PSA EW/DW engine

PSA EW/DW engine

Infobox Automobile
name = PSA EW/DW engine
parent company = PSA Peugeot Citroën
production = 1998-present
predecessor = PSA XU engine (for petrol engines) PSA XUD engine (for diesel engines)
class = Straight-4
engine = Petrol:
1.7L I4 85 kW
2.0L I4 100-130 kW
2.2L I4 116-120 kW
Diesel:
1.9L I4 51-53 kW
2.0L I4 66-100 kW
2.2L I4 94-125 kW
related = Ford DLD engine
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.

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.

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 was phased out in 2007 as it does not pass Euro IV emissions regulations.

ee also

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


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