GB2133078A - Vaporising and supplying LPG - Google Patents
Vaporising and supplying LPG Download PDFInfo
- Publication number
- GB2133078A GB2133078A GB08234201A GB8234201A GB2133078A GB 2133078 A GB2133078 A GB 2133078A GB 08234201 A GB08234201 A GB 08234201A GB 8234201 A GB8234201 A GB 8234201A GB 2133078 A GB2133078 A GB 2133078A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- fuel
- valve
- pressure
- converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
- F02M21/0239—Pressure or flow regulators therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
- F02M21/0233—Details of actuators therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/06—Apparatus for de-liquefying, e.g. by heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
- F02M21/0212—Hydrocarbon fuels, e.g. methane or acetylene comprising at least 3 C-Atoms, e.g. liquefied petroleum gas [LPG], propane or butane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Liquid petroleum gas is supplied to a first chamber (2) from a pipe 1 and passes to a second chamber (12) via a valve (11) controlled by a pressure sensitive actuator (16, 17, 18) to be closed when pressure within the second chamber (12) reaches a predetermined value, a heat exchanger (15) vaporising the liquid fuel and a third chamber (24) receiving the vaporised fuel from the heat exchanger (15) via a valve (26) which opens to allow the vaporised fuel to enter a supply duct (25) to an engine carburettor when the pressure at the end of the said supply duct (25) is below atmospheric. An actuator (29, 30) operated manually or by solenoid enables valve (26) to be opened to supply fuel for starting. A filter 5 is provided in chamber (2) and is covered by a cap (6) which forms a stop valve openable by a solenoid actuator (7). <IMAGE>
Description
SPECIFICATION
Fuel supply means
This invention relates to liquid petroleum gas
(L.P.G.) supply means for internal combustion engines, and in particular to converters for gasifying liquid petroleum gas.
A converter for L.P.G. according to the invention comprises a first chamber containing a filter to receive liquid fuel from a supply, a second chamber having a pressure sensitive valve actuator to close a stop valve between the two said chambers when pressure within the second chamber reaches a predetermined value, a heat exchanger to receive liquid fuel from the second chamber and convert it into gaseous form, and a third chamber to receive the gaseous fuel from the heat exchanger and having an outlet valve which opens to allow the gaseous fuel to enter a supply duct to an engine carburettor when the pressure at the end of the said supply duct is below atmospheric.
In a preferred form of the invention the chambers and the heat exchanger are continuously arranged within a single outer casing. A pressure release valve is provided to allow escape of excess liquid fuel from the first chamber into a drain duct, and a priming device is mounted in the third chamber to open the outlet valve independently of the pressure at the end of the supply duct. The heat exchanger may be in the form of a plurality of tubes through which the fuel passes and which extend through a water jacket.
An embodiment of the invention will now be described with reference to the accompanying drawing wherein.
Figure 1 shows a diagrammatic side view of a converter according to the invention.
Referring to the drawing, a feed pipe 1 from a storage tank of L.P.G. (not shown) leads to a first chamber 2. The chamber 2 is divided into compartments 3, 4 by a liquid-tight partition 5 mounting a filter 6 through which liquid fuel reaches the compartment 4 from the compartment 3. The filter is covered by a cap 6 forming a stop valve which can be opened against a closing spring by energising a solenoid actuator 7 a pressure release safety valve 8 in an end wall of the compartment 3 is pre-set to open when the pressure in the compartment rises above a predetermined value, for example if the filter becomes blocked, to allow excess liquid fuel to escape into a pipe 9 surrounding the feed pipe 1.
The pipe 9 has a drain 10 to vent fuel collecting in the pipe to atmosphere outside the body of the vehicle or enclosure in which the fuel system embodying the converter is mounted. The pipe 9 is attached to the end wall 31 of the chamber 2 by means of a flange 32.
A normally open valve 11 allows liquid fuel from compartment 4 to enter a second chamber 1 2. The second chamber has an intermediate partition 13 spaced from its end walls to support exit ducts 14 which allow passage to fuel from the chamber 12 to a heat exchanger 15. The
partition also supports a diaphragm 1 6 backed by
a spring 17 and connected by a pivoted linkage
18 to the valve 11.
If the pressure chamber 12 rises above a pre
set value the diaphragm is forced back against the
pressure of spring 1 7 and actuates the linkage to
close the valve 11 and isolate the chamber 12
from the chamber 2. The pre-set value can be
altered by adjustment of the spring pressure by a
conventional servo adjuster 1 9.
The heater exchanger comprises a plurality of
open-ended heat exchange ducts 20 extending
through a water jacket 21 having inlet and outlet
connections 22, 23 to a supply of water, for
example to cooling system of an engine. In order
to prevent possible damage to the heat exchanger
in the event that the water in the cooling system
should freeze, the water jacket may be provided
with an expansion chamber in the form of rubber
beilows. Danger of freezing arises in the event
that the circulation of water through the jacket is
interrupted. When this happens vaporization of
the liquid fuel causes a drop in the water
temperature which may be sufficient to produce
freezing.As the fuel passes along the ducts 20,
heat from the water jacket produces progressive
gasification so that at the downstream ends of the
ducts the fuel is converted into the gaseous state
for supply to the carburettor of the engine to be
powered by the fuel. The gas from the heat
exchanger passes into an outlet chamber 24
which is connected by an outlet pipe 25 to the
carburettor bore through a spring loaded check
valve 26. The valve spring 27 normally holds the
valve 26 closed until on an induction stroke of the
engine a depression occurs in the carburettor
producing suction in the pipe 25 and the chamber
26. The consequent drop in pressure in the
chamber 26 causes the valve 26 to open against
the spring pressure.Normally with a multi
cylinder engine a continuous depression is
present in the carburettor bore and thus the valve
26 remains open to provide a passage for the
gaseous fuel. If however the depression should
fail, the valve 26 closes. This causes a rise in
pressure within the heat exchanger and thence in
the chamber 1 2 so that the valve 11 closes as
previously described, interupting the fuel supply.
In order to allow the carburettor to be primed
before starting up the engine, the valve 26 carries
a collar 27 engageable by a fork 28 at one end of
a pivoted bell-crank lever 29, the other end of the
lever being connected to a mechanical or solenoid
operated puil rod 30 within a housing extending
through the wall of the chamber 24. Movement of the rod 30 thus produces unseating of the valve
26 to allow fuel flow through the converter before
the engine is started.
For manufacturing convenience each chamber
and the heat exchanger is cylindrical in shape
with valve and inlet and outlet orifices in their flat
end walls. The respective cylindrical walls are all
of the same diameter so that they can be joined
together by end flanges or other means in succession to form a single cylindrical body.
In order to meet the danger of fuel leakage between the converter and the carburettor, the outlet pipe is surrounded by a sleeve 33 which is attached to the converter by a flange 34. The sleeve is sealed to the carburettor body at its other end, and, in the same manner as the pipe 9, is vented to the exterior of the vehicle in which the converter is installed.
Claims (Filed on 25-11-83) 1. A converter for liquid petroleum gas (L.P.G.) comprising a first chamber containing a filter to receive liquid petroleum fuel from a supply, a second chamber having a pressure sensitive valve actuator to close a stop valve between the two said chambers when pressure within the second chamber reaches a predetermined value, a heat exchanger to receive liquid fuel from the second chamber and convert it into gaseous form, and a third chamber to receive the gaseous fuel from the heat exchanger and having an outlet valve which opens to allow the gaseous fuel to enter a supply duct to an engine carburettor when the pressure at the end of the said supply duct is below atmospheric.
2. A converter according to claim 1, wherein the first, second and third chambers and the heat exchanger are contiguously arranged within a single outer casing.
3. A converter according to claim 1 or claim 2, including a pressure release valve to allow escape of excess liquid fuel from the first chamber into a drain duct, and a priming device mounted in the third chamber to open the outlet valve independently of the pressure at the end of the supply duct.
4. A converter according to claim 3, wherein the priming device includes a pivotally mounted bell-crank lever engaging at one end with the outlet valve and actuated at the other end mechanically or electromagnetically to displace the outlet valve into an open position against a force biassing the outlet valve towards a closed position.
5. A converter according to any one of claims 1 to 4, wherein the pressure sensitive valve actuator includes a diaphragm displaceable against the force of a spring by excess pressure in the second chamber, to close the stop valve via a pivoted linkage.
6. A converter according to any one of claims 1 to 5, wherein the heat exchanger is in the form of a plurality of tubes through which the fuel passes, and which extend through a water jacket.
7. A converter for liquid petroleum gas, (L.P.G.) substantially as hereinbefore described with reference to the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (7)
1. A converter for liquid petroleum gas (L.P.G.) comprising a first chamber containing a filter to receive liquid petroleum fuel from a supply, a second chamber having a pressure sensitive valve actuator to close a stop valve between the two said chambers when pressure within the second chamber reaches a predetermined value, a heat exchanger to receive liquid fuel from the second chamber and convert it into gaseous form, and a third chamber to receive the gaseous fuel from the heat exchanger and having an outlet valve which opens to allow the gaseous fuel to enter a supply duct to an engine carburettor when the pressure at the end of the said supply duct is below atmospheric.
2. A converter according to claim 1, wherein the first, second and third chambers and the heat exchanger are contiguously arranged within a single outer casing.
3. A converter according to claim 1 or claim 2, including a pressure release valve to allow escape of excess liquid fuel from the first chamber into a drain duct, and a priming device mounted in the third chamber to open the outlet valve independently of the pressure at the end of the supply duct.
4. A converter according to claim 3, wherein the priming device includes a pivotally mounted bell-crank lever engaging at one end with the outlet valve and actuated at the other end mechanically or electromagnetically to displace the outlet valve into an open position against a force biassing the outlet valve towards a closed position.
5. A converter according to any one of claims 1 to 4, wherein the pressure sensitive valve actuator includes a diaphragm displaceable against the force of a spring by excess pressure in the second chamber, to close the stop valve via a pivoted linkage.
6. A converter according to any one of claims 1 to 5, wherein the heat exchanger is in the form of a plurality of tubes through which the fuel passes, and which extend through a water jacket.
7. A converter for liquid petroleum gas, (L.P.G.) substantially as hereinbefore described with reference to the accompanying drawings.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08234201A GB2133078A (en) | 1982-12-01 | 1982-12-01 | Vaporising and supplying LPG |
AU21785/83A AU2178583A (en) | 1982-12-01 | 1983-11-29 | Lpg converter and flow regulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08234201A GB2133078A (en) | 1982-12-01 | 1982-12-01 | Vaporising and supplying LPG |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2133078A true GB2133078A (en) | 1984-07-18 |
Family
ID=10534647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08234201A Withdrawn GB2133078A (en) | 1982-12-01 | 1982-12-01 | Vaporising and supplying LPG |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU2178583A (en) |
GB (1) | GB2133078A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3941341A1 (en) * | 1988-12-15 | 1990-06-28 | Burgasavtotransport | PRESSURE REDUCER EVAPORATOR |
WO1994004813A1 (en) * | 1992-08-13 | 1994-03-03 | King Format Limited | Vapourizer apparatus |
WO2001034962A1 (en) * | 1999-11-09 | 2001-05-17 | James Timothy Sangster | Liquid fuel vapourisation apparatus for fuel injected internal combustion engines |
WO2002090750A1 (en) * | 2001-05-03 | 2002-11-14 | Was Diesel Now Gas Pty Ltd | Fuel delivery system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB727658A (en) * | 1950-10-25 | 1955-04-06 | Cecil Jasper Krow | Improvements in or relating to fuel pressure regulating device for fuel feeding system |
GB826886A (en) * | 1957-12-03 | 1960-01-27 | Century Gas Equipment Company | Liquefied petroleum gas heat exchanger and pressure regulator |
GB865413A (en) * | 1958-06-09 | 1961-04-19 | Bendix Corp | Gas fuel supply system for internal combustion engines |
GB1085303A (en) * | 1964-02-10 | 1967-09-27 | Borg Warner | Liquid petroleum to gas converter |
GB1332024A (en) * | 1971-02-22 | 1973-10-03 | Lng Services Inc | Fuel system for land vehicle power plant |
-
1982
- 1982-12-01 GB GB08234201A patent/GB2133078A/en not_active Withdrawn
-
1983
- 1983-11-29 AU AU21785/83A patent/AU2178583A/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB727658A (en) * | 1950-10-25 | 1955-04-06 | Cecil Jasper Krow | Improvements in or relating to fuel pressure regulating device for fuel feeding system |
GB826886A (en) * | 1957-12-03 | 1960-01-27 | Century Gas Equipment Company | Liquefied petroleum gas heat exchanger and pressure regulator |
GB865413A (en) * | 1958-06-09 | 1961-04-19 | Bendix Corp | Gas fuel supply system for internal combustion engines |
GB1085303A (en) * | 1964-02-10 | 1967-09-27 | Borg Warner | Liquid petroleum to gas converter |
GB1332024A (en) * | 1971-02-22 | 1973-10-03 | Lng Services Inc | Fuel system for land vehicle power plant |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3941341A1 (en) * | 1988-12-15 | 1990-06-28 | Burgasavtotransport | PRESSURE REDUCER EVAPORATOR |
WO1994004813A1 (en) * | 1992-08-13 | 1994-03-03 | King Format Limited | Vapourizer apparatus |
WO2001034962A1 (en) * | 1999-11-09 | 2001-05-17 | James Timothy Sangster | Liquid fuel vapourisation apparatus for fuel injected internal combustion engines |
WO2002090750A1 (en) * | 2001-05-03 | 2002-11-14 | Was Diesel Now Gas Pty Ltd | Fuel delivery system |
Also Published As
Publication number | Publication date |
---|---|
AU2178583A (en) | 1984-06-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |