![]() The vaporiser uses warm engine coolant to heat the pressurised liquid and turn it into a gas. ![]() To turn super cold liquid gas into a gas that can be used by the engine, a vaporiser is used. When the LPG system is running, it interrupts the signals to the petrol injectors to stop the flow of petrol. ![]() While all LPG systems vary, ours doesn’t disable anything within the existing petrol system except the injectors. That link allows the LPG system to disable the petrol injectors and run off the gas instead. They’re also linked electronically between the original ECU and the LPG ECU. They only meet at the intake manifold, where the LPG system has its own set of fuel injectors. A Very Quick Overview of LPG ConversionsĪs with most LPG systems, ours is essentially separate to the petrol system. It’s also bad because it takes up valuable locker space, puts weight over the front axle, and adds more complexity to the engine bay. It’s great because it reduces our fuel costs. When we bought our RV, it came pre-fitted with a Prins VSI-2.0 LPG system already installed. ![]() We had to rethink that when both failed within 100 miles of each other. If there’s a problem with the petrol system, we have the LPG system. Having two fuel systems on our RV has always seemed like a nice backup to us.
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