Sequential Gas Injection
Today the gas systems are far more advanced and new technology and software allow a greater flexability for vehicle engine conversions.
Today a gas system injects gas straight into the inlet manifold of the vehicle the same as petrol, which gives better metering of the fuel, improved MPG and further reductions in tail pipe emissions.
The injection of the gas system is done in a sequential firing order to match the petrol system and these are the most common of the conversions that we fit today often referred to as SGI (Sequential Gas Injection).
The heart of the LPG conversion is the LPG computer (ECU) which not only controls the switching on and off of the petrol injectors but also uses the original petrol injector signals to drive the newly fitted gas injectors ensuring petrol control functions are transferred to the gas system to include cruise control, traction control etc.
A simple dashboard change over switch enables the user to select the fuel while driving and also gives a reading to the gas remaining inside the gas tank. In the event that the vehicle runs out of LPG the switch will bleep giving notification that the system has reverted back to petrol. Once refilled the system will simply reset and the user can then select LPG as the main choice of fuel.