CN1150219A - Electronically controlled apparatus for fuel heating - Google Patents
Electronically controlled apparatus for fuel heating Download PDFInfo
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- CN1150219A CN1150219A CN 95119289 CN95119289A CN1150219A CN 1150219 A CN1150219 A CN 1150219A CN 95119289 CN95119289 CN 95119289 CN 95119289 A CN95119289 A CN 95119289A CN 1150219 A CN1150219 A CN 1150219A
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- fuel
- heating element
- heating chamber
- tubular type
- fuel tank
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- Lubrication Of Internal Combustion Engines (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The electronically controlled apparatus for fuel heating, preferably intended for engines and units driven by diesel fuel, comprises the electric pipe heating elements built-in the fuel tank and/or in the heating chamber, in the prefilter of the fuel pump and in the main filter, and whose switching ON/OFF is performed by the electronic controller via the switch and the relay. The construction of the apparatus of the present invention is adapted to heavy duty operation (at temp. 60 deg.C below zero and more, shocks, damp), it assures safe and economical functioning, since via the suction line also the interior of the vehicle cab is heated and no separate motor is required.
Description
The present invention relates to by means of the electric device heated fuel oil, the control electronics of the diesel oil under the low temperature preferably, and be used for to automobile with have device by system's cleaning liquid fuel of other independent units supply fuel oils of the motor of diesel driven.
According to International Classification of Patents (ICP), the present invention incorporates FM 02M 31/12 and F02M 37/22 into.
Technical problem solved by the invention is a kind of like this structure of this equipment, and its allows the diesel oil under heating extremely low temperature (be subzero 40 ℃ or lower), simultaneously this equipment open and turn-off and/or move can be by electronic control and/or follow procedure work.According to another aspect of the present invention, provide a kind of technology solution of blockage problem of the whole fuel supply system (comprising fuel tank) of the diesel powered engine that low temperature is caused.
This structure of the present invention has also solved when diesel oil is congealed owing to low temperature, the technical problem that occurs in above-mentioned diesel oil supply system because of the appearance of paraffin and pasty state (mash)/wax shape crystal.
The total simplicity of design is also encased well, and helps to install easily and keep in repair.
Learn a kind of backflow mechanical type fuel heater from Yugoslavia patent application P-362/86, this heater comprises the electric wire of two pipes and a band porcelain tube, and is contained in the fuel sucking pipe place.
This solution is unpractical, because it only helps the heating of this fuel sucking pipe, and is helpless to the heating at fuel pump filter, main filter and fuel tank intermediate fuel oil.
Learn a kind of device that is used for improving freedom of fuel flow from German patent application DE3404817, this device comprises three heating units that are contained in fuel tank, fuel pump filter and the main filter.This solution is unpractical, because the wire heater is installed in filter plug-in and/or the filter housing, thereby is dropped under the situation of periodic replacement filter or filter damage.It is high and expensive that this just makes this solution require.Another shortcoming of described solution is: the wire heater in the fuel tank is installed on fuel sucking pipe and is installed in the prefilter of fuel tank bottom, this just causes the frequent pollution of filter and fuel sucking pipe, simultaneously like this heater of installing can not be heated to be fill main filter container to guarantee the necessary enough fuel oils of the interference-free operation of motor.Another shortcoming of the solution that this is known also is: inlet line, pressure piping and pressure duct are not adiabatic, and this is helpless to keep equal all the time temperature in these pipelines, and the result has increased the consumption of fuel oil and disturbed the operation of motor.
Learn a kind of solution that improves freedom of fuel flow from German patent application DE3120960, this way comprises the heating unit that is loaded on filter plug-in in three its wire heaters also with similar according to the above-mentioned solution of German patent application DE3404817.For the same reason, two kinds of known solutions all are unpractical and same shortcoming are arranged, and the fuel oil prefilter also is contained in the bottom of fuel tank, in a side and be installed in horizontal position.
The problem of waiting until solution exactly is: complicated and unreal land used is installed on fuel heater in the filter plug-in, not adiabatic inlet line and pressure piping, the improper position of prefilter in fuel tank, and be used for the defective of electrical system of through and off of this fuel Heating of switch.
According to the invention provides a kind of solution that is used for the control electronics of fuel Heating, this solution comprises a heating chamber that is installed in the fuel tank, be installed in the electric heating element of tubular type of the filter plug-in below in fuel pump and the main filter, and this solution comprises that also is used for an electronic controller of opening/turn-offing, and this inlet line, pressure piping and pressure duct are adiabatic.
The contrast accompanying schematic figure is described embodiment of the present invention with example below, in these accompanying drawings:
Fig. 1 is the schematic representation that is installed on apparatus for fuel heating in the engine fuel supply system, that have electronic controller;
Fig. 2 is the local longitudinal sectional view of heating chamber in the fuel tank;
Fig. 3 is the local longitudinal sectional view of the prefilter of fuel pump; And
Fig. 4 is the local longitudinal sectional view of main filter housings.
The control electronics that is used for fuel Heating comprises: the heating chamber assembly 2 of fuel tank 1, electronic controller assembly 22, the fuel pump 4 that has prefilter assembly 5, main filter assemblies 8, adiabatic inlet line 11, pressure piping 13 and pressure piping 14, the return line 17 that has the pressure duct 15 of oil nozzle 16 and have pressure valve 18.
Prefilter assembly 5 comprises bearing 6, filter plug-in 7, the electric heating element 19 of tubular type and spring 35.
Fig. 1 represents the position of this heating chamber 2, and this heating chamber 2 is from top insertion fuel tank 1 and vertically placement; It is connected to fuel pump 4 through the inlet line 11 of thermal insulation, and inlet line 32 is connected to heating chamber 2 and is used for vehicle drive chamber interior heating, not shown or system and/or the device described herein.Adiabatic pressure piping 13 is linked main filter 8 from fuel pump 4.Adiabatic pressure piping 14 is linked high-pressure service pump 3 from main filter 8, and return line 17 returns fuel tank 1 through pressure valve 18.Pressure duct 15 is linked oil nozzle 16 from high-pressure service pump 3.The electric heating element 19 of tubular type in the prefilter 5, heating element 20 in the main filter 8 and the heating element 21 (shown in Fig. 2) in the heating chamber 2 are connected to each other and are connected to electronic controller 22 through electrical equipment 34.
Fig. 2 represents heating chamber 2, as above states, and this heating chamber vertically inserts fuel tank 1 inside and is fixed in this fuel tank through flange 36.Inlet line 11 passes flange 36 and puts in this heating chamber 2 and prolong into fuel sucking pipe 12; Return line 31, the inlet line 32 and the temperature transducer 25 that are used for vehicle cab heating also put in this heating chamber in addition, and electric heating element 21 of tubular type and the housing 27 that has a heat insulation layer 30 then are fixed in flange 36, make them be easy to dismounting.
In equipment of the present invention, for example shown in Fig. 2, the fuel sucking pipe 12 of inlet line 11 is placed on the central authorities of heating chamber 2 and/or the central authorities of its housing 27.Be placed with the electric heating element 21 of tubular type along fuel sucking pipe 12 cloth, the end 33 of this heating element is designed to spiral yarn shaped, passes the end that it is inserted with the fuel sucking pipe 12 that is cut into several angle.Temperature transducer 25, return line 31 and inlet line 32 also prolong the electric heating element 21 of fuel sucking pipe 12 and tubular type abreast and lay, and all described parts are all encased by the hollow shell 27 that its inside is lined with heat insulation layer 30.Below flange 36 nearby, pass housing 27 and heat insulation layer 30 and open a discharge orifice 28, and above fuel tank 1 bottom, open an oil-sucking hole 29 nearby, like this, two holes 28,29 that are in this distance are arranged in the same vertical plane and have identical diameter.Heating chamber 2 inserts fuel tank 1 like this, so that its open end in top, fuel tank 1 bottom nearby.In other certain example, heating chamber 2 can also insert in a different manner and be fixed in the fuel tank 1, all described parts 12,21,25,31 and 32 also can arrange in a different manner, and have that the housing 27 in heat insulation layer 30 and hole 28,29 also can design by different way.
Electric heating element 21 of tubular type and temperature transducer 25 are connected in electronic controller 22 through electric utility 34.
As can be seen from Figure 3, insert the electric heating element 19 of spiral yarn shaped tubular type, spring 35 is being housed on this heating element and filter plug-in 7 is housed on this spring in the bottom of the housing 6 of the prefilter 5 of fuel pump 4.
Fig. 4 demonstrates in the bottom of the housing 9 of main filter 8 the electric heating element 20 of tubular type is housed, and filter plug-in 10 is positioned over this heating element.
The electric heating element 19,20 of above-mentioned tubular type can be designed to a circle, two circle or multi-circle spiral flow lines.
Be installed in fuel oil, the electric heating element 19,20,21 of the tubular type of all key positions of the supply system of diesel oil preferably, open/turn-off through relay 24, opening/turn-off by electronic controller 22 of this relay carried out according to the fuel oil temperature in the fuel tank 1, temperature transducer 25 induction within this heating chamber 1 and/or under fuel oil send into the fuel oil temperature at a place.This helps the fuel oil in the heated fuel oil case 1, and adds heat control and accurately regulated.So, just there is not fuel oil overheated or cold excessively, the perhaps danger that is being switched on when not required of heating element 19,20,21.After connecting switch 23, only the fuel oil temperature in fuel tank 1 is lower than under 2.5 ℃ the situation relay 24 and just connects heating element 19,20,21.During heating when this fuel oil temperature reached 40 ℃, relay 24 turn-offed heating element 19,20,21, and all heating elements turn-off simultaneously or by degree successively, decide on the fuel oil temperature of all key positions.When fuel oil temperature dropped to 2.5 ℃, relay 24 was connected heating element 19,20,21 once more.When switch 23 first connections, relay 24 is connected heating element 19,20,21 with about 10 seconds time lag.At the output terminal of relay 24, electronic controller 22 is protected to prevent the short circuit with a terminal of not addressing.Described fuel Heating control mode guarantees safety and economic operation.The mechanical structure of this electronic controller 22 is suitable for moving under the abominable operating conditions, and double-sided printed-circuit board guarantees very high mechanical strength and is connected reliably." abominable operating conditions " specifically is meant to subzero 60 ℃ low temperature, violent impact and humidity.
As mentioned above, when temperature transducer 25 owing to fuel tank 1 in temperature drop to and/or be lower than 2.5 ℃ and make when induction, electronic controller 22 is connected heating elements 19,20,21 by relay 24.Fuel oil in the electric heating element 21 heated fuel oil casees 1 of tubular type in the heating chamber 2.Heated fuel oil in the heating chamber 2, together with heated air, pass discharge orifice 28 and flow to fuel tank 1 near heating chamber 2 places, and heated fuel oil and melted paraffin, this makes heated fuel oil pass oil-sucking hole 29 and is inhaled in the heating chamber 2, enters fuel sucking pipe 12 and adiabatic inlet line 11 then.Kindred circumstances takes place in the inlet line 32 for the inner heating of haulage vehicle, Truck cab, passenger stock or bus usefulness.
Through inlet line 11, fuel oil flows to fuel pump 4, the electric heating element 19 of tubular type has heated the fuel oil in the prefilter 5 and has melted paraffin in the filter plug-in 7 whereby in this pump, passes fuel pump 4 flowing along adiabatic pressure piping 13 to main filter 8 so that impel.The electric heating element 20 of tubular type on the bottom of the housing 9 of main filter 8 is owing to heated fuel oil melts paraffin in the filter plug-in 10, this makes fuel oil flow through main filter 8 and enters high-pressure service pump 3 along adiabatic pressure piping 14, enters the motor of not addressing by pressure duct 15 and oil nozzle 16 then.
Be used for fuel oil, diesel oil preferably, heating plant be intended to be specifically designed under the winter condition when outside air temperature is reduced to subzero 15 ℃, to the fuel Heating of the motor of vehicle and unit.Fuel oil under this condition particularly at the fuel oil of subzero 8 ℃ of filtrations, in fuel tank 1 and in pipeline 11,13,14, and is congealed in the prefilter 5 of fuel pump 4 and in main filter 8.It is impossible not having the operation of equipment diesel motor of the present invention under this condition, because paraffin in the fuel oil and paste have hindered normal operation because of stopping up whole fuel supply system.
When under cryogenic conditions, piloting engine, when switch 23 had not before been connected and when heating element 19,20,21 is also connected without relay road 24, in case connect switch 23, the fuel oil of the bottom of the heating chamber 2 in the fuel tank 1 was heated to 0 ℃ in ten minutes, and it is heated to 80 ℃ in heating chamber, and the initial temperature of fuel oil is subzero 25 ℃.
The part of heated fuel oil flows back to heating chamber 2 and the fuel oil the heated fuel oil case 1 by way of parenthesis from main filter 8 through return line 17 (having the pressure valve 18 of being installed).
With the electric power consumption of equipment heated fuel oil of the present invention, and/or the power consumpiton of the electric heating element 19,20,21 of tubular type is relevant with engine power, and for example, required total electric output is between 100W and 300W for the motor of 36kW to 450kW.Heating element 19 in prefilter 5 consumes under the situation of 20W, and the heating element 20 in the main filter 8 consumes 40W, and the heating element in the heating chamber 2 21 consumes 200W in the fuel tank 1.
Following advantage is arranged at the bottom that the electric heating element 19,20 of tubular type is installed in the housing 9 of the bottom of housing 6 of prefilter 5 and/or main filter 8, promptly between by means of the period of heating of the present invention, promoted that the temperature to the top is moved from the bottom, thereby guaranteed its high efficiency of transmission.
Owing to come heated fuel oil through the backflow of return line 17 by means of heating element 21 and heated fuel oil, a kind of thermo siphon (ther-mosyphon) effect appears in the heating chamber 2 of fuel tank 1, it makes cold fuel oil mix effectively with heated fuel oil energy, has realized constant fuel oil temperature thus in fuel tank 1.Also realized stationary temperature in inlet line 11, pressure piping 13 and return line 17, this just causes lower oil consumption rate, oil inflame more completely in the motor of not addressing, and the low concentration of harmful matter in the combustion gas.
The fuel sucking pipe 32 that injects in the heating chamber 2 of fuel tank 1 makes and can partly warm oneself for the carrying of vehicle simultaneously, so neither needs independent motor also not need the heating element that adds, and the known solution of this technical problem all fails to illustrate this point.Compare with known solution, present device also has following advantage: only heat the fuel oil that is consumed quantity in heating chamber 2, rather than the fuel oil of pumping in advance of entire quantity, and from fuel tank 1 to high-pressure service pump 3 whole fuel supply system all is heated and by adiabatic, thereby the fuel oil of congealing is heated at all the intermediary element places at this fuel supply system, if switch 23 is connected continuously, then the operating temperature of fuel oil is incited somebody to action automatically and kept continuously to electronic controller 22 in whole fuel supply system, this will prevent that fuel oil from congealing, and structure and assembling are simple, and when changing heating element 19,20 filter plug-in 7,10 o'clock, be not dropped, because they are by permanent installation, filter plug-in 7,10 cleaning is easy to carry out and need not take long to, no longer be absolutely necessary at fuel tank 1 middle filtrator plug-in unit, because the fuel sucking pipe 12 in heating chamber 2 is set at above the bottom of fuel tank 1 nearby.
Claims (7)
1. the control electronics that is used for heated fuel oil (fuel oil that preferably is used for the explosive motor of diesel driven), this equipment is included in the fuel tank, the electric heating element of tubular type in the prefilter of fuel pump and in main filter, this fuel tank, fuel pump and main filter are series at an oil suction, pressure and pressure duct and have on the high-pressure service pump of an oil nozzle, it is characterized in that: the electric heating element of tubular type (21) inserts heating chamber (2), this heating chamber is arranged in the inside of fuel tank (1) vertically, and the electric heating element of tubular type (19) places the below of filter plug-in (7) of housing (6) of the prefilter (5) of fuel pump (4), and the electric heating element of tubular type (20) places the below of filter plug-in (10) of the housing (9) of main filter (8); Heating chamber (2) is fixed in the upper inside walls of fuel tank (1) by means of flange (36) and extends downward top, fuel tank (1) bottom and nearby finishes, and fuel sucking pipe (12) inserts the central authorities of heating chamber (2) vertically, and this fuel sucking pipe extends up to the lower limb of its inner housing (27) with heat insulation layer 30 thermal insulation; The electric heating element of tubular type (21) lays along described fuel sucking pipe (12), and the pipe (31) of temperature transducer (25), return line (17) and the inlet line (32) that is used for the inside heating of unillustrated vehicle cab also insert the inside of this heating chamber (2) vertically; The heating of fuel oil is regulated and is controlled through switch (23), the circuit device that continues (24), temperature transducer (25) and insurance (26) by electronic controller (22).
2. equipment according to claim 1, it is characterized in that: the fuel sucking pipe (12) in the heating chamber (2) is cut into several angle and extend outwards becomes inlet line (11), and the pipe (31) of temperature transducer (25), return line (17) and the end of inlet line (32) also are cut into several angle.
3. according to described equipment in the above claim, it is characterized in that: the end (33) of the electric heating element of tubular type (21) in the heating chamber (2) is the form of a kind of helix that has a circle spiral at least.
4. according to described equipment in the above claim, it is characterized in that: on the top of heating chamber (2) and pass the housing (27) that has heat insulation layer (30) and leave a discharge orifice (28), and leave an oil-sucking hole (29) with the same manner in its underpart.
5. according to described equipment in the above claim, it is characterized in that: the electric heating element of this tubular type (19,20) has a kind of helix form that has a circle spiral at least.
6. according to described equipment in the above claim, it is characterized in that: inlet line (11), pressure piping (13) and pressure piping (14) are adiabatic, if operating conditions needs, pressure duct (15) and return line (17) also are adiabatic.
7. equipment according to claim 1, it is characterized in that: if the temperature in the fuel tank (1) is lower than 2.5 ℃, then switch (23) is given relay (24) energising, this relay is then given the electric heating element of tubular type (19,20,21) energising, and when this temperature reaches 40 ℃, turn-off them, and under the first situation about connecting of switch (23), this relay (24) is switched on several seconds time lag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95119289 CN1150219A (en) | 1995-11-15 | 1995-11-15 | Electronically controlled apparatus for fuel heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95119289 CN1150219A (en) | 1995-11-15 | 1995-11-15 | Electronically controlled apparatus for fuel heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1150219A true CN1150219A (en) | 1997-05-21 |
Family
ID=5081931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95119289 Pending CN1150219A (en) | 1995-11-15 | 1995-11-15 | Electronically controlled apparatus for fuel heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1150219A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1302939C (en) * | 2003-02-24 | 2007-03-07 | 菏泽创新风险投资有限公司 | Intelligent temperature-controlling and fuel-supplying system of diesel car |
| CN101238275B (en) * | 2005-08-06 | 2011-07-20 | 宏牛加热元件有限及两合公司 | Heating system |
| CN101705869B (en) * | 2009-10-29 | 2012-08-22 | 浙江机电职业技术学院 | Safety control system for fuel engine of life boat |
| CN104832324A (en) * | 2014-02-19 | 2015-08-12 | 北汽福田汽车股份有限公司 | Electric diesel heating system and automobile |
-
1995
- 1995-11-15 CN CN 95119289 patent/CN1150219A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1302939C (en) * | 2003-02-24 | 2007-03-07 | 菏泽创新风险投资有限公司 | Intelligent temperature-controlling and fuel-supplying system of diesel car |
| CN101238275B (en) * | 2005-08-06 | 2011-07-20 | 宏牛加热元件有限及两合公司 | Heating system |
| US8680437B2 (en) | 2005-08-06 | 2014-03-25 | Eichenauer Heizelemente Gmbh & Co. Kg | Heating system |
| CN101705869B (en) * | 2009-10-29 | 2012-08-22 | 浙江机电职业技术学院 | Safety control system for fuel engine of life boat |
| CN104832324A (en) * | 2014-02-19 | 2015-08-12 | 北汽福田汽车股份有限公司 | Electric diesel heating system and automobile |
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