REGLERINGSSYSTEM FOR ATT REGLERA FLODET HOS ETT GASFORMIGT FLUIDUM GENOM ENMATNINGSLEDNIG, SERSKILT FOR REGLERING AV GASFORMIGT BRENSLE TILL EN FORBRENNINGSMOTOR

摘要

Pipe (81) leads a liquefied natural gas to the pressure regulator (2). The gas passes through a proportional-flow solenoid valve (3) and arrives at the injection nozzle (4) placed in the air intake of a petrol carburetter (50) above the venturi (5). The solenoid (3a) of the valve (3) is linked to the output of an electronic control assembly (6) on which acts a pressure sensor (7) comprising a diaphragm (9) and an HF coil (10) sensitive to the movement of a stud mounted on the diaphragm (9). Negative pressure in the pipe (11a) measures the requirement of the engine and constitutes a demand signal. Positive pressure in the pipe (11b) measures the flow rate. The combined pressures move the diaphragm (9), which reacts on the control device (6) of the valve (3).