LPG / Autogas conversions and Kits from the experts
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All about LPG
The essential LPG system components
The required components of an LPG system are:
An (R6701 certificated) LPG storage tank with all installed 4 hole fittings
(Ellipsoid or Cylinder) available for boot/load-space mounting or under floor mounting (petrol tank area with additional petrol tank in inner wing). Spare-wheel tanks are also available. We do not recommend the under-sill tanks (offered by others) due to ground clearance problems, fitting difficulty, bracketing costs, filling and gauge accuracy issues and the high addition to conversion costs coupled with their poor capacity.
3 separate electronic cut-off valves
These default to being closed unless powered up, so shutting off supply when the engine stops or the vehicle is not in use (standard in most good systems), and thus prevent gas seepage over time.
Regulator to vaporise the liquid gas and regulate the amount of LPG that goes to the engine. (the regulator working principal is not dissimilar to the basic functions of a Divers Breathing Mask (demand valve) in operational terms (for V8 the Tandem one is essential to give passive (economic) fuelling at low rpm and cruise, plus full capacity flow/power when the occasional kick down is required.
A mainline flow adjuster
To adjust the LPG system to the engine (can also be further Lambda & throttle-pot controlled via a stepper motor for further efficiency).
A mixer (supply ring)
To mix the LPG fuel with air before it enters the engine. Normally mounted on the carb or injection plenum intake.
A petrol delivery shut-off system
At its most basic for carburettor models, or at injection levels, an injector simulator system for Efi Models which has the additional ability to fool the engine management (when on LPG) rather than shut it down which would cause engine management problems and default situations, especially with later engine management types and sequential for Thor applications (chipping is needed in all Gems applications).
An ‘LED’ indicator and switch
To give a displayed indication of fuel level and to allow switching between LPG and Petrol use, also to offer the ability to choose between LPG or Petrol start (both options available).
Idle and mixture adjustment ability
These are located on the Vaporiser, with computer hook-up ability for basic system settings and emissions criteria adjustments.
All fittings, nuts and bolts and instructions
Brackets, stainless steel tank straps (where appropriate), tubing , LPG supply, filling lines and gas-type tubing, filler, instructions, adapter’s code of practice details, and additional details regarding our installation expectations to exceed the safety levels and issues of the LPG COP 11.
LPG / Autogas Conversions and Kits from the experts at RPi Engineering