Technical Field
The present invention relates to an internal combustion engine component, in particular to a kind of internal-combustion engine oil pump.
Background Art
Internal-combustion engine oil pump is the oil pump is the engine oil in the lubricating system of the power source of the pressure and flow rate, the required guarantee of the internal combustion engine lubricating oil pressure and flow; from the structure of the existing oil pump in to the gear-type, rotor-type, vane type and plunger-type, the oil pump, however, are on the same principle; prior of the internal combustion engine oil pump generally includes a pump shell and the pump cover, the pump shell is provided with a cavity, an oil outlet cavity and with the corresponding oil passage, is formed in the area of cavity, an oil outlet cavity to form a high pressure region, the engine oil in the oil pan to the oil filter and the lubricating oil passage, in order to lubricate the main moving parts of the internal-combustion engine, and the oil by filtration; shift to end surface of the pump shell and the pump cover, in order to seal the cavity of the functions of the pump; however, this kind of sealing mode is not ideal, in particular for the low-pressure region of the cavity, because there is no special pump for sealing the structure of the cavity, the air in the oil chamber is sucked, not only caused the engine oil pressure is insufficient, the conveying influence, and that the oil-air and oil foaming and reduce the quality of lubrication, direct weaken the overall performance of the internal combustion engine, in particular to shorten the service life of the internal combustion engine and reducing the energy-saving effect.
Therefore, in order to solve the problems, requires a kind of internal-combustion engine oil pump, the pump housing is provided with a special structure for sealing the cavity, effectively prevent the air from being sucked into the oil inlet in the lumen, avoiding insufficient oil pressure and oil foaming, ensure that oil smoothly transport and the quality of lubrication, so as to enhance the overall performance of the of the internal-combustion engine, the service life of the internal-combustion engine is prolonged, improve the energy-saving effect.
Content of the invention
In view of this, the purpose of this invention is to provide a kind of internal-combustion engine oil pump, the pump housing is provided with a special structure for sealing the cavity, effectively prevent the air from being sucked into the oil inlet in the lumen, avoiding insufficient oil pressure and oil foaming, ensure that oil smoothly transport and the quality of lubrication, so as to enhance the overall performance of the of the internal-combustion engine, the service life of the internal-combustion engine is prolonged, improve the energy-saving effect.
The oil pump of the internal combustion engine of this invention, including of the pump housing is provided with a cavity, is also provided with a on the pump casing the seal groove for sealing the cavity.
Furthermore, also on the pump casing is provided with an oil outlet and the cavity is communicated with the oil outlet I of, the sealing grooves I with the cavity through the fill is communicated with high-pressure oil in order to realize the oil-sealed oil groove.
Furthermore, on the pump casing I is also provided with a cavity which is communicated with cavity II, the two ends of the seal groove respectively connected with the outlet oil chamber I and II and the cavity is communicated with the oil inlet cavity in which the tolerance.
Furthermore, the internal-combustion engine oil pump also includes being used for pressure relief of the pressure limiting assembly, the time limits the oil pressure exceeds the preset value and that the oil-pressure assembly from the outlet oil chamber I or II and carries on the backflow pressure cavity.
Furthermore, the oil inlet chamber comprising an inlet chamber II and I cavity, the cavity cavity I and II are mutually independent and are connected to the oil pan; the cavity is communicated with cavity II and II, the limiting assembly includes the cavity II and II is communicated with cavity of the pressure limiting valve at the, time the oil pressure exceeds the preset value and that the oil pressure the movement of the valve core from cavity to cavity II II.
Furthermore, the limiting assembly further includes a pressure-limiting plug and a pressure limiting spring, the limit pressure spring is sleeved on the outer side of the plug limiting pressure spiral the way and in order to produce the pre-tightening force against the pressure limiting valve in the communicating part of the main oil passage and the oil return port.
Furthermore, the internal-combustion engine oil pump also includes a detachable way is connected with the pump casing and the pump cover, the turnover pressure combined sealing the sealing groove.
Furthermore, for are arranged on the pump casing is connected with the connecting hole of the pump cover, the connecting is provided in the outer side of the sealing groove.
Furthermore, the internal-combustion engine oil pump further includes an inner rotor and an outer rotor, the inner rotor and the outer rotor is engaged with and through the eccentrically arranged conjugate tooth to form a plurality of volume chambers, corresponding to the pump casing from the inner rotor and the outer rotor I is engaging cavity, corresponding to the inner rotor and the outer rotor I is provided with an oil outlet cavity are aligned.
Furthermore, the inner rotor is provided with nine teeth, is provided with ten internal teeth of the outer rotor.
The beneficial effect of the invention: the invention of the internal combustion engine oil pump, the pump housing is provided with a special seal for sealing the cavity, the seal groove can be by the oil seal, a sealing ring is arranged, and the like or water seal to effectively prevent air from being sucked in oil inlet cavity, to avoid insufficient oil pressure and oil foaming, ensure that oil smoothly transport and the quality of lubrication, so as to enhance the overall performance of the of the internal-combustion engine, the service life of the internal-combustion engine is prolonged, improve the energy-saving effect.
Description of drawings
The embodiment of Figure and with the further description of this invention:
Figure 1 is a structure diagram of the invention.
Mode of execution
Figure 1 is a structure diagram, as shown in Figure of the invention is shown in: the embodiment of the internal combustion engine oil pump, which comprises of the pump housing is provided with a cavity 1, the pump body 1 is also provided with a seal groove for sealing the cavity 2 ; the internal-combustion engine oil pump also includes in removable manner with the pump body 1 of the pump cover 3, the turnover 3 pressure combined sealing the sealing groove 2 ; a seal groove 2 is formed, preferably by casting; the pump shell 1 is provided with a special seal for sealing of the cavity 2, the seal groove 2 can be by the oil seal, a sealing ring is arranged, and the like or water seal to effectively prevent air from being sucked in oil inlet cavity, to avoid insufficient oil pressure and oil foaming, ensure that oil smoothly transport and the quality of lubrication, so as to enhance the overall performance of the of the internal-combustion engine, the service life of the internal-combustion engine is prolonged, improve the energy-saving effect.
In this embodiment, the pump body 1 is also provided with an oil outlet 4 and with the oil outlet port 4 is communicated with cavity of the I 51, the sealing groove 2 with the outlet oil chamber I 51 is communicated with the high pressure engine oil through the fill in order to realize the oil-sealed oil groove; the oil groove through the filling oil in order to make the oil inlet chamber to separate air, its good sealing performance, can effectively sequester the air; engine oil through the oil outlet port 4 a lubrication site is delivered to the internal combustion engine; outlet oil chamber I 51 for pumping oil of the high-pressure area; the structure is capable of realizing self-sealing internal-combustion engine oil pump, that is, the seal groove 2 in the internal combustion engine system in the isolation medium is lubricating oil, the oil supply and the sealing at the same time, by the use of the sealing ring does not exist the problems of abrasion caused by the, high pressure oil bridging the pump casing 1 and pump cover 3 a very small gap between the end surfaces, the sealing result is obvious.
In this embodiment, the pump body 1 is also provided with outlet oil chamber I 51 of II 52 is communicated with the cavity, the sealing groove 2 respectively connected with the two ends of outlet oil chamber I 51 and the fuel outlet cavity II 52 is communicated with the oil inlet cavity and wherein the; seal groove 2 located at one end of the cavity opening I 51, located at the other end of the cavity opening II 52, is connected with the outlet oil chamber I 51 is formed with an oil chamber II 52 of the channel; the fuel outlet cavity II 52 I 51 can be that a part of the, I 51 can also be independent of the cavity, the cavity of the embodiment of I 51 II 52 and an oil chamber is arranged between the suction mechanism used for positioning the locating block, the positioning block I 51 is arranged in the oil chamber is communicated with an oil chamber II 52 of the channel; sealing engagement means 2 are arranged in parallel with the part of the outer side of the cavity, in order to fully isolate the air.
In this embodiment, the internal-combustion engine oil pump also includes being used for pressure relief of the pressure limiting assembly 7, the time limits the oil pressure exceeds the preset value the pressure assembly 7 movements and so that the oil from the oil outlet chamber I 51 or the fuel outlet cavity II 52 and carries on the backflow pressure relief; using the pressure limiting assembly 7 to the internal-combustion engine oil pump setting a voltage limiting, when the outlet oil chamber I 51 when the pressure exceeds the preset value, the pressure limiting assembly 7 is of the automatic balancing device, play the role of the automatic overflow pressure, avoid the pumped-out pressure is too high and damage the analyzing, oil pipe, the phenomenon of the oil seal, the annex.
In this embodiment, the oil inlet chamber comprising an inlet chamber I 61 and cavity II 62, the oil inlet chamber I 61 and cavity II 62 are mutually independent and are connected to the oil pan; the cavity II 62 and outlet oil chamber II 52 is connected with, said voltage limiting assembly 7 comprises II 62 in the cavity II 52 and an oil chamber of the pressure limiting valve connecting, the time limits the oil pressure exceeds the preset value and that the oil pressure the movement of the valve core II 52 from the cavity II 62 flow back to the cavity; an oil inlet cavity II 62 used for oil return, I 61 with the oil inlet cavity to avoid interference; in this embodiment, the limiting assembly 7 also includes a pressure limiting plug and a pressure limiting spring, the limit pressure spring is sleeved on the outer side of the plug limiting pressure spiral the way and in order to produce the pre-tightening force against the pressure limiting valve in the communicating part of the main oil passage and the oil return port.
In this embodiment, the pump body 1 is provided with a for the pump cover 3 is connected with the connecting hole 11, the connecting holes 11 are arranged on the sealing groove 2 on the outer side of the; pump cover 3 is also provided with a corresponding connection hole 11, the connecting piece 8 through the connecting hole 11 of the pump casing 1 and pump cover 3 are fixed together; the connecting piece 8 is preferably a fastening bolt, the assembly and disassembly, replacement, the connecting hole 11 to screw hole; connecting hole 11 are arranged on the sealing groove 2 on the outer side of, the pump body 1 on the basis of the compact structure of the seal groove 2 of the sealing; connecting hole 11 is preferably six, and arbitrary three connecting holes 11 triangular connecting structure can be formed, reinforced connecting tightness.
In this embodiment, the internal-combustion engine oil pump also includes an inner rotor 91 and the outer rotor 92, the inner rotor 91 and the outer rotor 92 and the eccentrically arranged through conjugate tooth engagement to form a plurality of volume chambers, the pump body 1 corresponding to the inner rotor 91 and the outer rotor 92 from cavity I 61 is aligned, corresponding to the inner rotor 91 and the outer rotor 92 is I 51 into the engaging position of the oil outlet cavity; the internal-combustion engine oil pump a rotor type structure, has the advantages of small size, light weight, large suction vacuum, oil supply good uniformity, and the like, in particular to, a small internal combustion engine; the inner rotor 91 is used for transmission is connected to the internal combustion engine crankshaft or camshaft circular square hole; preferably, the inner rotor 91 and the outer rotor 92 is the eccentric structure, and their contour of the working face is a pair of conjugate curve, are engaged with each other not only when the interference is not separated from the.
In this embodiment, the inner rotor 91 is provided with nine teeth, the outer rotor 92 is provided with ten internal teeth; the structure, can produce ten circulation varying volume chambers, oil supply volume is large, uniform oil feeding, can meet the requirements of the working pressure of the intake air of internal-combustion engine.
Finally note that, the above-mentioned embodiment in order to illustrate the technical scheme of the invention and non-limiting, although with reference to the preferred embodiments of a detailed explanation of the invention, the ordinary technical personnel in this field should be understood, the technical scheme of this invention for equivalent modification or replacement, and can not be separated from the technical scheme of the invention the purpose and scope of, its should be covered in this invention, the scope of the claim.
Engine oil pump of internal combustion engine
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