Douvrin engine

The Douvrin family was an all-aluminum straight-4 automobile engine designed in the early 1970s and produced from 1977 to 1996 by Compagnie Française de Mécanique, a joint-venture between Peugeot and Renault located in the town of Douvrin in northern France. It was produced in the same factory as the PRV V6, which also is sometimes known outside France as the "Douvrin" V6.

Douvrin "Suitcase Engine"

Main article: PSA X engine

Constructed from aluminium alloy, chain driven overhead camshaft, with gearbox in the sump sharing engine oil for lubrication, typically mounted almost on its side. It was available with versions from 954cc to 1360cc.

2.0

The 2.0 L (1995 cc) was an oversquare design with a single overhead camshaft, an 88 mm (3.5 in) bore, and an 82 mm (3.2 in) stroke. It was produced in a variety of configurations:

• normally aspirated 8-valve, single-barrel carburetor, 90 PS (66 kW; 89 hp), from 1978 to 1993 (specific to Renault)
• normally aspirated 8-valve, double-barrel carburetor, 103 PS (76 kW; 102 hp), from 1977 to 1992 (used by Renault and PSA)
• normally aspirated 8-valve, multipoint fuel injection, 120 PS (107 with catalytic converter), from 1986 to 1996 (specific to Renault)
• normally aspirated 12-valve, multipoint fuel injection, 140 PS (103 kW; 138 hp), from 1989 to 1996 (specific to Renault)
• turbocharged 8-valve, multipoint fuel injection, 175 PS (162 with catalytic converter), from 1987 to 1993 (specific to Renault)

Though somewhat dull (with a 6,000 rpm redline only) and slow to throttle response, the normally aspirated 8-valve versions proved extremely reliable. Mileages of over 300,000 km (190,000 mi) without major repairs are not uncommon. The 12-valvers are much livelier and also boast above-average reliability. The turbocharged versions have only average reliability.

Applications:

• Citroën CX
• Renault 18
• Renault 20
• Renault 21
• Renault 25
• Renault Safrane
• Renault Espace
• Renault Fuego
• Renault Trafic
• Peugeot 505

2.2

The 2.2 L (2165 cc) version was derived from the 2.0 L by a simple stroke extension from 82 to 89 mm (3.5 in), making it an undersquare design. Most parts, including the cylinder head, were identical to the 2.0 L's. It was produced in fewer configurations than the smaller version:

• normally aspirated 8-valve, double-barrel carburetor, 110 PS (81 kW; 108 hp), from 1977 to 1992 (used by Renault and PSA)
• normally aspirated 8-valve, multipoint fuel injection, 123 PS (110 with catalytic converter), from 1983 to 1996 (specific to Renault)
• normally aspirated 12-valve, multipoint fuel injection, 140 PS (103 kW; 138 hp), from 1989 to 1996 (specific to Renault)

This engine proved as reliable as its 2.0 L counterpart. It is often confused with the somewhat similar Simca Type 180, which displaced 2155 cc.

Applications:

• Citroën CX
• Renault Medallion
• Eagle Medallion
• Renault Fuego
• Renault 20
• Renault 25
• Renault Safrane
• Renault Master
• Peugeot 505
• Winnebago LeSharo (built on Trafic chassis and cab)
• Itasca Phasar (built on Trafic chassis and cab)

2.1 Diesel

The 2.1 L (2068 cc) Diesel version was derived from the 2.0 L petrol version by a bore reduction from 88 to 86 mm (3.4 in) and a stroke extension from 82 to 89 mm (3.5 in). Cast-iron cylinder liners were used to withstand the higher cylinder pressure of Diesel combustion. The cylinder head was of course specific and was a Ricardo-type prechamber design fed by a mechanically controlled fuel pump. This engine was only used by Renault in three versions:

• normally aspirated 8-valve, 65 PS (48 kW; 64 hp), from 1980 to 1992
• turbocharged 8-valve, 88 PS (65 kW; 87 hp), from 1982 to 1992
• turbocharged 8-valve with variable-nozzle turbocharger, 92 PS (68 kW; 91 hp), from 1990 to 1996

Reliability of all Diesel versions has been outstanding, surpassing even that of the 2.0 L petrol version.

Applications:

• Renault 18
• Renault 20
• Renault 21
• Renault 25
• Renault 30
• Renault Fuego
• Renault Safrane
• Renault Espace
• Renault Trafic
• Renault Master
• Winnebago Lesharo (built on Trafic chassis and cab)
• Itasca Phasar (built on Trafic chassis and cab)
• Jeep Cherokee
• Jeep Comanche

See also

• List of PSA engines
• List of Renault engines