lpg convertor
lpg convertor
(OP)
I have searched here to no avail, as i know it was poted here once before. Impco LPG convertors have an arrow for orientation, what is the reason for this? i want to fit one and the neatest way is unfortunatly arrow down.
Ken
Ken





RE: lpg convertor
When Propane is heated, the propane vapor becomes the lightest compound and is pulled into the engine as fuel. Any heavier compounds with a higher boiling point may settle in the vaporizer. These are usually C16 and heavier, some paraffins, some polyesthers, some amine compounds, etc. Some of these products are left in during the refining process, some are leached from pumps and compressors, some are leached from hoses.
Franz
eng-tips, by professional engineers for professional engineers
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: lpg convertor
the one i have is a Model L, and a small arrow with "top" cast next to it. This does place the vapour outlet towards the bottom. Is it best to fit it to the engine itself, or to the bodywork? engine is a V8.
Ken
RE: lpg convertor
You should keep the amount of fuel in transit as close to the engine as possible. This minimizes the chance of backfires and improves throttle response. If the system is closed loop, it will improve on the fuel transit delay time too.
Franz
eng-tips, by professional engineers for professional engineers
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: lpg convertor
Is it possible for uwanted vibration to upset fuel vapour delivery, being that there is only very low vacuum acting on the diaphram?
Setup is not closed loop, but certainly may change to that if parts needed can be found.
Ken
RE: lpg convertor
The vacuum may be low but it is consistent and the diaphragm is relativey stable.
On some zero governor units, the regulator must be mounted inline with the vehicle centerline to avoid diaphram shift during braking or acceleration.
Franz
eng-tips, by professional engineers for professional engineers
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.