CN202851218U - Fuel injection system using heat pipe technology to take heat from exhaust gas for diesel evaporation - Google Patents
Fuel injection system using heat pipe technology to take heat from exhaust gas for diesel evaporation Download PDFInfo
- Publication number
- CN202851218U CN202851218U CN2012204805468U CN201220480546U CN202851218U CN 202851218 U CN202851218 U CN 202851218U CN 2012204805468 U CN2012204805468 U CN 2012204805468U CN 201220480546 U CN201220480546 U CN 201220480546U CN 202851218 U CN202851218 U CN 202851218U
- Authority
- CN
- China
- Prior art keywords
- heat pipe
- heat
- diesel
- vaporization
- injection system
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The utility model creates and discloses a fuel injection system using heat pipe technology to take heat from exhaust gas for diesel evaporation. The fuel injection system using the heat pipe technology to take the heat from the exhaust gas for the diesel evaporation comprises a cylinder body, a piston (1), a cylinder cover (4), an electronic fuel injector (5), an air inlet channel (2), an air exhaust channel (17), an air inlet valve (3) and an air exhaust valve (14), a diesel evaporating injector (9) and a diesel evaporator (24) are arranged on the cylinder cover (4), the diesel evaporator (24) comprises a heat pipe (15) and an evaporating cavity (23), the heat pipe (15) is composed of a heat pipe evaporating section (16), a heat pipe thermal insulation section (18) and a heat pipe condensing section (20), the evaporating cavity (23) is installed on the cylinder cover (4), the heat pipe evaporating section (16) is arranged on the air exhaust channel (17), the heat pipe condensing section (20) is arranged in the evaporating cavity (23), the heat pipe thermal insulation section (18) is arranged on the cylinder cover (4), and the electronic fuel injector (5) is communicated with the evaporating cavity (23). Due to the structure, the fuel injection system using the heat pipe technology to take the heat from the exhaust gas for the diesel evaporation has the advantages of being simple and compact in structure, good in forming quality of mixed gas in the cylinder, high in combustion efficiency, remarkable in the effect of energy conservation and emission reduction, capable of using the heat of the exhausting air for diesel evaporating and the like.
Description
Technical field
The invention relates to a kind of diesel fuel injection system, particularly a kind of fuel injection system of utilizing heat-pipe technology heat-obtaining vaporization diesel oil from exhaust.
Background technique
In and the situation that Global Environmental Problems is day by day serious day by day exhausted at world petroleum resource, as main energy consumption and emission source and use widely diesel engine, need to develop its energy-conserving and emission-cutting technology.
The diesel fuel injection system is the diesel engine core component, and it determines oil consumption and the discharging of diesel engine.Because diesel oil viscosity is larger, cetane number is high, the diesel oil high pressure need to be sprayed into cylinder of diesel engine, diesel oil is fully atomized, then with air mixed combustion.Conventional diesel combustion is a kind of combustion manner that burns while spraying, and this combustion manner generates the noxious emissions such as soot (PM) and nitrogen oxide (NOX) easily.In recent years, people have studied diesel engine homogeneous charge compression ignition combustion manner (HCCI combustion manner), it is before mixture combustion, diesel oil and air homogeneous are mixed, the environment that this combustion manner can avoid soot and nitrogen oxide to generate, namely avoid the high temperature anoxic, effectively reduce the generation of soot and nitrogen oxide.But the difficult point of this combustion manner is preparation and the burning control constantly of homogeneous charge, thereby has limited its application.In addition, the diesel engine exhaust port delivery temperature is 300-500 ℃, and the heat that exhaust is taken away accounts for about 1/3rd of fuel gross calorific value, causes a large amount of heat-energy losses, and it has limited the raising of the diesel engine thermal efficiency.
Diesel oil is sprayed into cylinder of diesel engine, need fuel injection system.Fuel injection system mainly contains three kinds of systems at present: mechanical pump fuel injection system, monoblock pump fuel injection system and high pressure common rail fuel injection system.The mechanical pump fuel injection system is relatively simple, but jet pressure is limited.The monoblock pump fuel injection system need to be 1 high-pressure service pump of each cylinder assembling, and peak injection pressure is high.High pressure common rail fuel injection system adopts high-pressure fuel-feed pump, can Flexible Control injection time and fuel injection quantity.The high-pressure common-rail injection system manufacturing technology level requires high, and the precision of each constituent element is all very high, and the couple gap control is strict, and the diesel oil cleaning degree has been proposed very high requirement, because impurity meeting accelerated motion pair is worn and torn even made it stuck.Compare with the gasoline engine fuel ejecting system, three kinds of fuel injection systems of diesel engine all need to provide the oil pump than high fuel pressure, so the fuel injection system manufacturing technology of diesel engine is higher, and complex structure, cost is high, and has increased the breakdown in the motor rate.
On the other hand, heat pipe is as a kind of efficient Thermal Conduction Equipment, have superior temperature conductivity and technical feature, obtained significant effect at the aspects such as cooling of the renovating of heat recovery, energy-saving and emission-reduction, heat and mass equipment, electronic device, the application in engineering is increasingly extensive.Heat pipe generally is comprised of shell, liquid-sucking core and end cap, fill with suitable working liquid body after extracting negative pressure in will managing out, make to be sealed after being full of liquid in the liquid-sucking core capillary porous material of being close to inner tube wall, an end of pipe is heat pipe evaporator section, one end is heat pipe condenser section, and two sections centres are the heat pipe adiabatic section.Liquid evaporation vaporization in capillary core when an end of heat pipe is heated, steam flows to the other end heat release condensation and forms liquid under small pressure reduction, and liquid flows back to heat pipe evaporator section along how empty material by the effect of capillary force again.So circulation is not own, and heat is passed to the other end from heat pipe one end.Its main feature is: the thermal conductivity that (1) is very high, and inside heat pipe relies on the phase-change heat transfer of working liquid body, and thermal resistance is very little, and with Metal Phase ratios such as copper, aluminium, the heat pipe of unit weight can transmit the heat of several orders of magnitude more.(2) good isothermal, the steam of heat pipe inner chamber is in saturation state, and pressure drop is very little, so temperature drop is very little.One class heat pipe can be in the situation that input temp significantly changes, and vapor (steam) temperature changes minimum, approximate isothermal.(3) variable density of heat flow rate, heat pipe can independently change the heating area of evaporator section or condensating section, namely with less heating area input heat, with larger film-cooled heat quantity of heat given up, or with larger heating area input heat, with less film-cooled heat quantity of heat given up, heat pipe can change density of heat flow rate.(4) reversibility of direction of heat flow, the inside heat pipe circulation power is capillary force, the arbitrary end of the heat pipe of horizontal positioned can be as fire end.
How utilizing in the exhaust waste-gas heat and heat-pipe technology to improve diesel combustion efficient and reduce discharging is a very important problem.For the problems referred to above, many manufacturers and knowledgeable people have dropped into a large amount of man power and materials and have developed and develop, but not yet have so far comparatively ideal product to emerge.
Summary of the invention
The problems referred to above that exist in order to overcome existing conventional diesel fuel engine injection system, the purpose of the invention provide a kind of fuel injection system of utilizing heat in the exhaust, utilizing heat-pipe technology heat-obtaining vaporization diesel oil from exhaust.
The invention solves the problems of the technologies described above the technological scheme that adopts, it comprises cylinder body, piston, cylinder head, electric-controlled fuel injector, cylinder head is provided with intake duct and air outlet flue, correspondence is equipped with intake valve and exhaust valve on intake duct and air outlet flue, and cylinder body, piston and cylinder head consist of the firing chamber; Described cylinder head is provided with diesel oil evaporation sparger, diesel oil evaporation device, the diesel oil evaporation device comprises heat pipe, vaporization cavity, heat pipe is comprised of heat pipe evaporator section, heat pipe adiabatic section and heat pipe condenser section, the vaporization cavity is installed on the cylinder head, heat pipe evaporator section is arranged on the air outlet flue, heat pipe condenser section is arranged in the vaporization chamber of vaporization cavity, and the heat pipe adiabatic section is connected between heat pipe evaporator section and the heat pipe condenser section and is arranged on the cylinder head, and electric-controlled fuel injector is connected with the vaporization chamber of vaporization cavity.
Described diesel oil evaporation sparger comprises spring, tappet, armature, coil, epicoele, seal ring, valve, tappet is arranged on epicoele and the vaporization chamber by seal ring, one end of tappet is fixedly connected with armature, the other end of tappet is connected with valve, armature matches with coil, and spring is arranged in the epicoele and is set on the tappet.
Described heat pipe is made by stainless steel or carbon steel, is filled with working liquid body in the heat pipe, and working liquid body is naphthalene or Dowtherm-A.
After adopting said structure, the invention has following advantage and effect:
1. the fuel injection system of utilizing heat-pipe technology heat-obtaining vaporization diesel oil from exhaust of the present invention takes full advantage of the exhaust gas heat diesel oil of vaporizing, and has improved energy utilization efficiency;
2. the invention does not need the oil pump of high pressure, has avoided the high manufacture cost of conventional diesel engine high-pressure fuel injection system;
3. the invention has improved quality of mixing gas mixture in the cylinder, has finally improved diesel combustion efficient and has reduced discharging;
4. the invention is simple and compact for structure, is directly installed on the cylinder head.
Description of drawings
Fig. 1 is the structural representation of the invention.
Wherein 1 be piston, 2 for intake duct, 3 for intake valve, 4 for cylinder head, 5 for electric-controlled fuel injector, 6 for spring, 7 for tappet, 8 for armature, 9 for the diesel oil evaporation sparger, 10 for wiring terminal, 11 for coil, 12 for epicoele, 13 for seal ring, 14 for exhaust valve, 15 for heat pipe, 16 for heat pipe evaporator section, 17 for air outlet flue, 18 for the heat pipe adiabatic section, 19 for the firing chamber, 20 for heat pipe condenser section, 21 for valve, 22 for vaporization chamber, 23 for vaporization cavity, 24 for the diesel oil evaporation device.
Embodiment
Shown in Figure 1, utilize the specific embodiments of heat-pipe technology fuel injection system of heat-obtaining vaporization diesel oil from exhaust for the invention, it comprises cylinder body, piston 1, cylinder head 4, electric-controlled fuel injector 5, cylinder head 4 is provided with intake duct 2 and air outlet flue 17, correspondence is equipped with intake valve 3 and exhaust valve 14 on intake duct 2 and air outlet flue 17, cylinder body, piston 1 and cylinder head 4 consist of firing chamber 19, described cylinder head 4 is provided with diesel oil evaporation sparger 9 and diesel oil evaporation device 24, diesel oil evaporation device 24 comprises heat pipe 15 and vaporization cavity 23, heat pipe 15 is by heat pipe evaporator section 16, heat pipe adiabatic section 18 and heat pipe condenser section 20 form, vaporization cavity 23 is installed on the cylinder head 4, heat pipe evaporator section 16 is arranged on the air outlet flue 17, heat pipe condenser section 20 is arranged in the vaporization chamber 22 of vaporization cavity 23, heat pipe adiabatic section 18 is connected between heat pipe evaporator section 16 and the heat pipe condenser section 20 and is arranged on the cylinder head 4, and electric-controlled fuel injector 5 is connected with the vaporization chamber 22 of vaporization cavity 23.
Described diesel oil evaporation sparger 9 comprises spring 6, tappet 7, armature 8, wiring terminal 10, coil 11, epicoele (12), seal ring 13, valve 21, tappet 7 is arranged on epicoele 12 and the vaporization chamber 22 by seal ring 13, one end of tappet 7 is fixedly connected with armature 8, the other end of tappet 7 is connected with valve 21, armature 8 matches with coil 11, and spring 6 is arranged in the epicoele 12 and is set on the tappet 7.
Described heat pipe 15 is made by stainless steel or carbon steel, is filled with working liquid body in the heat pipe 15, and working liquid body is naphthalene or Dowtherm-A.Electric-controlled fuel injector 5 sprays into diesel oil in the vaporization chamber 22, because diesel engine exhaust port 17 delivery temperatures are 300-500 ℃, utilize the phase transition heat principle of heat pipe 15 interior working liquid bodys, air outlet flue 17 interior exhaust gas heats can be passed to the diesel oil in the vaporization chamber 22, vaporization after the diesel oil heat absorption.
The below utilizes the fuel injection system working procedure of heat-pipe technology heat-obtaining vaporization diesel oil from exhaust take quartastroke engine as example explanation.
After the diesel engine normal operation, when exhaust stroke finished, aspirating stroke began, and intake valve 3 is opened, and exhaust valve 14 cuts out, and piston 1 is descending, firing chamber 19 interior generation negative pressure, and fresh air enters firing chamber 19 from intake duct 2.
When the aspirating stroke end, during the beginning compression stroke, piston 1 is up, and intake valve 3 and exhaust valve 14 are closed, and piston compression and combustion chamber 1 19 interior air raise air pressure.Simultaneously, coil 11 gets electric rear attraction armature 8, and tappet 7 down moves, and valve 21 is opened, and course of injection begins, and the gaseous state diesel oil in the vaporization chamber 22 spray into firing chamber 19, and gaseous state diesel oil mixes with fresh air.When course of injection finishes, coil 11 dead electricity, tappet 7 up moves under spring 6 effects, and valve 21 is closed.Mixed gas takes fire, and power stroke begins.
Complete when the work done stroke, when exhaust stroke began, intake valve 3 was closed, and exhaust valve 14 is opened, and waste gas enters in the air outlet flue 17 from firing chamber 19, and firing chamber 19 interior gas pressures reduce.Diesel engine begins new circulation.
The above is the concrete innovation and creation embodiment of the invention; be not that any pro forma restriction is made in the invention; do not breaking away from the technological scheme basis of the invention, the simple modification of having done, equivalent variations or modification all fall into the protection domain of the invention.
Claims (3)
1. fuel injection system of utilizing heat-pipe technology heat-obtaining vaporization diesel oil from exhaust, comprise cylinder body, piston (1), cylinder head (4), electric-controlled fuel injector (5), cylinder head (4) is provided with intake duct (2) and air outlet flue (17), at intake duct (2) and the upper correspondence of air outlet flue (17) intake valve (3) and exhaust valve (14) are installed, cylinder body, piston (1) and cylinder head (4) consist of firing chamber (19), it is characterized in that: described cylinder head (4) is provided with diesel oil evaporation sparger (9) and diesel oil evaporation device (24), diesel oil evaporation device (24) comprises heat pipe (15) and vaporization cavity (23), heat pipe (15) is by heat pipe evaporator section (16), heat pipe adiabatic section (18) and heat pipe condenser section (20) form, vaporization cavity (23) is installed on the cylinder head (4), heat pipe evaporator section (16) is arranged on the air outlet flue (17), heat pipe condenser section (20) is arranged in the vaporization chamber (22) of vaporization cavity (23), heat pipe adiabatic section (18) is connected between heat pipe evaporator section (16) and the heat pipe condenser section (20) and is arranged on the cylinder head (4), and electric-controlled fuel injector (5) is connected with the vaporization chamber (22) of vaporization cavity (23).
2. the fuel injection system of utilizing heat-pipe technology heat-obtaining vaporization diesel oil from exhaust according to claim 1, it is characterized in that: described diesel oil evaporation sparger (9) comprises spring (6), tappet (7), armature (8), coil (11), epicoele (12), seal ring (13), valve (21), tappet (7) is arranged on epicoele (12) and the vaporization chamber (22) by seal ring (13), one end of tappet (7) is fixedly connected with armature (8), the other end of tappet (7) is connected with valve (21), armature (8) matches with coil (11), and spring (6) is arranged in the epicoele (12) and is set on the tappet (7).
3. the fuel injection system of utilizing heat-pipe technology heat-obtaining vaporization diesel oil from exhaust according to claim 1 and 2, it is characterized in that: described heat pipe (15) is made by stainless steel or carbon steel, heat pipe is filled with working liquid body in (15), and working liquid body is naphthalene or Dowtherm-A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204805468U CN202851218U (en) | 2012-09-20 | 2012-09-20 | Fuel injection system using heat pipe technology to take heat from exhaust gas for diesel evaporation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204805468U CN202851218U (en) | 2012-09-20 | 2012-09-20 | Fuel injection system using heat pipe technology to take heat from exhaust gas for diesel evaporation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851218U true CN202851218U (en) | 2013-04-03 |
Family
ID=47982425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204805468U Expired - Fee Related CN202851218U (en) | 2012-09-20 | 2012-09-20 | Fuel injection system using heat pipe technology to take heat from exhaust gas for diesel evaporation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851218U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865172A (en) * | 2012-09-20 | 2013-01-09 | 金华三人科技有限公司 | Fuel spraying system for utilizing heat pipe technology to extract heat vaporized diesel oil from exhaust gas |
| WO2017084902A3 (en) * | 2015-11-16 | 2018-02-15 | Robert Bosch Gmbh | An engine block which protects fuel injector against corrosion |
-
2012
- 2012-09-20 CN CN2012204805468U patent/CN202851218U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865172A (en) * | 2012-09-20 | 2013-01-09 | 金华三人科技有限公司 | Fuel spraying system for utilizing heat pipe technology to extract heat vaporized diesel oil from exhaust gas |
| WO2017084902A3 (en) * | 2015-11-16 | 2018-02-15 | Robert Bosch Gmbh | An engine block which protects fuel injector against corrosion |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102865172A (en) | Fuel spraying system for utilizing heat pipe technology to extract heat vaporized diesel oil from exhaust gas | |
| CN105114193B (en) | A kind of Methanol/Diesel Dual Fuel diesel engine fuel oil supply method | |
| CN101403350A (en) | Internal combustion directly-heating steam engine | |
| CN104454247A (en) | Oil-water hybrid power engine and working method thereof | |
| CN111197532A (en) | Hydrogen/methanol composite fuel engine | |
| CN107178440B (en) | Efficient, energy-saving, environment-friendly and safe oil-water engine and control method | |
| CN202851218U (en) | Fuel injection system using heat pipe technology to take heat from exhaust gas for diesel evaporation | |
| CN101713331A (en) | Backfire four-stroke adiabatic internal-combustion engine | |
| CN102011645B (en) | Reciprocating piston type engine capable of doing work by multi-medium vaporization mixed combustion | |
| CN1272539C (en) | Dimethyl ether engine efficient, ultra-low emission combustion system | |
| CN202153005U (en) | Constant temperature difference source device capable of burning fuel oil controllably | |
| CN201925021U (en) | Reciprocating-piston engine powered by energy generated by multimedia vaporized mixing combustion | |
| CN2597683Y (en) | IC engine using steam energy | |
| CN206290324U (en) | A kind of efficient diesel rate combustion chamber | |
| CN103075284B (en) | Ejection system for heating and also vaporizing diesel oil by utilizing piston motion and piston temperature | |
| CN104564433A (en) | Full-heat collection differential step type mist aided fuel and gas engine | |
| CN104806382B (en) | It is the automotive fuel carrying method of fuel to use gas-liquid two-phase natural gas | |
| CN103557070A (en) | Heat-absorption type dry ice engine | |
| CN209925127U (en) | Fuel evaporation-promoting energy-saving device for internal combustion engine | |
| CN107355317A (en) | A kind of internal-combustion steam engine | |
| CN203463198U (en) | Methyl alcohol/gasoline dual-fuel carburetor and engine | |
| CN101713354A (en) | Water backheating boosting energy-saving internal-combustion engine | |
| CN102213137B (en) | Double-piston two-stroke internal combustion engine with independent combustion chamber | |
| CN202628352U (en) | Fuel injection device | |
| CN201852091U (en) | Energy-saving vaporization furnace end |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20150920 |
|
| EXPY | Termination of patent right or utility model |