CN207920726U - A kind of timing chain case of engine - Google Patents
A kind of timing chain case of engine Download PDFInfo
- Publication number
- CN207920726U CN207920726U CN201721756685.8U CN201721756685U CN207920726U CN 207920726 U CN207920726 U CN 207920726U CN 201721756685 U CN201721756685 U CN 201721756685U CN 207920726 U CN207920726 U CN 207920726U
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- China
- Prior art keywords
- pump outlet
- timing chain
- chain case
- water channel
- utility
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Fuel-Injection Apparatus (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The radius of a kind of timing chain case of engine provided by the utility model, including pump outlet and the water channel that is connected to the pump outlet, the knuckle between the water channel side wall and the pump outlet side wall is not less than 4mm.The utility model transition face at the knuckle is gentler, and thickness also greatly increases, and the impact of cavitation generation is born with enough intensity, to be hardly damaged.On the other hand, radius increases and timing chain case other constancies of volume everywhere, i.e., also increases therewith in the cross-sectional width of the inlet segment entrance of water channel, this advantageously reduces the pressure difference at pump outlet, cavitation erosion effect is reduced, the service life of timing chain case is extended.
Description
Technical field
The utility model is related to engine art, the timing chain case of especially a kind of engine.
Background technology
Currently, the shape in the pump outlet region of timing chain case is as shown in Figure 2.Engine is run under normal circumstances
Afterwards, can all there be more serious cavitation herein, this is because there are the pressure of water outlet height for centrifugal water pump configuration itself
In the pressure at center the phenomenon that.There are certain pressure differences between such two, are easy to cause coolant liquid itself and are easy gasification, and
And generate more serious impact herein to timing chain case, the gasification of coolant liquid has been aggravated to a certain extent, but will lead to gas
The exacerbation of erosion.And radius is usually 1- to the knuckle 1 of pump outlet side wall and water channel side wall connecting place in the prior art
2mm, thickness is smaller to be easy to be influenced and damaged by cavitation erosion.After generating cavitation erosion, impaired timing chain the cover can not only influence water pump
The function of itself can also have a degree of influence to the cooling effect of engine, directly result in the operation irregularity of engine.
Utility model content
The utility model provides a kind of influence that can reduce cavitation to pump outlet region, improves service life
The timing chain case of engine.
To achieve the goals above, the technical solution that the utility model is taken is：
The timing chain case of the engine, including pump outlet and the water channel that is connected to the pump outlet,
The radius of knuckle between the water channel side wall and the pump outlet side wall is not less than 4mm.
The entrance that the water channel is connected to the inlet segment of the pump outlet is less than outlet.
Using above-mentioned technical proposal, since the radius of knuckle is increased to not less than 4mm, transition face is more flat herein
Slow, thickness also greatly increases, and the impact of cavitation generation is born with enough intensity, to be hardly damaged.On the other hand,
Radius increases and timing chain case other constancies of volume everywhere, i.e. the cross-sectional width in the inlet segment entrance of water channel
Increase therewith, this advantageously reduces the pressure difference at pump outlet, reduces cavitation erosion effect, can more reduce cavitation to timing
The influence of chain case improves the service life of timing chain case.
Water channel uses inlet segment to be horn-like, entrance is less than to reduce space hold and adapt to the structure of engine
The structure of mouth.The structure enables the cross-sectional width of inlet segment entrance increase effect and becomes apparent from when increasing knuckle simultaneously, from
And the influence of the cavitation erosion effect further decreased.
Description of the drawings
Fig. 1 is the structural schematic diagram in the utility model pump outlet region；
Fig. 2 is the structural schematic diagram in prior art pump outlet region.
Label in figure be：
1. knuckle, 2. pump outlets, 3. water channels.
Specific implementation mode
Below against attached drawing, by the description of the embodiment, making to specific embodiment of the present invention further detailed
Explanation, with help those skilled in the art to the present utility model design, technical solution have it is more complete, accurate and deeply
Understanding.
As shown in Figure 1, the utility model provides a kind of timing chain case of engine, 3 side wall of water channel and water pump water outlet
The radius of the knuckle 1 of 2 side wall connecting places of mouth increases to 4mm.Transition face is gentler herein, and thickness also greatly increases, tool
There is enough intensity to bear the impact of cavitation generation, to be hardly damaged.On the other hand, 1 radius of knuckle increase and
Other constancies of volume everywhere of timing chain case also increase therewith in the cross-sectional width of the inlet segment entrance of water channel 3, this is conducive to
The pressure difference at pump outlet 2 is reduced, cavitation erosion effect is reduced.If cavitation is stronger, transition can also be further increased
The radius of fillet 1.
The inlet segment that water channel 3 is connected to pump outlet 2 as shown is horn-like, and the entrance of inlet segment is less than outlet.This
It is to adapt to adapt to the structure of engine, reduce 3 the space occupied of water channel.And this structure water channel 3 is improving knuckle 1
When, it enables the cross-sectional width of inlet segment entrance increase effect and becomes apparent from, the influence of the cavitation erosion effect to further decrease.
The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, as long as using changing for the various unsubstantialities that the utility model methodology and technical solution carry out
Into, or it is not improved by the utility model design and technical solution directly apply to other occasions, the utility model protect
Within the scope of shield.
Claims (1)
1. a kind of timing chain case of engine, including pump outlet and the water channel that is connected to the pump outlet, it is special
Sign is：The radius of the water channel side wall and the knuckle of the pump outlet side wall connecting place is not less than 4mm, the water
The entrance that road is connected to the inlet segment of the pump outlet is less than outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721756685.8U CN207920726U (en) | 2017-12-15 | 2017-12-15 | A kind of timing chain case of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721756685.8U CN207920726U (en) | 2017-12-15 | 2017-12-15 | A kind of timing chain case of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207920726U true CN207920726U (en) | 2018-09-28 |
Family
ID=63606900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721756685.8U Active CN207920726U (en) | 2017-12-15 | 2017-12-15 | A kind of timing chain case of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207920726U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439773A (en) * | 2022-01-05 | 2022-05-06 | 东风柳州汽车有限公司 | Water pump structure and engine |
-
2017
- 2017-12-15 CN CN201721756685.8U patent/CN207920726U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439773A (en) * | 2022-01-05 | 2022-05-06 | 东风柳州汽车有限公司 | Water pump structure and engine |
| CN114439773B (en) * | 2022-01-05 | 2023-07-18 | 东风柳州汽车有限公司 | Water pump structure and engine |
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