | 136 PS (134 hp/100 kW) | 16-valve catalyst |
| EW10 J4 S | 177 PS (174 hp/130 kW) | 16-valve catalyst |
| EW10 A | 144 PS (143 hp/103 kW) | 16-valve catalyst |
[edit] EW12
The EW12 was introduced to replace the low-pressure turbo variant of the XU10. It has a bore of 86 mm and stroke of 96 mm, for a displacement of 2231 cc. Citroën only uses it on the C8 MPV, while Peugeot, which has more a sporty image, uses it in the 407, the 607 executive model and 807 MPV.
| Model | Output | Notes |
|---|---|---|
| EW12 J4 | 158-163 PS (156-161 hp/116-120 kW) | 16-valve catalyst |
[edit] DW8
The DW8 is for all intents and purposes an evolution of the XUD9 and is the only Diesel engine in the family not to feature a turbocharger or common-rail direct injection. It has a bore of 82.2 mm and a stroke of 88 mm for a displacement of 1868 cc. It is mainly used in vans such as the Citroën Berlingo and Peugeot Partner but can also be found in more affordable versions of the Peugeot 206. The DW8 will be phased out during 2006 as it does not pass Euro IV emissions regulations.
| Model | Output | Notes |
|---|---|---|
| DW8 | 69 PS (68 hp/51 kW) | Diesel catalyst |
[edit] DW10
The 2.0 L DW10 was the first PSA Diesel engine to feature common rail direct injection, and was given the commercial designation HDi. It has a bore of 85 mm (3.3 in) and a stroke of 88 mm (3.5 in) for a total displacement of 1997 cc, replacing the XUD9 in 1999. It was initially available in 90 PS (66 kW) form, with two valves per cylinder and a non-intercooled turbo. An intercooler was added later in the year, boosting power to 107 PS (79 kW).
Initially available in the midsized models, such as the Citroën Xsara and Xantia and Peugeot 306 and 406, it was soon spread across the PSA range, such as the LCVs, while a 16-valve version, with 109 PS (80 kW), was used in the large MPVs built in association with Fiat. Suzuki was a customer of these powerplants, using them in the European Vitara and Grand Vitara.
The DW10 was used as the basis for the new family of Diesel engines co-developed with Ford, and it is used in the Focus, C-Max and Mazda5, 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 136 BHP (100 kW). It is fitted with a six-speed manual transmission or six-speed automatic transmission (from summer 2006 onwards).
| Model | Output | Notes |
|---|---|---|
| DW10 ATED | 107 PS (106 hp/79 kW) | common rail turbo-Diesel catalyst |
| DW10 TD | 90 PS (88 hp/66 kW) | common rail turbo-Diesel catalyst |
| DW10 TED4 | 136 PS (134 hp/100 kW) | common rail turbo-Diesel 16-valve |
[edit] DW12
The 2.2 L (2179 cc) DW12 has a bore of 85 mm (3.3 in) and a stroke of 96 mm (3.8 in). Unlike the initial DW10 designs, and it was fitted with 16 valves from the beginning, and made its debut in the 2000 with the Citroën C5 and Peugeot 607, being used only in the larger models. In 2006 it will be added to the PSA/Ford family, with power reaching 170 PS (125 kW). Ford does not yet use this engine, which is expected to power the next generations of both the Mondeo and Jaguar X-Type. A different 2.2 L powerplant, with a displacement of 2198 cc, based on the Ford DSD-424 design, will be used in the LCV range in the near future.
| Model | Output | Notes |
|---|---|---|
| DW12 TED4 | 128-133 PS (126-131 hp/94-98 kW) | common-rail turbo-Diesel 16-valve |
