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The PSA TU engine is a family of small four cylinder engines used in the Peugeot and Citroën range of cars. It was introduced in 1987 with the Citroën AX, replacing the X family, although it shared many components with its predecessor. The TU is available in either petrol or a non-turbo Diesel variants, the latter called TUD.

Contents

TU9

The TU9 was the entry-level version, used in a variety of cars including the Citroën AX, Saxo, Peugeot 205 and 106. It had a displacement of 954 cc, with a bore of 70 mm and a stroke of 62 mm. Power was initially 45 PS (33 kW), but it was increased to 50 PS (37 kW) in 1992, with the adoption of central fuel injection and a catalytic converter. Production was stopped in the Citroen Saxo and Peugeot 106 with the introduction of Euro III in 2001.

Model Output Notes
TU9 M/Z 50 PS (49 hp/36 kW) FI catalyst
TU9/K 45 PS (44 hp/33 kW) 1-bbl carb

TU1

The TU1 has a displacement of 1124 cc, with a bore of 72 mm and a stroke of 69 mm. Power was initially 55 PS (40.5 kW), but it was increased to 60 PS (44 kW) in 1992, with the adoption of central fuel injection and a catalytic converter. The introduction of Euro III led to the adoption of multipoint injection, but power remained the same (although there was a small torque increase). This engine is the current entry-level option in the Citroën C2 and C3 and Peugeot 206. It will most likely be replaced by the Prince engines currently in development between the PSA Group and BMW.

Model Output Notes
TU1 F2/K 60 PS (59 hp/44 kW) 1-bbl carb
TU1 JP 60 PS (59 hp/44 kW) FI catalyst
TU1 M/Z 60 PS (59 hp/44 kW) FI catalyst
TU1/K 55 PS (54 hp/40.5 kW) 1-bbl carb

TU2

The TU2 has a displacement of 1294 cc, with a bore of 75 mm and a stroke of 73 mm. Power was initially 95 PS (94 hp/70 kW), powering the Citroën AX Sport, but a slightly more powerful version was developed for the Peugeot 205 Rallye, named TU24. A new version with 100 PS (99 hp/74 kW) was created in 1992 for the Peugeot 106 Rallye, with the adoption of a Magnetti Marelli fuel injection system and a catalytic converter.

Model Output Notes
TU2 Â 95 PS (93 hp/70 kW) twin 2-bbl carb
TU24 Â/K 103 PS (101 hp/76 kW) twin 2-bbl carb
TU2 J2/Z 100 PS (98 hp/73.5 kW) FI, catalyst

TU3

The TU3 has a displacement of 1360 cc, with a bore of 75 mm and a stroke of 77 mm. This engine has been one of the most used by the PSA Group, with applications in superminis, compacts and midsize cars, including a stint in competition use in the Citroën AX GT Cup and the Citroën AX GTI Cup, held in many European countries throughout the early 1990s in both circuit racing and rallying.

In its early years, it was available with either a single or double barrel carburetor, with fuel injection introduced in 1990 for the AX GTI and 106 XSi, capable of delivering 100 PS (73.5 kW) at 6600 rpm. The carburated versions gave way to fuel injection in 1992, while the sports version was retired in 1996.

Model Output Notes
TU3 A 65 PS (64 hp/48 kW) 1-bbl carb
TU3 A (another) 75 PS (73 hp/55 kW) 2-bbl carb catalyst
TU3 A/K 70 PS (69 hp/51 kW) 1-bbl carb
TU3 F2/K 75 PS (73 hp/55 kW) 2-bbl carb
TU3 FJ2/K 100 PS (98 hp/73 kW) FI
TU3 FJ2/Z 95 PS (93 hp/69 kW) FI catalyst
TU3 JP 75 PS (73 hp/55 kW) FI catalyst
TU3 M/Z 75 PS (73 hp/55 kW) FI catalyst
TU3 S 85 PS (83 hp/62 kW) 2-bbl carb

ET3

A DOHC 16 valve version of the TU3 with variable valve timing was introduced in 2005 with the Peugeot 307. However, this version was named ET3, possibly as a prelude for the new PSA/BMW Prince engine family.

Model Output Notes
ET3 J4 90 PS (88 hp/66 kW) FI, catalyst

TU5

The TU5 has a displacement of 1587 cc, with a bore of 78.5 mm and a stroke of 82 mm. It was initially available in 8- and 16-valve configuration, but only the DOHC 16V option remains. Power is 109 PS (80 kW) in most current applications, the same as the DV6 1.6 L Diesel engine, although a sporty 122 PS (90 kW) version is used to power the Citroën C2 VTS. The TU5 has been used in motorsports by both Citroën and Peugeot.

Model Output Notes
TU5 J2/L3 105 PS (103 hp/77 kW) FI catalyst
TU5 J4 120 PS (118 hp/88 kW) 16-valve catalyst
TU5 JP 90 PS (88 hp/66 kW) FI catalyst
TU5 JP4 109 PS (108 hp/80 kW) 16-valve catalyst
TU5 JP4 S 122 PS (120 hp/90 kW) 16-valve catalyst

TUD

The TUD was the Diesel variant. It initially used the cylinder casings of the TU3 (and was thus called TUD3), but in 1992 displacement was increased to 1527 cc, with a bore of 77 mm and a stroke of 82 mm, the engine being renamed TUD5. It was available only with an injection pump (available in both Bosch and Lucas variants) and had no turbocharged versions. Besides a number of applications in the PSA Group's supermini models (AX, Saxo, 106), it was sold to other automakers who did not possess small Diesel engines. It was used in the Rover Metro from 1993 until the end of production in 1997. It also powered the diesel version of the second generation of the Nissan Micra in Europe, but this version was not sold in the UK.

Model Output Notes
TUD3 53 PS (52 hp/39 kW) Diesel
TUD5 58 PS (57 hp/43 kW) Diesel catalyst

See also

Sources

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