CN110685827A - Structure is adjusted to engine inlet physical and chemical characteristics - Google Patents

Structure is adjusted to engine inlet physical and chemical characteristics Download PDF

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Publication number
CN110685827A
CN110685827A CN201910953314.6A CN201910953314A CN110685827A CN 110685827 A CN110685827 A CN 110685827A CN 201910953314 A CN201910953314 A CN 201910953314A CN 110685827 A CN110685827 A CN 110685827A
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CN
China
Prior art keywords
engine
deionized water
hydrogen
injection device
load
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
CN201910953314.6A
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Chinese (zh)
Inventor
庄远
钱立军
钱叶剑
汪陈芳
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Hefei University of Technology
Hefei Polytechnic University
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Hefei Polytechnic University
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Filing date
Publication date
Application filed by Hefei Polytechnic University filed Critical Hefei Polytechnic University
Priority to CN201910953314.6A priority Critical patent/CN110685827A/en
Publication of CN110685827A publication Critical patent/CN110685827A/en
Pending legal-status Critical Current

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    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/025—Adding water
    • F02M25/028—Adding water into the charge intakes
    • 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
    • F02B47/00—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
    • F02B47/02—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being water or steam
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/10—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone
    • 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

Abstract

The invention discloses an engine air intake physicochemical characteristic adjusting structure which is arranged on an air inlet pipe of an engine and comprises a deionized water injection device and a hydrogen injection device, wherein the deionized water injection device and the hydrogen injection device are both electrically connected with a traveling computer so as to control the injection amount of deionized water hydrogen when the engine is in a working condition of medium and small loads, and control the injection amount of deionized water when the engine is in a working condition of high load.

Description

Structure is adjusted to engine inlet physical and chemical characteristics
Technical Field
The invention relates to the technical field of automobile engines, in particular to an engine air inlet physical and chemical characteristic adjusting structure.
Background
In the prior art, the physicochemical characteristic of air inlet is not adjusted on the engine, or only one of water and hydrogen is used for adjustment, so that the aim of improving the working efficiency of the engine is fulfilled, but the water and hydrogen are not reasonably allocated in the prior art, so that the aims of better adjusting the working efficiency of the engine and reducing the discharge capacity of nitrogen oxides are fulfilled.
Disclosure of Invention
The invention aims to provide an air inlet physical and chemical characteristic adjusting structure of an engine, and provides a reasonable configuration scheme of water and hydrogen so as to further improve the working efficiency of the engine.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an engine advances gas physical and chemical properties and adjusts structure, adjust the structure and set up in the intake pipe of engine, adjust the structure and include deionized water injection apparatus and hydrogen injection apparatus, deionized water injection apparatus and hydrogen injection apparatus all with driving computer electric connection to control the injection volume of deionized water hydrogen when the engine is in the operating mode of medium and small load, when the operating mode of high load, control the injection volume of deionized water, and when deionized water accounts for the fuel proportion and exceeds 50%, supply hydrogen.
Further, when the engine is in a working condition of medium and small load, the hydrogen injection device injects hydrogen into the engine according to the rotating speed and load of the engine and the air inflow so as to improve the combustion efficiency, when the proportion of the hydrogen to the fuel exceeds 4%, the deionized water injection device injects deionized water into the engine, the proportion of the deionized water to the fuel is controlled to be less than 10%, and when the engine is in a working condition of high load, the deionized water injection device injects the deionized water into the engine so as to advance the ignition advance angle.
Preferably, the first nozzle of the deionized water injection device and the second nozzle of the hydrogen injection device are respectively arranged at the throat of the air inlet pipe.
Compared with the prior art, the invention has the beneficial effects that:
under the working condition of medium and small load (the opening of a throttle valve is within 0.25-0.85/0.25), certain hydrogen is injected according to the rotation speed, the load and the air inflow of the engine and the proportion of oil injection, so that the combustion speed of the engine can be effectively improved, the combustion of the engine is close to the theoretical constant-volume cycle, and the combustion efficiency of the engine is improved. Meanwhile, when the injection proportion of the hydrogen gas exceeds a certain limit (4%) according to working conditions at medium and small loads, a small amount of water can be injected in the air inlet channel (the water/oil proportion is less than 10%), so that the increase of the oxide caused by the injection of the hydrogen gas can be reduced while the efficiency is not reduced.
Under the working condition of a high-load engine (the opening of a throttle valve is 0.85-0.95), the knocking tendency of combustion can be reduced by injecting a large proportion of water, so that the ignition advance angle is advanced, the combustion phase is in a relatively high-efficiency range, the combustion-work conversion efficiency is increased, the thermal efficiency of the engine is improved, and the emission with oxides can be reduced. However, generally, when the water/oil injection amount exceeds 50%, the excessive water may not be completely evaporated efficiently, especially at high speed and high load. This causes the presence of water mist, which greatly worsens combustion. However, if a certain proportion of hydrogen is injected at this time, this deterioration can be alleviated without causing the problem of knocking.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a graph of cylinder pressure versus water injection in accordance with the present invention;
figure 3 is a graph showing the improvement of the combustion process by hydrogen loading according to the present invention.
In the figure: the device comprises an engine-1, an air inlet pipe-2, a deionized water injection device-3, a hydrogen injection device-4, a first nozzle-5 and a second nozzle-6.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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 present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawing 1, the adjusting structure is arranged on an air inlet pipe 2 of an engine 1 and comprises a deionized water injection device 3 and a hydrogen injection device 4, specifically, the deionized water injection device 3 comprises a first nozzle 5 and a controller which are arranged at the throat of the air inlet pipe 2, the hydrogen injection device 4 comprises a second nozzle 6 and a controller which are arranged at the throat of the air inlet pipe 2, and the deionized water injection device 3 and the controller of the hydrogen injection device 4 are both electrically connected with a crane computer so as to control the injection amount of deionized water hydrogen when the engine 1 is in a medium-small load working condition and control the injection amount of deionized water when the engine is in a high-load working condition.
Specifically, under the working condition of medium and small loads of the engine 1, the hydrogen injection device 3 injects hydrogen into the engine 1 according to the rotating speed, the load and the air inflow of the engine 1 so as to improve the combustion efficiency, when the injection proportion of the hydrogen to the fuel exceeds 4%, the deionized water injection device 3 injects deionized water into the engine 1, the injection proportion of the deionized water to the fuel is controlled to be less than 10%, under the working condition of high loads of the engine 1, the deionized water injection device 3 injects the deionized water into the engine so as to advance the ignition advance angle, and when the injection proportion of the deionized water to the fuel exceeds 50%, the hydrogen is supplemented.
FIG. 2 is a graph showing the relationship between cylinder pressure and water injection amount, in which the pressure in the cylinder is reduced after deionized water is gradually added, FIG. 3 is a graph showing the improvement of combustion process by hydrogen injection, including the effects of different water injection amounts, ignition advance angles and hydrogen injection on the cylinder pressure,
although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (3)

1. The utility model provides an engine advances gas physical and chemical properties and adjusts structure, adjust the structure and set up in the intake pipe of engine, its characterized in that, adjust the structure and include deionized water injection apparatus and hydrogen injection apparatus, deionized water injection apparatus and hydrogen injection apparatus all with driving computer electric connection to control the injection volume of deionized water and hydrogen when the engine is in the operating mode of medium and small load, during the operating mode of high load, control the injection volume of deionized water, and when deionized water accounts for fuel proportion and exceeds 50%, supply hydrogen.
2. An engine intake physical-chemical characteristic adjustment structure according to claim 1, characterized in that: the engine is under the working condition of medium and small load, the hydrogen injection device injects hydrogen into the engine according to the rotating speed and load of the engine and the air input so as to improve the combustion efficiency, and when the proportion of the hydrogen to the fuel exceeds 4 percent, the deionized water injection device injects deionized water into the engine and controls the proportion of the deionized water to the fuel to be less than 10 percent; when the engine is in a high-load working condition, the deionized water injection device injects deionized water to the engine so as to advance the ignition advance angle.
3. An engine intake physical-chemical characteristic adjustment structure according to claim 2, wherein: the first nozzle of the deionized water injection device and the second nozzle of the hydrogen injection device are respectively arranged at the throat of the air inlet pipe.
CN201910953314.6A 2019-10-09 2019-10-09 Structure is adjusted to engine inlet physical and chemical characteristics Pending CN110685827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910953314.6A CN110685827A (en) 2019-10-09 2019-10-09 Structure is adjusted to engine inlet physical and chemical characteristics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910953314.6A CN110685827A (en) 2019-10-09 2019-10-09 Structure is adjusted to engine inlet physical and chemical characteristics

Publications (1)

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CN110685827A true CN110685827A (en) 2020-01-14

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114508434A (en) * 2020-11-17 2022-05-17 沃尔沃卡车集团 Method for controlling injection in a combustion engine
US11459978B2 (en) 2020-11-17 2022-10-04 Volvo Truck Corporation Piston arrangement for a clean combustion engine

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CN104334858A (en) * 2012-03-21 2015-02-04 玫玛研究有限责任公司 Internal combustion engine using a water-based mixture as fuel and method for operating the same
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CN108547711A (en) * 2018-03-09 2018-09-18 同济大学 A kind of portable internal combustion machine water injector
CN108953006A (en) * 2018-07-13 2018-12-07 合肥工业大学 A kind of novel engine in-cylinder combustion is adjusted and controlled and method
CN109707505A (en) * 2018-12-30 2019-05-03 北京工业大学 A kind of zero nitrogen engine and its control method based on water spray control Pressure Rise Rate oxygen closed cycle
CN109736937A (en) * 2019-02-25 2019-05-10 北京工业大学 A kind of dual ignition plug fuel combination rotor machine and its control method

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DE4315034A1 (en) * 1992-05-12 1993-11-18 Hilarius Dipl Ing Drzisga Multistage method to operate two=stroke engine - enables engine to do mechanical work and to produce hydrogen
CN1222220A (en) * 1996-06-21 1999-07-07 国际融合有限公司 Internal combustion engine using water decomposition gas
CN1461377A (en) * 2001-04-06 2003-12-10 三菱重工业株式会社 Method of operating internal combustion engine injected with critical water
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CN1871425A (en) * 2003-10-21 2006-11-29 丰田自动车株式会社 Internal combustion engine utilizing hydrogen
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CN104141548A (en) * 2013-05-07 2014-11-12 福特环球技术公司 DIRECT INJECTION OF DILUENTS OR SECONDARY FUELS IN GASEOUS FUEL ENGINEs
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CN108953006A (en) * 2018-07-13 2018-12-07 合肥工业大学 A kind of novel engine in-cylinder combustion is adjusted and controlled and method
CN109707505A (en) * 2018-12-30 2019-05-03 北京工业大学 A kind of zero nitrogen engine and its control method based on water spray control Pressure Rise Rate oxygen closed cycle
CN109736937A (en) * 2019-02-25 2019-05-10 北京工业大学 A kind of dual ignition plug fuel combination rotor machine and its control method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114508434A (en) * 2020-11-17 2022-05-17 沃尔沃卡车集团 Method for controlling injection in a combustion engine
EP4001628A1 (en) * 2020-11-17 2022-05-25 Volvo Truck Corporation A method for controlling injection in a combustion engine
US11459978B2 (en) 2020-11-17 2022-10-04 Volvo Truck Corporation Piston arrangement for a clean combustion engine
US11512654B2 (en) 2020-11-17 2022-11-29 Volvo Truck Corporation Method for controlling injection in a combustion engine

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