Nomenclature
Engines of PSA Peugeot Citroën group have all the same code names: 
[Type] [Family] {Displacement in dl - 1 liter} |Version| (Nb valves)
For example the diesel engine DW10 BTED4:
- D: Diesel Engine (E for gasoline)
- W: family of engine
- 10: 2.0L engine
- B: Evolution B of the engine
- TED4: 4 valves per cylinder




Reference:

• CEC F-98-08 Peugeot DW10 Diesel Fuel Injector Fouling Test
• http://www.ultimatecarpage.com/forum/showthread.php?t=34905
• http://ftp.psyborg.rpg.pl/hdi/Peugeot%20-%20Moteur%20DW10%20(2,0%20L%20HDi).pdf
• http://ftp.psyborg.rpg.pl/hdi/