• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1442442 IC engines, admission and exhaust passages L ELSBETT and G ELSBETT 16 July 1973 [17 July 1972] 33710/73 Heading FIB I.C. engine, having valves to close admission and exhaust passages, wherein at least one of the passages includes a valve portion 3 on the valve axis V, a helical portion 4 the axis Y of which extends adjacent the valve axis in a plane K including the valve axis and a curved portion 5 which extends from the plane, and includes a part 13 of reverse curvature to the remainder of the curved portion, the helical portion 6 lying between the valve portion and the curved portion and the junction between the helical and curved portions is eccentrically disposed relative to the valve axis and is at or near the plane K. The wall 13 of the curved portion is tangential to a line E normal to the plane K and passing through the axis Y of the helical portion. The passage ends at a plane K' passing through the point of tangency. The helical portion has a constant pitch, a constant maximum radius over its arcuate length and extends through at least 220 degrees of arc. The longitudinal centre line 22 of the curved portion lies close to, or preferably in a plane which is substantially perpendicular to the plane K. The length of the valve portion 3 is 0.3 to 0.5 times the effective diameter of the valve. The passage has a generally circular cross-section and the pitch of the helical portion is twice the mean diameter of the passage.
    公开号:SU741808A3
    申请号:SU731960333
    申请日:1973-07-16
    公开日:1980-06-15
    发明作者:Эльсбетт Людвиг；Эльсбетт Гюнтер
    申请人:за вител；
    IPC主号:
    专利说明:

    The invention relates to internal combustion engines.
    Known air supply channel of the cylinder head, for example, for the intake system of an internal combustion engine, containing a conjugate input curved section, the initial plane of which coincides with the outer surface of the wall of the cylinder head and one of the end points of which lies in the plane of the cross section of the channel passing through the axis of the cylinder and valve , a vertical spiral section with a spiral axis eccentric to the valve axis in the same plane, and also an outlet section supplying gas to the cg chamber injury [1].
    With this configuration of interconnected sections - inlet, spiral and outlet - the air entering the combustion chamber of the engine receives a certain turbulence, which contributes to intensive mixing and complete combustion of fuel. The intensity of the swirling flow is determined mainly by the gvrametry spiral section.
    However, the irrational configuration of the outlet section in the zone of gas entry into the cylinder (due to the presence of spherical expansion) and the lack of correlation between the geometric characteristics of the inlet and spiral sections of the channel predetermines the presence of significant hydrodynamic pressure losses during the flow of a large amount of gas, which significantly reduces the filling coefficient of the working cylinder, in features in the case of air inlet. Sized engines. With the increased number of cycles characteristic of diesel engines boosted by the number of revolutions, swirling of the air flow is the main factor guaranteeing the optimal, from the point of view of gas dynamics, organization of the working process in the phases of filling and combustion.
    The purpose of the invention is to increase the efficiency of vortex formation and combustion.
    This is achieved by coordinating the geometric characteristics of all sections of the air supply channel.
    This is due to the organization of the dynamic effect of the vortex when swirling the air flow during the filling of the working cylinder.
    To achieve this, the inlet section of the air supply channel is made S-shaped, its initial plane coincides with the outer surface of the cylinder head, and the spiral section is made with a lifting angle of 220-360 °, and a constant distance between the axis of the spiral and the side walls passing into the exit cylindrical plot. The axis of the outlet section coincides with the axis of the valve, and its walls are parallel to the axis of the spiral, while part of the side wall of the S-shaped section, when 741808 4 is a hole in the cylinder head 10 and is connected at the end with the guide blade 7 so that its shell forms an inner the wall of the spiral section 4. The outer walls 11 of the spiral section 4 have approximately the same distance 5 from the axis of the spiral 9, so that the channel cross section in section 4 is almost constant.
    The walls 12 of the output section 3 due to
    ΙΟ of the cylindrical design of this part of the channel also have the same distance from the axis of the valve V. The inlet S-shaped section 5 adjacent to the spiral section 4 is also adjacent to the axis of the spiral, made in the form of a guide vane. fifteen
    For a smooth flow of air flow without interruptions, at least one of the points of the inner wall of the channel lies on a straight line passing through the axis of the spiral perpendicular to the plane of the cross section of the channel, 20 the height of the outlet section is 0.3-0.5 of its diameter, and the spiral section itself has a cross section in the form of a trapezoid, the larger base of which is facing the opening of the inlet section. 25
    With such a relationship of the channel elements, the flow becomes quite stable.
    In Fig.1 shows an air supply channel, a cross section; in FIG. 2 - The cylinder head 30, the cylinders of the engine in the channel section plane I-Ι FIG. 1, section; in FIG. 3 - cylinder head in a plane perpendicular to the section, in FIG. 2, a cut.
    The air inlet channel 1 consists of 35 three conjugate sections, the first of which, counting from the cylinder · 2 of the engine, is made as the output channel 3, the second in the form of a spiral section 4 and the third, inlet, as an S-shaped curved guide 4 θ of channel 5 Spiral. the helical section 4, which is located between the output and input sections 3 and 5, has a helical elevation 6, which bends around the axis of the spiral Y, located on the outside from the axis X of cylinder 2. The axis of the spiral! ', which is located in the plane of the cross section of channel K passing through the axis of the cylinder and valve, the mixture has a uniform cross section, as well as section 4. The input S-shaped section 5 of channel 1 is made in such a way that the straight line E intersecting the plane of the cross section of channel K passing through the axis of the spiral Υ touches eshney wall surface 13 of the cylinder head 10 in the zone of the cross-sectional plane of the channel K 1 extending parallel to the cross-sectional plane of the channel C. Thus, the point of tangency E line 14 determines the initial position of the plane of the guiding portion 5, from which the channel 1 enters the screw-shaped spiral portion 4 .
    The geometric characteristics of individual sections of the channels, providing optimal swirling of the flow, were chosen experimentally, including the shape of the cross section of the sections. The length of the S-shaped section, it is advisable to take equal udEoeknoy-triple the average diameter D (Fig. 1). As for the distance a of the displacement of the axis of the spiral Y with respect to the axis of the valve V, this distance should be equal to 0.25-0.5 of the diameter D of the output section 3, and the height h can be 0.30.5 of the diameter D. As an optimal lift 6 in the spiral section should be taken twice the average diameter of the channel D for each revolution of the spiral. The indicated values, however, are approximate, obtained during the tests, and do not exclude the choice of other geometric sizes. The optimal execution parameters are implemented according to experimental data with the proposed size ratios of the conjugate sections of the channel.
    distance to the axis of the valve V.
    The lift 6 has a helix angle of at least 220-360 ° (in this embodiment, 240 °) and is limited by the wall 7 forming the end of the section 4. The wall 7 in the form of a guide blade is a continuation of the wall 8 and is extended, for example, by half valve diameter.
    Provided in the area of the axis of the spiral U valve guide 9, which is made in
    权利要求:
    Claims (6)
    [1]
    This invention relates to internal combustion engines. A known air inlet duct of a head of a dalindra, for example, for an internal combustion engine suction system, contains a adjoining curvilinear inlet section whose initial plane coincides with the external surface of the cylinder head wall and one of the end points lies in the plane of the cross section of the channel passing through the axes a cylinder and a valve, a vertical spiral section with an axis of the helix located eccentrically to the axis of the valve in the same plane, as well as an outlet section that supplies gas to the chamber with Mount 1. With this configuration of interconnected areas — the inlet, spiral, and output — the air entering the combustion chamber of the engine receives a certain twist, which contributes to a more intensive mixture formation and complete combustion of the fuel. The swirling intensity of the flow is determined mainly by the trameters of the spiral section. However, the irregular configuration of the outlet section in the zone of gas entry into the cylinder (due to the presence of a shcharabny expansion) and the lack of interconnection of the geometric characteristics of the inlet and spiral sections of the channel determines the presence of significant hydrodynamic pressure losses during the flow of a large amount of gas, which significantly reduces the filling ratio of the working cylinder , especially in the case of the supply of air in form. sirovanny engines. With increased cycle numbers characteristic of diesel engines forced by speed, the turbulence of airflow is the main factor, which, in terms of gas dynamics, is optimal in organizing the working process in the filling and combustion phases. The purpose of the invention is to increase the efficiency of vortex formation and combustion. This is achieved by matching the geometrical characteristics of all sections of the air passage. This is accomplished by organizing the dynamic effect of the vortex on spinning the air flow during the filling of the working cylinder. To achieve this, the inlet section of the air passage channel is made S-shaped, its initial plane coincides with the outer surface of the cylinder head, and the spiral section is made with a lifting angle of 220-360 ° and a constant distance between the axis of the helix and side walls. in the output cylindrical section. At the same time, the axis of the outlet section coincides with the axis of the valve, and its walls are parallel to the axis of the helix, whereas the part of the side wall of the S-shaped section, gripping to the axis of the helix, is made in the form of a guide blade. For a smooth, uninterrupted flow of air flow, at least one of the points of the inner wall of the channel lies on the straight, passing through the axis of the spiral perpendicular to the plane of the cross section of the channel, the height of the outlet section is 03-0.5 of its diameter The plot has a trapezoid cross section, the larger base of which faces the opening of the inlet portion. With this interconnection of the channel elements, the flow of the flow becomes quite stable. FIG. Figure 1 shows the air passage Kana cross section; in fig. 2 shows an engine cylinder head in a sectional plane of channel M in FIG. 1, the cut; in fig. 3 — cylinder head in a plane perpendicular to the section; FIG. 2, the cut. The air duct 1 consists of three adjacent sections, the first of which, counting from the cylinder 2 of the engine, is designed as an output channel 3, the second in the shape of the spiral section 4 and the third, input, as an S-shaped curved guide channel 5 The spiral, helical section which is located between the exit and inlet sections 3 and 5 has a screw lift 6 which bends around the axis of the spiral Y located on the outer side of the axis X of the cylinder 2. The axis of the spiral Y which is located in the cross-sectional plane to The analog channel K passing through the axes of the cylinder and the valve is displaced by a distance a with respect to the axis of the valve V. Lifting 6 has a helix angle of not less than 220-360 ° (in this variant 240 °) and is limited by wall 7 forming the end of section 4. Wall 7 in the form of a guide vane is an extension of wall 8 and is elongated, for example, by an amount equal to half the diameter of the valve. Provided in the area of the axis of the spiral Y, a valve 9, which is made in the form of an opening in the head of the slider 10 and is connected at the end with the guide vane 7 so that its shell forms the inner wall of the spiral section 4. The outer walls 11 of the spiral section 4 have approximately the same distance b from the axis of the helix 9, so that the cross section of the channel in section 4 is almost constant. The walls 12 of the outlet section 3 due to the cylindrical design of this part of the channel also have the same distance from the axis of the valve V. The inlet S-shaped section 5 adjacent to the spiral-shaped section 4 also has a uniform cross-section, as well as section 4. The input S-shaped section 5 of the channel 1 is designed in such a way that the straight line E, crossing the plane of the cross section of the channel K, passing through the axis of the spiral Y, touches the outer surface of the wall 13 of the cylinder head 10 in the zone of the plane of the cross section of the channel K passing steam allele of the plane of the cross section of the channel K. Thus, the straight E with the point of tangency 14 determines the position of the initial plane of the guide section 5, from which channel 1 turns into spiral and screw-like and section 4. Geometric characteristics of individual sections of the channels ensuring optimal flow turbulence, selected experimentally, including the cross-sectional shape of the sections. The length of the S-shaped section is advisable to take equal to twice-three times the average diameter D (Fig. 1). As regards the distance and offset of the axis of the spiral V with respect to the axis of the valve V, this distance should be equal to 0.25-0.5 of the diameter D of the output section 3, and the height h can be 030, 5 of the diameter D. As The optimal lift 6 in the spiral section should be a gfin t twice the average diameter of the channel D for each turn of the spiral. These values, however, are approximate, obtained during the tests, and do not exclude the choice of other geometrical dimensions. The optimal performance parameters are realized according to experimental data with the proposed ratios of the sizes of the adjacent channel sections. Claim 1. Air supply duct of cylinder head, for example, for the engine intake system of an internal combustion engine, containing adjoining inlet curvilinear section, the initial plane of which coincides with the outer surface of the cylinder head wall and one of the end points lies in the plane of the channel cross-section the spiral section with the axis of the spiral located eccentrically to the axis of the valve in the same plane, and the outlet section bringing the gas into the combustion chamber , differs with the fact that, in order to increase the efficiency of vortex formation and combustion, the inlet section is made S-shaped and its initial plane coincides with the outer surface of the cylinder head, and the spiral section has a constant elevation angle equal to 220-360 ° and a constant the distance between the axis of the helix and the side walls passing into the output cylindrical section.
    [2]
    2. A channel according to claim 1, characterized in that the axis of the outlet section coincides with the axis of the valve, and its walls are parallel to the axis of the helix.
    [3]
    3. Channel according to claim 2, characterized in that the portion of the side wall of the S-shaped portion flushing to the axis of the helix is made in the form of a guide vane.
    [4]
    4. Channel on PP. 1, 2, and 3, so that at least one of the points of the inner wall of the channel lies on a straight line passing through the axis of the helix perpendicular to the plane of the cross section of the channel.
    [5]
    5. A duct according to claim 1, characterized in that the height of the exit section is 0.3-0.5 of its diameter.
    [6]
    6. Channel on PP. 1-5, characterized in that the helical section has a trapezoid cross section, the base of which is facing the opening of the inlet section. Sources of information taken into account during the examination 1. Swiss patent N 434872, cl. 46 s, 4, pub. 1967.
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    12 Figure 5
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    同族专利:
    公开号 | 公开日
    RO68681A|1981-09-24|
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    FR2193147B1|1977-05-13|
    IT991219B|1975-07-30|
    GB1442442A|1976-07-14|
    DE2235050A1|1974-01-31|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR1361447A|1963-04-08|1964-05-22|Renault|Cylinder head for internal combustion engine|JPS5329763B2|1975-07-14|1978-08-23|
    JPS5924851Y2|1977-01-14|1984-07-23|
    JPS5920850B2|1978-09-25|1984-05-16|Toyota Motor Co Ltd|
    JPS5840647B2|1978-10-19|1983-09-07|Toyota Motor Co Ltd|
    DE2908293C2|1979-03-03|1982-09-16|Motoren-Werke Mannheim AG vorm. Benz Abt. stationärer Motorenbau, 6800 Mannheim|Inlet duct for internal combustion engines|
    BR8203421A|1981-06-15|1983-06-07|Deere & Co|HELICOIDAL ADMISSION OPENING|
    JPS6127568B2|1981-10-29|1986-06-26|Nissan Motor|
    JPS5912125A|1982-07-12|1984-01-21|Toyota Central Res & Dev Lab Inc|Inlet port of internal combustion engine|
    US4574751A|1983-08-19|1986-03-11|Kabushiki Kaisha Toyota Chuo Kenkyusho|Inlet port for internal combustion engine|
    JPH0218407B2|1983-09-05|1990-04-25|Toyoda Chuo Kenkyusho Kk|
    US4606308A|1985-09-16|1986-08-19|General Motors Corporation|Engine cylinder intake port|
    US4745890A|1986-10-01|1988-05-24|General Motors Corporation|Engine with fluidic variable swirl port|
    AT115238T|1991-08-07|1994-12-15|Avl Verbrennungskraft Messtech|MULTI-CYLINDER COMBUSTION ENGINE WITH INNER MIXTURE.|
    US5558061A|1995-12-22|1996-09-24|General Motors Corporation|Engine cylinder intake port|
    US6109234A|1998-10-16|2000-08-29|Ford Global Technologies, Inc.|Cylinder head intake system|
    FR2926333A3|2008-01-15|2009-07-17|Renault Sas|Gas intake system for oil engine, has intake conduit with downstream section forming deviation ramp for modifying orientation of gas flow coming out through orifice relative to orientation of gas flow coming out from helical section|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2235050A|DE2235050A1|1972-07-17|1972-07-17|SPIRAL CHANNEL, ESPECIALLY IN THE INTAKE SYSTEM OF RECIPROCATING PISTON INTERNAL ENGINEERING MACHINES|
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