CN209925116U - Engine cylinder block and engine - Google Patents
Engine cylinder block and engine Download PDFInfo
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- CN209925116U CN209925116U CN201920755105.6U CN201920755105U CN209925116U CN 209925116 U CN209925116 U CN 209925116U CN 201920755105 U CN201920755105 U CN 201920755105U CN 209925116 U CN209925116 U CN 209925116U
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- crankshaft
- balance shaft
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Abstract
The utility model relates to an engine cylinder body and an engine, the engine cylinder body of the utility model comprises a crankshaft main bearing cap combination surface which is constructed with a crankshaft containing groove, and a crankshaft upper mounting half groove is arranged in the crankshaft containing groove; and a balance bearing installation part for embedding a balance shaft is constructed on the junction surface of the main bearing cap of the crankshaft adjacent to the crankshaft containing groove, and a balance shaft installation part matched with an external installation part and used for installing the balance shaft is arranged on the junction surface of the main bearing cap of the crankshaft beside the balance bearing installation part. Engine cylinder block, through locating crankshaft main bearing cap faying face with balanced bearing dress portion to can make the balanced axle inlay and adorn in balanced bearing dress portion, for prior art, the installation of the balanced axle of can being convenient for, and can make the balanced axle have better installation effect, simultaneously, this engine cylinder block's structure is also simpler, the cost is lower, thereby makes this engine cylinder block have better result of use.
Description
Technical Field
The utility model relates to an engine technology field, in particular to engine cylinder body, simultaneously, the utility model discloses still relate to an engine that has this engine cylinder body.
Background
In order to balance the reciprocating inertia moment of the engine, a balance shaft structure is generally added to the engine with higher NVH requirement. In the prior art, the balance shaft mainly has two mounting modes, namely a middle balance shaft mounting structure for arranging the balance shaft in the middle of a cylinder block, and a bottom balance shaft mounting structure for arranging an engine in an oil pan. Both of these mounting structures have disadvantages, wherein the mid-set mounting structure has the disadvantage of difficult mounting, while the bottom-set mounting structure has a more complex structure and lower reliability. Therefore, it is highly desirable to design a new balance shaft mounting structure to overcome the above-mentioned disadvantages.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to an engine cylinder block, which has a simple structure and is convenient for mounting a balance shaft.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the engine cylinder body comprises a crankshaft main bearing cap junction surface which is provided with a crankshaft containing groove, wherein a half groove is arranged on a crankshaft and is adjacent to the crankshaft containing groove, a balance bearing installation part for embedding a balance shaft is constructed on the crankshaft main bearing cap junction surface, and a balance shaft installation part which is matched with an external installation part and used for installing the balance shaft is configured on the crankshaft main bearing cap junction surface beside the balance bearing installation part.
Further, the balance bearing installation part comprises a balance shaft accommodating groove formed in a joint surface of the main bearing cap of the crankshaft, a plurality of balance shaft upper installation half grooves arranged at intervals are formed in the balance shaft accommodating groove, and the balance shaft installation part comprises an installation unit which is arranged outside the balance shaft upper installation half grooves and is connected with the external installation part.
Further, the mounting unit is a connecting hole, and the external mounting member includes a balance shaft bearing cover having a balance shaft lower mounting half-groove matching with the balance shaft upper mounting half-groove, and a connecting member passing through the balance shaft bearing cover and being connectively fastened in the connecting hole.
Furthermore, the connecting holes are threaded holes, and the connecting pieces are bolts.
And further, a crankshaft bearing cover is fixedly connected to the joint surface of the crankshaft main bearing cover and is adjacent to the balance shaft bearing cover, and a crankshaft lower mounting half groove matched with the crankshaft upper mounting half groove is formed in the crankshaft bearing cover.
Furthermore, the balance bearing installation parts are two parts which are arranged on two sides of the crankshaft accommodating groove.
Further, an oil inlet channel communicated with a main oil channel of the cylinder body in the engine cylinder body is formed in the engine cylinder body, and the oil inlet channel is provided with a first oil inlet channel and a second oil inlet channel which are respectively communicated with the half groove on the crankshaft and the half groove on the balance shaft in one of the balance bearing installation parts; and an oil groove with one end communicated with the first oil inlet channel is constructed in the crankshaft mounting half groove, a third oil inlet channel is constructed between the other balance bearing mounting part and the crankshaft mounting half groove, and the third oil inlet channel forms the communication between the other end of the oil groove and the balance shaft mounting half groove in the balance bearing mounting part.
Further, the third oil inlet duct is in a V shape.
Compared with the prior art, the utility model discloses following advantage has:
(1) engine cylinder block, through locating crankshaft main bearing cap faying face with balanced bearing dress portion to can make the balanced axle inlay and adorn in balanced bearing dress portion, for prior art, the installation of the balanced axle of can being convenient for, and can make the balanced axle have better installation effect, simultaneously, this engine cylinder block's structure is also simpler, the cost is lower, thereby makes this engine cylinder block have better result of use.
(2) The balance bearing mounting part adopts a balance shaft mounting groove, and is simple in structure and convenient to design and implement.
(3) The mounting unit adopts the connecting hole, and the structure is simple, and the processing and the manufacturing are convenient.
(4) Through set up bent axle lower half mounting groove on the bearing cap, can realize adopting same bearing cap and realize the installation of bent axle and balanced axle simultaneously, can simplify the installation of bent axle and balanced axle, also can reduce installation cost simultaneously.
(5) Through setting up two balanced bearing installation portions, can install two balanced axles on this engine cylinder block to can improve the result of use of the engine of using this engine cylinder block.
(6) The first, second and third oil inlet channels are arranged to guide the lubricating oil to flow to the crankshaft and the balance shaft, so as to lubricate the crankshaft and the balance shaft.
Another object of the utility model is to provide an engine, the engine includes as above the engine cylinder body, rotate install in bent axle in the bent axle mounting groove on the engine cylinder body, and by balanced bearing dress portion rotates the balanced axle of holding dress, balanced axle passes through balanced axle installation portion install in on the engine cylinder body, just the engine is still including constituting the bent axle with the transmission is connected between the balanced axle, in order to order about balanced axle moving drive mechanism.
Further, the crankshaft and the balance shaft are disposed to have the same height in the height direction of the engine block, or are disposed in a staggered arrangement.
The engine, through adopting foretell engine cylinder body, not only can balance the reciprocal inertia moment of second order betterly, and have better result of use, simultaneously, its simple structure, the installation of being convenient for, and the processing cost is also lower.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic structural diagram of an engine cylinder block according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of an engine cylinder block according to a first embodiment of the present invention at another viewing angle;
fig. 3 is a schematic view of a part of the structure of an engine according to a second embodiment of the present invention;
FIG. 4 is an exploded assembly view of the engine shown in FIG. 3;
description of reference numerals:
1-an engine block;
101-crankshaft accommodating groove, 1011-crankshaft mounting half groove, 1012-oil groove and 1013-fixing hole;
102-balance shaft accommodating groove, 1021-balance shaft mounting half groove, 1022-connecting hole;
103-crankshaft main bearing cap joint surface, 104-second oil inlet channel, 105-first oil inlet channel, 106-third oil inlet channel, 107-engine cylinder hole;
2-crankshaft, 3-intake side balance shaft, 4-intake side driving gear, 5-balance shaft idler assembly, 6-crankshaft driving chain wheel, 7-chain, 8-exhaust side driving chain wheel and 9-exhaust side balance shaft.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example one
The utility model relates to an engine cylinder body, which comprises a crankshaft main bearing cap junction surface which is provided with a crankshaft accommodating groove, and a crankshaft upper mounting half groove is arranged in the crankshaft accommodating groove; in addition, a balance bearing installation part for embedding a balance shaft is constructed on the junction surface of the main bearing cap of the crankshaft adjacent to the crankshaft containing groove, and a balance shaft installation part matched with an external installation part for installing the balance shaft is arranged on the junction surface of the main bearing cap of the crankshaft beside the balance bearing installation part.
Based on the above overall structure, an exemplary structure of the engine block 1 of the present embodiment is shown in fig. 1 and 2, wherein the aforementioned crank main bearing cap engaging surface 103 is formed by the bottom surface of the engine block 1, and the aforementioned crank receiving groove 101 is formed on the crank main bearing cap engaging surface 103 in a concave shape. In addition, similarly to the conventional structure, a plurality of engine cylinder bores 107 communicating with the crankshaft accommodating groove 101 are formed on the engine block 1.
In this embodiment, the balance bearing assemblies are two balance bearing assemblies respectively disposed at two sides of the crankshaft receiving slot 101, and respectively include an intake side balance bearing assembly at an upper portion in the state shown in fig. 1 and an exhaust side balance bearing assembly at a lower portion in the state shown in fig. 1, and the two balance bearing assemblies are respectively configured to receive the intake side balance shaft and the exhaust side balance shaft, so as to balance the second-order reciprocating inertia moment of the engine, and as is well known to those skilled in the art, the intake side balance bearing assembly and the exhaust side balance bearing assembly are symmetrically disposed about a center line of each engine cylinder bore 107.
In order to improve the installation effect of the crankshaft and the balance shaft, the crankshaft main bearing cap joint surface 103 of the present embodiment is preferably a flat surface. It should be noted that the crankshaft main bearing cap engagement surface 103 may have other shapes such as a stepped surface, instead of a flat surface. In addition, the half groove 1011 is installed on the crankshaft and is specifically a half groove matched with the crankshaft journal to improve the rotation effect of the crankshaft. In addition, the number of the half grooves 1011 on the crankshaft of the present embodiment is matched with the number of the crankshaft journals, and the half grooves 1011 on each crankshaft are arranged at intervals along the length direction of the crankshaft accommodating groove 101.
In addition, in order to realize the installation of the crankshaft on the engine cylinder block 1, a crankshaft bearing cap is fixedly connected to the crankshaft main bearing cap joint surface 103, and a crankshaft lower installation half-groove is configured on the crankshaft bearing cap, and the crankshaft lower installation half-groove is matched with the crankshaft upper installation half-groove 1011. Further, fixing portions are formed at both ends of the half groove 1011 on the crankshaft to be fitted to the crankshaft bearing caps to mount the crankshaft. The fixing portion is specifically a fixing hole 1013, and the fixing hole 1013 is preferably a threaded hole, and in this case, a through hole matching with the threaded hole needs to be provided on the crankshaft bearing cover. Thus, the crankshaft bearing cover is buckled at the crankshaft journal and then passes through the through hole through the bolt to be screwed in the threaded hole, so that the crankshaft can be fixed on the engine cylinder block 1.
As also shown in fig. 1 and 2, the balance bearing assembly includes a balance shaft receiving groove 102 formed in a joint surface 103 of the main bearing cap of the crankshaft, and a plurality of balance shaft mounting half-grooves 1021 are formed in the balance shaft receiving groove 102 and spaced apart from each other. Half groove 1021 is specifically for matching the half groove that the balance shaft journal set up on this balance shaft, and the last installation half groove 1021 of balance shaft is for matching a plurality of that set up in balance shaft journal order. In addition, in order to improve the mounting effect of the balance shafts, the balance shaft mounting part of the present embodiment includes mounting units provided outside the mounting half grooves 1021 in each balance shaft to connect external mounting members.
Wherein, the installation unit is specifically the connecting hole 1022, and the external installation spare includes balanced axle bearing cap to and wear to locate in balanced axle bearing cap and joinable fastens the connecting piece in the screw hole. And a lower mounting half-groove of the balance shaft and a through hole for the connecting piece to pass through are formed on the bearing cover of the balance shaft and matched with the upper mounting half-groove 1021 of the balance shaft. In addition, for the convenience of installation, the connection hole 1022 of the present embodiment is preferably a threaded hole, and in this case, the connection member is specifically a bolt.
It should be noted that the balance shaft bearing cover may be manufactured separately from the balance shaft or may be formed integrally with the balance shaft. In addition, besides the crankshaft and the balance shaft described above respectively adopt the crankshaft bearing cap and the balance shaft bearing cap to realize the installation of the crankshaft and the balance shaft on the engine cylinder block 1, the crankshaft and the balance shaft can also adopt the same bearing cap to realize the installation of the crankshaft and the balance shaft. At this time, a crankshaft lower mounting half-groove, a balance shaft lower mounting half-groove, a through hole and a via hole are required to be simultaneously constructed on the bearing cover.
In addition, in order to achieve lubrication of the crankshaft and the balance shaft, as shown in fig. 2, an oil inlet passage communicating with the cylinder main oil passage is constructed in the engine cylinder 1, and the oil inlet passage has a first oil inlet passage 105 and a second oil inlet passage 104 communicating with the crankshaft mounting half groove 1011 and the balance shaft mounting half groove 1021 in the exhaust side balance shaft accommodating groove 102, respectively. An oil groove with one end communicated with the first oil inlet channel 105 is formed in the crankshaft mounting half-groove 1011, and an oil groove or an oil hole communicated with the second oil inlet channel 104 is formed in the balance shaft mounting half-groove 1021, so that lubricating oil can be respectively guided to the crankshaft mounting half-groove 1011 and the exhaust side, namely the right balance shaft mounting half-groove 1021 in the state shown in fig. 2, and lubrication of the crankshaft and the exhaust side balance shaft can be realized.
In addition, a third oil inlet passage 106 is formed between the balance shaft mounting half-groove 1021 and the crankshaft mounting half-groove 1011 in the balance shaft receiving groove 102 on the intake side shown in fig. 2, and an oil groove 1012 or an oil hole communicating with the third oil inlet passage 106 is formed in the balance shaft mounting half-groove 1021, so that the lubricating oil in the oil groove 1012 can be guided to the third oil inlet passage 106 to lubricate the intake side balance shaft. In order to prevent the third oil inlet passage 106 from interfering with the crankshaft receiving groove 101 and the balance shaft receiving groove 102, the third oil inlet passage 106 of the present embodiment is configured in a "V" shape, and this structure can also improve the flowing effect of the lubricating oil. In addition, in order to further improve the lubricating effect, the first oil inlet passage 105, the second oil inlet passage 104, and the third oil inlet passage 106 of the present embodiment are specifically three provided corresponding to the half groove 1021 in the balance shaft.
The engine cylinder block 1 of this embodiment is through locating balance shaft containing groove 102 on the crankshaft main bearing faying face to can make the balance shaft inlay and adorn in balance shaft containing groove 102, for prior art, the installation of the balance shaft of can being convenient for, and can make the balance shaft have better installation effect, simultaneously, this engine cylinder block 1's structure is also simpler, and the cost is lower, thereby makes this engine cylinder block 1 have better result of use.
Example two
The present embodiment relates to an engine, as shown in fig. 3 and 4, which includes an engine block 1 according to the first embodiment, a crankshaft rotatably mounted in a crankshaft mounting groove of the engine block 1, and an intake-side balance shaft 3 and an exhaust-side balance shaft 9 respectively disposed at both sides of the crankshaft and rotatably supported by balance shaft receiving grooves 102. The crankshaft and the balance shaft are mounted on the engine block 1 via a crankshaft bearing cap and a balance shaft bearing cap, respectively, and as is well known to those skilled in the art, the crankshaft and the balance shaft may be at the same height in the height direction of the engine block 1 or may be arranged in a staggered manner.
In addition, the engine of the embodiment also comprises a transmission mechanism which forms transmission connection between the crankshaft and the two balance shafts so as to drive the balance shafts to operate. This drive mechanism is including locating the bent axle drive sprocket 6 of bent axle tip, locating the balanced axle 9 drive sprocket of the exhaust side of 9 tip of exhaust side balance axle, locating the balanced axle 3 drive gear of the side of admitting air of 3 tip of the balanced axle of side of admitting air to and locate balanced axle idler assembly 5 on engine cylinder block 1, and this balanced axle idler assembly 5 has idler sprocket and idler gear that set up side by side. The transmission mechanism of the embodiment further comprises a chain 7 connected among a crankshaft driving chain wheel 6, an exhaust side balance shaft 9 driving chain wheel and an idler chain wheel, and the idler gear is meshed with the intake side balance shaft 3 driving gear, so that the crankshaft can drive the intake side balance shaft 3 and the exhaust side balance shaft 9 to rotate simultaneously.
The engine of this embodiment adopts engine cylinder block 1 as described in the first embodiment, not only can balance the second order reciprocating inertia moment well, but also has a good use effect, and simultaneously, its simple structure is convenient for install, and the processing cost is also lower.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An engine block comprising a crankshaft main bearing cap bonding surface (103) configured with a crankshaft receiving groove (101), said crankshaft receiving groove (101) having a crankshaft upper mounting half-groove (1011) therein, characterized in that: and a balance bearing installation part for embedding a balance shaft is constructed on the junction surface (103) of the main bearing cap of the crankshaft adjacent to the crankshaft containing groove (101), and a balance shaft installation part matched with an external installation part for installing the balance shaft is arranged on the junction surface (103) of the main bearing cap of the crankshaft beside the balance bearing installation part.
2. The engine block according to claim 1, wherein: the balance bearing installation part comprises a balance shaft accommodating groove (102) constructed on a joint surface (103) of the main bearing cap of the crankshaft, a plurality of balance shaft upper installation half grooves (1021) arranged at intervals are arranged in the balance shaft accommodating groove (102), and the balance shaft installation part comprises an installation unit which is arranged outside the balance shaft upper installation half grooves (1021) and is used for connecting the external installation parts.
3. The engine block according to claim 2, wherein: the mounting unit is a connecting hole (1022), and the external mounting part comprises a balance shaft bearing cover with a balance shaft lower mounting half groove matched with the balance shaft upper mounting half groove (1021), and a connecting piece which is arranged in the balance shaft bearing cover in a penetrating way and can be fixedly connected in the connecting hole (1022).
4. The engine block according to claim 3, wherein: the connecting holes (1022) are threaded holes, and the connecting pieces are bolts.
5. The engine block according to claim 3, wherein: and a crankshaft bearing cover is fixedly connected to the joint surface (103) of the crankshaft main bearing cover and is adjacent to the balance shaft bearing cover, and a crankshaft lower mounting half groove matched with the crankshaft upper mounting half groove (1011) is formed in the crankshaft bearing cover.
6. The engine block according to any one of claims 2 to 5, characterized in that: the balance bearing installation parts are two parts which are arranged on two sides of the crankshaft accommodating groove (101).
7. The engine block according to claim 6, wherein: an oil inlet channel communicated with a main oil channel of the cylinder body in the engine cylinder body (1) is constructed in the engine cylinder body (1), and the oil inlet channel is provided with a first oil inlet channel (105) and a second oil inlet channel (104) which are respectively communicated with a half groove (1011) arranged on the crankshaft and a half groove (1021) arranged on the balance shaft in the balance bearing mounting part of the crankshaft; and an oil groove (1012) with one end communicated with the first oil inlet channel (105) is constructed in the half-groove (1011) arranged on the crankshaft, a third oil inlet channel (106) is constructed between the other balance bearing installation part and the half-groove (1011) arranged on the crankshaft, and the third oil inlet channel (106) is constructed to communicate the other end of the oil groove (1012) with the half-groove (1021) arranged on the balance shaft in the balance bearing installation part.
8. The engine block according to claim 7, wherein: the third oil inlet channel (106) is V-shaped.
9. An engine, characterized in that: the engine comprises the engine block (1) as defined in any one of claims 1 to 8, a crankshaft (2) rotatably mounted in a crankshaft receiving groove (101) on the engine block (1), and a balance shaft rotatably mounted by the balance bearing mounting portion, the balance shaft being mounted on the engine block (1) through the balance shaft mounting portion, and the engine further comprises a transmission mechanism constituting a transmission connection between the crankshaft (2) and the balance shaft to drive the balance shaft to operate.
10. The engine of claim 9, wherein: the crankshaft (2) and the balance shaft are arranged to have the same height in the height direction of the engine block (1), or are arranged in a staggered manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920755105.6U CN209925116U (en) | 2019-05-23 | 2019-05-23 | Engine cylinder block and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920755105.6U CN209925116U (en) | 2019-05-23 | 2019-05-23 | Engine cylinder block and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209925116U true CN209925116U (en) | 2020-01-10 |
Family
ID=69091590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920755105.6U Active CN209925116U (en) | 2019-05-23 | 2019-05-23 | Engine cylinder block and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209925116U (en) |
-
2019
- 2019-05-23 CN CN201920755105.6U patent/CN209925116U/en active Active
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