EP0083516A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A method of and an apparatus for supplying liquid fuel by gas pressure to an engine
Assignee: Orbital Engine Co Pty Ltd
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Filing: 1982-12-31
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Granted: —
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Expires: 2002-12-31
Abstract
Abstract A liquid fuel supply for an internal combustion engine (10) wherein the fuel is circulated in a closed circuit including a fuel reservoir (16) and a fuel metering device (13), delivering the fuel from the metering device to the engine by admitting compressed air to the metering device, the compressed air being supplied by a compressor (12) that draws air and fuel vapour from the fuel reservoir. The residual gas in the metering device being entrained in the circulating fuel and returned to the fuel reservoir.
Inventors
- 👤 Tony Ralph Sarich
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 10:46
CPC Classifications
F; F02; F02M; F02M55/00; F02M55/007; F02M67/00; F02M67/02
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
93 words
A method of supplying liquid fuel by gas pressure to an engine comprising circulating fuel from a fuel reservoir through a fuel metering device, compressing gas or a gas/fuel vapour mixure drawn from the fuel reservoir and supplying said compressed gas or gas/fuel vapour mixture to said metering device, delivering a metered quantity of fuel from the metering device to the engine by the admission of the compressed gas or gas/fuel vapour mixture to the metering device, and returning the excess fuel with entrained gas from the metering device to the fuel reservoir.
Claim 2
Independent Claim
93 words
A method of supplying liquid fuel by gas pressure to an engine comprising circulating fuel from a fuel reservoir through a fuel metering device, compressing gas or a gas/fuel vapour mixure drawn from the fuel reservoir and supplying said compressed gas or gas/fuel vapour mixture to said metering device, delivering a metered quantity of fuel from the metering device to the engine by the admission of the compressed gas or gas/fuel vapour mixture to the metering device, and returning the excess fuel with entrained gas from the metering device to the fuel reservoir.
Claim 3
Dependent Claim
38 words
A method according to claim 1 wherein the engine has an air induction system and air therefrom may be added to the gas or gas/fuel vapour mixture to be compressed therewith for supply to the fuel metering device.
Claim 4
Dependent Claim
38 words
A method according to claim 1 or 2 wherein leakage gas fuel and fuel vapour accumulated in the metering device is added to the gas/fuel vapour mixture to be compressed therewith for supply to the fuel metering device.
Claim 5
Dependent Claim
20 words
A method according to claim 3 wherein the leakage gas fuel and fuel vapour are returned to the fuel reservoir.
Claim 6
Independent Claim
125 words
A method of delivering a metered quantity of liquid fuel to an engine comprising circulating liquid fuel from a fuel reservoir through a chamber to fill the chamber with fuel, compressing gas or a gas/fuel vapour mixture drawn from said fuel reservoir, admitting said compressed gas/fuel vapour mixture to said chamber when the chamber is isolated from the fuel circuit to displace fuel from the chamber when a discharge port in the chamber is opened, controlling the quantity of fuel displaceable by the admission of the compressed gas/fuel vapour mixture to deliver a metered quantity of fuel to the engine, and returning fuel and gas/fuel vapour mixture from the chamber to the fuel reservoir after completion of the delivery of the metered quantity of fuel.
Claim 7
Independent Claim
125 words
A method of delivering a metered quantity of liquid fuel to an engine comprising circulating liquid fuel from a fuel reservoir through a chamber to fill the chamber with fuel, compressing gas or a gas/fuel vapour mixture drawn from said fuel reservoir, admitting said compressed gas/fuel vapour mixture to said chamber when the chamber is isolated from the fuel circuit to displace fuel from the chamber when a discharge port in the chamber is opened, controlling the quantity of fuel displaceable by the admission of the compressed gas/fuel vapour mixture to deliver a metered quantity of fuel to the engine, and returning fuel and gas/fuel vapour mixture from the chamber to the fuel reservoir after completion of the delivery of the metered quantity of fuel.
Claim 8
Dependent Claim
34 words
A method as claimed in claim 5 gas fuel and fuel vapour leaked from the chamber is collected and added to the gas/fuel vapour mixture to be compressed therewith for admission to the chamber.
Claim 9
Dependent Claim
120 words
Apparatus for supplying liquid fuel by gas pressure to an engine comprising a gas circuit including a means to supply compressed gas to a fuel metering device and a gas reservoir from which gas is drawn by said means and to which gas or gas and fuel are returned from the fuel metering device, a fuel circuit including means to supply fuel to the fuel metering device and a fuel reservoir from which fuel is drawn by said means and to which fuel or gas and fuel are returned from the fuel metering device, said gas reservoir and fuel reservoir being in communication so that the compressed gas supply means may draw gas including entrained fuel vapour from both reservoirs..
Claim 10
Dependent Claim
120 words
Apparatus for supplying liquid fuel by gas pressure to an engine comprising a gas circuit including a means to supply compressed gas to a fuel metering device and a gas reservoir from which gas is drawn by said means and to which gas or gas and fuel are returned from the fuel metering device, a fuel circuit including means to supply fuel to the fuel metering device and a fuel reservoir from which fuel is drawn by said means and to which fuel or gas and fuel are returned from the fuel metering device, said gas reservoir and fuel reservoir being in communication so that the compressed gas supply means may draw gas including entrained fuel vapour from both reservoirs..
Claim 11
Dependent Claim
46 words
Apparatus as claimed in claim 7 wherein the fuel and gas circuits are combined in the vicinity of the metering device so the return gas and fuel pass through a common conduit to a common reservoir which acts as both the gas reservoir and fuel reservoir.
Claim 12
Dependent Claim
82 words
Apparatus for supplying liquid fuel by gas pressure to an engine comprising a metering device, a fuel reservoir, means to supply fuel from the reservoir to the metering device, means to deliver a compressed gas/fuel vapour mixture drawn from the reservoir to the metering device, said metering device being adapted to deliver a metered quantity of fuel upon admission of the compressed gas/fuel vapour mixture thereto, and means to return excess fuel and entrained gas from the metering device to the reservoir.
Claim 13
Dependent Claim
82 words
Apparatus for supplying liquid fuel by gas pressure to an engine comprising a metering device, a fuel reservoir, means to supply fuel from the reservoir to the metering device, means to deliver a compressed gas/fuel vapour mixture drawn from the reservoir to the metering device, said metering device being adapted to deliver a metered quantity of fuel upon admission of the compressed gas/fuel vapour mixture thereto, and means to return excess fuel and entrained gas from the metering device to the reservoir.
Claim 14
Dependent Claim
122 words
Apparatus for delivering a metered quantity of liquid fuel to an engine comprising a chamber having a selectively openable discharge port, means to circulate fuel from a reservoir through said chamber to fill the chamber with fuel preparatory to delivery, means to compress a gas/fuel vapour mixture drawn from said reservoir for delivery to said camber, means operable to selectively admit the compressed gas/fuel vapour mixture to the chamber at a pressure sufficient to displace the fuel therefrom upon opening of the discharge port, and means to control the quantity of fuel displaceable from the chamber by the admission thereto of the gas/fuel vapour mixture, and means to return excess fuel, gas and fuel vapour from said chamber to said fuel reservoir.
Claim 15
Dependent Claim
122 words
Apparatus for delivering a metered quantity of liquid fuel to an engine comprising a chamber having a selectively openable discharge port, means to circulate fuel from a reservoir through said chamber to fill the chamber with fuel preparatory to delivery, means to compress a gas/fuel vapour mixture drawn from said reservoir for delivery to said camber, means operable to selectively admit the compressed gas/fuel vapour mixture to the chamber at a pressure sufficient to displace the fuel therefrom upon opening of the discharge port, and means to control the quantity of fuel displaceable from the chamber by the admission thereto of the gas/fuel vapour mixture, and means to return excess fuel, gas and fuel vapour from said chamber to said fuel reservoir.
Claim 16
Dependent Claim
83 words
Apparatus according to claim 10 wherein the chamber is provided with a gas/fuel vapour mixture inlet port, and said means to control the quantity of liquid displaceable includes a member forming portion of said chamber and having said inlet port formed therein, said member being movable relative to the discharge port in said chamber so that the quantity of liquid displaceable by the admission of the gas/fuel vapour mixture is determined by the position of said inlet port relative to the discharge port.
Claim 17
Dependent Claim
40 words
Apparatus according to any one of claims 9 to 11 including means to return gas fuel and gas/fuel vapour leaked from the chamber in the metering device to the means to deliver compressed gas/fuel vapour mixture to the metering device.
Claim 18
Dependent Claim
19 words
Apparatus according to claim 12 wherein the leaked gas fuel and gas/fuel vapour is returned to the fuel reservoir.
Claim 19
Dependent Claim
30 words
Apparatus according to any one of claims 9 to 13 wherein the compressing means is adapted to draw air from another source to be compressed with the gas/fuel vapour mixture.
Claim 20
Dependent Claim
22 words
Apparatus according to claim 14 wherein the engine includes air induction system and said compressing means is adapted to draw air therefrom.
References Cited (Backward Citations)
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