Fuel Injection Pressure Audi 2.5 TDI 1T

Hi,

Does anyone know what injection pressure the ESP system uses on the 2.5 TDI engine with the engine code 1T (i.e., the original TDI with 88 kW)?
I'm not talking about the nozzle opening pressure, but the actual injection pressure.

And can anyone determine whether the 1T engine (manufactured in 1989 and 1990) uses different pistons than the later ABP engine (manufactured from 1990 to 1992) or the even later AAT engine (from the model change in 1992)?

Thank you and best regards.
Jens.

Jens 16syncro wrote:

Hi, Does anyone know what fuel pressure the ESP system uses on the 2.5 TDI engine with the engine code 1T (i.e., the original TDI with 88 kW)? I'm not referring to the nozzle opening pressure, but rather the actual injection pressure.

Hi,

After http://www.tuneline.at/news/detail.asp?start=28, it looks like this:

Quote:

1989: The first five-cylinder TDI engine with 88 kW (120 hp) and 265 Nm, featuring an axial-piston injection pump with 950 bar. 1991: Four-cylinder TDI engine with 66 kW (90 hp) and an axial piston injection pump with 182 Nm of torque and 950 bar pressure. 1993: V8-TDI study presented in the Audi ASF concept car at the IAA (International Motor Show). 1994: All Audi TDI engines meet emissions standards according to MVEG II. Five-cylinder TDI engine with 103 kW (140 hp) and 290 Nm torque, featuring an axial piston injection pump with approximately 1000 bar. 1995: Four-cylinder TDI engine with 81 kW (110 hp) and 225 Nm of torque, featuring an axial piston injection pump with 1100 bar pressure and a variable geometry turbocharger (VTG). 1997: World's first passenger car V6 TDI engine with 110 kW (150 hp) and 310 Nm of torque, featuring a radial piston injection pump with up to 1500 bar and a VTG turbocharger. Also, the first TDI engine with 4-valve technology. 1999: V8-TDI with 165 kW (225 hp) and 480 Nm, featuring a common-rail injection system with 1350 bar and a VTG turbocharger, and 4-valve technology

.

Best regards,
Munch.

Hello!

Jens 16syncro wrote:

Does anyone know what injection pressure the ESP system uses on the 2.5 TDI engine with the engine code 1T (i.e., the original TDI with 88 kW)? I'm not referring to the nozzle opening pressure, but rather the actual injection pressure.

Approximately 1200 bar at the nozzle (~950 bar at the pump).

BYE
TDI mechanics.