US 6,267,105 B1Granted

Electronic pressure reducer for liquid petroleum gasses

OwnerBruno Bertossiinventor

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Abstract

An electronic pressure reducer for liquid petroleum gasses comprises a heat exchanger (2,3) located upstream of an evaporation chamber (4) connected to a pressure reducing valve (5); the chambers (13,14) of the reducing valve (5) are separated by a passage section (15) for the fuel in the state of superheated vapor; the area of the passage section (15) is changed by a conic closing device (16) manoeuvred by a step motor (17) controlled by the central unit (6); the control central unit (6) defines the displacement of the conic closing device (16) from a first position of maximum flow to a second position of minimum flow by changing the area of the passage section (15), the dimension of which defines the flow and the pressure of the fuel coming out of the reducing valve (5) through an outlet orifice (18) connected to a metering valve (10).

Claims10

Dependent claims

An electronic pressure reducer for liquid petroleum gasses comprising a solenoid valve intercepting the liquid fuel, the solenoid valve being connected to a bottle housing the liquid fuel;

a heat exchanger being located upstream of an evaporation chamber jointed to a pressure reducing valve in which the pressure of the evaporated fuel is regulated considering the engine working phases;
the pressure reducing valve being controlled by a control central unit fitted with electronic components jointed to sensors;
the control central unite defines the regulating process to be effected by the reducing valve according to the signals coming out of the sensors in order to obtain pre-established fuel pressure values at the outlet of the reducing valve, said values being stored in the control central unit, wherein the fuel pressure reducing valve comprises a variable hydraulic resistance mechanism and a passage section for the fuel in the state of superheated vapour.

Dependencies are inferred from the claim text.