CN114294071B - Full variable displacement oil pump of commercial car - Google Patents
Full variable displacement oil pump of commercial car Download PDFInfo
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- CN114294071B CN114294071B CN202210015065.8A CN202210015065A CN114294071B CN 114294071 B CN114294071 B CN 114294071B CN 202210015065 A CN202210015065 A CN 202210015065A CN 114294071 B CN114294071 B CN 114294071B
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 22
- 239000003921 oil Substances 0.000 claims abstract description 128
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 239000010687 lubricating oil Substances 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 239000010705 motor oil Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Abstract
The invention provides a full-variable displacement oil pump for a commercial vehicle, which comprises a pump body, a pump cover, a variable slider, a driving shaft, a rotor and blades, wherein a proportional electromagnetic valve and a safety valve are installed on the pump body, and a large through hole and a rotor cavity are formed in the pump body; a crank gear is arranged in the large through hole and consists of a middle cylindrical part and an annular gear tooth part, the inner hole of the cylindrical part is used for connecting an engine crankshaft, an annular groove is arranged on the periphery of the cylindrical part, and a steel wire check ring with a notch is arranged in the annular groove; the large through hole is divided into a small hole section and a large hole section, and an annular step surface is formed between the small hole section and the large hole section; the variable sliding block, the driving shaft, the rotor and the blades are all installed in the rotor cavity, the pump cover is used for sealing the rotor cavity, the driving gear is installed after one end of the driving shaft penetrates out of the shaft hole of the pump cover, and the driving gear is meshed with the crankshaft gear. Therefore, the transmission ratio can be improved to more than 2, the rotating speed range of the engine oil pump is expanded, and the matching control of the electromagnetic valve is facilitated.
Description
Technical Field
The invention relates to the technical field of internal combustion engine lubricating systems, in particular to a full-variable displacement oil pump for a commercial vehicle.
Background
In the prior art, most diesel engines adopt a fixed-displacement rotor pump to provide lubrication for the engines, and a crankshaft of the engine is directly inserted into a shaft hole of an inner rotor to drive the fixed-displacement rotor pump to operate. The transmission ratio of the crankshaft direct drive mode is 1, and the maximum rotating speed of the diesel engine is only about 2000rpm, so that the rotating speed range is narrow, the electromagnetic valve is not favorable for adjusting and controlling the oil pump, and the power of the oil pump is difficult to be reduced to the maximum extent.
Disclosure of Invention
The invention aims to provide a full-variable displacement oil pump for a commercial vehicle, which can realize the displacement adjustment of the oil pump on the premise of not changing the structure of an engine crankshaft.
In order to solve the technical problems, the invention adopts the following technical scheme: a full-variable displacement oil pump for a commercial vehicle comprises a pump body, a pump cover, a variable slider, a driving shaft, a rotor, blades and a driving gear, wherein a large through hole and a rotor cavity are formed in the pump body; a crankshaft gear is arranged in the large through hole and consists of a middle cylindrical part and an annular gear tooth part, the inner hole of the cylindrical part is used for connecting an engine crankshaft, an annular groove is formed in the periphery of the cylindrical part, and a steel wire check ring with a notch is arranged in the annular groove; the large through hole is divided into a small hole section and a large hole section, an annular step surface is formed between the small hole section and the large hole section, the cylindrical part of the crankshaft gear and the steel wire check ring are inserted into the small hole section, and the steel wire check ring can deform due to elasticity of the steel wire check ring after entering the large hole section, so that a gap and the inner and outer diameters of the steel wire check ring are increased, and the step surface can block the steel wire check ring from axially moving into the small hole section; the variable sliding block, the driving shaft, the rotor and the blades are all arranged in the rotor cavity, the pump cover is used for sealing the rotor cavity, shaft holes for installing the driving shaft are respectively formed in the bottom of the rotor cavity and the pump cover, a driving gear is arranged at one end of the driving shaft after penetrating out of the shaft holes of the pump cover, and the driving gear is meshed with the crankshaft gear; the pump body is also provided with a proportional electromagnetic valve and a safety valve; and a cylinder body joint surface is arranged on one surface of the pump body, which is provided with the crankshaft gear and the driving gear.
According to the technical scheme, under the condition that the boundary of the pump body installation is not changed, the power of the engine crankshaft can be transmitted to the oil pump by adding the crankshaft gear and the driving gear, so that the transmission ratio can be improved to be more than 2, the rotating speed range of the oil pump is expanded, and the matching control of the electromagnetic valve and the maximum power saving of the oil pump are facilitated. And a steel wire retainer ring is arranged on the cylindrical part of the crankshaft gear, and a step surface is arranged in the large through hole, so that the crankshaft gear can be stably limited on the pump body before being arranged on an engine crankshaft, the phenomenon that the crankshaft gear falls out of the large through hole under the action of shaking and dead weight to influence the assembling machine when the oil pump assembly is in logistics transportation and the engine is assembled with an oil pump is prevented, and the rotation of the crankshaft gear cannot be influenced by the existence of the steel wire retainer ring after the assembling machine is finished.
In order to provide lubrication for the rotation of the crankshaft gear, an annular lubricating oil groove is further formed in the inner wall of the small hole section, and an inclined oil hole for communicating the pump outlet and the lubricating oil groove is further formed in the pump body.
Furthermore, a fuel injection hole is formed in the position, corresponding to the meshing position of the driving gear and the crankshaft gear, of the pump cover.
In one embodiment, the variable slider is a direct-push slider structure, a cavity for accommodating the rotor and the blades is arranged in the middle of the variable slider, a feedback cavity is formed between one end of the variable slider and the side wall of the rotor cavity of the pump body, a spring cavity is formed at the other end opposite to the feedback cavity, and notches are formed in the upper end surface and the lower end surface of the variable slider corresponding to the oil inlet area and the oil outlet area. Because the two sides of the variable sliding block are provided with the notches which are symmetrical up and down, the product forms a design of oil inlet and outlet at two sides, the efficiency of oil suction and oil discharge is improved, the risk of cavitation is reduced, the friction area between the blade and the sliding block is reduced, and the reduction of friction work is facilitated.
Furthermore, oil guide grooves communicated with the oil inlet area are respectively arranged on the upper end surface and the lower end surface of the variable sliding block corresponding to the front position of the feedback cavity. The oil guide groove is arranged to intercept high-pressure oil leaked from the end face of the variable sliding block and directly guide the high-pressure oil to the oil inlet area, so that the leaked high-pressure oil is prevented from entering the feedback cavity to influence variables.
Furthermore, an oil drainage groove communicated with the oil inlet area and the spring cavity is respectively arranged on the upper end surface and the lower end surface of the variable sliding block. This draining groove can in time arrange the pressure oil that reveals in the spring chamber from the terminal surface clearance and advance oily district, avoids causing unfavorable influence to the variable.
Furthermore, the positions of the intersection of the upper end surface and the lower end surface of the variable sliding block and the inner wall of the cavity, which correspond to the wide end oil sealing area and the narrow end oil sealing area, are respectively provided with an unloading groove. The unloading groove is used for communicating the wide end oil sealing area and the narrow end oil sealing area, so that the phenomenon of oil trapping can not occur in the two areas, pressure is released, and pressure fluctuation is reduced.
In one embodiment, a sealing groove for mounting a rectangular sealing strip is arranged at a position, close to the feedback cavity, of the variable slider, and an inclined oil groove is respectively arranged on the upper end surface and the lower end surface of the variable slider and is used for communicating the sealing groove with the oil discharge area. Because the high-pressure oil that oblique oil groove and oil discharge distinguished leads to, just so can compress tightly the rectangle sealing strip through the effect of oil pressure to isolated oil discharge district and feedback chamber.
Furthermore, the bottom surface of the pump body rotor cavity and the inner side surface of the pump cover are both provided with annular oil storage grooves surrounding the shaft hole and special-shaped small grooves for communicating the annular oil storage grooves with the oil discharge area; the pump comprises a pump body and a pump cover, wherein the pump body is provided with a shaft hole, the pump cover is provided with a shaft hole, the shaft hole is provided with a shaft hole bushing, the two ends of a driving shaft are in clearance fit with the shaft hole bushing, the outer side surface of the pump body is provided with a shaft sealing cover corresponding to the position of the shaft hole, a clearance is reserved between the end surface of one end of the driving shaft and the shaft sealing cover, and the driving shaft is provided with an axial central through hole. The special-shaped small groove is used for introducing high-pressure oil in an oil discharge area into the annular oil storage groove, then the high-pressure oil flows into a gap between two ends of the driving shaft and a shaft hole bushing, the shaft sealing cover is installed at a position, corresponding to a shaft hole, of the outer side face of the pump body, a gap exists between the end face of one end of the driving shaft and the shaft sealing cover, the driving shaft is provided with an axial central through hole, and therefore the high-pressure oil can flow towards the end of the driving gear through the central through hole of the driving shaft, and circulation of lubricating oil is formed.
Furthermore, a flow dividing block is arranged at an oil inlet of the pump body. The arrangement of the flow dividing block is beneficial to improving oil absorption noise.
Drawings
Fig. 1 is a schematic diagram of an overall explosion structure of an oil pump in an embodiment of the present invention;
FIG. 2 is a schematic diagram of an external structure of an oil pump according to an embodiment of the present disclosure;
FIG. 3 is a perspective view of a crank gear according to an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a pump body according to an embodiment of the present invention;
FIG. 5 is an enlarged view of the portion A in FIG. 4;
FIG. 6 is a schematic diagram of a variable slider structure in an embodiment of the present invention;
FIG. 7 is a right side view of FIG. 6;
FIG. 8 is a schematic perspective view of a variable slider according to an embodiment of the present invention;
the reference signs are:
10-pump body 20-pump cover 30-variable sliding block
40-drive shaft 50-rotor 60-blade
70-drive gear 80-crankshaft gear 90-annular oil groove
100-special-shaped small groove 11-large through hole 12-rotor cavity
13-proportional electromagnetic valve 14-safety valve 15-shaft sealing cover
16-flow dividing block 31-feedback cavity 32-spring cavity
33-gap 34-oil drainage groove 35-oil drainage groove
36-unloading groove 37-sealing groove 38-oblique oil groove
81-cylindrical portion 81 a-annular groove 82-wheel toothing.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention is further described below with reference to the following examples and the accompanying drawings, which are not intended to limit the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or interconnected between two elements, directly or indirectly through intervening media, and the specific meaning of the terms may be understood by those skilled in the art according to their specific situation.
The full-variable displacement oil pump for the commercial vehicle as shown in fig. 1 to 8 comprises a pump body 10, a pump cover 20, a variable slider 30, a driving shaft 40, a rotor 50, blades 60 and a driving gear 70, wherein a large through hole 11 and a rotor cavity 12 are formed in the pump body 10; a crank gear 80 is arranged in the large through hole 11, the crank gear 80 consists of a middle cylindrical part 81 and an annular gear tooth part 82, an inner hole of the cylindrical part 81 is provided with an inner spline for connecting an engine crankshaft, the outer periphery of the cylindrical part 81 is provided with an annular groove 81a, and a steel wire retaining ring 83 with a notch is arranged in the annular groove 81 a; the large through hole 11 is divided into a small hole section and a large hole section, an annular step surface is formed between the small hole section and the large hole section, the cylindrical part 81 of the crankshaft gear 80 and the steel wire retainer ring 83 are inserted into the small hole section, the steel wire retainer ring 83 deforms due to elasticity of the steel wire retainer ring 83 after entering the large hole section, so that the gap and the inner and outer diameters of the steel wire retainer ring 83 are enlarged, the step surface can block the steel wire retainer ring 83 from axially moving into the small hole section, and the crankshaft gear 80 is hidden in fig. 4 in order to facilitate the position relation between the steel wire retainer ring 83 and the large through hole 11 to be seen, so that the steel wire retainer ring 83 can be seen to be positioned in the middle of the large through hole 11; in order to lubricate the rotation of the crank gear 80, the inner wall of the small hole section is provided with an annular lubricating oil groove (not shown in the figure), and the pump body 10 is also provided with an inclined oil hole (not shown in the figure) for communicating the pump outlet and the lubricating oil groove; the variable sliding block 30, the driving shaft 40, the rotor 50 and the blades 60 are all installed in the rotor cavity 12, the pump cover 20 is used for sealing the rotor cavity 12, shaft holes for installing the driving shaft 40 are respectively formed in the bottom of the rotor cavity 12 and the pump cover 20, a driving gear 70 is installed after one end of the driving shaft 40 penetrates out of the shaft holes of the pump cover 20, the driving gear 70 is meshed with a crankshaft gear 80, and an oil spraying hole (not shown in the figure) is formed in the position, corresponding to the position where the driving gear 70 is meshed with the crankshaft gear 80, of the pump cover 20; a proportional electromagnetic valve 13 and a safety valve 14 are also arranged on the pump body 10; the cylinder body 10 has a cylinder joint surface on the side on which the crank gear 80 and the drive gear 70 are mounted.
In the technical scheme, under the condition that the boundary of the pump body installation is not changed, the power of the engine crankshaft can be transmitted to the oil pump by adding the crankshaft gear 80 and the driving gear 70, so that the transmission ratio can be improved to be more than 2, the rotating speed range of the oil pump is expanded, and the matching control of the electromagnetic valve and the maximum power saving of the oil pump are facilitated. In addition, a wire retainer ring 83 is arranged on the cylindrical part 81 of the crank gear, and a step surface is arranged in the large through hole 11, so that the crank gear 80 can be stably limited on the pump body 10 before being arranged on an engine crankshaft, and the phenomenon that the crank gear 80 falls out of the large through hole 11 due to the shaking and dead weight during logistics transportation of the oil pump assembly and assembly of the oil pump of the engine to influence the assembly machine is avoided, and the rotation of the crank gear 80 cannot be influenced by the existence of the wire retainer ring 83 after the assembly machine is finished.
As shown in fig. 6 to 8, the variable slider 30 is a straight-pushing slider structure, a cavity for accommodating the rotor and the blade is disposed in the middle of the variable slider 30, a feedback cavity 31 is formed between one end of the variable slider 30 and the sidewall of the rotor cavity of the pump body, a spring cavity 32 is formed at the other end opposite to the feedback cavity, and notches 33 are disposed on the upper and lower end surfaces of the variable slider 30 corresponding to the oil inlet area and the oil outlet area. As the two sides of the variable sliding block 30 are provided with the notches 33 which are symmetrical up and down, the product forms a design of oil inlet and outlet at two sides, the efficiency of oil absorption and oil discharge is improved, the risk of cavitation erosion is reduced, the friction area between the blade and the sliding block is reduced, and the reduction of friction work is facilitated.
As shown in fig. 7 and 8, oil guide grooves 34 communicating with the oil inlet area are provided on the upper and lower end surfaces of the variable displacement slider 30 at positions corresponding to the front of the feedback chamber 31. The oil guide groove 34 is arranged to intercept high-pressure oil leaked from the end face of the variable slider and directly guide the high-pressure oil to the oil inlet area, so that the leaked high-pressure oil is prevented from entering the feedback cavity 31 to influence the variable. The upper and lower end surfaces of the variable displacement slider 30 are respectively provided with an oil drainage groove 35 which is communicated with the oil inlet area and the spring cavity 32. This draining groove 35 can in time arrange the pressure oil that reveals in the spring chamber 32 from the terminal surface clearance and advance oily district, avoids causing unfavorable influence to the variable. And unloading grooves 36 are respectively arranged at the positions corresponding to the wide end oil sealing area and the narrow end oil sealing area at the intersection of the upper end surface and the lower end surface of the variable slider 30 and the inner wall of the cavity. The unloading groove 36 is used for communicating the wide end oil sealing area and the narrow end oil sealing area, so that the phenomenon of oil trapping does not exist in the two areas, pressure is released, and pressure fluctuation is reduced.
As shown in fig. 7 and 8, a sealing groove 37 for mounting a rectangular sealing strip is provided at a position of the variable slider 30 near the feedback chamber 31, and an inclined oil groove 38 is provided at each of upper and lower end surfaces of the variable slider 30 for communicating the sealing groove 37 with an oil discharge area. Because the oblique oil groove 38 leads to with the high-pressure oil in the oil discharge district, just so can compress tightly the rectangle sealing strip through the effect of oil pressure to isolated oil discharge district and feedback chamber.
As shown in fig. 4 and 5, the bottom surface of the pump body rotor cavity 12 and the inner side surface of the pump cover 20 are both provided with an annular oil storage groove 90 surrounding the shaft hole, and are provided with small special-shaped grooves 100 for communicating the annular oil storage groove 90 with the oil discharge area; bushings are mounted in shaft holes of the pump body 10 and the pump cover 20, two ends of the driving shaft 40 are in clearance fit with the shaft hole bushings, as shown in fig. 1, a shaft sealing cover 15 is mounted on the outer side face of the pump body 10 corresponding to the position of the shaft hole, a gap exists between the end face of one end of the driving shaft 40 and the shaft sealing cover 15, and the driving shaft 40 is provided with an axial central through hole. The special-shaped small groove 100 is used for introducing high-pressure oil in an oil discharge area into the annular oil storage groove 90, then the high-pressure oil flows into a gap between two ends of the driving shaft 40 and a shaft hole bushing, because the shaft sealing cover 15 is installed at a position, corresponding to a shaft hole, on the outer side surface of the pump body 10, a gap exists between the end surface of one end of the driving shaft 40 and the shaft sealing cover 15, the driving shaft 40 is provided with an axial central through hole, and therefore the high-pressure oil can flow towards the end of the driving gear 70 through the central through hole of the driving shaft 40, and circulation of lubricating oil is formed. As shown in fig. 4, in order to improve the oil suction noise, a flow dividing block 16 is provided at the oil inlet of the pump body 10.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Some of the figures and descriptions of the present invention have been simplified to provide a convenient understanding of the modifications of the invention relative to the prior art, and to omit elements for clarity, as those skilled in the art will recognize may also constitute the subject matter of the present invention.
Claims (10)
1. The utility model provides a full variable displacement oil pump of commercial car, includes pump body (10), pump cover (20), variable slider (30), drive shaft (40), rotor (50), blade (60), drive gear (70), its characterized in that: the pump body (10) is provided with a large through hole (11) and a rotor cavity (12); a crank gear (80) is installed in the large through hole (11), the crank gear (80) is composed of a middle cylindrical part (81) and an annular gear tooth part (82), an inner hole of the cylindrical part (81) is used for connecting an engine crankshaft, an annular groove (81 a) is formed in the periphery of the cylindrical part (81), and a steel wire retaining ring (83) with a gap is installed in the annular groove (81 a); the large through hole (11) is divided into a small hole section and a large hole section, an annular step surface is formed between the small hole section and the large hole section, the cylinder part (81) of the crankshaft gear and the steel wire retainer ring (83) are inserted into the small hole section, and the steel wire retainer ring (83) deforms due to elasticity of the steel wire retainer ring after entering the large hole section, so that a gap and the inner and outer diameters of the steel wire retainer ring (83) are enlarged, and the step surface can prevent the steel wire retainer ring (83) from axially moving into the small hole section; the variable sliding block (30), the driving shaft (40), the rotor (50) and the blades (60) are all installed in the rotor cavity (12), the pump cover (20) is used for sealing the rotor cavity (12), shaft holes used for installing the driving shaft (40) are respectively formed in the bottom of the rotor cavity (12) and the pump cover (20), one end of the driving shaft (40) penetrates out of the shaft holes of the pump cover (20) and then is provided with the driving gear (70), and the driving gear (70) is meshed with the crankshaft gear (80); a proportional electromagnetic valve (13) and a safety valve (14) are also mounted on the pump body (10); the cylinder body joint surface is arranged on one surface of the pump body (10) provided with the crankshaft gear (80) and the driving gear (70).
2. The full-variable displacement oil pump for commercial vehicles according to claim 1, characterized in that: the inner wall of the small hole section is provided with an annular lubricating oil groove, and the pump body (10) is also provided with an inclined oil hole for communicating the outlet of the pump with the lubricating oil groove.
3. The full variable displacement oil pump of a commercial vehicle according to claim 1 or 2, characterized in that: and an oil injection hole is formed in the position, corresponding to the meshing position of the driving gear (70) and the crankshaft gear (80), on the pump cover (20).
4. The full variable displacement oil pump of commercial vehicle according to claim 1 or 2, characterized in that: the variable sliding block (30) is of a direct-pushing type sliding block structure, a cavity for accommodating a rotor and a blade is formed in the middle of the variable sliding block (30), a feedback cavity (31) is formed between one end of the variable sliding block (30) and the side wall of a rotor cavity of the pump body, a spring cavity (32) is formed at the other end opposite to the feedback cavity, and notches (33) are formed in the positions, corresponding to an oil inlet area and an oil outlet area, of the upper end face and the lower end face of the variable sliding block (30).
5. The full-variable displacement oil pump for commercial vehicles according to claim 4, characterized in that: the upper end surface and the lower end surface of the variable slider (30) are respectively provided with an oil guide groove (34) communicated with the oil inlet area corresponding to the front position of the feedback cavity (31).
6. The full-variable displacement oil pump for commercial vehicles according to claim 4, characterized in that: the upper end surface and the lower end surface of the variable slider (30) are respectively provided with an oil drainage groove (35) which is communicated with the oil inlet area and the spring cavity (32).
7. The full-variable displacement oil pump for commercial vehicles according to claim 4, characterized in that: and unloading grooves (36) are respectively arranged at the positions corresponding to the wide end oil sealing area and the narrow end oil sealing area at the intersection of the upper end surface and the lower end surface of the variable sliding block (30) and the inner wall of the cavity.
8. The full-variable displacement oil pump for commercial vehicles according to claim 4, characterized in that: a sealing groove (37) for mounting a rectangular sealing strip is arranged at the position, close to the feedback cavity (31), of the variable sliding block (30), and an inclined oil groove (38) is respectively arranged on the upper end face and the lower end face of the variable sliding block (30) and used for communicating the sealing groove (37) with an oil discharge area.
9. The all-variable displacement oil pump for commercial vehicles according to claim 1 or 2, characterized in that: the bottom surface of the rotor cavity (12) of the pump body and the inner side surface of the pump cover (20) are both provided with annular oil storage grooves (90) surrounding the shaft holes, and are also provided with special-shaped small grooves (100) used for communicating the annular oil storage grooves (90) with an oil discharge area; all install the bush in the shaft hole of the pump body (10) and pump cover (20), be clearance fit between the both ends of drive shaft (40) and the shaft hole bush, shaft seal lid (15) are installed to the position that pump body (10) lateral surface corresponds the shaft hole, have the clearance between the terminal surface of drive shaft (40) one end and shaft seal lid (15), and drive shaft (40) are equipped with axial central through hole.
10. A commercial vehicle full variable displacement oil pump according to claim 1 or 2, characterized in that: a flow dividing block (16) is arranged at an oil inlet of the pump body (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015065.8A CN114294071B (en) | 2022-01-08 | 2022-01-08 | Full variable displacement oil pump of commercial car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015065.8A CN114294071B (en) | 2022-01-08 | 2022-01-08 | Full variable displacement oil pump of commercial car |
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| Publication Number | Publication Date |
|---|---|
| CN114294071A CN114294071A (en) | 2022-04-08 |
| CN114294071B true CN114294071B (en) | 2022-11-18 |
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| CN202210015065.8A Active CN114294071B (en) | 2022-01-08 | 2022-01-08 | Full variable displacement oil pump of commercial car |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114396330A (en) * | 2022-01-24 | 2022-04-26 | 浙江科博达工业有限公司 | Engine end cover integrated type oil pump assembly |
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Address after: No.69 Hengyue North Road, Chengguan Town, Hengdong County, Hengyang City, Hunan Province Patentee after: Hunan Meihu Intelligent Manufacturing Co.,Ltd. Country or region after: China Patentee after: Cummins (China) Investment Co.,Ltd. Address before: No.69 Hengyue North Road, Chengguan Town, Hengdong County, Hengyang City, Hunan Province Patentee before: Hunan Oil Pump Co.,Ltd. Country or region before: China Patentee before: Cummins (China) Investment Co.,Ltd. |
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