Mounting structure for engine crankshaft main bearing pedestal and cylinder body
A technology for engine cylinder blocks and main bearing housings, applied to shafts and bearings, engine components, machines/engines, etc., can solve problems such as insufficient rigidity, easy vibration and noise, and few connection contact surfaces, and achieve the goal of reducing noise levels Effect
Inactive Publication Date: 2008-03-26
CHONGQING CHANGAN AUTOMOBILE CO LTD
View PDF0 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the existing small-displacement engines, the crankshaft main bearing seat is installed on the cylinder body through two bolts, and the connection surface is basically a plane. Since there are fewer fastening points, the connection contact surface with the cylinder body is also less , making its rigidity insufficient, prone to vibration and noise
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0009] Referring to Fig. 1, the installation structure of the engine crankshaft main bearing seat and the cylinder block includes the engine block 1 and the crankshaft main bearing seat 3, the main body 31 of the crankshaft main bearing seat 3 falls into the corresponding recess 11 of the engine block, through two A long bolt 4 is connected with the cylinder block 1, and there is a wing 32 on both sides of the crankshaft main bearing seat main body 31, correspondingly falling on the boss 12 on the outer periphery of the concave part of the cylinder block, and on the boss 12 corresponding to the wing 32 and the cylinder block An elastic body 2 composed of rubber and metal is arranged between them, and is connected with the cylinder body 1 through two short bolts 5 .
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The installation structure of main crankshaft bearing seat and engine cylinder body includes an engine cylinder body and a main crankshaft bearing seat, which is fallen into the notched part of the cylinder body and connected through two long screw bolts to the cylinder body. The main crankshaft bearing seat has one pair of wings for connecting to the bosses of the cylinder body through two short screw bolts. Therefore, the main crankshaft bearing seat is installed onto the cylinder body through four, rather than two, points and by means of one curved, rather than planar, contact, reaching in increased rigidity of the main crankshaft bearing seat, less vibration and noise. Furthermore, there are elastomers set between the wings and the bosses for attenuating vibration of the main crankshaft bearing seat and lowering noise of the engine.
Description
technical field [0001] The invention belongs to the automobile engine technology, and in particular relates to the installation structure of the crankshaft main bearing seat of the engine. Background technique [0002] With the stricter automobile noise regulations, in order to further reduce the passing noise of automobiles, it is necessary to reduce the noise and vibration of the engine itself. In the existing small-displacement engines, the crankshaft main bearing seat is installed on the cylinder body through two bolts, and the connection surface is basically a plane. Since there are fewer fastening points, the connection contact surface with the cylinder body is also less , making its rigidity insufficient, prone to vibration and noise. Especially when the engine displacement is slightly larger, the vibration and noise are just bigger. Contents of the invention [0003] The invention proposes an installation structure between the engine crankshaft main bearing seat ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): F02F7/00F16C35/00
Inventor 朱絮飞李文兵
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD