CN114109673A - High tumble inlet structure - Google Patents

High tumble inlet structure Download PDF

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Publication number
CN114109673A
CN114109673A CN202111416105.1A CN202111416105A CN114109673A CN 114109673 A CN114109673 A CN 114109673A CN 202111416105 A CN202111416105 A CN 202111416105A CN 114109673 A CN114109673 A CN 114109673A
Authority
CN
China
Prior art keywords
air inlet
section
inlet
molded surface
tumble
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
CN202111416105.1A
Other languages
Chinese (zh)
Inventor
于广达
关雯雯
胡祥宇
朱继艳
张莹
赵兴天
王德春
张晓龙
金研
张俊宇
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.)
Harbin Dongan Auto Engine Co Ltd
Original Assignee
Harbin Dongan Auto Engine Co Ltd
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 Harbin Dongan Auto Engine Co Ltd filed Critical Harbin Dongan Auto Engine Co Ltd
Priority to CN202111416105.1A priority Critical patent/CN114109673A/en
Publication of CN114109673A publication Critical patent/CN114109673A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/02—Other fluid-dynamic features of induction systems for improving quantity of charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10078—Connections of intake systems to the engine
    • F02M35/10085—Connections of intake systems to the engine having a connecting piece, e.g. a flange, between the engine and the air intake being foreseen with a throttle valve, fuel injector, mixture ducts or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10262—Flow guides, obstructions, deflectors or the like
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

A high tumble inlet structure belongs to the technical field of engines. The air inlet comprises two air inlet pipes, each air inlet pipe comprises an upper molded surface and a lower molded surface which are enclosed into a cylindrical structure, each upper molded surface comprises an upper inlet section, an upper smooth section and an upper throat section, each lower molded surface comprises a lower inlet section, a lower middle section and a lower throat section, and an oil sprayer avoiding pit is arranged between each upper smooth section and each lower middle section of each air inlet pipe; the upper throat section is communicated with the valve guide pipe; the upper throat opening section and the lower throat opening section are communicated with the air inlet valve seat. The invention ensures that air inlet is smoother and the air inlet flow is increased; the intake air flow can be guided to the exhaust side, and the in-cylinder tumble flow is increased; sufficient air inflow is ensured; the invention is suitable for the cylinder cover of the gasoline engine with high compression ratio, improves the intake tumble ratio, optimizes combustion and inhibits detonation in the cylinder.

Description

High tumble inlet structure
Technical Field
The invention relates to a high-tumble air inlet structure, and belongs to the technical field of engines.
Background
The demand of people on the dynamic property and the fuel economy of the engine is continuously increased, the engine technology is continuously developed, and a high-compression-ratio and high-charge combustion system becomes the mainstream direction of the development of the gasoline engine. And with the increase of the compression ratio and the air input, the temperature in the cylinder at the end of the compression stroke is greatly increased, so that the engine has a more obvious deflagration tendency, which is greatly disadvantageous to the power output of the engine and the improvement of the fuel economy. Research and test prove that the optimization of combustion by increasing the intake tumble ratio and the turbulence kinetic energy in the cylinder is an effective measure for solving the problem of in-cylinder explosion.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a high-tumble air inlet structure.
The invention adopts the following technical scheme: a high-tumble inlet structure comprises a valve guide pipe, an inlet valve seat, an oil sprayer avoiding pit and an inlet; the air inlet end of the air inlet channel is provided with an oil sprayer avoiding pit, the lower end of the upper wall of the air inlet channel is communicated with the valve guide pipe, and the air outlet end of the air inlet channel is communicated with the air inlet valve seat.
Compared with the prior art, the invention has the beneficial effects that:
the air inlet end of the air inlet channel adopts a higher height, so that air inlet is smoother, and the air inlet flow is increased; the lower middle section is of a fish belly structure, and can guide intake airflow to the exhaust side to increase the tumble flow in the tank; the tangential included angle between the lower throat section and the central line of the corresponding valve guide pipe is 57 degrees, and the intake tumble ratio is improved; the port area of the air inlet end of the air inlet channel is the same as the minimum area of the throats of the two air inlet valve seats, so that the sufficient air inlet flow is ensured; the invention is suitable for the cylinder cover of the gasoline engine with high compression ratio, improves the intake tumble ratio, optimizes combustion and inhibits detonation in the cylinder.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of FIG. 1;
fig. 3 is a bottom view of fig. 1.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
A high tumble inlet structure comprises a valve guide pipe 3, an inlet valve seat 4, a fuel injector avoiding pit 5 and an inlet; the inlet end of intake duct is equipped with the sprayer and dodges hole 5, and the lower extreme and the 3 intercommunication settings of valve guide of intake duct upper wall, the end of giving vent to anger of intake duct and the setting of 4 intercommunications of admission valve seat.
The air inlet channel comprises two air inlet pipes, each air inlet pipe comprises an upper molded surface 1 and a lower molded surface 2, the upper molded surface 1 and the lower molded surfaces 2 are enclosed into a cylindrical structure, the upper molded surface 1 comprises an upper inlet section 11, an upper smooth section 12 and an upper throat section 13 which are integrally formed from top to bottom, the lower molded surface 2 comprises a lower inlet section 21, a lower middle section 22 and a lower throat section 23 which are integrally formed from top to bottom, the upper inlet section 11 is correspondingly connected with the lower inlet section 21, the upper smooth section 12 is correspondingly connected with the lower middle section 22, and an injector avoiding pit 5 is arranged between the lower inlet section 21 and the lower middle section 22 of the two air inlet pipes; the upper throat section 13 is correspondingly connected with the lower throat section 23; the upper throat section 13 is communicated with the corresponding valve guide pipe 3; the upper throat section 13 and the lower throat section 23 form a throat of the air inlet channel, and are respectively communicated with the corresponding air inlet valve seat 4.
Go up inlet segment 11 and be the upwarp structure, lower inlet segment 21 is the upwarp structure down, and inlet end central point d is 66.3mm to the high design of combustion chamber bottom surface a, and is 100.7mm to the design of combustion chamber center b distance, adopts higher inlet end height, makes and admits air more smoothly, increases air intake flow.
The lower middle section 22 is of a fish belly structure, the lower middle section 22 is smoothly connected with the lower throat section 23, and intake airflow can be guided to the exhaust side to increase tumble in the cylinder.
The tangential included angle between the lower throat section 23 and the central line of the corresponding valve guide pipe 3 is alpha, and the alpha is 57 degrees, so that the intake air tumble ratio is improved.
The port area of the inlet end of the inlet duct is the same as the minimum area of the throats of the two inlet valve seats 4 (dv shown in fig. 2 is the minimum diameter of the throats), so that sufficient inlet flow is ensured.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. The utility model provides a high tumble inlet structure which characterized in that: the device comprises a valve guide pipe (3), an air inlet valve seat (4), an oil sprayer avoiding pit (5) and an air inlet channel; the air inlet end of the air inlet channel is provided with an oil sprayer avoiding pit (5), the lower end of the upper wall of the air inlet channel is communicated with the valve guide pipe (3), and the air outlet end of the air inlet channel is communicated with the air inlet valve seat (4).
2. The high-tumble air inlet passage structure according to claim 1, characterized in that: the air inlet channel comprises two air inlet pipes, each air inlet pipe comprises an upper molded surface (1) and a lower molded surface (2), the upper molded surface (1) and the lower molded surface (2) are enclosed into a cylindrical structure, the upper molded surface (1) comprises an upper inlet section (11), an upper smooth section (12) and an upper throat section (13) which are integrally formed from top to bottom, the lower molded surface (2) comprises a lower inlet section (21), a lower middle section (22) and a lower throat section (23) which are integrally formed from top to bottom, the upper inlet section (11) is correspondingly connected with the lower inlet section (21), the upper smooth section (12) is correspondingly connected with the lower middle section (22), and a fuel injector avoiding pit (5) is arranged between the lower inlet section (21) and the lower middle section (22) of the two air inlet pipes; the upper throat section (13) is correspondingly connected with the lower throat section (23); the upper throat section (13) is communicated with the corresponding valve guide pipe (3); the upper throat section (13) and the lower throat section (23) are respectively communicated with the corresponding air inlet valve seats (4).
3. The high-tumble air inlet passage structure according to claim 2, characterized in that: the upper inlet section (11) is of an upturned structure, and the lower inlet section (21) is of a down-tilted structure.
4. A high tumble inlet duct structure according to claim 2 or 3, characterized in that: the lower middle section (22) is of a fish belly structure.
5. The high-tumble air inlet passage structure according to claim 4, characterized in that: the tangential included angle between the lower throat section (23) and the central line of the corresponding valve guide pipe (3) is alpha, and the alpha is 57 degrees.
6. The high-tumble air inlet passage structure according to claim 1 or 5, characterized in that: the port area of the air inlet end of the air inlet channel is equal to the minimum area of the throats of the two air inlet valve seats (4).
CN202111416105.1A 2021-11-25 2021-11-25 High tumble inlet structure Pending CN114109673A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111416105.1A CN114109673A (en) 2021-11-25 2021-11-25 High tumble inlet structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111416105.1A CN114109673A (en) 2021-11-25 2021-11-25 High tumble inlet structure

Publications (1)

Publication Number Publication Date
CN114109673A true CN114109673A (en) 2022-03-01

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CN202111416105.1A Pending CN114109673A (en) 2021-11-25 2021-11-25 High tumble inlet structure

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115199398A (en) * 2022-07-25 2022-10-18 东风汽车集团股份有限公司 Engine for igniting and compression ignition

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004124835A (en) * 2002-10-03 2004-04-22 Nissan Motor Co Ltd Intake device of internal combustion engine
CN101666277A (en) * 2009-09-24 2010-03-10 重庆长安汽车股份有限公司 Petrol engine air inlet passage with high-tumble intensity and high-flow coefficient
CN101907032A (en) * 2010-07-30 2010-12-08 奇瑞汽车股份有限公司 Combustion system of engine
CN207437238U (en) * 2017-11-10 2018-06-01 重庆凯特动力科技有限公司 A kind of high Tumble and swirl inlet structure
CN111379649A (en) * 2020-03-23 2020-07-07 重庆长安汽车股份有限公司 Intake duct applied to high-compression-ratio direct-injection self-priming internal combustion engine
CN113482813A (en) * 2021-06-30 2021-10-08 东风汽车集团股份有限公司 Air inlet channel, engine and vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004124835A (en) * 2002-10-03 2004-04-22 Nissan Motor Co Ltd Intake device of internal combustion engine
CN101666277A (en) * 2009-09-24 2010-03-10 重庆长安汽车股份有限公司 Petrol engine air inlet passage with high-tumble intensity and high-flow coefficient
CN101907032A (en) * 2010-07-30 2010-12-08 奇瑞汽车股份有限公司 Combustion system of engine
CN207437238U (en) * 2017-11-10 2018-06-01 重庆凯特动力科技有限公司 A kind of high Tumble and swirl inlet structure
CN111379649A (en) * 2020-03-23 2020-07-07 重庆长安汽车股份有限公司 Intake duct applied to high-compression-ratio direct-injection self-priming internal combustion engine
CN113482813A (en) * 2021-06-30 2021-10-08 东风汽车集团股份有限公司 Air inlet channel, engine and vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115199398A (en) * 2022-07-25 2022-10-18 东风汽车集团股份有限公司 Engine for igniting and compression ignition
CN115199398B (en) * 2022-07-25 2023-12-19 东风汽车集团股份有限公司 Engine capable of igniting compression ignition

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Application publication date: 20220301