EP0309141A2 - Fuel treatment device - Google Patents
Fuel treatment device Download PDFInfo
- Publication number
- EP0309141A2 EP0309141A2 EP88308471A EP88308471A EP0309141A2 EP 0309141 A2 EP0309141 A2 EP 0309141A2 EP 88308471 A EP88308471 A EP 88308471A EP 88308471 A EP88308471 A EP 88308471A EP 0309141 A2 EP0309141 A2 EP 0309141A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- mounting
- fuel treatment
- treatment device
- solenoid
- 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- Withdrawn
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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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/16—Feeding by means of driven pumps characterised by provision of personally-, e.g. manually-, operated pumps
Definitions
- This invention relates to a fuel treatment device for incorporation into the fuel system of an internal combustion system, e.g. a compression ignition engine for an agricultural vehicle.
- an internal combustion system e.g. a compression ignition engine for an agricultural vehicle.
- a solenoid-operated diaphragm pump shown generally at 18 is secured by bolts 20 to the mounting 12.
- the solenoid-operated diaphragm pump 18 includes a pumping chamber 22 having a one-way inlet valve 24 (shown only in Fig. 2) and a one-way outlet valve 26 (also shown only in Fig. 2) which serve to permit fuel to pass in only one direction through the chamber 22 from the inlet to the outlet thereof.
- the inlet valve 24 communicates with the inlet port 14, whilst the outlet valve 26 communicates with the filter element 10 so that fuel which has passed through the outlet valve 26, is passed into the filter element 10 to be filtered and then leaves the device through the outlet port 16.
Abstract
A fuel treatment device for an internal combustion engine includes a mounting 12 which carries a part 10 defining a fuel treatment chamber. The mounting defines inlet and outlet ports 14, 16 for connection into the engine fuel system and also a priming pump 18 which is operated by a powered actuating device 32 conveniently an electrical solenoid.
Description
- This invention relates to a fuel treatment device for incorporation into the fuel system of an internal combustion system, e.g. a compression ignition engine for an agricultural vehicle.
- The fuel treatment device may include a fuel filter element through which fuel is drawn to remove solid contaminant from the fuel, or a sedimentation device for removal of solids from the fuel by sedimentation, or a combination of both. The device may further include a fuel heater. In each case, the device includes an inlet port and an outlet port for connection into the fuel system, the inlet and outlet ports conveniently being located within a mounting of the device. It is well known that, when the fuel tank associated with the system is drained by operation of the associated engine, air is drawn into the system and that the air in the system must be purged before a satisfactory fuel flow can be obtained. It is known to provide a hand operable priming pump for this purpose, but hand priming the fuel system is laborious and can also be difficult if the hand priming pump is mounted in a relatively inaccessible position.
- It is an object of the present invention to obviate or mitigate the above disadvantages.
- According to the present invention, there is provided a fuel treatment device for incorporation into the fuel system of an internal combustion engine, said device comprising a mounting whereby the device can be mounted on a support in use, a fuel treatment chamber defined in a part adapted to be secured to the mounting, inlet and outlet ports communicating with the fuel treatment chamber whereby the device can be connected into the fuel system, a fuel priming pump carried on the mounting and communicating with the inlet and outlet ports, and a powered actuating device operably connected with the priming pump, said powered actuating device being carried on said mounting.
- The powered actuating device may be an electrically-, pneumatically-, hydraulically-, and/or vacuum-operated actuator.
- In a preferred embodiment, the powered actuating device is an electrically-operated actuator such as a solenoid.
- In a particularly convenient embodiment, the priming pump is a diaphragm pump operated by an electric solenoid mounted on the diaphragm pump which in turn is secured to said mounting.
- Also according to the present invention, there is provided a fuel system of an internal combustion engine including a fuel treatment device according to the present invention.
- An embodiment of the present invention will now be described, by way of example, with reference to the accompanying drawing, in which:-
- Fig. 1 is a part sectional view of the top part of a fuel treatment device according to the present invention, and
- Fig. 2 is a schematic illustration of a fuel system of an internal combustion engine incorporating a fuel treatment device according to the present invention.
- Referring now to Fig. 1, the fuel treatment device illustrated therein takes the form of a fuel filter device for filtering fuel being supplied to a compression igniton engine. Such a device comprises a filter element 10 (only partly shown) having a form which is known per se and which is secured to the underside of a
mounting 12 which is commonly referred to as a filter head. Such amounting 12 is adapted to be mounted at a convenient location on a motor vehicle (e.g. an agricultural tractor or the like) in a manner which is known per se and which need not be described in detail herein. Themounting 12 includes afuel inlet port 14 and afuel outlet port 16. - A solenoid-operated diaphragm pump shown generally at 18 is secured by
bolts 20 to themounting 12. The solenoid-operateddiaphragm pump 18 includes apumping chamber 22 having a one-way inlet valve 24 (shown only in Fig. 2) and a one-way outlet valve 26 (also shown only in Fig. 2) which serve to permit fuel to pass in only one direction through thechamber 22 from the inlet to the outlet thereof. Theinlet valve 24 communicates with theinlet port 14, whilst theoutlet valve 26 communicates with thefilter element 10 so that fuel which has passed through theoutlet valve 26, is passed into thefilter element 10 to be filtered and then leaves the device through theoutlet port 16. Thepump chamber 22 is closed bydiaphragm 28 which is displaceably secured in a manner known per se to aplunger 30. Theplunger 30 extends into and forms the movable core or armature of a solenoid (not shown) mounted in abody 32 which is secured to themounting 12 by thebolts 20. The arrangement is such that, when the solenoid is energised, theplunger 30 is drawn upwardly so as to move the diaphragm in a direction which increases the volume of thepump chamber 22. A sensing element (indicated schematically at 34) which includes a position sensor 36 (Fig. 2) and electrical switch 38 (Fig. 2) is provided for de-energising the solenoid. When the solenoid is de-energised, the diaphragm is moved by means of acompression spring 40 so as to decrease the volume of thepump chamber 22. In this way, fuel is drawn by the diaphragm pumping action in a manner known per se through theinlet port 14 to pass through thefilter element 10 and be discharged through theoutlet port 16. Such a pump is capable of pumping air and so is capable of priming the fuel system when air has been drawn into the fuel system. - If desired the pump can be operated in the opposite manner so that when the solenoid is energised the diaphragm is moved to reduce the volume of the pumping chamber with the spring acting to increase the volume of the pumping chamber to draw fuel through the inlet.
- The fuel system illustrated in Fig. 2 includes
fuel tank 42 havingfeed line 44 connected to theinlet port 14 andinlet valve 24. For the sake of simplicity, the fuel treatment device is illustrated in Fig. 2 with the various parts thereof shown schematically without illustrating the above-described mechanical juxtaposition. The fuel system further includes afuel injection pump 46 which is fed with filtered fuel vialine 48 connected withoutlet port 16 of the fuel treatment device. Thefuel injection pump 46 includes a low pressure transfer pump which supplies a high pressure pump. However, the transfer pump cannot provide the lift required to draw fuel from thetank 42. In the above described embodiment, the solenoid operateddiaphragm pump 18 operates during normal pumping of fuel from thetank 42 to thefuel injection pump 46 and not just when priming of the fuel system is required after entry of air into the system.
Claims (4)
1. A fuel treatment device for incorporation into the fuel system of an internal combustion engine comprising a mounting (12), a fuel treatment chamber defined in a part (10) adapted to be secured to the mounting, inlet and outlet ports (14, 16) communicating with the fuel treatment chamber whereby the device can be connected into the fuel system, a fuel priming pump (18) carried on the mounting and communicating with the inlet and outlet ports (14, 16) characterised by a powered actuating device (32) operably connected with the priming pump, said powered actuating device (32) being carried on said mounting.
2. A fuel treatment device according to Claim 1 characterised in that said powered actuating device (32) is a solenoid including an armature (30) which is coupled to a movable member of the priming pump (18).
3. A fuel treatment device according to Claim 2 characterised in that said priming pump includes a diaphragm (28) which is coupled to said armature (30).
4. A fuel treatment device according to Claim 3 characterised by a sensing element (34) responsive to the position of the armature (30) for de-energising the solenoid upon completion of the stroke of the armature, and a return spring (40) for returning the armature following de-energisation of the solenoid.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB878722498A GB8722498D0 (en) | 1987-09-24 | 1987-09-24 | Fuel treatment device |
GB8722498 | 1987-09-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0309141A2 true EP0309141A2 (en) | 1989-03-29 |
EP0309141A3 EP0309141A3 (en) | 1989-12-20 |
Family
ID=10624309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88308471A Withdrawn EP0309141A3 (en) | 1987-09-24 | 1988-09-14 | Fuel treatment device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0309141A3 (en) |
JP (1) | JPH01106974A (en) |
GB (1) | GB8722498D0 (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2380656A (en) * | 1940-09-11 | 1945-07-31 | Gen Motors Corp | Fuel pump |
US2640424A (en) * | 1948-01-10 | 1953-06-02 | Gen Motors Corp | Fuel pump |
FR1169859A (en) * | 1956-03-31 | 1959-01-07 | Daimler Benz Ag | Electrically driven pump for fuel delivery |
FR1255385A (en) * | 1960-01-23 | 1961-03-10 | Metailler & Co Ets | Advanced diaphragm pump |
FR2200444A1 (en) * | 1972-09-20 | 1974-04-19 | Kloeckner Humboldt Deutz Ag | |
DE2345592A1 (en) * | 1973-09-10 | 1975-08-14 | Sintronik Elektronik Und Appar | Safety valve for electromagnetic fuel pump - is closed by operating spring of internal combustion engine pump |
DE3213808A1 (en) * | 1982-04-15 | 1983-10-20 | Knecht Filterwerke Gmbh, 7000 Stuttgart | Feed device with delivery pumps and filters for diesel fuel in the case of an internal combustion engine |
DE3638617A1 (en) * | 1986-11-12 | 1988-05-26 | Bosch Gmbh Robert | Liquid filter with attached hand pump |
-
1987
- 1987-09-24 GB GB878722498A patent/GB8722498D0/en active Pending
-
1988
- 1988-09-14 EP EP88308471A patent/EP0309141A3/en not_active Withdrawn
- 1988-09-22 JP JP63236633A patent/JPH01106974A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2380656A (en) * | 1940-09-11 | 1945-07-31 | Gen Motors Corp | Fuel pump |
US2640424A (en) * | 1948-01-10 | 1953-06-02 | Gen Motors Corp | Fuel pump |
FR1169859A (en) * | 1956-03-31 | 1959-01-07 | Daimler Benz Ag | Electrically driven pump for fuel delivery |
FR1255385A (en) * | 1960-01-23 | 1961-03-10 | Metailler & Co Ets | Advanced diaphragm pump |
FR2200444A1 (en) * | 1972-09-20 | 1974-04-19 | Kloeckner Humboldt Deutz Ag | |
DE2345592A1 (en) * | 1973-09-10 | 1975-08-14 | Sintronik Elektronik Und Appar | Safety valve for electromagnetic fuel pump - is closed by operating spring of internal combustion engine pump |
DE3213808A1 (en) * | 1982-04-15 | 1983-10-20 | Knecht Filterwerke Gmbh, 7000 Stuttgart | Feed device with delivery pumps and filters for diesel fuel in the case of an internal combustion engine |
DE3638617A1 (en) * | 1986-11-12 | 1988-05-26 | Bosch Gmbh Robert | Liquid filter with attached hand pump |
Also Published As
Publication number | Publication date |
---|---|
EP0309141A3 (en) | 1989-12-20 |
JPH01106974A (en) | 1989-04-24 |
GB8722498D0 (en) | 1987-10-28 |
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