Technical Data; Operating Principle - Stag FPE-A Instrucciones Y Uso

1. Technical data

Supply voltage:
Operating temperature:
Protection Class:
2. Applications
The FPE-A fuel pressure emulator equipped with autoadaptation functionality is designed for use in a wide range
of vehicle models, in which errors related to the pressure controller circuit in the fuel rail or high/low rail pressure
occur during operation of the engine fuelled by LPG/CNG.
It is compatible with the following vehicle models:
Volvo: S40, S60, S60R, S80, XC70, XC90
Opel: Astra , Insignia
Chevrolet: Captiva
Exact versions of supported models are listed in the following sections.

3. Operating principle

When the engine is fueled by LPG/CNG, there is no supply of petrol from the rail, so the rail pressure is not
changing as expected by the petrol ECM. This is interpreted as an error in the pressure control circuit. As
a consequence, the ECM shortens the injection time pulses and/or reports a failure that may make continuation
of driving impossible. The FPE-A works with the regulator circuit and solves the problem. After installation and
the first start-up, the activated adaptation function selects the parameters and emulation mode for a given car
in an automatic mode. The settings are stored in system non-volatile memory and can be modified only with
another adaptation cycle.
4. Wiring diagram and installation remarks
The supplied universal emulator harness should be connected in accordance with the indicated wiring diagram
and recommendations of the table with versions dedicated to specific cars. The location of emulator installation
depends on the wiring diagram for a specific version and configuration of the fuel pressure control system.
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trademarks, etc. may lead to prosecution or civil proceedings.
12V ±25%
-40°C ÷ +70°C
IP40
3
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