Electronic devices for fuel selection on vehicles converted to run on LPG/Natural Gas (CNG).

Types:
Carburetor
Allows selecting the kind of fuel (petrol or CNG) at the manual change. During the starting stage, it enables the petrol outlet to allow a quick and efficient start. When the passage from petrol to CNG (centre position) is done, it allows both fuels to overlap so as to avoid unexpected engine standstills. Through light signals it indicates the tank's gas level.

Injection (MPFI)
It allows to select the kind of fuel petrol or CNG) manually and the changeover is done automatically. The engine is "usually" started on Petrol passing over to Gas with a light acceleration. Through light signals it indicates the tank's gas level.

Soft Touch
This kind of key turns out to be versatile during the installation, as the installer may schedule it to run with carburetor or injection vehicles, once scheduled it functions just like what is described for the carburetor and injection keys.

LEVEL INDICATORS
These type of indicators are used to indicate the level of gas in the tank, they don't have any changeover as they are for the vehicles that run on single mode only i.e. on Gas.