RU2109150C1 - Method of scavenging of two-stroke free-piston engine - Google Patents

Method of scavenging of two-stroke free-piston engine Download PDF

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Publication number
RU2109150C1
RU2109150C1 RU96106789A RU96106789A RU2109150C1 RU 2109150 C1 RU2109150 C1 RU 2109150C1 RU 96106789 A RU96106789 A RU 96106789A RU 96106789 A RU96106789 A RU 96106789A RU 2109150 C1 RU2109150 C1 RU 2109150C1
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Russia
Prior art keywords
valves
piston
charge
opening
intensity
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RU96106789A
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Russian (ru)
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RU96106789A (en
Inventor
О.И. Деев
С.О. Деев
Т.О. Деева
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Воронежский государственный аграрный университет им.К.Д.Глинки
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Priority to RU96106789A priority Critical patent/RU2109150C1/en
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Publication of RU2109150C1 publication Critical patent/RU2109150C1/en
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    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

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  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: valves 4-7 arranged in piston 2 pass air charge, and valves 8-11 of piston 3 pass exhaust gases. Pistons 2 and 3 are located in cylinder 1. Intensity of charge swirling in period of scavenging is provided by opening first exhaust valve 9 in piston 3 and then intake valve 4 in piston 2 displaced in longitudinal plane relative to valve 9, after which valves 10,5,11,6,7 and 8 open in turn. To increase intensity, greater displacement is set and opening of valves is provided in the following sequence: 10, 4,11,5,8,6,9,7. This provides adequate swirling of charge and intensity of cleaning and filling of cylinder 1 are improved. EFFECT: enhanced efficiency of free piston engine with valves in pistons by successive opening of exhaust and intake valves. 1 dwg

Description

Изобретение относится к двигателестроению, а именно к способам продувки двухтактовых свободнопоршневых двигателей. The invention relates to engine building, and in particular to methods of blowing two-stroke free piston engines.

Известен способ продувки двухтактного двигателя внутреннего сгорания с прямоточной продувкойи и вращательным движением воздушного заряда (авт. св. СССР N 315772, кл. F 02 B 27/00, 1971) с разделением заряда на части. A known method of purging a two-stroke internal combustion engine with straight-through purge and rotational movement of the air charge (ed. St. USSR N 315772, CL F 02 B 27/00, 1971) with the separation of the charge into parts.

Описанный способ обеспечивает быструю смену и вращение воздушного заряда в цилиндре. Однако разделение воздушного потока на отделение части усложняет конструкцию впускного коллектора и окон продувочного пояса и не позволяет контролировать интенсивность вращения. The described method provides a quick change and rotation of the air charge in the cylinder. However, the separation of the air flow into the separation of the part complicates the design of the intake manifold and the windows of the purge belt and does not allow to control the rotation intensity.

Наиболее близким по технической сущности и достигаемому результату является способ продувки в свободнопоршневом двухтактном двигателе-гидронасосе ( патентРФ N 1616235, кл. F 02 B 71/00, 1993), состоящий в продувке - наполнения рабочего цилиндра воздушным зарядом через клапаны двигательных поршней. The closest in technical essence and the achieved result is a method of purging in a free-piston two-stroke hydraulic pump (patent RF N 1616235, class F 02 B 71/00, 1993), which consists in purging - filling the working cylinder with air charge through the valves of the engine pistons.

Данный способ также обеспечивает быструю смену воздушного заряда благодаря прямому потоку впуска и выпуска. This method also provides a quick change of air charge due to the direct flow of the intake and exhaust.

Однако и в этом случае нет активного влияния на процесс прохождения потока воздушного заряда, что ухудшает процесс очистки и наполнения цилиндра. However, in this case, there is no active influence on the process of passing the flow of air charge, which affects the process of cleaning and filling the cylinder.

Предлагаемое решение позволяет решить поставленную в приведенных способах задачу и получить желаемый технический результат, заключающийся в улучшении процесса очистки и наполнения цилиндра. The proposed solution allows us to solve the problem posed in the above methods and obtain the desired technical result, which consists in improving the process of cleaning and filling the cylinder.

Технический результат достигается тем, что в способе прямоточной продувки через клапаны двигательных поршней управляют порядком открытия клапанов таким образом, что выпускные клапаны открываются поочередно с впускными и в такой последовательности, в которой необходима закрутка заряда. The technical result is achieved by the fact that in the direct-flow purging method through the valves of the engine pistons, the valve opening order is controlled in such a way that the exhaust valves open alternately with the inlet valves and in the sequence in which charging is required.

На чертеже дана схема, поясняющая описываемый способ. The drawing shows a diagram explaining the described method.

В двухтактном свободнопоршневом двигателе, имеющем цилиндр 1 и двигательные поршни 2 и 3 с клапанами 4-11, воздушный заряд проходит через клапаны 4-7, а выхлопные газы через клапаны 8-11 поршня 3. In a two-stroke free piston engine having a cylinder 1 and motor pistons 2 and 3 with valves 4-11, air charge passes through valves 4-7, and exhaust gases through valves 8-11 of piston 3.

Интенсивность закрутки заряда в период продувки достигается тем, что вначале открывается клапан 9 для выхода выхлопных газов в поршне 3, смещенный в продольной плоскости по отношению к клапану 4 в поршне 2, а затем клапан 4 в поршне 2 для входа воздушного заряда, после чего открываются в последовательности клапаны: 10, 5, 11, 6, 7, 8. The intensity of the swirling charge during the purge period is achieved by first opening the valve 9 for exhaust gas in the piston 3, offset in the longitudinal plane with respect to the valve 4 in the piston 2, and then the valve 4 in the piston 2 for entering the air charge, and then open in the sequence of valves: 10, 5, 11, 6, 7, 8.

Если необходима большая интенсивность закрутки, то открытие клапанов закладывается в следующей последовательности: 10, 4, 11, 5, 8, 6, 9, 7. If a greater twist intensity is required, then the opening of the valves is laid in the following sequence: 10, 4, 11, 5, 8, 6, 9, 7.

Таким образом, закрутка заряда и интенсивность очистки и наполнения цилиндра улучшаются. Thus, the charge spin and the cleaning and filling rate of the cylinder are improved.

Claims (1)

Способ продувки двухтактного свободнопоршневого двигателя с прямоточной продувкой через клапаны двигательных поршней, отличающийся тем, что открытие клапанов двигательных поршней производят таким образом, что выпускные клапаны открываются поочередно с впускными в последовательности, необходимой для закрутки заряда. A method of blowing a two-stroke free-piston engine with direct-flow blowing through the valves of the engine pistons, characterized in that the opening of the valves of the engine pistons is performed in such a way that the exhaust valves open alternately with the intake valves in the sequence required to tighten the charge.
RU96106789A 1996-04-09 1996-04-09 Method of scavenging of two-stroke free-piston engine RU2109150C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU96106789A RU2109150C1 (en) 1996-04-09 1996-04-09 Method of scavenging of two-stroke free-piston engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU96106789A RU2109150C1 (en) 1996-04-09 1996-04-09 Method of scavenging of two-stroke free-piston engine

Publications (2)

Publication Number Publication Date
RU2109150C1 true RU2109150C1 (en) 1998-04-20
RU96106789A RU96106789A (en) 1998-07-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU96106789A RU2109150C1 (en) 1996-04-09 1996-04-09 Method of scavenging of two-stroke free-piston engine

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