CN112502807B - Engine and vehicle - Google Patents
Engine and vehicle Download PDFInfo
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- CN112502807B CN112502807B CN202011348130.6A CN202011348130A CN112502807B CN 112502807 B CN112502807 B CN 112502807B CN 202011348130 A CN202011348130 A CN 202011348130A CN 112502807 B CN112502807 B CN 112502807B
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- main bearing
- boss
- oil pump
- main
- bolt
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- 239000003921 oil Substances 0.000 abstract description 63
- 239000010705 motor oil Substances 0.000 abstract description 16
- 230000001965 increasing effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The application discloses an engine and a vehicle, wherein the engine comprises a crankshaft, a first main bearing, a second main bearing and an engine oil pump assembly; the crankshaft comprises a first main journal and a second main journal; the first main bearing supports a first main journal and comprises a first main bearing seat and a first main bearing cover connected to the first main bearing seat; the second main bearing supports a second main journal and comprises a second main bearing seat and a second main bearing cover connected to the second main bearing seat; the oil pump assembly comprises an oil pump base for fixing an oil pump, and the oil pump base is connected to the first main bearing cover and the second main bearing cover. Therefore, the rigidity of the first main bearing and the second main bearing in the axial direction is enhanced, the vibration problem caused by the movement of the crankshaft is improved, and the NVH performance of the engine is improved.
Description
Technical Field
The application relates to the field of vehicles, in particular to an engine and a vehicle.
Background
Currently, the trend of engine development is light weight, high power, high detonation pressure. With the improvement of the performance of the engine, the main bearing seat inside the engine cylinder body is designed to be more compact and bear more and more loads. When the engine is in operation, the pressure generated by the combustion of the gas in each cylinder and the inertia force of the connecting rod and the crankshaft act on the main bearings, thereby generating complicated stress strain, and therefore, the main bearings are required to have sufficient strength and rigidity.
The engine crankshaft generally comprises main journals, connecting journals and a crank, and the current engines are all in a full-support structure, that is, each main journal is supported by one main bearing, in the current mainstream gantry cylinder body, the main bearings are independent, and the bearing caps of the main bearings are connected to the bearing seats of the main bearings only in the radial direction of the main journals through bolts, however, the structure has the defect that the rigidity of the main bearings in the axial direction of the crankshaft is insufficient.
Disclosure of Invention
In view of this, the present application provides an engine and a vehicle that can enhance the rigidity of a main bearing in the axial direction of a crankshaft.
Specifically, the method comprises the following technical scheme:
in a first aspect, embodiments of the present application provide an engine comprising a crankshaft, a first main bearing, a second main bearing, an oil pump assembly, and an engine block;
the crankshaft comprises a first main journal, a second main journal, a connecting rod journal and a crank, the first main journal and the second main journal are positioned at the front part of the crankshaft, the connecting rod journal is arranged between the first main journal and the second main journal, and two ends of the connecting rod journal are respectively connected with the first main journal and the second main journal through the crank;
the first main bearing supports the first main journal, and the first main bearing comprises a first main bearing seat and a first main bearing cover connected to the first main bearing seat;
the second main bearing supports the second main journal, and the second main bearing comprises a second main bearing seat and a second main bearing cover connected to the second main bearing seat;
the oil pump assembly comprises an oil pump base for fixing an oil pump, and the oil pump base is connected to the first main bearing cover and the second main bearing cover.
Optionally, the oil pump mount includes a first side portion and a second side portion opposite the first side portion, the first side portion being connected to the first main bearing cap and the second side portion being connected to the second main bearing cap.
Optionally, the first side portion has an M-shaped cross-sectional shape, and a middle portion of the first side portion is provided with a first boss protruding toward a lower portion of the oil pump mount, and the first boss is connected to the first main bearing cap.
Optionally, a second boss corresponding to the first boss is provided in a middle portion of a top surface of the first main bearing cap, and the second boss has a shape that gradually narrows from a bottom of the second boss to a top of the second boss.
Optionally, a first bolt is arranged on the first boss, a first bolt connecting hole corresponding to the first bolt is arranged on the second boss, and the first boss is connected to the second boss through the first bolt.
Optionally, the second side portion has an M-shaped cross-sectional shape, and a middle portion of the second side portion is provided with a third boss protruding toward a lower portion of the oil pump mount, and the third boss is connected to the second main bearing cap.
Optionally, a middle portion of a top surface of the second main bearing cap is provided with a fourth boss corresponding to the third boss, and the fourth boss has a shape gradually narrowing from a bottom of the fourth boss to a top of the fourth boss.
Optionally, a second bolt is arranged on the third boss, a second bolt connecting hole corresponding to the second bolt is arranged on the fourth boss, and the third boss is connected to the fourth boss through the second bolt.
Optionally, a third bolt, a fourth bolt, a fifth bolt and a sixth bolt are arranged at a corner of the oil pump base, and the corner of the oil pump base is connected with the engine block through the third bolt, the fourth bolt, the fifth bolt and the sixth bolt.
In a second aspect, embodiments of the present application provide a vehicle including an engine as described above.
The technical scheme provided by the embodiment of the application has the beneficial effects that at least:
according to the engine oil pump assembly, the engine oil pump base of the engine oil pump assembly is directly connected to the respective main bearing covers of the first main bearing and the second main bearing, so that the first main bearing and the second main bearing which are originally independent are connected together through the engine oil pump base, the rigidity of the first main bearing and the second main bearing in the axial direction of a crankshaft is enhanced, the vibration problem caused by the movement of the crankshaft is solved, and the NVH performance of an engine is improved; in addition, the oil pump base is directly connected to the main bearing cover, so that a bracket for mounting the oil pump can be omitted, the number of parts of the engine is reduced, the space of the engine is saved, and the engine is lighter and more compact in structure.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a partial perspective view of an engine according to an embodiment of the present application;
FIG. 2 is a schematic view of a connection of an oil pump mount to a first main bearing cap and a second main bearing cap according to an embodiment of the present application;
fig. 3 is an exploded perspective view of fig. 2.
The reference numerals in the figures are denoted respectively by:
1-a first main bearing cap;
110-a second boss;
111-a first bolt connection hole;
2-a second main bearing cap;
210-a fourth boss;
211-a second bolt connection hole;
3-engine oil pump base;
310-a first side;
311-a first boss;
312-a first bolt;
320-a second side;
321-a third boss;
322-a second bolt;
330-third bolt;
340-fourth bolt;
350-fifth bolt;
4-a crankshaft;
410-a first main journal;
420-a second main journal;
430-connecting rod neck;
440-crank.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Unless otherwise defined, technical or scientific terms used herein shall have the meaning understood by one of ordinary skill in the art to which this application belongs. As used in this application, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
In order to make the technical solutions and advantages of the present application clearer, the following will describe the embodiments of the present application in further detail with reference to the accompanying drawings.
FIG. 1 is a partial perspective view of an engine according to an embodiment of the present application.
As shown in fig. 1, the present embodiment provides an engine including a crankshaft 4, a first main bearing, a second main bearing, an oil pump assembly, and an engine block (not shown).
The crankshaft 4 includes a first main journal 410, a second main journal 420, a connecting rod journal 430, and a crank 440, the first main journal 410 and the second main journal 420 are located at a front portion of the crankshaft 4, the connecting rod journal 430 is disposed between the first main journal 410 and the second main journal 420, and both ends of the connecting rod journal 430 are respectively connected with the first main journal 410 and the second main journal 420 through the crank 440.
The first main bearing supports a first main journal 410, and the first main bearing includes a first main bearing housing (not shown) and a first main bearing cap 1 connected to the first main bearing housing.
The second main bearing supports a second main journal 420, and the second main bearing includes a second main bearing housing (not shown) and a second main bearing cap 2 connected to the second main bearing housing.
The oil pump assembly comprises an oil pump base 3 for fixing an oil pump, and the oil pump base 3 is connected to a first main bearing cover 1 and a second main bearing cover 2.
According to the engine oil pump assembly, the engine oil pump base 3 of the engine oil pump assembly is directly connected to the respective main bearing covers of the first main bearing and the second main bearing, so that the first main bearing and the second main bearing which are originally independent are connected together through the engine oil pump base 3, the rigidity of the first main bearing and the second main bearing in the axial direction of a crankshaft is enhanced, the vibration problem caused by the movement of the crankshaft 4 is solved, and the NVH performance of an engine is improved; in addition, the oil pump base 3 is directly connected to the main bearing cover, so that a bracket for mounting the oil pump can be omitted, the number of parts of the engine is reduced, the space of the engine is saved, and the engine is lighter and more compact in structure.
Depending on the location of the engine block and the mounting plane of the oil pan, the engine block is generally divided into the following three types:
the general cylinder body is characterized in that the mounting plane of an oil pan and the rotation center of a crankshaft are at the same height;
the gantry cylinder body is characterized in that an oil pan mounting plane is lower than the rotation center of a crankshaft;
tunnel type cylinder body: the main bearing hole of the cylinder crankshaft in the form is integral, a rolling bearing is adopted, the main bearing hole is large, and the crankshaft is installed from the rear part of the cylinder.
Other known functions and configurations of the engine according to the embodiments of the present application will not be described in detail herein.
In the embodiment of the present application, the engine cylinder block may be a gantry type cylinder block, for example, a first main bearing housing and a second main bearing housing are fitted to the engine cylinder block, the first main bearing cap 1 is connected to the first main bearing housing, and the second main bearing cap 2 is connected to the second main bearing housing.
The oil pump assembly comprises an oil pump and an oil pump base 3 for fixing the oil pump. The oil pump is used for pressurizing oil in the oil pan and then pumping the oil to the oil filter and each lubricating oil channel so as to lubricate each main moving part of the engine and filter the oil. When the engine works, the oil pump continuously works, so that the continuous circulation of engine oil in the lubricating oil way is ensured.
With the continuous increase of explosion pressure and engine rotation speed of a direct injection supercharged engine, impact force transmitted to a main bearing seat of a crankshaft is larger and larger when rotating members such as the crankshaft and a piston connecting rod work, a main bearing has to have good rigidity, and otherwise, the problems of vibration noise deterioration and bearing bush abrasion are caused.
The traditional rigidity strengthening mode is to design the main bearing seats to be thicker and higher or directly connect the main bearing seats into a whole, but the weight increase and the space occupation are also meant, however, the requirements of the vehicle on fuel saving and consumption reduction require the design of the engine to be lighter and more compact, and the two factors are mutually contradictory to the requirements of the engine design, and bring great difficulty to the design of the engine.
In the embodiment according to the application, the oil pump base 3 is directly connected to the first main bearing cover 1 and the second main bearing cover 2, so that the first main bearing and the second main bearing are connected together through the oil pump base 3 in the axial direction of the crankshaft, thereby avoiding the vibration of the first main bearing and the second main bearing caused by the movement of rotating parts such as the crankshaft 4, strengthening the rigidity of the first main bearing and the second main bearing in the axial direction, and improving the NVH performance of the engine.
The conventional oil pump is mounted by a bracket, which occupies a larger space than the embodiment of the present application, and requires an additional bracket.
In the embodiment of the application, the oil pump base 3 is directly connected to the first main bearing cover 1 and the second main bearing cover 2, so that a bracket for mounting the oil pump can be omitted, the number of parts of the engine is reduced, the space of the engine is saved, and the engine is lighter and more compact in structure.
Therefore, the engine according to the embodiment of the application meets the requirements of enhancing the axial rigidity of the main bearing and being lighter and more compact in engine design.
FIG. 2 is a schematic view of a connection of an oil pump mount to a first main bearing cap and a second main bearing cap according to an embodiment of the present application; fig. 3 is an exploded perspective view of fig. 2.
As shown in fig. 2 and 3, the oil pump mount 3 includes a first side portion 310 and a second side portion 320 opposite to the first side portion 310, the first side portion 310 being connected to the first main bearing cap 1, and the second side portion 320 being connected to the second main bearing cap 2.
The first side portion 310 is connected to the first main bearing cap 1 and the second side portion 320 is connected to the second main bearing cap 2 along the axial direction of the crankshaft 4 from the first side portion 310 to the second side portion 320, that is, the first main bearing cap 1 and the second main bearing cap 2 are connected together in the axial direction, and the first main bearing and the second main bearing are connected together in the axial direction.
Originally, the first main bearing and the second main bearing which are independent of each other are connected together through the oil pump base 3, so that the rigidity of the first main bearing and the second main bearing in the axial direction of the crankshaft is enhanced, the vibration problem caused by the movement of the crankshaft 4 is improved, and the NVH performance of the engine is improved.
The side where the first side portion 310 is located is a power input side of the oil pump, and the side is opposite to the front end of the crankshaft 4, so that connection of the oil pump and the crankshaft 4 is facilitated.
The pressure of the lubricating oil is all from the oil pump, and the power of the oil pump is transmitted to the oil pump through the rotation of the crankshaft 4 via gears.
As shown in fig. 2 and 3, according to the embodiment of the present application, the first side portion 310 has an M-shaped cross-sectional shape, a middle portion of the first side portion 310 is provided with a first boss 311 protruding toward the lower side of the oil pump mount 3, and the first boss 311 is connected to the first main bearing cap 1.
The cross-sectional shape of the M-shape may increase the stiffness of the first side portion 310, while also increasing the stiffness of the connection between the first side portion 310 and the first main bearing cap 1.
As shown in fig. 2 and 3, in the present embodiment, the middle of the top surface of the first main bearing cap 1 is provided with a second boss 110 corresponding to the first boss 311, and the second boss 110 has a shape that gradually narrows from the bottom of the second boss 110 to the top of the second boss 110.
The second boss 110 protrudes towards the first side portion 310 of the oil pump base 3, the second boss 110 provides a joint surface for the first main bearing cap 1 to be connected with the first side portion 310, the first boss 311 of the first side portion 310 corresponds to the second boss 110 of the first main bearing cap 1, and the first boss 311 and the second boss 110 are mutually jointed, so that the first side portion 310 can be well jointed with the first main bearing cap 1, the first side portion 310 and the first main bearing cap 1 can be connected more tightly and firmly, and the generation of vibration abnormal sound in the rotation process of the crankshaft 4 is avoided.
The second boss 110 has a shape gradually narrowing from the bottom of the second boss 110 to the top of the second boss 110, and this shape is more favorable for the first main bearing cap 1 to match with the first side surface with the M-shaped cross section, so that the first side portion 310 and the first main bearing cap 1 can be more closely attached, and the generation of vibration abnormal noise during the rotation of the crankshaft 4 is avoided.
The second boss 110 may also increase the rigidity of the first main bearing in the radial direction of the crankshaft 4.
The first main bearing is connected to the first main bearing cap 1 of the first main bearing via the first side 310 of the oil pump mount 3, so that the first main bearing has an increased stiffness in both the radial direction and the axial direction.
As shown in fig. 2 and 3, according to the embodiment of the present application, a first bolt 312 is disposed on the first boss 311, a first bolt connection hole 111 corresponding to the first bolt 312 is disposed on the second boss 110, and the first boss 311 is connected to the second boss 110 by the first bolt 312.
Bolt mounting holes are preset at the first bosses 311, first bolt connecting holes 111 corresponding to the first bolts 312 are arranged on the second bosses 110, and the recessed space of the first bosses 311 provides mounting space for the first bolts 312, so that connection of the first bolts 312 is facilitated, and interference with other parts is avoided.
It should be understood that the first boss 311 and the second boss 110 are not limited to being bolted, but may be connected by any connecting means known in the art, such as welding, etc.
As shown in fig. 2 and 3, according to the embodiment of the present application, the second side portion 320 has an M-shaped cross-sectional shape, a middle portion of the second side portion 320 is provided with a third boss 321 that protrudes downward of the oil pump mount 3, and the third boss 321 is connected to the second main bearing cap 2.
The cross-sectional shape of the M-shape may increase the stiffness of the second side portion 320, while also increasing the stiffness of the connection between the second side portion 320 and the second main bearing cap 2.
As shown in fig. 2 and 3, according to the embodiment of the present application, the middle of the top surface of the second main bearing cap 2 is provided with a fourth boss 210 corresponding to the third boss 321, and the fourth boss 210 has a shape that gradually narrows from the bottom of the fourth boss 210 to the top of the fourth boss 210.
The fourth boss 210 protrudes toward the second side portion 320 of the oil pump base 3, the fourth boss 210 provides a joint surface for the second main bearing cap 2 to be connected with the second side portion 320, the third boss 321 of the second side portion 320 corresponds to the fourth boss 210 of the second main bearing cap 2, and the third boss 321 and the fourth boss 210 are connected with each other, so that the second side portion 320 can be well attached to the second main bearing cap 2, the second side portion 320 and the second main bearing cap 2 can be connected more tightly and firmly, and the generation of vibration abnormal sound in the rotation process of the crankshaft 4 is avoided.
The fourth boss 210 has a shape gradually narrowing from the bottom of the fourth boss 210 to the top of the fourth boss 210, and this shape is more favorable for the second main bearing cap 2 to match with the second side surface with the M-shaped cross section, so that the second side portion 320 and the second main bearing cap 2 can be more closely attached, and the generation of vibration noise during the rotation of the crankshaft 4 is avoided.
The fourth boss 210 may also increase the rigidity of the second main bearing in the radial direction of the crankshaft 4.
The second side 320 of the oil pump mount 3 is connected to the second main bearing cap 2 of the second main bearing, so that the second main bearing has increased rigidity in both the radial direction and the axial direction.
As shown in fig. 2 and 3, the third boss 321 is provided with a second bolt 322, the fourth boss 210 is provided with a second bolt connection hole 211 corresponding to the second bolt 322, and the third boss 321 is connected to the fourth boss 210 by the second bolt 322.
Bolt mounting holes are preset in the third bosses 321, second bolt connecting holes 211 corresponding to the second bolts 322 are formed in the fourth bosses 210, mounting space is provided for the second bolts 322 by the aid of the concave space of the third bosses 321, connection of the second bolts 322 is facilitated, and interference with other parts is avoided.
It should be understood that the third boss 321 and the fourth boss 210 are not limited to being bolted, but may be connected by any connecting means known in the art, such as welding.
As shown in fig. 2 and 3, the corner of the oil pump mount 3 is provided with a third bolt 330, a fourth bolt 340, a fifth bolt 350, and a sixth bolt 360, and the corner of the oil pump mount 3 is connected to an engine block (not shown) by the third bolt 330, the fourth bolt 340, the fifth bolt 350, and the sixth bolt (not shown). The connection of the engine oil pump base 3 can be further firmly increased, so that the engine oil pump can be firmly installed without an additional support, and the engine is lighter and more compact in structure.
The connection of the oil pump base 3 and the engine cylinder block also helps to strengthen the connection rigidity between the oil pump base 3 and the first main bearing and the second main bearing.
In a second aspect, embodiments of the present application provide a vehicle including an engine according to embodiments of the present application. The engine according to the embodiment of the present application has the above technical effects, so the vehicle according to the embodiment of the present application also has corresponding technical effects, that is, the engine oil pump base 3 of the engine oil pump assembly is directly connected to the respective main bearing caps of the first main bearing and the second main bearing, so that the originally independent first main bearing and second main bearing are connected together through the engine oil pump base 3, thereby enhancing the rigidity of the first main bearing and the second main bearing in the axial direction, improving the vibration problem caused by the movement of the crankshaft 4, and improving the NVH performance of the engine; in addition, the oil pump base 3 is directly connected to the main bearing cover, so that a bracket for mounting the oil pump can be omitted, the number of parts of the engine is reduced, the space of the engine is saved, and the engine is lighter and more compact in structure.
The construction and operation of a vehicle according to an embodiment of the present application will be understood and readily implemented by those skilled in the art, and will not be described in detail.
It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein generally includes motor vehicles, such as passenger automobiles including Sport Utility Vehicles (SUVs), utility vehicles, trucks, various commercial vehicles, watercraft including various boats, ships, aircraft, and the like, and hybrid vehicles, such as both gasoline-powered and electric-powered vehicles.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (7)
1. An engine, characterized in that the engine comprises a crankshaft (4), a first main bearing, a second main bearing, an oil pump assembly and an engine block;
the crankshaft (4) comprises a first main journal (410), a second main journal (420), a connecting rod journal (430) and a crank (440), the first main journal (410) and the second main journal (420) are located at the front part of the crankshaft (4), the connecting rod journal (430) is arranged between the first main journal (410) and the second main journal (420), and two ends of the connecting rod journal (430) are respectively connected with the first main journal (410) and the second main journal (420) through the crank (440);
the first main bearing supports the first main journal (410), the first main bearing comprising a first main bearing seat and a first main bearing cap (1) connected to the first main bearing seat;
the second main bearing supports the second main journal (420), and the second main bearing comprises a second main bearing seat and a second main bearing cover (2) connected to the second main bearing seat;
the oil pump assembly comprises an oil pump base (3) for fixing an oil pump, wherein the oil pump base (3) is connected to the first main bearing cover (1) and the second main bearing cover (2);
the oil pump mount (3) includes a first side portion (310) and a second side portion (320) opposite to the first side portion (310), the first side portion (310) is connected to the first main bearing cap (1), the second side portion (320) is connected to the second main bearing cap (2), and the first side portion (310) to the second side portion (320) are along the axial direction of the crankshaft (4);
the first side portion (310) has an M-shaped cross-sectional shape, a first boss (311) protruding toward the lower side of the oil pump mount (3) is provided in the middle of the first side portion (310), and the first boss (311) is connected to the first main bearing cap (1);
the middle of the top surface of the first main bearing cap (1) is provided with a second boss (110) corresponding to the first boss (311), and the second boss (110) has a shape that gradually narrows from the bottom of the second boss (110) to the top of the second boss (110).
2. The engine according to claim 1, characterized in that a first bolt (312) is provided on the first boss (311), a first bolt connection hole (111) corresponding to the first bolt (312) is provided on the second boss (110), and the first boss (311) is connected to the second boss (110) by the first bolt (312).
3. An engine according to claim 1 or 2, characterized in that the second side portion (320) has an M-shaped cross-sectional shape, and the middle of the second side portion (320) is provided with a third boss (321) protruding towards the underside of the oil pump mount (3), the third boss (321) being connected to the second main bearing cap (2).
4. An engine according to claim 3, characterized in that the second main bearing cap (2) is provided with a fourth boss (210) in the middle of its top surface corresponding to the third boss (321), the fourth boss (210) having a shape that tapers from the bottom of the fourth boss (210) to the top of the fourth boss (210).
5. The engine according to claim 4, characterized in that a second bolt (322) is arranged on the third boss (321), a second bolt connection hole (211) corresponding to the second bolt (322) is arranged on the fourth boss (210), and the third boss (321) is connected to the fourth boss (210) through the second bolt (322).
6. An engine according to claim 1, characterized in that the corners of the oil pump mount (3) are provided with a third bolt (330), a fourth bolt (340), a fifth bolt (350) and a sixth bolt (360), the corners of the oil pump mount being connected with the engine block by means of the third bolt (330), the fourth bolt (340), the fifth bolt (350) and the sixth bolt.
7. A vehicle, characterized in that the vehicle comprises an engine according to any one of claims 1-6.
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| CN202011348130.6A CN112502807B (en) | 2020-11-26 | 2020-11-26 | Engine and vehicle |
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| CN202011348130.6A CN112502807B (en) | 2020-11-26 | 2020-11-26 | Engine and vehicle |
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| CN112502807B true CN112502807B (en) | 2022-03-11 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115324761A (en) * | 2022-09-23 | 2022-11-11 | 奇瑞汽车股份有限公司 | Engine cylinder block |
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