CN201526348U - Engine timing gear drive mechanism - Google Patents
Engine timing gear drive mechanism Download PDFInfo
- Publication number
- CN201526348U CN201526348U CN2009202279998U CN200920227999U CN201526348U CN 201526348 U CN201526348 U CN 201526348U CN 2009202279998 U CN2009202279998 U CN 2009202279998U CN 200920227999 U CN200920227999 U CN 200920227999U CN 201526348 U CN201526348 U CN 201526348U
- Authority
- CN
- China
- Prior art keywords
- gear
- idling
- idle
- helical
- injection pump
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to an engine timing gear drive mechanism which comprises a camshaft gear, a crankshaft gear, a first idling gear, a second idling gear, a third idling gear assembly and an injection pump gear, and is made of 38CrMoAl, wherein the camshaft gear, the crankshaft gear, the first idling gear and the second idling gear are helical gears; the third idling gear assembly consists of a helical gear and a straight gear; the injection pump gear is a straight gear; the helical gears, namely the camshaft gear, the crankshaft gear, the first idling gear, the second idling gear and the helical gear of the third idling gear assembly are meshed in sequence; the helical gear and the straight gear of the third idling gear assembly are fixed on one axle; and the straight gear of the third idling gear assembly is meshed with the injection pump gear. When a group of engine gears in coordination are in idling operation, the noise is reduced from 81.73dB to 79.2 dB with average reduction of 2.5 dB, thus achieving the purpose of reducing noise.
Description
Technical field
The utility model relates to a kind of timing gear ofr automobile engine driving mechanism.
Background technique
Timing gear ofr automobile engine assembling back noise is big in the prior art, the gear that designs because of original gear system all is spur gear (because of fuel injection pump gear can not have axial force), gear is big at assembling rear engine noise, influence the complete machine effect of motor, cause the production engine repair rate big, the manufacture cost height.
Summary of the invention
The purpose of this utility model: by changing the gear shape design, make gear in engagement process, reach the purpose that reduces noise, improve the complete machine quality of motor.
The technical solution of the utility model: a kind of engine timing gear driving mechanism, comprise camshaft gear wheel, crankshaft gear, first idle gear, second idle gear, the 3rd idle gear component and fuel injection pump gear, its material is 38CrMoAl; It is characterized in that: camshaft gear wheel, crankshaft gear, first idle gear, second idle gear are helical gear, the 3rd idle gear component is combined by a helical gear and a spur gear, fuel injection pump gear is a spur gear, the helical gear of camshaft gear wheel, crankshaft gear, first idle gear, second idle gear, the 3rd idle gear component meshes successively, the spur gear of the helical gear of the 3rd idle gear component and the 3rd idle gear component is fixed on the axle, the spur gear of the 3rd idle gear component and fuel injection pump gear engagement.
Beneficial effect: this drive mechanism, make one group of engine timing gear in engagement process under idling operation, noise is reduced to 79.2dB by original 81.73dB, the average 2.5dB that reduces, reach the purpose that reduces noise, reduced the repair rate of motor, reduced manufacture cost, promoted the complete machine quality of motor, made product satisfy the above emission standard of Europe III.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation (enlarged view) of the 3rd idle gear component shown in Fig. 1.
Embodiment
Shown in Fig. 1,2, it is as follows to further describe the utility model: a kind of engine timing gear driving mechanism, comprise camshaft gear wheel 6, crankshaft gear 5, first idle gear 7, second idle gear 4, the 3rd idle gear component 3 and fuel injection pump gear 2, its material is 38CrMoAl; Camshaft gear wheel 6, crankshaft gear 5, first idle gear 7, second idle gear 4 are helical gear, the 3rd idle gear component 3 is combined by a helical gear 9 and a spur gear 8, fuel injection pump gear 2 is a spur gear, the helical gear 9 of camshaft gear wheel 6, crankshaft gear 5, first idle gear 7, second idle gear 4, the 3rd idle gear component meshes successively, the helical gear 9 of the 3rd idle gear component and the spur gear 8 of the 3rd idle gear component are fixed on the axle 10, the spur gear 8 of the 3rd idle gear component and fuel injection pump gear 2 engagements.
Claims (1)
1. an engine timing gear driving mechanism comprises camshaft gear wheel, crankshaft gear, first idle gear, second idle gear, the 3rd idle gear component and fuel injection pump gear, and its material is 38CrMoAl; It is characterized in that: camshaft gear wheel, crankshaft gear, first idle gear, second idle gear are helical gear, the 3rd idle gear component is combined by a helical gear and a spur gear, fuel injection pump gear is a spur gear, the helical gear of camshaft gear wheel, crankshaft gear, first idle gear, second idle gear, the 3rd idle gear component meshes successively, the spur gear of the helical gear of the 3rd idle gear component and the 3rd idle gear component is fixed on the axle, the spur gear of the 3rd idle gear component and fuel injection pump gear engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202279998U CN201526348U (en) | 2009-09-05 | 2009-09-05 | Engine timing gear drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202279998U CN201526348U (en) | 2009-09-05 | 2009-09-05 | Engine timing gear drive mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201526348U true CN201526348U (en) | 2010-07-14 |
Family
ID=42517636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202279998U Expired - Fee Related CN201526348U (en) | 2009-09-05 | 2009-09-05 | Engine timing gear drive mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201526348U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337965A (en) * | 2011-09-29 | 2012-02-01 | 安徽江淮汽车股份有限公司 | Timing gear transmission mechanism of common rail diesel engine |
-
2009
- 2009-09-05 CN CN2009202279998U patent/CN201526348U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337965A (en) * | 2011-09-29 | 2012-02-01 | 安徽江淮汽车股份有限公司 | Timing gear transmission mechanism of common rail diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20150905 |
|
| EXPY | Termination of patent right or utility model |