SU1402687A1 - Combustion chamber of internal combustion engine - Google Patents

Combustion chamber of internal combustion engine Download PDF

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Publication number
SU1402687A1
SU1402687A1 SU864046294A SU4046294A SU1402687A1 SU 1402687 A1 SU1402687 A1 SU 1402687A1 SU 864046294 A SU864046294 A SU 864046294A SU 4046294 A SU4046294 A SU 4046294A SU 1402687 A1 SU1402687 A1 SU 1402687A1
Authority
SU
USSR - Soviet Union
Prior art keywords
combustion chamber
fuel
angle
combustion
pcu
Prior art date
Application number
SU864046294A
Other languages
Russian (ru)
Inventor
Владимир Дмитриевич Новоселов
Геннадий Алексеевич Букреев
Виктор Кузмич Сафонов
Original Assignee
Центральный научно-исследовательский дизельный институт
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 Центральный научно-исследовательский дизельный институт filed Critical Центральный научно-исследовательский дизельный институт
Priority to SU864046294A priority Critical patent/SU1402687A1/en
Application granted granted Critical
Publication of SU1402687A1 publication Critical patent/SU1402687A1/en

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Classifications

    • 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
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0696—W-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder wall
    • 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
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0618—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston having in-cylinder means to influence the charge motion
    • F02B23/0621—Squish flow
    • 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
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0645—Details related to the fuel injector or the fuel spray
    • F02B23/0648—Means or methods to improve the spray dispersion, evaporation or ignition
    • F02B23/0651—Means or methods to improve the spray dispersion, evaporation or ignition the fuel spray impinging on reflecting surfaces or being specially guided throughout the combustion space
    • 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

Изобретение .может быть использовано при усовершенствовании камер сгорани  дизелей с диаметром цилиндра, равным 250-350 мм. Цель изобретени  - повышение экономичности двигател  путем усовершенствовани  геометрии камеры сгорани  и выбора оптимального угла столкновени  топливных струй со стенкой камеры . Камера 1 сгорани  образована центральным коническим выступом 6 на днище поршн  5, плавно сопр женным на периферии с конической боковой поверхностью КБП) 7, вершина которой обрашена в сторону оси коленчатого вала. Угол при вершине КБП выполнен равным 60-80°, угол между осью распыливающего отверсти  топливной форсунки 8 и образующей КБЦ - равным 65-75. Такое вы- понение камеры сгорани  позвол ет устранить причины оседани  и закоксовывани  топлива на КБП и способствует улучшению смесеобразовани  и сгорани  топлива . 1 ил. SThe invention can be used to improve the combustion chambers of diesel engines with a cylinder diameter of 250-350 mm. The purpose of the invention is to increase the efficiency of the engine by improving the geometry of the combustion chamber and selecting the optimal angle of collision of the fuel jets with the chamber wall. The combustion chamber 1 is formed by a central conical protrusion 6 on the bottom of the piston 5, which smoothly mates on the periphery with the conical side surface of the PCU) 7, the top of which is edged towards the axis of the crankshaft. The angle at the vertex of the PCU is equal to 60-80 °, the angle between the axis of the spray hole of the fuel nozzle 8 and the forming of the CWC is equal to 65-75. Such a definition of the combustion chamber eliminates the causes of fuel sedimentation and coking on the PCU and contributes to the improvement of the mixture formation and combustion of the fuel. 1 il. S

Description

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Изобретение относитс  к машиностроению , в частности двигателестроению и может найти применение при усовершенствовании камер сгорани  дизелей широкого народнохоз йственного значени  с диаметром цилиндра, равным 250-350 мм.The invention relates to mechanical engineering, in particular, engine-building, and can be used to improve the combustion chambers of diesel engines of a wide national-economic value with a cylinder diameter of 250-350 mm.

Целью изобретени   вл етс  повышение экономичности двигател  путем усовершенствовани  геометрии камеры сгорани  и выбора оптимального угла столкновени  топливных струй со стенкой камеры.The aim of the invention is to increase the efficiency of the engine by improving the geometry of the combustion chamber and selecting the optimal angle of collision of the fuel jets with the wall of the chamber.

На чертеже схематически изображена камера сгорани , разрез по диаметру цилиндраКамера 1 сгорани  ограничена поверхност ми цилиндра 2, огневого днища 3 крышки 4 цилиндра 2 и днищем поршн  5, которое выполнено в виде фигурной поверхности , образованной центральным коническим выступом 6 на днище поршн , плавно сопр женным на периферии с конической боковой поверхностью 7, вершина которой обращена в сторону оси коленчатого вала. Камера 1 сгорани  снабжена топливной форсункой 8 с распыливаюши у;и отверсти ми. Угол а при вершине конической боковой поверхности выпонен равным 60-80°, а угол р между осью рас- пыливаюшего отверсти  и образующей конической боковой поверхности - 65-75°. Плоска  периферийна  часть 9 поршн  5 с поверхностью огневого днища 3 крышки 4 цилиндра 2 образует зазор 10.The drawing shows schematically a combustion chamber, a section along the diameter of the cylinder. The combustion chamber 1 is bounded by the surfaces of cylinder 2, firing bottom 3 of cylinder 4 cover 4 and piston bottom 5, which is made in the form of a figured surface formed by a central conical protrusion 6 on the bottom of the piston, seamlessly matching on the periphery with a conical side surface 7, the apex of which faces the axis of the crankshaft. The combustion chamber 1 is equipped with a fuel nozzle 8 with a spray gun and openings. The angle a at the apex of the conical side surface is equal to 60-80 °, and the angle p between the axis of the sputtering opening and the conical side surface forming 65-75 °. The flat peripheral part 9 of the piston 5 with the surface of the firing bottom 3 of the cover 4 of the cylinder 2 forms a gap 10.

Камера сгорани  работает следуюадим образом.The combustion chamber works as follows.

При работе двигател  в конце такта сжати  топливо форсункой 8 распыливает- с  в объеме камеры 1 сгорани . Зна0When the engine is in operation at the end of a compression stroke, the fuel nozzle 8 sprays in the volume of the combustion chamber 1. Zn0

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чительна  часть жидкого неиспарившегос  топлива, достига  конической боковой поверхности 7, с большой скоростью растекаетс  по ней и, попада  в верхнюю часть камеры сгорани , проникает в зазор 10 между крышкой 4 цилиндра 2 и дниш ,ем поршн  5, не достига  при этом относительно холодной поверхности цилиндра 2. Эта часть топлива в конце такта сжати  и в начале такта расширени  переме- щиваетс  с воздушным зар дом, наход щимс  в верхней части камеры, испар етс  и полностью сгорает.the positive part of the liquid non-evaporated fuel, reaching the conical side surface 7, spreads along it at high speed and, falling into the upper part of the combustion chamber, penetrates the gap 10 between the cover 4 of the cylinder 2 and the bottom of the piston 5, but does not reach the relatively cold surface cylinder 2. At the end of the compression stroke and at the beginning of the expansion stroke, this part of the fuel is displaced with the air charge at the top of the chamber, evaporates and burns completely.

Таким образом, камера сгорани  устран ет причины оседани  и закоксовывани  топлива на боковой конической поверхности и на поверхности втулки и способствует улучшению смесеобразовани  и сгорани  топлива.Thus, the combustion chamber eliminates the causes of fuel sedimentation and coking on the lateral conical surface and on the surface of the sleeve and contributes to the improvement of the mixture formation and combustion of the fuel.

Claims (1)

Формула изобретени Invention Formula Камера сгорани  двигател  внутреннего сгорани , образованна  центральным коническим выступом на днище поршн , плавно сопр женным на периферии с конической боковой поверхностью, вершина которой обращена в сторону оси коленчатого вала, и снабженна  топливной форсункой с по меньщей мере одним распы- ливающим отверстием, отличающа с  тем, что, с целью повышени  экономичности двигател , угол при вершине конической боковой поверхности равен 60-80°, а угол между осью распыливающего отверсти  форсунки и образующей конической боковой поверхности - 65-75°.The combustion chamber of an internal combustion engine, formed by a central conical protrusion on the bottom of the piston, smoothly mating on the periphery with a conical side surface, the apex of which faces the axis of the crankshaft, and is equipped with a fuel nozzle with at least one spray hole, that, in order to improve the efficiency of the engine, the angle at the apex of the conical side surface is 60-80 °, and the angle between the axis of the spray nozzle orifice and forming the conical side surface spine - 65-75 °.
SU864046294A 1986-01-02 1986-01-02 Combustion chamber of internal combustion engine SU1402687A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU864046294A SU1402687A1 (en) 1986-01-02 1986-01-02 Combustion chamber of internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU864046294A SU1402687A1 (en) 1986-01-02 1986-01-02 Combustion chamber of internal combustion engine

Publications (1)

Publication Number Publication Date
SU1402687A1 true SU1402687A1 (en) 1988-06-15

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SU864046294A SU1402687A1 (en) 1986-01-02 1986-01-02 Combustion chamber of internal combustion engine

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228517A1 (en) * 1992-08-27 1994-03-03 Man Nutzfahrzeuge Ag Diesel engine
DE4228518A1 (en) * 1992-08-27 1994-03-03 Man Nutzfahrzeuge Ag Combustion chamber shape for air-compressing, self-igniting internal combustion engines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Акцептованна за вка JP № 49-3.8209, кл. F 02 В 19/10, опублик. 1974. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228517A1 (en) * 1992-08-27 1994-03-03 Man Nutzfahrzeuge Ag Diesel engine
DE4228518A1 (en) * 1992-08-27 1994-03-03 Man Nutzfahrzeuge Ag Combustion chamber shape for air-compressing, self-igniting internal combustion engines

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