Engine structural unit comprising base part and support, method of its installation, base part for engine structural unit and method of its manufacturing

FIELD: engines.

SUBSTANCE: invention may be used in internal combustion engines. Engine structural unit consists of base part (1), shaft (2), as well as at least one support (3). Support (3) has shaft (2) arrangement hole (4). Support (3) is fixed on base part (1) using fixing means (5). In assembled state shaft (2) rests on base part (1) with possibility of rotation. In contact area (6) of support (3) and base part (1) at least one engagement element (7) engages in response element area (8). Response element area (8) has, at least, one recess edge (9) made in form of line, or line within recess surface (9), preferably in slot recess (9). Response element area (8) and at least one engagement element (7) are made so, that support (3) and base part (1) in assembled state and without mounting of fixing means (5), at least, along said line does not form geometric closure. Engagement element (7) and/or response element area (8) are made with possibility of elastic and/or plastic deformation during installation. Disclosed are shaft assembly method on base portion, structure unit basic part and method of base portion making.

EFFECT: technical result consists in simplification of manufacturing and in reduction of surfaces tolerances sizes required for connection of bearing support with base portion.

15 cl, 10 dwg

 



 

Same patents:

FIELD: engines and pumps.

SUBSTANCE: control module comprises cylinder head cover (10) and camshaft (14), particularly, spline shaft with cam (16, 17) fitted on camshaft (14). Cylinder head cover (10) incorporates split support (12) for fitting the camshaft (14) in place with support basic part (28) and support cover (30) that make the support bore with inside radial support surface (32). Cam (16, 17) has support element (26) arranged in support (12) radially between camshaft (14) and support surface (32). Invention covers also the control module assembly procedure.

EFFECT: simplified assembly, possibility to vary cam lift.

15 cl, 2 dwg

FIELD: power engineering.

SUBSTANCE: two-stroke piston diesel engine comprises a cylinder with blowdown windows, a piston installed in it with a steam, a cylinder lid with one outlet valve and one or two nozzles installed in it. A steel insert is installed (pressed) in the cylinder lid with end ledges in the form of a ring with tangential slots, forming channels that connect the zone of displacement of air volume limited between the outer diameter of the insert ring and the cylinder diameter and flat sections of the insert and the bottom of the piston with the combustion chamber, and the vector of speeds has identical direction, the insert ring enters the cylindrical part of the groove in the piston bottom with the piston position in the upper dead point. The rounded edge is made from heat-resistant steel pressed in the bottom of the piston in the form of a ring or is coated with fire-resistant steel, for instance, by the method of plasma sputtering.

EFFECT: increased capacity, improved environmental parameters.

2 cl, 2 dwg

FIELD: metallurgy.

SUBSTANCE: cast iron alloy with flaked graphite contains, wt %: 2.80-3.60 carbon, 1.00-1.70 silicon, 0.10-1.20 manganese, 0.03-0.15 sulfur, 0.05-0.30 chrome, 0.05-0.30 molybdenum, 0.05-0.20 tin, iron and regular contaminant admixtures - balance.

EFFECT: improved heat conductivity, tensile strength, reduced probability of fatigue crack appearance, providing for increased durability.

10 cl, 1 dwg, 1 tbl, 4 ex

FIELD: engines and pumps.

SUBSTANCE: bimetallic bottom of internal combustion engine (ICE) cylinder head includes body of cylinder head (1) with cast-iron insert (2). Hemispherical cavities (3) located along concentrical circles are provided in insert (2), between edge of insert and valve holes, in upper interface plane of insert (2) and body of cylinder head (1).

EFFECT: reducing thermal movements and improving the design reliability.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: exhaust device comprises cylinder head block 10 with exhaust channels 12. Each first end 14 of every channel is communicated with combustion chamber 16 while second ends enters air collector chamber 20 of exhaust manifold 22 integrated into cylinder head block. In compliance with this invention, said air collector chamber 20 is arranged in element 26 arranged inside cylinder head 10. Note here that said plug-in element 26 is thermally isolated from cylinder block 10 by thermal isolation means 28. Plug-in element 26 is made up of tubular insert 26 with orifices 34 and outlet channel 24 fitted in cylinder head block inlet 32. Orifice 24 communicated with exhaust channel second ends 18 while inlet channel 24 extends beyond cylinder head 10. The inlet channel (24) is communicated with the exhaust gases cleaning device.

EFFECT: efficient off-gas cleaning, thermal isolation of manifold from cylinder head block.

7 cl, 1 dwg

FIELD: machine building.

SUBSTANCE: head of cylinder block consists of case of cylinder block head, of case of cam shaft set on case of cylinder block head and of cover of cam shafts assembled on case of cam shafts. The case of the cam shafts has through orifices wherein there are installed bolts for fixing the case of the cam shafts together with the cover of the cam shafts to the case of the cylinder block head at engine assembly. Internal threads are made on internal surfaces of through orifices correspondingly. At treatment of orifices for the cam shafts before assembly of the engine the second bolts of bigger diametre, than the first bolts, are temporarily screwed into internal thread of through orifices for fixing the cover of the cam shafts to the case of the cam shafts.

EFFECT: simplified process of making orifices for cam shafts.

3 cl, 5 dwg

Cylinder head // 2397349

FIELD: engines and pumps.

SUBSTANCE: proposed cylinder head comprises: section of lower support wall, section of outer peripheral wall that sets inner chamber accommodating valves opening and closing combustion chamber, rockets, camshaft to drive rockers and rocker shaft, section of lengthwise wall running along camshaft inside aforesaid chamber, crosswise wall section with one end made integral with lengthwise wall section, camshaft backup section arranged on crosswise wall section, rocker shaft backup section arranged on crosswise section wall so that rocker shaft position in height from lower wall section is shifted from camshaft position in height from lower wall section, and section of sleeves receiving cylinder bolts arranged on lower wall section to overlap crosswise wall section in height. Crosswise wall section comprises transition section through which cylinder head attachment bolt passes into bolt sleeve to overlap section of aforesaid sleeves in height.

EFFECT: higher rigidity and decreased weight of head.

4 cl, 6 dwg

Head of cylinders // 2391527

FIELD: engines and pumps.

SUBSTANCE: head of cylinders includes the following: section of lower support wall, section of external peripheral wall having the space inside itself, section of longitudinal wall, which passes and has in that cavity the inlet side where the outlet distributing shaft is located, the first sections of transverse walls, which are located on the inlet side, on which there are support sections for supporting the inlet distributing shaft on them, the second sections of transverse walls, which are located on the inlet side, on which there formed are the second support sections for supporting drive units of controlled valves on them, sections of transverse walls, which are located on the outlet side, on which there formed are support sections for supporting outlet distributing shaft on them. The second sections of transverse walls are located below the first sections of transverse walls in direction as to height from section of lower support wall. Sections of transverse walls of the outlet side are located above the second sections of transverse walls in direction as to height. Upper end surface of section of lower wall, which is located on outlet side, is located above the upper end surface of section of lower wall, which is located on inlet side in direction as to height.

EFFECT: increasing rigidity of inlet side and outlet side and maintaining rigidity balance between them.

3 cl, 6 dwg

FIELD: mechanical engineering; diesel engines.

SUBSTANCE: cylinder head of diesel engine contains housing, intake and outlet holes with valve seats with fitted-in valves with bridge in between, nozzle cup installing the nozzle arranged in housing, and thermocompensating slots for compensating deformations at heating and cooling. Said slots are straight-line through ones, being arranged close to nozzle hole square to fire bottom. Said thermocompensating slots in normal section are rectangular, one of smaller sides of rectangle pointed to nozzle is rounded off. Depth of thermocompensating slots does not exceed 3.5-5 mm, and their width is 1 mm. Invention reduces thermofatigue stresses in bridge area by 50% and prevents accumulation of residual stresses. Implementing of process does not required complex tooling and rigging.

EFFECT: increased service life of cylinder head, reduced time taken for implementing the process.

4 dwg

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: proposed cylinder block of liquid-cooled internal combustion engine contains walls forming cylinder spaces made in form of plate members united in upper part by ring projections with support and centering surfaces for mounting cylinder liners. Compensating cavities of depth equal to 1.0-1.5 mm and width equal to width of support surface are made in ring projections from side of support surfaces. Orientation and extension of compensating cavities in cylinder block are determined by chord 1 of arc of circumference with radius R equal to radius of centering surface of ring projection, and central angle α equal to 35°-45° related by l=2R sin α/2, chord being parallel to axis of crankshaft.

EFFECT: increased wear resistance of parts of cylinder-piston group of engines, reduced specific fuel consumption and oil burning loss.

17 cl

FIELD: engines and pumps.

SUBSTANCE: control module comprises cylinder head cover (10) and camshaft (14), particularly, spline shaft with cam (16, 17) fitted on camshaft (14). Cylinder head cover (10) incorporates split support (12) for fitting the camshaft (14) in place with support basic part (28) and support cover (30) that make the support bore with inside radial support surface (32). Cam (16, 17) has support element (26) arranged in support (12) radially between camshaft (14) and support surface (32). Invention covers also the control module assembly procedure.

EFFECT: simplified assembly, possibility to vary cam lift.

15 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: invention can be used in internal combustion engines. Proposed drive comprises main camshaft 1, fixed cam 6 axially shifting on said main camshaft 1, second fixed cam 11 axially shifting on said main camshaft 1 and sensor unit 7. First cam 6 comprises first gear 9 of impulse sensor. Second cam 11 comprises second gear 10 of impulse sensor. Third gear 8 of impulse sensor is fixed completely on said main camshaft 1.

EFFECT: higher reliability of cam axial position and camshaft radial position.

10 cl, 6 dwg

Ice valve lifter // 2513215

FIELD: engines and pumps.

SUBSTANCE: invention can be used in internal combustion engines. ICE valve lifter comprises camshaft (5) with rotary axle (5a), first assembly (16) with first contact means (9) to engage with camshaft (5) guide surface. Said first assembly (16) can be lifted when first contact means (9) gets in contact with extending part of guide surface (6). Displacement drive can convert upward motion of assembly (16) to lift at least one ICE valve (3). Proposed device comprises adjuster (20-22) to ensure rectilinear motion of first assembly (16), hence, first contact means (9) in the plane perpendicular to camshaft rotary axle (5a) between first and second contact positions on guide shaft (6).

EFFECT: controlled valve open/close intervals.

10 cl, 7 dwg

FIELD: machine building.

SUBSTANCE: friction part in lubricating medium is designed for operation at contact pressure exceeding 200 MPa. Part surface is textured and before or after texturing it undergoes face-hardening treatment for reduction of part surface friction coefficient. The surface has periodic chain of micro-metre type cavities, the largest length of which amounts from 5 to 500 microns and period is less than half of width of contacting surface.

EFFECT: depth of the said cavities is less or equal to 3 microns that allows shifting to elastic-hydrodynamic lubrication mode.

17 cl, 4 dwg, 3 ex

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine cylinder block head is furnished with rocker actuators. Camshafts are arranged so that rockers and cams stay in contact. Camshafts are fixed to allow running in lower bearings and in upper bearings that are made integral with cylinder block head cover. Cylinder block head cover has visual observation ports to allow discern rockers or cams when cylinder block head cover is fixed on cylinder block head. Note here that every upper bearing has semi-circular section to hold camshaft journal. At least one portion of upper bearings is such that at least upper section of semi-circular section of upper bearing is coupled with upper section of semi-circular section of adjacent upper bearing. Covers for aforesaid ports serve to close said ports and are arranged on cylinder block head cover.

EFFECT: ease of maintenance.

13 cl, 5 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to engine production. The proposed engine comprises two camshafts with two valves per one cylinder. Note here that one camshaft is arranged in the cylinder head to control intake valves, while the other camshaft is arranged in the cylinder block bottom to control exhaust valves.

EFFECT: higher engine power output.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to engine production. The proposed engine comprises two camshafts with two valves per one cylinder. Note here that one camshaft is arranged in the cylinder head to control intake valves, while the other camshaft is arranged in the cylinder block bottom to control exhaust valves.

EFFECT: higher engine power output.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine cylinder block head is furnished with rocker actuators. Camshafts are arranged so that rockers and cams stay in contact. Camshafts are fixed to allow running in lower bearings and in upper bearings that are made integral with cylinder block head cover. Cylinder block head cover has visual observation ports to allow discern rockers or cams when cylinder block head cover is fixed on cylinder block head. Note here that every upper bearing has semi-circular section to hold camshaft journal. At least one portion of upper bearings is such that at least upper section of semi-circular section of upper bearing is coupled with upper section of semi-circular section of adjacent upper bearing. Covers for aforesaid ports serve to close said ports and are arranged on cylinder block head cover.

EFFECT: ease of maintenance.

13 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: friction part in lubricating medium is designed for operation at contact pressure exceeding 200 MPa. Part surface is textured and before or after texturing it undergoes face-hardening treatment for reduction of part surface friction coefficient. The surface has periodic chain of micro-metre type cavities, the largest length of which amounts from 5 to 500 microns and period is less than half of width of contacting surface.

EFFECT: depth of the said cavities is less or equal to 3 microns that allows shifting to elastic-hydrodynamic lubrication mode.

17 cl, 4 dwg, 3 ex

Ice valve lifter // 2513215

FIELD: engines and pumps.

SUBSTANCE: invention can be used in internal combustion engines. ICE valve lifter comprises camshaft (5) with rotary axle (5a), first assembly (16) with first contact means (9) to engage with camshaft (5) guide surface. Said first assembly (16) can be lifted when first contact means (9) gets in contact with extending part of guide surface (6). Displacement drive can convert upward motion of assembly (16) to lift at least one ICE valve (3). Proposed device comprises adjuster (20-22) to ensure rectilinear motion of first assembly (16), hence, first contact means (9) in the plane perpendicular to camshaft rotary axle (5a) between first and second contact positions on guide shaft (6).

EFFECT: controlled valve open/close intervals.

10 cl, 7 dwg

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