Technical Manual Top !!top!! | Lpi Vialle
Smooth operation on petrol, but noticeable misfires and rough idling on LPG.
Atomize liquid LPG directly into the intake port near the intake valve.
External contaminants or heavy ends (paraffins) in low-quality LPG can restrict injector pintle movement. Injectors can be cleaned using ultrasound baths or specialized solvent flushing rigs designed for liquid gas systems. 6. Advanced Troubleshooting Workflow
Current draw should remain steady. A spiking or excessively high current draw indicates mechanical binding or a failing pump motor. 2. LPi Fuel Rail and Pressure Regulator lpi vialle technical manual top
Because liquid propane has a different density, energy content, and stoichiometric ratio (AFR) compared to petrol, the LPE recalculates the duration of the injection pulse. It applies a correction factor to drive the LPG injectors accurately.
| Hazard | Action | |--------|--------| | Liquid LPG at 5–30 bar | Depressurize system via software (ECU “purge” command) before opening any liquid line. | | Electrical connections | Disconnect battery negative. LPI injectors are peak-hold (low impedance); do not apply direct battery voltage. | | Vaporizer temperature | Surface may be hot (coolant-heated). Allow to cool before handling top cover. |
This write-up gives a technician or advanced DIY user a structured, actionable guide for top-level service of a Vialle LPI system using the keyword context you provided. Smooth operation on petrol, but noticeable misfires and
Do not trust generic forums. Do not guess with high-pressure LPG. Download or purchase the legitimate Technical Manual Top , study the hydraulic flow chart, and keep a copy on your diagnostic tablet. Your reputation—and your safety—depend on it.
The LPI Vialle system requires careful installation and configuration to ensure proper operation. The following steps should be followed:
The system utilizes a specialized LPE (LPi Control Unit) that mirrors the vehicle’s original petrol ECU strategy. It converts petrol injection timing into corresponding LPG timing, ensuring features like RPM limits and fuel shut-off during deceleration are preserved. 2. Core Technical Components Injectors can be cleaned using ultrasound baths or
: The tank features an integrated LPG pump that circulates liquid fuel through the system. The pump motor is lubricated by an internal oil lift screw that carries oil to the top bearing.
As the LPG changes from a liquid to a vapor upon injection, it absorbs heat from the intake air. This lowers the temperature and increases the density of the intake charge, which can lead to higher volumetric efficiency and even improved performance compared to petrol.
A cabin-mounted interface (often a Combi-switch) that allows manual switching and provides tank level readouts. 3. Electrical and Wiring Specifications
Vialle LPi System Overview and Benefits | PDF | Fuel Injection - Scribd
