Pressure regulator for combustible gases, in particular for internal-combustion motors
OwnerPietro Pariettiinventor
Life of this patent
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Abstract
The purpose of the pressure regulator is to feed internal combustion motors or engines with combustible gases and it comprises two membranes 14 and 16 which respond to the intake suction of the motor, while the second of the said membranes actuates dislocating members 22 to check the communication between the said chambers A2 and A3 delimited by the said membranes and connected with the utilizer by means of a duct 30. One gauged nozzle 64 delivers part of the combustible gas into chamber A3 interested by the second membrane 16 and which is directly connected with the suction 30 of the motor or engine.
Claims15
A pressure regulator having an inlet duct and an outlet duct for connection between a source of gaseous fuel under constant pressure and a fuel intake duct of an internal combustion engine, respectively, said regulator comprising a first assembly having a first membrane operatively connected at one side to a check valve and having said one side in communication via a central duct with one side of a second membrane and with said inlet duct, said one side of the second membrane cooperating with an adjacent rim of said central duct, a nozzle for introducing a jet of the gaseous fuel from said inlet duct into said central duct behind said rim, and a duct aligned with the nozzle so as to provide a path for said jet out of said central duct towards said inlet duct, the arrangement being such that a reduction of gaseous fuel pressure on said one side of the second membrane deforms said second membrane to cover said rim causing a reduction of gaseous fuel pressure in said central duct complemented by a reduction of gaseous fuel pressure therein caused by said jet, the reduced pressure being transferred to said one side of said first membrane to deform said first membrane in a manner to open said check valve, said check valve being located in a passage between said inlet duct and said outlet duct.
A pressure regulator for feeding gaseous fuel from a pressurized source to a fuel intake duct of a utilization device such as an internal combustion engine, said regulator comprising:
- (a) an inlet duct (38) for connection to said pressurized source of gaseous fuel;
- (b) an outlet duct (30) for connection to said fuel intake duct of said utilization device;
- (c) first throttle means (34,40) interposed between said inlet duct (38) and said outlet duct (30);
- (d) a first membrane (14) responsive to pressure in said outlet duct (30) for operating said first throttle means (34,40);
- (e) second throttle means (16,22);
- (f) a second membrane (16) responsive to pressure in said outlet duct (30) for operating said second throttle means (16,22);
- (g) a first chamber (A2) partly defined by said first membrane (14) and a second chamber (A3) partly defined by said second membrane (16), a path (20) of communication between said chambers (A2,A3) being controllable by said second throttle means (16,22), said chambers being connected to said outlet duct (30);
- and,
- (h) at least one gauged nozzle (64) for feeding gaseous fuel from said inlet duct (38) as a jet into said second chamber (A3) to cause said first membrane (14) to open said first throttle means (34,40) and said second membrane (16) to close said second throttle means (16,22), thereby to control the feed rate to the utilization device.
Dependencies are inferred from the claim text.