• 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:
    1. A PISTON FOR A MACHINE WITH A RETURN AND ADDITIONAL MOVEMENT OF A PISTON, MADE FOR A INTERNAL COMBUSTION ENGINE, made integral and containing a head, a skirt with an inner central part and a lubrication-cooling system, and the head and skirt are surrounded by a bend. through the holes in the peripheral surface of the piston skirt and fixed in the partially threaded blind holes of the head, and form a cooling chamber made in the form of central recesses in the end surfaces of the head and skirt the place of their junction, and articulation; (piston) with a connecting rod with a finger, having in the middle part a coal setting under the upper head of the connecting rod and connected to the head with at least one pin installed in the socket, made in the form of a semicircular pillow in the central part of the skirt on the side of the opposite head of the piston, on bearings in the form of end supports, and the system | ГГ .П ;;. (I: fc i-j5fci iBJiA ma lubrication-cooling is equipped with an inlet channel, made in the connecting rod, characterized in that, in order to increase the cooling efficiency, the inner part of the skirt is made in the form of a cylindrical in-depth bob, connected with a cylindrical peripheral surface of the skirt with an annular rim with a flat upper surface, perpendicular to the axis of the piston and limited in its inner diameter with a shoulder centered in the recess of the piston head, with the head mounted with an emphasis on the flat 2. The piston in accordance with claim 1, characterized in that the central recess in the head has a dome shape. 3. The piston in claims 1 and 2, characterized in that at least two holes are made in the cylindrical peripheral part of the skirt for mounting the piston pin and accessing the installation pins of the head and the piston skirt. 4. The piston of claims 1-3, characterized in that the lubrication-cooling system is provided with a groove made in the deepening of the piston pin perpendicular angles to its longitudinal axis and symmetrically relative to the transverse median plane containing the gudgeon pin and two extensions at the ends in the form of an isosceles trapezoid disposed in the longitudinally-axial vertical plane of the gudgeon pin, wherein ditches
    公开号:SU1102490A3
    申请号:SU813285551
    申请日:1981-05-20
    公开日:1984-07-07
    发明作者:Мюно Бернар；Тавен Эрик
    申请人:Сосьете Дъэтюд Де Машин Термик С.Е.М.Т. (Фирма)；
    IPC主号:
    专利说明:

    ka is connected with the connecting rod connecting channel, which leads to the end surface of its upper head.
    5. Piston on PP. 1-4, characterized in that the lubrication-cooling system is provided with two inclined canals and annular grooves made respectively in the central part of the piston pin and in the zone of the end supports, the inclined canals being made to exit from one side to the inclined planes of the trapezoidal expansions of the groove other side in the annular grooves at the end supports.
    6. Piston in PP, 1-5, characterized in that the lubrication-cooling system is equipped with two
    channels made respectively in the piston pin and the skirt boss
    a piston, a groove in a piston finger along its forming and arc-shaped groove on the inner surface of a semicircular pillow, the channel in the finger being connected to one side of the piston cooling chamber by means of a groove, arc-shaped groove and a channel in a bobian1, connected in series and with another the sides - with the inlet channel in the connecting rod through the groove in the finger.
    7. The piston of PP, 1-6, from the L and the fact that it is equipped with stiffening ribs located between the annular rim of the central boss and the cylindrical peripheral part of the piston.
    The invention relates to mechanical engineering, namely engine building, and can be used in internal combustion engine eigaters.
    A piston for a reciprocating piston machine is known, preferably for an internal combustion engine, made integral and comprising a head, a skirt with an inner central part and a lubrication-cooling system, the shafts and the skirt being connected to each other by means of pins through holes in the peripheral surface of the skirt of the gunplate and fixed in the partially threaded blind holes of the head, and form a cooling chamber made in the form of central recesses in the end surfaces of the head and the ki in the place of their joint, and articulated (piston) with a rod. With a finger, having in the middle part a recess under the top head of the connecting rod and connected to the head with at least one pin installed in a slot made in the form of a semicircular pillow in the central part skirts on the side of the opposite head of the piston, on subtypes in the form of end supports, and the lubrication-cooling system, the day is equipped with a feed channel, made in the connecting rod 1.
    However, the head and the piston skirt are assembled at a relatively remote area from the periphery of the head, due to which there is no sufficient cooling and distribution of loads between the head and the piston skirt, namely at the periphery, i.e. at the level of piston rings.
    The aim of the invention is to increase the cooling efficiency.
    The goal is achieved by the fact that in a piston for a machine with reciprocating pistons, mainly for an internal combustion engine, is made integral and comprises a head, a skirt with an inner central part and a lubrication-cooling system, the head and the skirt being interconnected by pins passing through the holes in the peripheral surface of the piston skirt and fixed in the partially threaded blind holes of the head, and form a cooling chamber, made in the form of central recesses in the end new surfaces of the head and skirt together of their joint, and articulated (piston) with the connecting rod with a finger, having in the middle part a recess for 31 connecting rod heads and connected to the head with POM1TSI at least one pin in the form a semi-circular cushion in the central part of the skirt on the side of the opposite head of the piston, on bearings in the form of end supports, and the cooling lubrication system is equipped with an inlet channel made in a connecting rod; the inner part: the skirt is made in the form of a cylindrical tube a deep boss connected to the cylindrical circumferential surface of the skirt with an annular rim with a flat top surface, perpendicular to the axis of the piston with limited inner diameter with the help of a shoulder centered at the head of the piston head, with the head mounted with an emphasis on the flat surface of the rim, and the recess of the boss is provided with internal radial ribs. In addition, the central recess in the head has the shape of a dome. In the cylindrical peripheral part of the skirt can be made. At least two holes for the installation of the piston pin and access to the installation pins of the head and the piston skirt Lubrication-cooling system - can be provided with a groove made in the recess of the piston pin perpendicular to its longitudinal axis and symmetrically with respect to the transverse median plane of the piston pin and containing two extensions at the ends in the form of an isosceles trapezium located in the longitudinal-vertical axial plane of the piston pin This means that the groove is connected to the connecting-rod feed channel, which extends onto the end surface of its upper head. The lubrication-cooling system can be equipped with two inclined channels and annular grooves made respectively in the central part of the piston pin and in the zone of the end supports, with the inclined channels exiting from one side to the inclined planes of the trapezoidal extensions of the groove and from the other side to the annular grooves at the end supports. The lubrication-cooling system can be equipped with two channels, made respectively in the piston ring and the piston skirt boss, with a groove in the piston pin along its core and an arc-like groove on the inner surface of the semicircular pillow, the channel in the pin being connected to the cooling chamber on one side with assistance, groove, arc-shaped groove and channel in a bob-ke, connected in series, and on the other hand with the feed channel in the connecting rod through the groove in the finger. The piston may be provided with stiffening ribs located between the annular rim of the central bob and the cylindrical peripheral part of the piston. FIG. 1 shows a piston, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3-section BB in FIG. one; in fig. 4 shows a section B-B in FIG. 1. The piston 1 is made of two parts, forming respectively the head 2 and the skirt 3 of the piston, which have a cylindrical shape and are installed coaxially. In the cylindrical peripheral surface of the head 2 of the pistons there are made several parallel separated grooves 4 in which piston rings (not shown) are installed. Therefore, all piston rings are installed in the piston head 2. The end surface of the piston head 2 has a central recess 5, which forms the first part of the cooling chamber, which has the preferred dome shape, which, by virtue of the piston head 2, acts like a self-drying arch, the strength of which, Bbmie, than the larger load, and bounding the flat annular peripheral the contact surface 6 of the head 2 and the skirt 3. The central recess 5 is provided with several blind holes 7 with a flat or spherical bottom to increase the volume of the main cooling chamber of the hottest points of the head. The inner part of the skirt is made in the form of a central recessed boss 8, which has a central recess 9 forming the second part of the cooling chamber and provided with several radial fins 10 that distribute the loads from the piston head. The central boss 8 is connected to the cylindrical peripheral surface 11 of the piston skirt 3 by an annular rim 12 with a flat upper surface, perpendicular to the axis of the piston and limited by the inner diameter of the shoulder 13 with the installed annular gasket 14. The head connection 2; i skirt 3 is realized with the help of pins 15, and the installation of the head on the skirt in a certain position is carried out with the help of the pin 16. Each pin 15 passes through the opening 17 in the mouth of the housing 12, is fixed in the rifled part of the opening 18 in the piston head and is blocked 19. In order to improve the assembly conditions, the cylindrical peripheral part of the skirt is equipped with two holes 20, the end face of the central leg 8 has a recess 21 in the shape of a semicircular pillow, ending at the ends with bearings 22. Piston) finger 23 is mounted in the pillow 21, resting on The bearing 22, in its middle part, has a recess 24 into which the free end of the upper head of the connecting rod 25 is connected, which is connected to the finger with at least one pin 2 each of which passes through from version 27, made in the top Rod rod, and enters 28 holes in the hole. Nut 29 provides locking pin. The lubrication-cooling system contains a supply channel 30, made in the connecting rod and extending into the groove 31, made in the recess of the finger perpendicular to its longitudinal axis and symmetrically relative to the transverse median plane. At the end of the groove 31, extensions 32 are formed in the form of an isosceles trapezium. The inclined flat surfaces of the extensions 32 allow two symmetric inclined channels 3 to be drilled, each of which extends into the annular groove 34 at the ends of the finger in front of the bearings 22. The groove 31 communicates with the cooling chamber through two channels 35 and 36. The channel 35 passes through the piston pin 23 and exits 37 groove in the finger. The channel 36 passes through the central boss 8 of the skirt, the piston and goes into the arcuate groove 38 on the inner surface of the pillow. The holes 39 in the boss 8 serve to drain the oil into the crankcase. ; The rim 12 of the central bob 8 has at least one hole 40 extending into a blind hole 41 connected by a channel 42 to the groove of the oil wiper ring. In addition, in order to further increase the rigidity of the piston, ribs are provided at the level of the cylindrical peripheral surface 11. 43 stiffness, allowing better transfer of rim loads in the direction of the piston pin. When the engine is running, the cooling oil flows through the channel in the connecting rod into the cooling chamber in the piston head, the more heated parts of the structure are cooled, and through channels 39. merged into the crankcase. In addition, the presence of inclined channels 33 and grooves 37 allows lubricating the rubbing surfaces of the finger and the central bob. As the lubricant cooling system is increased, the strength of the piston does not decrease due to the presence of stiffeners 10 and 43 in the recess of the boss and between the peripheral part of the skirt and the bob and the annular rim. The finger 23 is in contact with the upper bottom of the cushion 21, so that the pressure forces are evenly distributed along the axis. During piston lifting, the piston pin 23 rests on the lower part of the annular bearings 22. The studs 26 assemble the upper head of the connecting rod and the piston pin 23 and have the ability of longitudinal elastic deformation. Thus, this piston design allows an increase in the lubrication-cooling system, which will significantly increase the cooling efficiency of the structure while creating its strength.
    Y-
    AA

    //
    /
    2O
    55
    FIG.
    45
    15
    4e
    15
    FIG.
    权利要求:
    Claims (7)
    [1]
    1. PISTON FOR A MACHINE WITH RETURN-PASSING PISTON MOVEMENT, PREFERRED FOR THE INTERNAL COMBUSTION ENGINE, made integral and containing a head, a skirt with an internal central part and a lubrication-cooling system, the head and skirt being connected through holes with the help of which in the peripheral surface of the piston skirt and fixed in partially threaded blind holes of the head, and form a cooling chamber made in the form of central recesses in the end surfaces of the head and skirt in place x joint, and articulated · (piston) with a connecting rod with a finger, which in the middle part has an indentation under the upper connecting rod head and connected to the head with at least one pin mounted in the socket, made in the form of a semicircular pillow in the center : the real part of the skirt from the side of the opposite piston head, on bearings in the form of end bearings, and the lubrication-cooling system is equipped with an inlet channel made in the connecting rod, characterized in that, in order to increase cooling efficiency, the inner part of the skirt made in the form of a cylindrical recessed boss connected with the cylindrical peripheral surface of the skirt using an annular, rim with a flat upper surface perpendicular to the axis of the piston and bounded in inner diameter by a shoulder centered in the recess of the piston head, the head being mounted with emphasis on a flat surface rim, and the recess of the boss is equipped with internal radial ribs.
    [2]
    2. The piston according to claim 1, characterized in that the central recess in the head has a dome shape.
    [3]
    3. The piston according to claims 1 and 2, characterized in that at least two holes are made in the cylindrical peripheral part of the skirt for installing the piston pin and access to the mounting pins of the piston head and skirt.
    [4]
    4. The piston according to paragraphs. 1-3, characterized in that the lubrication-cooling system is provided with a groove made in the recess of the piston pin perpendicular to its longitudinal axis and symmetrically with respect to the transverse median plane of the piston pin and containing two extensions at the ends in the form of an isosceles trapezoid located in the longitudinal vertical axial plane of the piston pin, and the groove 8 , SU 1102490 ka is connected to the connecting channel of the connecting rod, which extends to the end surface of its upper head. '
    [5]
    5. The piston according to paragraphs. 1-4, characterized in that the lubrication-cooling system is equipped with two inclined channels and annular grooves, respectively made in the Central part of the piston pin and in the area of the end supports, and the inclined channels are made with the exit on one side to the inclined plane of the trapezoidal groove extensions and the other side into the annular grooves at the end supports.
    [6]
    6. The piston according to claims 1-5, characterized in that the lubrication-cooling system is equipped with two: channels made respectively in the piston pin and the boss of the skirt: piston, a groove in the piston pin along its generatrix and an arcuate groove on the inner surface of the semicircular pillow moreover, the channel in the finger is connected to one side with the piston cooling chamber by means of a groove, an arcuate groove and the channel in the boss connected in series, and on the other hand, with the supply channel in the connecting rod through the groove in the finger.
    [7]
    7. The piston is ποππ, Ι-6, o'clocked in that it is equipped with stiffeners located between the annular rim of the central boss and the cylindrical peripheral part of the piston.
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    引用文献:
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    JPS5447937A|1977-09-24|1979-04-16|Izumi Jidoushiya Kougiyou Kk|Builttup piston for cooling|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8012148A|FR2483521B1|1980-05-30|1980-05-30|
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