SU1002629A2

SU1002629A2 - Precombustion chamber

Info

Publication number: SU1002629A2
Application number: SU782564362A
Authority: SU
Inventors: Сергей Александрович Джаноян; Джумбер Бенедиктович Месхи; Мераб Галактионович Глонти
Original assignee: Институт Механики Машин Ан Гсср
Priority date: 1978-01-05
Filing date: 1978-01-05
Publication date: 1983-03-07

Description

1one

Изобретение относитс к машиностроению , в частности двигателестроениго , а именно.к конструкци м форкамер , преимущественно дл роторных двигателей, работающих с факельным зажиганием.The invention relates to mechanical engineering, in particular, engine-building, in particular, to pre-chamber structures, mainly for rotary engines operating with flare ignition.

По основному авт.св. № известны форкамеры, выполненные в виде корпуса с каналами дл подвода воздуха и отвода продуктов сгорани , ,Q топливоподающей форсункой, свечой зажигани и тепловым экраном, расположенным между свечой и форсункой, выполненным в виде полого конуса, размещенного с зазором относительно ,5 стенок корпуса форкамеры, со стороны вершины которого соосно с ним расположена форсунка и тангенциально каналы дл подвода воздуха, а со стороны оснооани - свеча зажигани и го каналы дл отвода продуктов сгорани tOВвиду отсутстви охлаждени стенок корпуса создаетс возможность возникновени местных зон перегрева и прогара .According to the main auth. No. known prechamber, made in the form of a housing with channels for supplying air and removal of combustion products, Q fuel injection nozzle, spark plug and heat shield located between the candle and the nozzle, made in the form of a hollow cone, placed with a gap relative to, 5 walls of the pre-chamber housing , from the side of which the nozzle and tangentially channels for the supply of air are located coaxially with it, and from the side of the base there is a spark plug and channels for removal of combustion products tO Due to the absence of cooling of the walls body is created the possibility of the occurrence of local hot spots and burnout.

Цель изобретени - повышение надежности и эффективности путем одновременного воздушного охлаждени корпуса и подогрева подводимого воздуха.The purpose of the invention is to increase reliability and efficiency by simultaneously air-cooling the casing and preheating the supplied air.

.Дл достижени поставленной цели в форкамере часть корпуса, расположен-на со стороны основани теплового экрана, выполнена сребренной и снабжена охватывающим ее кожухом, образующим с корпусом кольцевую воздушную камеру, св занную с каналами подвода воздуха в форкамеру, причем кс.иух снабжен патрубком дл подвода воздуха в воздушную камеру.In order to achieve this goal in the prechamber, a part of the body, located on the side of the heat shield, is made of silver and has a casing around it that forms an annular air chamber with the body connected to the air inlet channels in the prechamber, and air supply to the air chamber.

На фиг. 1 изображена форкамера; на фиг. 2 - сечение А-А на фиг. 1 .FIG. 1 shows a prechamber; in fig. 2 is a section A-A in FIG. one .

Claims

The chamber contains a housing 1, made from the side of the base of a hollow cone in the form of a thin shell, on the outer surface of which ribs 2 are obstructed, and a cylindrical casing 3 is mounted on top. Between the surfaces of the housing 1 and casing 3 there is a cavity of an annular air chamber a source of air and channels 6 for supplying air to the prechamber. The casing is covered from above with a lid 7. A heat shield 8 is located in the working cavity of the chamber 8. Nozzle 9 is coaxial with the screen in the lid and tangent Flax channels 10. Behind the screen is a spark plug 11 and channels 12 for discharging the products of combustion. The screen divides the working chamber of the pre-chamber into two zones: constant mixture formation B and constant burning B. The prechamber works as follows. the formation of a flame flame at its electrodes in the steady burning zone ignites a stationary torch. The fuel passing through the nozzle 9) is directed to the conical surface of the heat shield 8, continuously heated by the heat of the stationary torch. ate located under it. As a result, the fuel evaporates and is stirred by streams of tangentially directed through the channels 10 around the cone of the screen 8 air jets. The flow of the fuel-air mixture created in this way maintains the combustion of the stationary torch, and the combustion products formed during this are diverted through the ducts 12. From the air source through the nozzle 5, the air flow is directed to the annular air chamber H and by flowing around the ribbed surface of the housing 1 heat removal from this surface, i.e. its cooling and maintaining the required shell temperature. As a result of heat extraction by air, its temperature rises. The heated air flow enters the channels 6 through the tangential holes 10 into the mixing zone. By supplying heated air to the pre-chamber, they intensify the process of formation and burning of Lietca; at the same time, multi-fueling of the chamber is achieved. The invention claims prechamber auth.St. No., characterized in that, in order to increase the reliability and efficiency of combustion by improving the air cooling of the body and preheating the supplied air, a part of the body is located on the base side. heat shield, made of ribbed and equipped with a casing surrounding it, forming with the body an annular air chamber associated with channels for supplying air to the prechamber, and the casing is provided with a nozzle for supplying air into the air chamber. Sources of information taken into account in the examination 1. USSR author's certificate W, cl. F 02 B 19/12, 1976.