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The basic process of
converting a vehicle consists of installing a tank to contain the
gas and adding control equipment to the engine.
The conversion system used
depends upon the vehicle engine management system and on board
diagnostic (EOBD) requirements. Most modern vehicles use a
sequential injection system, essential for integration with EOBD and
for maximum emissions reduction and efficiency. Separate LPG
injectors are installed in the inlet manifold, close to the petrol
injectors, fed via a common rail, from the vaporiser unit.
The flow of gas to the
injectors is controlled by the LPG ECU. Sequential LPG systems
utilise the original petrol injector signal and duration times,
allowing any deviation in fuel mixture to be compensated for by the
original vehicle ECU. |
