LPG Reducer Installation Manual
Gas pressure regulator (called as well reducer or vaporizer) is the first element to choose when you consider LPG autogas conversion. The choice of reducer is very important for proper work of the gas system at full engine load range.
Reducer main task is to maintain stable gas pressure in the gas inlet system (injectors - reducer) and to change gas state (LPG) from liquid (on the tank side) to vapor (on the injectors side) in a process of adiabatic expansion, and that is why reducers are often called vaporizers.
Change from liquid to vapor gas state cause sharp declines in gas temperature, and that is why reducer need to be heated constantly by engine coolant.
A major factor in choice of the regulator is the power of the engine.
For engines with high HP and turbocharged ones two reducers may be needed.
How to install two LPG reducers:
Guidelines for reducer installation:
- install reducer under coolant compensatory reservoir level,
- regulator should be firmly attached to the solid parts of the vehicle
- mounting position of the regulator should be in accordance with the manufacturer's instructions,
- the regulator can not be positioned in a location exposed to temperature drops during the drive, in a place where there is too high a temperature and shall not obstruct the operation of other vehicle components,
- heating fluid powering reducer run in parallel between the heater system and the engine block,
- it is recommended to plugging parallel in rubber hoses,
- power reserve of the reducer need to be kept
Above instructions comes from AC STAG LPG/Autogas systems producer
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