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Vialle LPi System Overview and Benefits | PDF | Fuel Injection - Scribd
Bolted to the tank shell, this assembly integrates the 80% filling limit valve, the electronic shut-off solenoid, the mechanical pressure relief valve (PRV), and the fuel level sender float. The External Fuel Filter Unit
Always consult a certified LPG technician and the specific for the precise LPI generation installed on the vehicle to ensure all work meets manufacturer safety standards. 5. Summary of System Characteristics
Comprehensive Guide to the LPI Vialle Technical Manual: Mastering Liquid Propane Injection lpi vialle technical manual top
The system typically requires the fuel system to be primed to over 30 bar before the engine starts. Common Troubleshooting:
Switch the system to LPG mode to turn the pump on. The pressure reading must immediately rise by 3.0 to 5.0 bar above the static tank pressure baseline . If the pressure increases by less than 2.0 bar, the pump cannot keep the propane in a pure liquid state inside the hot engine bay. This shortfall will cause vapor locks and intermittent stalling. Step 2: Injector Resistance Verification
(for professional technicians) Rating: 4/10 (for the average hobbyist) Vialle LPi System Overview and Benefits | PDF
: Acting as the hub between the tank and injectors, this block contains the solenoid valve and the pressure regulator , which maintains a system pressure approximately 5 bar above the current tank pressure.
The LPE monitors the pressure differential. Once the hydraulic loop is verified to be completely liquid and pressurized, the system prepares for switchover.
Interfaces with the vehicle’s original signals to manage the LPG injectors. Summary of System Characteristics Comprehensive Guide to the
Clean or replace faulty liquid injector; check purge valve operation. Worn tank pump bearings; Restricted fuel filter.
Slowly open the tank service valve. Prior to starting the engine, spray all disturbed joints with a certified gas leak detection spray (bubble solution). Watch closely for any foaming. Fix any leaks immediately before restoring electrical power. 6. Technical Specifications and Wiring References Pinout Configuration Matrix (Typical Vialle LPE-7 Type ECU) Pin Number Wire Color Signal Function Target Destination / Connection Type Pin 1 Red / Black Main Battery Power (+12V) Vehicle Battery positive via 15A inline fuse Pin 2 System Ground (0V) Chassis grounding point / Engine block Pin 5 Switch Communication Dashboard fuel selector switch module Pin 12 RPM Signal Camshaft/Crankshaft sensor or ignition coil negative Pin 18 Injector 1 Intercept Input Signal coming out from petrol ECU for cylinder 1 Pin 19 Grey / Black Injector 1 Drive Output Output connection directly to LPG injector 1 Pin 28 Tank Pump Power Supply Outputs variable PWM voltage to tank pump relay General System Specifications Operating Voltage: 10V DC to 16V DC Maximum Current Consumption (Pump Active): 12 Amps