The fundamental goal of the Vialle LPi system is to mimic the vehicle's original petrol delivery as closely as possible. 1. Liquid Circulation
Wire harnesses and fuse holders—typically situated in the engine compartment—must be moisture-sealed to prevent voltage drops or system dropouts. Common Faults and Solutions Probable Cause Manual Recommendation Rough running / Misfires Clogged liquid gas injectors or bad LPG fuel quality. Clean or replace injectors; check fuel rail pressure. No pump noise at start Blown fuse or faulty PTC pump motor. lpi+vialle+technical+manual
The vehicle's original engine control unit operates as if the car is still running on petrol. The intercepts the fuel injector signals, calculates the density differences between petrol and liquid LPG, and adjusts the opening time of the gas injectors accordingly. 3. Cooling Effect The fundamental goal of the Vialle LPi system
┌────────────────────────────────────────────────────────┐ │ LPG Tank │ │ (With Integrated PTC Pump & Multivalve) │ └──────────────────────────┬─────────────────────────────┘ │ ▲ │ Liquid Supply Liquid │ ▼ Return │ ┌────────────────┐ └────┤ Injector Rail │ └────────────────┘ The vehicle's original engine control unit operates as
Test the power at the tank connection; check fuse holder integrity. Loose high-pressure crimp couplings or return valve leak.
Positioned directly at the engine's intake valves to precisely meter liquid LPG into the cylinders without the need for a traditional vaporizer.
The submerged PTC pump pumps the liquid LPG out of the tank to the fuel rail. Excess fuel flows back into the tank via a dedicated return valve, creating a continuous loop. This keeps the fuel lines pressurized and cold, preventing the LPG from vaporizing before it reaches the cylinders. 2. Signal Translation