CN102155339A - High-viscosity fuel preheating system for diesel engine - Google Patents
High-viscosity fuel preheating system for diesel engine Download PDFInfo
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- CN102155339A CN102155339A CN2011100952345A CN201110095234A CN102155339A CN 102155339 A CN102155339 A CN 102155339A CN 2011100952345 A CN2011100952345 A CN 2011100952345A CN 201110095234 A CN201110095234 A CN 201110095234A CN 102155339 A CN102155339 A CN 102155339A
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- 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
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Abstract
The invention discloses a high-viscosity fuel preheating system for a diesel engine, relating to the technical field of diesel engines of directly using high-viscosity fuel. The high-viscosity fuel preheating system comprises a heat exchanger (11), a temperature sensor (8), an exhaust control valve (12) and a controller (13), wherein an exhaust hole of an engine (1) is connected with an exhaust pipe (2) for exhausting waste gas, the exhaust pipe (2) is provided with a branch pipe and connected with the heat exchanger (11) through a heat exchanger air inlet pipe (4), and the exhaust control valve (12) is arranged on the heat exchanger air inlet pipe (4); a heat exchanger gas outlet pipe (5) is connected with a tail gas treatment device; and an oil tank (10) is connected with an oil inlet of the heat exchanger (11) through an oil pipe (6), and an oil outlet of the heat exchanger (11) is connected with an oil spraying pump (9) through the oil pipe (6) and introduced into the engine (1). In the invention, oils such as jatropha curcasl oil and the like are heated by using the heat exchanger with a heat energy exhausting function in a combustion chamber to ensure that viscosity and flowability as well as spraying condition of the oil spraying nozzle are improved.
Description
Technical field
The present invention relates to the Diesel Engine Technique Field of direct combusting high glutinous degree fuel oil, concretely, is the pre-heating system of the combusting high glutinous degree fuel oil of a kind of diesel engine.
Background technique
As the substitute fuel of internal-combustion engine, in the current Biomass Energy Utilization, the most common is exactly to utilize living beings to produce liquid fuel and gaseous fuel.At present, utilizing vegetable oil or modified vegetable oil to use as diesel fuel or with the diesel oil blending more and more is subject to people's attention.
Vegetable oil mainly is made up of water-fast triglyceride, and its chemical structure is than diesel oil complexity, and wherein fatty acid is connected with glycerine by fat.Compare with diesel oil, vegetable oil has following characteristics: its molecular proportion diesel oil molecules is big 3 times, and physics, chemical property are all different with diesel oil; The viscosity height, volatility is poor, the spray droplet diameter is big, spray penetration is big; Indexs such as flash-point, density, carbon residue, ash content, Sulpher content all meet the Diesel oil standard; Calorific value is lower slightly, but because of density is big, the volume calorific value is more approaching; Cetane number is slightly less than Diesel oil standard-required value between 37～45, but can satisfy the requirement of diesel combustion; Cloud point generally between-3.9～10 ℃, can satisfy the index request of diesel oil more than-No. 20.
Wherein, Jatropha curcas oil is exactly a kind of vegetable oil that is expected to become the diesel engine alternative fuel.But because the viscosity of Jatropha curcas oil is higher, can bring following problem when diesel engine directly uses at normal temperatures: resistance is big when carrying in diesel fuel system, and supply of fuel under the same conditions reduces; Higher viscosity can influence fuel through the atomizing effect behind the nozzle, and the uneasy whole step that causes burning improves; More sedimentation of fuel will cause spray nozzle clogging seriously to be changed on nozzle; Unburnt fuel is sneaked into lubricating system of diesel oil engine, causes lubricant pollution, produces greasy filth.
There are some researches show that the heavy oil that comprises Jatropha curcas oil is after the process preheating, its viscosity can descend gradually.Test shows that when Jatropha curcas oil was heated to 150 ℃, the diesel oil under its viscosity and the normal temperature was suitable.Jatropha curcas oil after the reduction viscosity, its mobile raising can be used as the fuel of diesel engine.In addition, viscosity reduces and also can prevent from filter cleaner to cause owing to viscosity is too high excessive the or obstruction of filter cleaner resistance.
Many in the market employing burners etc. carry out preheating to fuel, and its shortcoming is: 1, the efficiency of heating surface is not high; 2, consume the extra energy.Only be applicable to the high latitude area engine cold-start, be not suitable for the heating of high viscosity fuel oils such as Jatropha curcas oil.
In addition, the exhaust of motor is generally 400 ℃～650 ℃ temperature, and is low more from exhaust valve temperature far away more.This part heat is often discharged with engine exhaust, and wastes neither energy-conservation also not environmental protection.
Therefore, in order to heat the little seeds of a tung oil tree, to reduce its viscosity, utilize the heat exchanger of engine exhaust to heat if can adopt, then can reduce the cost of heating fuel significantly, and, because heat exchanger can absorb the heat energy in the exhaust, so can reduce the temperature of exhaust, waste heat obtains utilizing.
To the objective of the invention is in order addressing the above problem, to provide a kind of engine exhaust that utilizes high viscositys such as Jatropha curcas oil to be used the device that carries out preheating.Viscosity is big in order to adopt, the high viscosity fuel oils such as Jatropha curcas oil of volatility difference act as a fuel, and in this device, adopts and utilizes the heat exchanger of exhaust combustion chamber heat energy to heat high viscosity fuel, and its viscosity is reduced, and improves liquidity, and improves the spraying situation of oil nozzle.
Summary of the invention
Technical problem to be solved by this invention is that employing utilizes the heat exchanger of engine exhaust to heat high viscosity fuel, reduces viscosity, improves its flowability, improves the motor spraying.Reduce the temperature of engine exhaust.
The technical solution used in the present invention is that the high-temperature exhaust air that utilizes motor is made heat exchanger as thermal source.The delivery temperature height of motor, and under the steady working condition of motor, have than stable flow rate.And utilize engine exhaust to make heat exchanger, can not produce significantly influence to power character, the Economy of motor.Therefore, adopt engine exhaust to feed heat exchanger, improve the temperature of the high viscosity fuel in the oil pipe, reduce its viscosity, improve its flowability, and the spraying situation of motor is improved, thereby improve the combustion performance and the emission performance of motor.
Concrete technological scheme of the present invention is, exhaust opening of engine connects the outlet pipe combustion gas, and outlet pipe is established arm, connects heat exchanger by the heat exchanger suction tude, and gas exhausting valve is located on the heat exchanger suction tude; The heat exchanger steam outlet pipe connects exhaust gas processing device; Fuel tank is by the filler opening of oil pipe connection heat exchanger, and the oil outlet of heat exchanger connects glow plug by oil pipe, and oil feeds motor after entering the Injection Pump pressurization again.Glow plug is connected respectively with controller with gas exhausting valve.
All beneficial effects of the present invention really are that plant oil viscosity height, poor flow quality are just restricting the use of vegetable oil on motor.Under the prerequisite of the oil supply system that does not change the former machine of motor, high viscosity fuel is carried out preheating, to reduce its viscosity, improve flowability and have great significance as motor fuel for vegetable oil.The present invention adopts engine exhaust to feed heat exchanger, and the high viscosity fuel in the oil pipe is heated, and reduces its viscosity, improves its flowability, and finally the operation to motor brings favorable influence.The little seeds of a tung oil tree suit in barren mountain region growth, and seed oil content height is a kind of good renewable energy sources.Absorbing carbon dioxide in its growing process, cost is low.Reinforcement can reduce pollution to environment to the utilization of Jatropha curcas oil, and also can reduce the dependence of petroleum resources and reduce the total discharge amount of carbon dioxide, be a kind of green energy resource of sustainable development, energy-conserving and environment-protective.
Description of drawings
Fig. 1 utilizes engine exhaust Jatropha curcas oil to be carried out the device schematic representation of preheating
Fig. 2 heat exchanger internal structure schematic representation
Fig. 3 glow plug schematic internal view.
Among the figure, 1 motor, 2 outlet pipes are managed after 3 exhausts, 4 heat exchanger suction tude, 5 heat exchanger steam outlet pipes, 6 oil pipes, 7 glow plugs, 8 temperature transducers, 9 Injection Pumps, 10 fuel tanks, 11 heat exchangers, 12 gas exhausting valves, 13 controllers, 14 volutes, 15 heat exchanger shell, 16 electric heating wire.
Embodiment
Motor intends adopting general diesel engine.The character and the diesel oil of Jatropha curcas oil are more approaching, can be under the prerequisite that does not change fuel system for diesel engine, only need before Jatropha curcas oil enters diesel injector, carry out preheating to a certain degree, can be on diesel engine directly with the Jatropha curcas oil operation that acts as a fuel.
The delivery temperature of motor 1 higher (being generally 400 ℃～650 ℃).In exhaust process, up along with engine piston, motor 1 beginning exhaust, exhaust has certain pressure.Do not needing with under the condition of blower fan, exhaust can enter heat exchanger very smoothly, has improved overall system efficiency.High-temperature exhaust air in the motor 1 is discharged along outlet pipe 2, after gas exhausting valve 12 adjustings, the exhaust of a part enters heat exchanger 11 along heat exchanger suction tude 4, and after the full-bodied Jatropha curcas oil in the heat exchanger 11 heated, along heat exchanger steam outlet pipe 5 rows to exhaust gas processing device.And full-bodied Jatropha curcas oil is stored in the fuel tank 10, enters in the heat exchanger 11 by oil pipe 6, and by after the heating in the heat exchanger 11, enters glow plug 7 along oil pipe 6 again, enter Injection Pump 9 pressurization again after, feed motor 1.
Pipe 3 is directly arranged remaining high-temperature exhaust air to exhaust gas processing device when air displacement is excessive after the exhaust, can play the effect of pressure in the balance outlet pipe like this.
Heat exchanger 11 is a shell and tube heat exchanger, and what flow in the pipe is high viscosity fuel.High-temperature exhaust air enters heat exchanger 11 along heat exchanger suction tude 4, and its entry position is at the middle part of heat exchanger, and the suction port position of heat exchanger steam outlet pipe 5 is higher, rises because High Temperature Gas is known from experience, and descends when temperature just reduces.Such layout can make the air-flow formation eddy current to a certain degree in the heat exchanger, increases heat exchange efficiency, makes the abundant heat exchange of high-temperature exhaust air.Oil pipe like this, improves the surface area of heat exchange as best one can in the spiral layout of heat exchanger 11 inner employings limited space.Fuel oil flows in volute 14, and volute can improve the surface area of heat exchange as best one can in limited space, and makes fuel oil prolong at the flowing time of heat exchanger 11, makes that full-bodied Jatropha curcas oil is fully heated.Heat exchanger shell 15 has good sealing property, and high temperature resistant.And, the volume of the volume of heat exchanger shell 15 in the outlet pipe, like this, whole heat exchanger shell has also played the effect that is similar to gas holder, and it is more abundant to make heat exchange carry out ground.On the other hand, the housing of big volume has also played noise elimination effect to a certain degree.
The caliber of heat exchanger steam outlet pipe 5 is greater than the caliber of heat exchanger suction tude 4, can make flowing of exhaust more smooth like this.Equally, the caliber of heat exchanger steam outlet pipe 5 also is greater than the caliber of outlet pipe 3, also is in order to reduce the flow resistance of exhaust in pipeline.
On the oil pipe between heat exchanger and the Injection Pump, set up a glow plug 7.Glow plug can be when motor 1 starts or the temperature of Jatropha curcas oil power can not satisfy usage requirement the time, with heated fuel oil.Electric heating wire 16 in the glow plug 7 is wrapped on the oil pipe 6, and when glow plug 7 energisings, electric heating wire 16 will heat the Jatropha curcas oil of 6 li in oil pipe, plays the effect of assistant heating.
A temperature transducer 8 is installed between glow plug 7 and Injection Pump 9, and the Jatropha curcas oil that temperature transducer 8 connects 6 li in 13 pairs of oil pipes of controller carries out thermometric.When oily temperature was lower than setting temperature, temperature signal imported controller 13 into, and controller 13 sends instruction gas exhausting valve 12 apertures and increases, and the high-temperature gas that enters heat exchanger 11 increases; When oily temperature was higher than setting temperature, gas exhausting valve 12 apertures turned down, and the gas flow that enters heat exchanger 11 reduces, unnecessary exhaust by exhaust after pipe 3 discharge.Whole Preheating unit is carried out " closed loop " control.
, by heat exchanger steam outlet pipe 5 chilled exhaust is discharged again by behind the heat exchanger 11 in exhaust, also can reach the purpose that reduces delivery temperature.
Claims (5)
1. the pre-heating system of the combusting high glutinous degree fuel oil of diesel engine, it is characterized in that, comprise heat exchanger (11), temperature transducer (8), gas exhausting valve (12), controller (13), the relief opening of motor (1) connects outlet pipe (2) combustion gas, outlet pipe (2) is established arm, connect heat exchanger (11) by heat exchanger suction tude (4), gas exhausting valve (12) is located on the heat exchanger suction tude (4); Heat exchanger steam outlet pipe (5) connects exhaust gas processing device; Fuel tank (10) is by the filler opening of oil pipe (6) connection heat exchanger (11), and the oil outlet of heat exchanger (11) connects Injection Pump (9) by oil pipe (6), feeds motor (1); Described gas exhausting valve (12) is connected with controller (13).
2. the pre-heating system of the combusting high glutinous degree fuel oil of diesel engine according to claim 1, it is characterized in that, described heat exchanger (11) is a shell and tube heat exchanger, high-temperature exhaust air enters heat exchanger (11) along heat exchanger suction tude (4), heat exchanger suction port position is at the middle part of heat exchanger, the heat exchanger gas port position of giving vent to anger is arranged on the top of heat exchanger (11) housing, and the oil pipe in the heat exchanger (11) is volute (14).
3. the pre-heating system of the combusting high glutinous degree fuel oil of diesel engine according to claim 1, it is characterized in that, also comprise glow plug (7), described glow plug (7) is arranged on the oil pipe between heat exchanger (11) and the Injection Pump (9), and glow plug (7) is connected with controller (13).
4. the pre-heating system of the combusting high glutinous degree fuel oil of diesel engine according to claim 3, it is characterized in that, on the oil pipe between described glow plug (7) and the Injection Pump (9) temperature transducer (8) is set, described temperature transducer (8) connects controller (13).
5. according to the pre-heating system of claim 1,2, the combusting high glutinous degree fuel oil of 3 or 4 described diesel engines, it is characterized in that, the caliber of described heat exchanger steam outlet pipe (5) is greater than the caliber of heat exchanger suction tude (4), and the caliber of heat exchanger steam outlet pipe (5) also is greater than the caliber of outlet pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011100952345A CN102155339B (en) | 2011-04-15 | 2011-04-15 | High-viscosity fuel preheating system for diesel engine |
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| CN2011100952345A CN102155339B (en) | 2011-04-15 | 2011-04-15 | High-viscosity fuel preheating system for diesel engine |
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| CN102155339A true CN102155339A (en) | 2011-08-17 |
| CN102155339B CN102155339B (en) | 2012-11-07 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421021A (en) * | 2013-08-27 | 2015-03-18 | 福特环球技术公司 | Systems and methods for engine control based on engine oil viscosity |
| CN104564478A (en) * | 2014-12-25 | 2015-04-29 | 潍柴动力股份有限公司 | Engine and cold starting system and cold starting method thereof |
| CN105697188A (en) * | 2016-01-20 | 2016-06-22 | 孙冠军 | Energy-saving diesel oil heater |
| CN105697117A (en) * | 2016-01-27 | 2016-06-22 | 重庆长安汽车股份有限公司 | Double-exhaust-pipeline system for automobile |
| CN106246420A (en) * | 2016-08-12 | 2016-12-21 | 东南大学 | The oil storage system attemperating unit of polar region scientific investigation station generating set |
| CN106837621A (en) * | 2017-04-01 | 2017-06-13 | 江苏建筑职业技术学院 | Engineering machinery vehicle gas extraction system heat utilization device and its control system |
| CN109184973A (en) * | 2018-09-04 | 2019-01-11 | 潍柴动力股份有限公司 | Fuel oil supply system and fuel delivery method for engine |
| CN109519262A (en) * | 2019-01-14 | 2019-03-26 | 温州大学瓯江学院 | It is a kind of for improving the heat regenerative system and heat regenerating method of Motorcycle Performance and discharge |
| CN110529304A (en) * | 2019-09-22 | 2019-12-03 | 安徽安凯汽车股份有限公司 | A kind of intelligent fuel heating system |
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| CN200952444Y (en) * | 2006-04-18 | 2007-09-26 | 马宗元 | Thermoelectric preheating device for diesel locomotive |
| CN201125809Y (en) * | 2007-12-11 | 2008-10-01 | 海吾尔江·克日木 | Automobile fuel preheating device |
| CN201972816U (en) * | 2011-04-15 | 2011-09-14 | 江苏大学 | Preheating system of high-viscosity fuel oil for fueling diesel engine |
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2011
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Patent Citations (4)
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| CN2157317Y (en) * | 1993-03-20 | 1994-02-23 | 胜利石油管理局钻井总公司钻井五公司 | Shutdown preheating device for diesel engine |
| CN200952444Y (en) * | 2006-04-18 | 2007-09-26 | 马宗元 | Thermoelectric preheating device for diesel locomotive |
| CN201125809Y (en) * | 2007-12-11 | 2008-10-01 | 海吾尔江·克日木 | Automobile fuel preheating device |
| CN201972816U (en) * | 2011-04-15 | 2011-09-14 | 江苏大学 | Preheating system of high-viscosity fuel oil for fueling diesel engine |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421021A (en) * | 2013-08-27 | 2015-03-18 | 福特环球技术公司 | Systems and methods for engine control based on engine oil viscosity |
| CN104421021B (en) * | 2013-08-27 | 2019-03-22 | 福特环球技术公司 | The system and method for being used for engine control based on engine motor oil viscosity |
| CN104564478A (en) * | 2014-12-25 | 2015-04-29 | 潍柴动力股份有限公司 | Engine and cold starting system and cold starting method thereof |
| CN105697188A (en) * | 2016-01-20 | 2016-06-22 | 孙冠军 | Energy-saving diesel oil heater |
| CN105697117A (en) * | 2016-01-27 | 2016-06-22 | 重庆长安汽车股份有限公司 | Double-exhaust-pipeline system for automobile |
| CN106246420B (en) * | 2016-08-12 | 2018-11-20 | 东南大学 | The oil storage system temperature control device of polar region scientific investigation station generating set |
| CN106246420A (en) * | 2016-08-12 | 2016-12-21 | 东南大学 | The oil storage system attemperating unit of polar region scientific investigation station generating set |
| CN106837621A (en) * | 2017-04-01 | 2017-06-13 | 江苏建筑职业技术学院 | Engineering machinery vehicle gas extraction system heat utilization device and its control system |
| CN109184973A (en) * | 2018-09-04 | 2019-01-11 | 潍柴动力股份有限公司 | Fuel oil supply system and fuel delivery method for engine |
| CN109519262A (en) * | 2019-01-14 | 2019-03-26 | 温州大学瓯江学院 | It is a kind of for improving the heat regenerative system and heat regenerating method of Motorcycle Performance and discharge |
| CN109519262B (en) * | 2019-01-14 | 2024-03-01 | 温州理工学院 | Regenerative system and regenerative method for improving motorcycle performance and emission |
| CN110529304A (en) * | 2019-09-22 | 2019-12-03 | 安徽安凯汽车股份有限公司 | A kind of intelligent fuel heating system |
| CN110529304B (en) * | 2019-09-22 | 2021-06-08 | 安徽安凯汽车股份有限公司 | Intelligent fuel oil heating system |
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| CN102155339B (en) | 2012-11-07 |
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Application publication date: 20110817 Assignee: Jiangsu Jinhu Fuel Feed Pump Co., Ltd. Assignor: Jiangsu University Contract record no.: 2014320000178 Denomination of invention: High-viscosity fuel preheating system for diesel engine Granted publication date: 20121107 License type: Exclusive License Record date: 20140307 |
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Granted publication date: 20121107 Termination date: 20190415 |