CN104533670A - Heating unit and heating method for two-stroke piston engine crankcase - Google Patents

Heating unit and heating method for two-stroke piston engine crankcase Download PDF

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Publication number
CN104533670A
CN104533670A CN201410779787.6A CN201410779787A CN104533670A CN 104533670 A CN104533670 A CN 104533670A CN 201410779787 A CN201410779787 A CN 201410779787A CN 104533670 A CN104533670 A CN 104533670A
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CN
China
Prior art keywords
heating
heat exchange
engine
exchange cavity
fuel
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.)
Pending
Application number
CN201410779787.6A
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Chinese (zh)
Inventor
何小明
张晨
陈伟
陈毅华
毛建国
高香才
梁荀
王世峰
魏特特
张伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing University of Aeronautics and Astronautics
Original Assignee
Nanjing University of Aeronautics and Astronautics
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing University of Aeronautics and Astronautics filed Critical Nanjing University of Aeronautics and Astronautics
Priority to CN201410779787.6A priority Critical patent/CN104533670A/en
Publication of CN104533670A publication Critical patent/CN104533670A/en
Pending legal-status Critical Current

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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
    • 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

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  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The invention discloses a heating unit and a heating method for a two-stroke piston engine crankcase, and belongs to the technical field of energy. The heating unit is characterized by comprising an exhaust manifold (11), a heat exchange cavity (6) of a heating box, an electric heating pipe (5) and a fuel heating pipe (7), wherein the heat exchange cavity (6) of the heating box is adhered to the wall of the engine crankcase and is connected with an exhaust port of the engine through the exhaust manifold (11); the electric heating pipe (5) is embedded in the heat exchange cavity (6) of the heating box and is connected with an external power supply (10) through a power wire; the fuel heating pipe (7) is embedded in the heat exchange cavity (6) of the heating box, and an inlet of the fuel oil heating pipe is connected with an outlet of an oil pump, and the outlet of the fuel oil heating pipe is connected with either a carburetor or an oil nozzle inlet. According to the heating unit provided by the invention, the engine crankcase can be preheated in a low temperature environment, and the temperature of the crankcase can be kept when the engine works.

Description

Two-stroke piston engine crankcase heating equipment and heating means
Technical field
The present invention relates to a kind of crankcase heating equipment and the heating means of improving two-stroke piston engine mixed gas formation quality, belong to energy technology field.
Background technique
The two-stroke piston engine mixed gas generation type that mixed gas outside is formed is: form degree of vacuum in crankcase during piston stroking upward, sucks in crankcase, form fuel-air mixture by fuel oil and fresh air.Now tiny in crankcase fuel particles easily condenses into droplet and is even attached on crankcase wall, and this will directly affect the quality entering cylinder interior mixed gas, thus reduces the performance of motor.This phenomenon is even more serious at low ambient temperatures or when using the astatki of atomization difference.Suitable raising crankcase temperature will be conducive to improving combustion oil atomization, improve the quality entering the mixed gas of cylinder interior, improve the performance of motor.
Therefore, one is needed at low ambient temperatures by engine crankcase preheating, and can to keep the two-stroke piston engine crankcase heating equipment of crankcase temperature when engine operation.
Summary of the invention
The object of the invention is design and develop one at low ambient temperatures by engine crankcase preheating, and can to keep two-stroke piston engine crankcase heating equipment and the heating means of crankcase temperature when engine operation.
A kind of two-stroke piston engine crankcase heating equipment, utilizes crankcase and the fuel oil of the heat heated engine of engine exhaust; It is characterized in that comprising gas exhaust manifold, heating box heat exchange cavity, electric heating tube, fuel Heating pipe; Wherein heating box heat exchange cavity and engine crankcase wall are fitted, and are connected with engine exhaust port by gas exhaust manifold; Electric heating tube is embedded in heating box heat exchange inside cavity, is connected with external power supply by power lead; Fuel Heating pipe is embedded in heating box heat exchange inside cavity, and fuel Heating tube inlet is connected with fuel pump outlet, and the outlet of fuel Heating pipe is connected with Carburetor or oil nozzle entrance.
The heating means of described two-stroke piston engine crankcase heating equipment, it is characterized in that: during engine cold-start, external power supply is utilized to power to the electric heating tube of heating box heat exchange inside cavity, heating box heat exchange cavity is heated, by the heat transfer between heating box heat exchange cavity and engine crankcase wall by engine warming up; In engine operation process, the High Temperature High Pressure tail gas that motor is discharged enters heating box heat exchange cavity by gas exhaust manifold, and carries out with it convection heat exchange and be heated; Increased the quality of crankcase temperature and improving engine mixed gas by convection heat exchange by the heating box heat exchange cavity of tail gas heating;
The invention has the beneficial effects as follows:
(1) the present invention can significantly improve engine cold-start performance, makes motor working stability at low ambient temperatures, improves motor to the adaptability of low temperature environment;
(2) engine for combusting astatki can be made after the present invention is applied to motor;
(3) the present invention can carry out modification in construction for Multiple Type two stroke engine, and applicability is extensive.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the present invention will be further described.
The overall schematic diagram of Fig. 1;
In figure: 1. spark plug, 2. engine air inlet tube, 3. oil nozzle, 4. fuel tank, 5. electric heating tube, 6. heating box heat exchange cavity, 7. fuel Heating pipe, 8. fuel pump, 9. external power supply, 10. crankcase body, 11. engine exhaust pipe.
Embodiment
In FIG, to be powered to the electric heating tube 5 being inlaid in heating box heat exchange cavity 6 inside by external power supply 9 and heating box heat exchange cavity 6 heated, by engine crankshaft box 10 preheating, the mixed gas entering motor is heated, improve its atomization quality, thus ensure that motor can start smoothly.The High Temperature High Pressure tail gas of discharging in engine operation process enters heating box heat exchange cavity 6 by engine exhaust pipe 11 and is heated.By the heating box heat exchange cavity 6 heated, crankcase body 10 is heated, thus improve the quality entering the mixed gas of motor, improve the performance of motor.Suitable increase fuel oil temperature can improve the atomization of fuel oil, therefore fuel Heating can be reduced the viscosity of fuel oil before entering oil nozzle 3 at fuel oil, improves the atomization quality of fuel oil.Consider heat source, it is inner that fuel Heating pipe 7 is integrated in heating box cavity 6 by the present invention.Fuel oil flowed through fuel Heating pipeline and is heated before entering oil nozzle 3.

Claims (2)

1. a two-stroke piston engine crankcase heating equipment, utilizes crankcase and the fuel oil of the heat heated engine of engine exhaust; It is characterized in that comprising gas exhaust manifold (11), heating box heat exchange cavity (6), electric heating tube (5), fuel Heating pipe (7); Wherein heating box heat exchange cavity (6) and engine crankcase wall are fitted, and are connected with engine exhaust port by gas exhaust manifold (11); It is inner that electric heating tube (5) is embedded in heating box heat exchange cavity (6), is connected with external power supply (10) by power lead; It is inner that fuel Heating pipe (7) is embedded in heating box heat exchange cavity (6), and fuel Heating tube inlet is connected with fuel pump outlet, and the outlet of fuel Heating pipe is connected with Carburetor or oil nozzle entrance.
2. the heating means of two-stroke piston engine crankcase heating equipment according to claim 1, is characterized in that:
During engine cold-start, external power supply (10) is utilized to power to the electric heating tube (5) that heating box heat exchange cavity (6) is inner, heating box heat exchange cavity (6) is heated, by the heat transfer between heating box heat exchange cavity (6) and engine crankcase wall by engine warming up;
In engine operation process, the High Temperature High Pressure tail gas that motor is discharged enters heating box heat exchange cavity (6) by gas exhaust manifold (11), and carries out with it convection heat exchange and be heated; Increased the quality of crankcase temperature and improving engine mixed gas by convection heat exchange by the heating box heat exchange cavity (6) of tail gas heating;
Fuel oil can be heated when flowing through heating box cavity, thus fuel oil viscosity reduces the better atomization of acquisition.
CN201410779787.6A 2014-12-17 2014-12-17 Heating unit and heating method for two-stroke piston engine crankcase Pending CN104533670A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410779787.6A CN104533670A (en) 2014-12-17 2014-12-17 Heating unit and heating method for two-stroke piston engine crankcase

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410779787.6A CN104533670A (en) 2014-12-17 2014-12-17 Heating unit and heating method for two-stroke piston engine crankcase

Publications (1)

Publication Number Publication Date
CN104533670A true CN104533670A (en) 2015-04-22

Family

ID=52849262

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410779787.6A Pending CN104533670A (en) 2014-12-17 2014-12-17 Heating unit and heating method for two-stroke piston engine crankcase

Country Status (1)

Country Link
CN (1) CN104533670A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107218126A (en) * 2017-08-10 2017-09-29 晏长友 Homogeneity compression-ignition formula internal combustion engine and its control system and control method
CN111664038A (en) * 2020-06-24 2020-09-15 北京高鑫伟业科技有限公司 Engine air inlet and crankcase preheating combined system and preheating method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4876999A (en) * 1987-10-22 1989-10-31 Andreas Stihl Two-stroke engine
CN2154351Y (en) * 1993-04-03 1994-01-26 葛炳臣 Lubricating oil preheater for internal-combustion engine base case
US20040173165A1 (en) * 2003-02-14 2004-09-09 Udo Sieber Methods for controlling direct start of an internal combustion engine
CN102269086A (en) * 2011-07-01 2011-12-07 南京航空航天大学 Heavy oil engine cold-starting preheating device and method
CN102454514A (en) * 2010-10-29 2012-05-16 王国强 Zero-energy fuel oil energy saver of car engine
CN102644527A (en) * 2012-05-09 2012-08-22 施爱龙 Gas fuel engine
KR20120111654A (en) * 2011-04-01 2012-10-10 자동차부품연구원 Apparatus of engine oil warmup using exhaust thermal energy

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4876999A (en) * 1987-10-22 1989-10-31 Andreas Stihl Two-stroke engine
CN2154351Y (en) * 1993-04-03 1994-01-26 葛炳臣 Lubricating oil preheater for internal-combustion engine base case
US20040173165A1 (en) * 2003-02-14 2004-09-09 Udo Sieber Methods for controlling direct start of an internal combustion engine
CN102454514A (en) * 2010-10-29 2012-05-16 王国强 Zero-energy fuel oil energy saver of car engine
KR20120111654A (en) * 2011-04-01 2012-10-10 자동차부품연구원 Apparatus of engine oil warmup using exhaust thermal energy
CN102269086A (en) * 2011-07-01 2011-12-07 南京航空航天大学 Heavy oil engine cold-starting preheating device and method
CN102644527A (en) * 2012-05-09 2012-08-22 施爱龙 Gas fuel engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107218126A (en) * 2017-08-10 2017-09-29 晏长友 Homogeneity compression-ignition formula internal combustion engine and its control system and control method
CN107218126B (en) * 2017-08-10 2020-04-07 晏长友 Homogeneous charge compression ignition internal combustion engine and control system and control method thereof
CN111664038A (en) * 2020-06-24 2020-09-15 北京高鑫伟业科技有限公司 Engine air inlet and crankcase preheating combined system and preheating method thereof
CN111664038B (en) * 2020-06-24 2024-03-15 北京高鑫伟业科技有限公司 Engine air inlet and crankcase preheating combined system and preheating method thereof

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Application publication date: 20150422