NEW ENGINE 1.9 JTD TWIN STAGE TURBO

THE ENGINE
The 1.9 JTD TWIN STAGE TURBO is the latest development within the FPT
Diesel Family with a specific power close to 100 HP/l.

This engine has been developed with the target to add to FPT Diesel portfolio
an engine with high power & torque density, excellent low-end-torque and
already capable to meet the future Euro 5 emission standards.

Based on the current 1.9 JTDM 16v engine, the engine will be available in two
versions:

• 180 HP @ 4000 rpm
  190 HP @ 4000 rpm

both with 400 Nm torque @ 2000 rpm.

The engine will be sold to both captive and non-captive customers, with the
higher power output reserved to FGA applications.

The low-end-torque has been improved by 50%, with 300 Nm available
already from 1250 rpm.

These outstanding performances have been achieved basically through the
introduction of an advanced charging technology, such as the Two Stage Turbocharger,
together with proper design changes, to increase the thermostructural
resistance with increased peak cylinder pressure (up to 180 bar)
and exhaust gas temperature (up to 800 deg. C).

The Two Stage Turbo (TST) technology allows to remove the usual
constraints that the engineers have to face when the size of the turbocharger
must be selected, that usually means to accept a compromise between power
and low-end-torque.

With TST we have a small turbocharger operating at low rpm for optimal lowend-torque
and response from low vehicle speed. This small turbo is bypassed
when the required power output increases and a second turbocharger
with higher size comes into operation.

Besides the improvement of overall performances, the TST technology allows
increasing the EGR rate without penalties on fuel consumption and therefore
gives a relevant contribution towards NOx emission reduction.

The engine has been designed to comply with Euro 5 emission standards.
This target has been achieved thanks to:

• reduction of the CR from 17.5 to 16.5 and adoption of low-voltage
  metallic glow plugs
  improved EGR cooler (with by-pass) and EGR valve
  adoption on Lambda sensor with DPF
  new design of inlet ducts

As far as start of production, the 180 HP version is forecast in July this year;
the 190 HP version is forecast in June 2008.

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