Technical Information
REGULATOR
Function :
Regulator enables LPG came with high pressure to be converted to atmospheric pressure.
It converts LPG in the liquid state to gas state through engine water temperature.
It renders gas flow according to the requirement of engine.
It adjusts the gas according to the engine speed.
Properties:
Body and cover are completely made of composite aluminum material.
Water heating room has been isolated from the gas room by meeting water/gas protection condition.
Diaphragm, gasket, springs are made of LPG compatible material in accordance with ECE-R 67 .01 standard.
Test pressure is 67.5 bar.
Gas flow in the 1st Stage outlet is cut off by an electrovalve.
Idle line and adjustment are separate from each other.
There are electronic and vacuum regulators.
In electronic regulator, the line going to the carburetor from the regulator operates at the same time as the contact. Even if the gas line is on, gas flow to the engine is cut off by the electrovalve.
In pneumatic types; in other words, vacuum regulators, bottom pressure is used. Regulator is activated only when the engine starts (when a vacuum occurs on manifold).
Diaphragm must be replaced in every 50.000-100.000 km depending on its quality.
MULTIVALVE
Function:
Multivalve fitted on the LPG tank.
It ensures gas filling in the tank
It adjusts the filling limit.
It displays the fuel level in the tank.
It dispenses LPG to the engine,
It discharges excess pressure in the tank by a relief valve (safety valve) opened at 27 bar pressure. If the pipes going to the engine are punctured for any reason, it cuts off gas flow and ensures safety.
-Filling:
LPG coming from the fuel pump passes through the multi-valve during filling. Voltran multi-valve will not show much resistance to LPG passing to avoid prolonged filling.
-Filling Limit:
Due to applicable standards and for safety reasons, the tank should not be over filled. The maximum filling rate is 80% of the total capacity while the remaining 20 % will be left for LPG vapor, thus enabling the tank liquid to expand without taking up all the volume as temperature rises. As long as a small space is left in the tank for LPG in the gas state, pressure is unlikely to reach dangerous levels. In order to get refilling to stop timely, the multi-valve is equipped with a device, connected to a float, to cut off LPG flow at maximum permissible level.
-Level Meter: The level of LPG in the tank can be measured with two magnets, one installed in the tank and integrated to the devices connected to the float; and the other connected to the gauge on the external side of the tank. Dial has been divided into four sections and one section is left for reserve. In case of difficulty to read the dial due to the position of the tank or at the customer’s request, multivalve can be connected to the electronic convertors. These convertors are connected to required electronic circuits and enable drivers to notice the fuel level by means of warning signals or other analogue and digital systems.
-LPG Suction Process: The multi - valve ensures LPG suction through a suction pipe leading to the bottom of the tank. It holds passing sections which allow entry of maximum liquid values required by the multi-valve engine in all cases without causing excessive loss of load.
-Shutdown: There are two valves on the multi-valve to block the suction and filling pipes. Such valves are generally open, but may be closed for maintenance or in case of an accident. Since access to the multi-valve is difficult, electrovalve has been installed on the mult-valve in order to close the suction pipe easily.
Over-flow: “Over-flow valve” in the multi-valve and installed on LPG suction pipe cuts off the flow at a difference of 1 bar.
PROTECTION COVER AND VENTILATION PIPE
Function :
They ensure potential gas leakages are discharged out of the vehicle through ventilation pipes. Multi-valve cover is made of leak-proof transparent plastic. A hole is installed to the bottom in order to be seated on the muff.
O-ring is placed here for impermeability.
There are two outlets from the protection cover and these outlets are connected to the external side of the vehicle by vent pipes. In case of any leakage, vehicle luggage is ventilated.
LPG FILLING POINT
Function:
Wide range of filling nozzles made in the world standards is available. They are made of special brass. It is equipped with a ball and o-ring in order that the gas remained in the gas filling pipe is not leaked up to 0,5 bar. It must be assembled to the bumper.
GASOLINE VALVE
Function :
Gasoline valve renders or cut off gasoline flow placed between gasoline switch and carburetor. It is equipped with electrovalve.
Gasoline valve should not allow gasoline to be passed to the carburetor in LPG position during assembly. If LPG and gasoline are mixed with each other, engine carries out rich mix and starts to ping. These points should be considered during assembly. One of the electricity circuits coming to the gasoline valve is connected (+), and the other (neutral).
GAS VALVE
Function :
Gas valve is an electromagnetic controlled valve placed between LPG tank and evaporator connected to each other with a copper pipe.
It cuts off LPG flow when the engine is not run or run on gasoline.
When the engine is desired to run on LPG by selector switch, gas valve as an electronic device sends LPG to the regulator (evaporator) after the command for closing the gasoline valve is given.
It holds a special filter in order to retain potential particles in LPG.
Valve body is made of pressure-resistant brass and its filter is made of cellulose material and special rubber.
Gasoline valve is mounted to the body of the vehicle from the closest point to the regulator. It is mounted in a vertical position to the engine section.
Filter under the gas valve must be definitely controlled and in case of any problem, it must be replaced. Filter lifetime is maximum 50.000 km.
