Lpi Vialle Technical — Manual Top !!top!!

The fuel rail distributes liquid propane to individual cylinders. A mechanical pressure regulator is mounted at the return side of the rail block or inside the tank module depending on the generation (LPi Generation 5 vs. 7).

Because the gas is injected in liquid form, it behaves closely to petrol, resulting in similar power output.

The system revolutionized the autogas industry when it shifted the paradigm from vaporized gas delivery to direct liquid petroleum gas (LPG) injection . Developed as an advanced alternative to traditional evaporator- and mixer-based conversions, the LPi system mimics a vehicle's original petrol injection system. Understanding this technology requires a deep dive into its official documentation, commonly sought after by technicians via the Vialle LPi Technical Manual . lpi vialle technical manual top

No loss of power compared to petrol; higher octane rating (100+). Cooling effect of liquid injection prevents overheating. Complexity

A clean engine speed signal is taken from the crankshaft sensor or camshaft sensor to synchronize injection cycles. The fuel rail distributes liquid propane to individual

The system’s architecture relies on several precise components:

The LPI system works by ensuring that the LPG remains in a liquid state until it is injected. The technical documentation stresses the importance of keeping the pressure high within the lines. When the vehicle operates, the Vialle LPI system can operate in different modes: Semi-Sequential Because the gas is injected in liquid form,

The is more than a collection of wiring diagrams and torque specs; it is the collective knowledge of Vialle’s engineering team. Whether you are troubleshooting a pressure drop, replacing an injector seal, or performing a full system retrofit, keeping this manual printed in your workshop (or bookmarked on your tablet) will save you hours of guesswork and prevent costly mistakes.

: The bracket must be adjusted per specific technical diagrams before connecting the LPG lines from the manifold.

Older generations of Vialle pumps (V10/V25) utilize a dedicated oil reservoir to lubricate the internal bearings. If this oil leaks or degrades, the pump will seize.