CN102032036B - Double-lip combustion chamber for heavy diesel engine - Google Patents

Double-lip combustion chamber for heavy diesel engine Download PDF

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Publication number
CN102032036B
CN102032036B CN2010105829889A CN201010582988A CN102032036B CN 102032036 B CN102032036 B CN 102032036B CN 2010105829889 A CN2010105829889 A CN 2010105829889A CN 201010582988 A CN201010582988 A CN 201010582988A CN 102032036 B CN102032036 B CN 102032036B
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CN
China
Prior art keywords
combustion chamber
lip
diameter
firing chamber
diesel engine
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Expired - Fee Related
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CN2010105829889A
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Chinese (zh)
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CN102032036A (en
Inventor
李骏
胡芳
王鹏程
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FAW Group Corp
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FAW Group Corp
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Publication date
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Priority to CN2010105829889A priority Critical patent/CN102032036B/en
Publication of CN102032036A publication Critical patent/CN102032036A/en
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Publication of CN102032036B publication Critical patent/CN102032036B/en
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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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  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

The invention relates to a double-lip combustion chamber for a heavy diesel engine, and belongs to combustion chambers of heavy diesel engines. The diameter of the combustion chamber is 76.3mm, the bottom of the combustion chamber is provided with a boss, the height of the boss is 6mm, the depth of the combustion chamber is 19.5mm, the arc radius of a concave pit of the combustion chamber is 9.5mm, the diameter of an upper lip of the combustion chamber is 83.9mm which is more than that of the combustion chamber, and the diameter of a lower lip of the combustion chamber is 75.5mm which is less than that of the combustion chamber. The combustion chamber has the advantage of slightly changing particles produced in the combustion chamber along with retarded oil injection, so the particles are below 0.10g/kW.h of national III emission standard specified by rule GB17691-2005 by matching a burning system with the heavy diesel engine.

Description

Double-lip combustion chamber for heavy diesel engine
Technical field
The invention belongs to a kind of firing chamber of large diesel engine.
Background technique
The normal firing chamber of adopting of large diesel engine is the closed-entry firing chamber, when cooperating different injection systems, adopt different injection advance angles, the particulate that the firing chamber internal combustion produces changes greatly, discharging is arrived between the state III between state II level, namely discharge particulate between 0.10g/kW.h ~ 0.36g/kW.h, change larger.
Summary of the invention
The invention provides a kind of Double-lip combustion chamber for heavy diesel engine, change greatly with the particulate that solves the internal combustion generation of closed-entry firing chamber, discharge unsettled problem.
The technological scheme that the present invention takes is: the firing chamber diameter is 76.3mm, the bottom, firing chamber is provided with boss, boss height is 6mm, combustion-chamber depth is 19.5mm, the combustion recess radius of arc is 9.5mm, and the upper lip diameter of firing chamber is 83.9mm greater than the firing chamber diameter, lower lip diameter is 75.5mm less than the firing chamber diameter.
Good effect of the present invention is to make the particulate that produces in the firing chamber small with the retarded injection variation, makes large diesel engine be lower than state III emission standard 0.10 g/kW.h of rules GB17691-2005 regulation by the cooperation realization particulate of combustion system.
Description of drawings:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the three-dimensional CFD result of calculation of combustion characteristic of the present invention figure.
Embodiment:
Firing chamber diameter D3 is 76.3mm, the bottom, firing chamber is provided with boss, boss height H1 is 6mm, combustion-chamber depth H2 is 19.5mm, combustion recess radius of arc R1 is 9.5mm, and the upper lip diameter D1 of firing chamber is 83.9mm greater than the firing chamber diameter, lower lip diameter D2 is 75.5mm less than the firing chamber diameter.Firing chamber double-lip design is divided into up and down two-part with the bags, when fuel oil sprays in the firing chamber, the fuel oil that spray into early stage and the contact with air of bottom, firing chamber and burning, the fuel oil that later stage sprays into is on top, firing chamber, mix with the air on top, so the fuel oil of different times can both fully contact with air.This feature is different from original closed-entry firing chamber, and the closed-entry firing chamber only has a space that mixing of fuel oil and air is provided, and the fuel oil that different oil spouts spray into constantly can not be fully and contact with air, therefore produces a large amount of particulates.
Because different oil spouts spray into the fuel oil of double-lip mouth combustion chamber constantly can both be well and contact with air, therefore, this firing chamber is when oil spout is postponed, and particulate does not significantly increase.
The combustion characteristic of double-lip mouth combustion chamber is verified in three-dimensional CFD and engine rig test.
Three-dimensional CFD result of calculation as shown in Figure 2, fuel-steam and air mix in the whole bags, this is the main means that reduce the particulate generation.

Claims (1)

1. Double-lip combustion chamber for heavy diesel engine, it is characterized in that: the firing chamber diameter is 76.3mm, neutral position, bottom, firing chamber is provided with boss, the distance of boss top and firing chamber upper surface is 6mm, and combustion-chamber depth is 19.5mm, and the combustion recess radius of arc is 9.5mm, the upper lip diameter of firing chamber is greater than the firing chamber diameter, be 83.9mm, lower lip diameter is 75.5mm less than the firing chamber diameter.
CN2010105829889A 2010-12-10 2010-12-10 Double-lip combustion chamber for heavy diesel engine Expired - Fee Related CN102032036B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010105829889A CN102032036B (en) 2010-12-10 2010-12-10 Double-lip combustion chamber for heavy diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010105829889A CN102032036B (en) 2010-12-10 2010-12-10 Double-lip combustion chamber for heavy diesel engine

Publications (2)

Publication Number Publication Date
CN102032036A CN102032036A (en) 2011-04-27
CN102032036B true CN102032036B (en) 2013-03-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010105829889A Expired - Fee Related CN102032036B (en) 2010-12-10 2010-12-10 Double-lip combustion chamber for heavy diesel engine

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CN (1) CN102032036B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104481429A (en) * 2014-10-31 2015-04-01 沈阳航天新乐有限责任公司 Conveying device of oil field oil tube stem and conveying method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102661193B (en) * 2012-05-16 2013-09-04 大连理工大学 Double-layer split-flow burning system of direct-injection diesel engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1035161A (en) * 1988-02-08 1989-08-30 大连工学院 Be loaded on the guide ring in the direct-spraying type diesel engine firing chamber
DE19707873A1 (en) * 1997-02-27 1998-09-10 Hatz Motoren Injector and combustion method for an internal combustion engine
CN2449061Y (en) * 2000-09-19 2001-09-19 山东大学 Combustion chamber
US7073478B2 (en) * 2002-12-20 2006-07-11 Daimlerchrysler Ag Internal combustion engine with auto-ignition
CN201874667U (en) * 2010-12-10 2011-06-22 中国第一汽车集团公司 Double-lip mouth combustion chamber for heavy-duty diesel engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002276373A (en) * 2001-03-22 2002-09-25 Isuzu Motors Ltd Direct injection type internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1035161A (en) * 1988-02-08 1989-08-30 大连工学院 Be loaded on the guide ring in the direct-spraying type diesel engine firing chamber
DE19707873A1 (en) * 1997-02-27 1998-09-10 Hatz Motoren Injector and combustion method for an internal combustion engine
CN2449061Y (en) * 2000-09-19 2001-09-19 山东大学 Combustion chamber
US7073478B2 (en) * 2002-12-20 2006-07-11 Daimlerchrysler Ag Internal combustion engine with auto-ignition
CN201874667U (en) * 2010-12-10 2011-06-22 中国第一汽车集团公司 Double-lip mouth combustion chamber for heavy-duty diesel engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开2002-276373A 2002.09.25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104481429A (en) * 2014-10-31 2015-04-01 沈阳航天新乐有限责任公司 Conveying device of oil field oil tube stem and conveying method thereof

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CN102032036A (en) 2011-04-27

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Inventor after: Li Jun

Inventor after: Hu Fang

Inventor after: Wang Pengcheng

Inventor before: Hu Fang

Inventor before: Wang Pengcheng

Inventor before: Li Jun

COR Change of bibliographic data

Free format text: CORRECT: INVENTOR; FROM: HU FANG WANG PENGCHENG LI JUN TO: LI JUN HU FANG WANG PENGCHENG

C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130327

Termination date: 20191210