CN202325947U - High-pressure fuel pump driving mechanism for direct injection spark ignition engine - Google Patents
High-pressure fuel pump driving mechanism for direct injection spark ignition engine Download PDFInfo
- Publication number
- CN202325947U CN202325947U CN2011204301531U CN201120430153U CN202325947U CN 202325947 U CN202325947 U CN 202325947U CN 2011204301531 U CN2011204301531 U CN 2011204301531U CN 201120430153 U CN201120430153 U CN 201120430153U CN 202325947 U CN202325947 U CN 202325947U
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- Prior art keywords
- fuel pump
- pressure fuel
- high pressure
- driving mechanism
- live axle
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Abstract
The utility model belongs to the technical field of a direct injection spark ignition engine and in particular relates to a high-pressure fuel pump driving mechanism for a direct injection spark ignition engine. The high-pressure fuel pump driving mechanism comprises a cam shaft arranged on an cylinder cover of the direct injection spark ignition engine, one end of the cam shaft is connected with a driving shaft, the driving shaft is a stepped shaft with a cam structure, a high-pressure fuel pump is arranged in the vertical direction of the axis of the driving shaft, and a tappet end face connected with the high-pressure fuel pump is contacted with the cam structure. by means of the high-pressure fuel pump driving mechanism, a high-pressure fuel pump driving structure is arranged at the rear end of the direct injection spark ignition engine, limit of the length of the cam shaft and a cylinder cover structure is avoided, and service life of the cam shaft can be effectively prolonged.
Description
Technical field
The utility model belongs to the in-cylinder direct fuel-injection engine technical field, is specifically related to in-cylinder direct fuel-injection engine and uses the high pressure fuel pump driving mechanism.
Background technique
Present existing in-cylinder direct fuel-injection engine all need be installed high pressure fuel pump, and the fuel oil of high pressure is provided for motor.In the existing technology, high pressure fuel pump generally is installed in two positions, and a position is mounted in around the train of motor head; Rely on the rotation of belt pulley or sprocket wheel to drive the high pressure fuel pump work, the main defective that exists is that high pressure fuel pump is far away apart from the oil sprayer on the cylinder head; Required tubing length is very long; In the course of the work, often need on high pressure fuel pump, increase a drive wheel, complex structure; Another position is the engine cylinder cap place; Be arranged in the middle part of the camshaft on the cylinder head, rely on the rotation of camshaft to drive the high pressure fuel pump work, the main defective that exists is; Need be at the middle part of camshaft mounting cam; And because the volume of tappet is bigger, cause the internal structure of cylinder head a lot of restrictions to occur, influence the installation of other parts.
Summary of the invention
The purpose of the utility model is in order to overcome the deficiency of existing technology, provide a kind of simple in structure, strength can effectively be transmitted, do not receive the in-cylinder direct fuel-injection engine of the internal structure restriction of cylinder head to use the high pressure fuel pump driving mechanism.
For realizing above-mentioned purpose; The in-cylinder direct fuel-injection engine of the utility model design is used the high pressure fuel pump driving mechanism; Comprise the camshaft that is installed on the in-cylinder direct fuel-injection engine cylinder head, an end of said camshaft is connected with live axle, and said live axle is the multidiameter shaft that has cam structure; On the Vertical direction of the axis of live axle, be provided with high pressure fuel pump, the tappet end face that connects on the said high pressure fuel pump contacts with described cam structure.
In technique scheme, be set with the live axle support on the said live axle, said live axle support is installed in the end of cylinder head.
In technique scheme, the tappet outside that connects on the said high pressure fuel pump is set with fuel pump bracket.
In technique scheme, said fuel pump bracket is fixedly connected with the live axle support.
In technique scheme, said fuel pump bracket is provided with through hole, and said tappet is positioned at this through hole.
In technique scheme, said tappet is a roller machinery tappet.
The rear end of the camshaft of the utility model on the in-cylinder direct fuel-injection engine cylinder head increases a live axle; Live axle as high pressure fuel pump; The rear end of the camshaft on the in-cylinder direct fuel-injection engine cylinder head directly is connected with live axle; Camshaft drive high pressure fuel pump live axle rotates together like this, and a cam structure is set on the high pressure fuel pump live axle, and cam structure also rotates together during the high pressure fuel pump drive shaft turns; Do the piston motion in the corresponding through hole of roller machinery tappet on the high pressure fuel pump support of this cam drive high pressure fuel pump, the piston motion of roller machinery tappet is that high pressure fuel pump provides reliable motion-promotion force; The utility model is arranged in the rear end of in-cylinder direct fuel-injection engine with the high pressure fuel pump driving structure, does not receive the length of camshaft and the restriction of air cylinder head structure, and can effectively improve the life-span of camshaft.
Description of drawings
Fig. 1 is the perspective structure schematic representation of the high pressure fuel pump driving mechanism of the utility model;
Fig. 2 is the assembly structure schematic representation of the high pressure fuel pump driving mechanism of the utility model;
Among the figure: 1, cylinder head; 2, camshaft (rear end of 2-1, camshaft); 3, live axle (3-1, cam structure; 3-2, live axle support); 4, high pressure fuel pump (4-1, tappet); 5, fuel pump bracket (5-1 through hole).
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to describe in detail:
In-cylinder direct fuel-injection engine as depicted in figs. 1 and 2 is used the high pressure fuel pump driving mechanism; Comprise the camshaft 2 that is installed on the in-cylinder direct fuel-injection engine cylinder head 1; One end of camshaft 2 is connected with live axle 3; Live axle 3 is for having the multidiameter shaft of cam structure 3-1, on the Vertical direction of the axis of live axle 3, is provided with high pressure fuel pump 4, and the tappet 4-1 end face that connects on the high pressure fuel pump 4 contacts with described cam structure 3-1; Be set with live axle support 3-2 on the live axle 3, live axle support 3-2 is installed in the end of cylinder head 1.
The tappet 4-1 outside that connects on the high pressure fuel pump 4 is set with fuel pump bracket 5, and fuel pump bracket 5 is fixedly connected with live axle support 3-2.Fuel pump bracket 5 is provided with through hole 5-1, and tappet 4-1 is positioned at this through hole.Tappet 4-1 is a roller machinery tappet.Tappet is as the driven member of cam structure 3-1, and its effect is a push rod of passing to high pressure fuel pump 4 with from motion and the active force of cam structure 3-1, also bears lateral force that cam structure 3-1 applied simultaneously and it is passed to cylinder head.Contact with cam structure 3-1 during tappet 4-1 work.
The utility model is when work; The rear end 2-1 of in-cylinder direct fuel-injection engine cylinder head 1 OHC 2 is connected with high pressure fuel pump live axle 3; Camshaft 2 drives high pressure fuel pump live axle 3 and rotates together; A cam structure 3-1 is set on the high pressure fuel pump live axle 3; Cam structure 3-1 also rotated together when high pressure fuel pump live axle 3 rotated, and did the piston motion among the corresponding through hole 5-1 of roller machinery tappet 4-1 on high pressure fuel pump support 5 of cam structure 3-1 driving high pressure fuel pump 4, thereby for high pressure fuel pump 4 power was provided.
Obviously; Those skilled in the art can carry out various changes and modification to the utility model and not break away from the spirit and the scope of the utility model; These conversion also belong within the scope of the utility model claim and equivalent technologies thereof, certainly the utility model also be intended to comprise these change and modification interior.
The content of not doing in this specification to describe in detail belongs to related domain professional and technical personnel's known prior art.
Claims (6)
1. an in-cylinder direct fuel-injection engine is used the high pressure fuel pump driving mechanism; Comprise the camshaft (2) that is installed on the in-cylinder direct fuel-injection engine cylinder head (1); It is characterized in that: an end of said camshaft (2) is connected with live axle (3); Said live axle (3) is for having the multidiameter shaft of cam structure (3-1), on the Vertical direction of the axis of live axle (3), is provided with high pressure fuel pump (4), and said high pressure fuel pump (4) is gone up tappet (4-1) end face that connects and contacted with described cam structure (3-1).
2. in-cylinder direct fuel-injection engine according to claim 1 is used the high pressure fuel pump driving mechanism, it is characterized in that: be set with live axle support (3-2) on the said live axle (3), said live axle support (3-2) is installed in the end of cylinder head (1).
3. in-cylinder direct fuel-injection engine according to claim 2 is used the high pressure fuel pump driving mechanism, it is characterized in that: said high pressure fuel pump (4) is gone up tappet (4-1) outside that connects and is set with fuel pump bracket (5).
4. in-cylinder direct fuel-injection engine according to claim 3 is used the high pressure fuel pump driving mechanism, it is characterized in that: said fuel pump bracket (5) is fixedly connected with live axle support (3-2).
5. use the high pressure fuel pump driving mechanism according to claim 3 or 4 described in-cylinder direct fuel-injection engines, it is characterized in that: said fuel pump bracket (5) is provided with through hole (5-1), and said tappet (4-1) is positioned at this through hole.
6. use the high pressure fuel pump driving mechanism according to claim 3 or 4 described in-cylinder direct fuel-injection engines, it is characterized in that: said tappet (4-1) is roller machinery tappet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204301531U CN202325947U (en) | 2011-11-03 | 2011-11-03 | High-pressure fuel pump driving mechanism for direct injection spark ignition engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204301531U CN202325947U (en) | 2011-11-03 | 2011-11-03 | High-pressure fuel pump driving mechanism for direct injection spark ignition engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202325947U true CN202325947U (en) | 2012-07-11 |
Family
ID=46437930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204301531U Expired - Lifetime CN202325947U (en) | 2011-11-03 | 2011-11-03 | High-pressure fuel pump driving mechanism for direct injection spark ignition engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202325947U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863911A (en) * | 2016-05-18 | 2016-08-17 | 奇瑞汽车股份有限公司 | Transmission system of high pressure oil pump of diesel engine and assembling method thereof |
| CN114542344A (en) * | 2022-02-21 | 2022-05-27 | 重庆长安汽车股份有限公司 | Driving mechanism of high-pressure fuel pump |
| CN115234418A (en) * | 2022-06-17 | 2022-10-25 | 中国民航大学 | Horizontal opposed two-stroke aero-engine oil pump driving mechanism for burning negative carbon fuel |
-
2011
- 2011-11-03 CN CN2011204301531U patent/CN202325947U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863911A (en) * | 2016-05-18 | 2016-08-17 | 奇瑞汽车股份有限公司 | Transmission system of high pressure oil pump of diesel engine and assembling method thereof |
| CN105863911B (en) * | 2016-05-18 | 2018-11-16 | 奇瑞汽车股份有限公司 | A kind of transmission system and its assemble method of diesel engine high-pressure oil pump |
| CN114542344A (en) * | 2022-02-21 | 2022-05-27 | 重庆长安汽车股份有限公司 | Driving mechanism of high-pressure fuel pump |
| CN115234418A (en) * | 2022-06-17 | 2022-10-25 | 中国民航大学 | Horizontal opposed two-stroke aero-engine oil pump driving mechanism for burning negative carbon fuel |
| CN115234418B (en) * | 2022-06-17 | 2023-09-26 | 中国民航大学 | Oil pump driving mechanism of horizontally opposed two-stroke aeroengine for burning negative carbon fuel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |