CN105351133A - Engine oil lubrication type high-pressure variable pump camshaft - Google Patents
Engine oil lubrication type high-pressure variable pump camshaft Download PDFInfo
- Publication number
- CN105351133A CN105351133A CN201510932377.5A CN201510932377A CN105351133A CN 105351133 A CN105351133 A CN 105351133A CN 201510932377 A CN201510932377 A CN 201510932377A CN 105351133 A CN105351133 A CN 105351133A
- Authority
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- China
- Prior art keywords
- oil
- cam
- eccentric cam
- oilhole
- axle journal
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention provides an engine oil lubrication type high-pressure variable pump camshaft, which comprises a camshaft body, flanging shaft sleeves, cylindrical shaft sleeves and cam rings, wherein the camshaft body comprise a gear, a plurality of eccentric cams and a plurality of shaft necks; an engine oil main oil gallery is arranged in the internal center axis of the camshaft body; the camshaft body is provided with an engine oil inlet, a gear lubrication oil hole, shaft neck lubrication oil galleries, eccentric cam lubricating oil holes and eccentric cam lubricating oil grooves from the driving end to the rear end in sequence; the engine oil inlet is communicated with the engine oil main oil gallery; the gear lubrication oil hole is communicated with the gear; the shaft neck lubrication oil galleries are used for lubricating the shaft necks; and the eccentric cam lubricating oil holes and the eccentric cam lubricating oil grooves are used for lubricating the eccentric cams. Compared with the prior art, the engine oil lubrication type high-pressure variable pump shaft has the following advantages that the oil supply amount and oil supply pressure of a large-flow fuel oil supply system can be met by the engine oil lubrication type high-pressure variable pump camshaft; meanwhile, the lubrication and friction statuses between the camshaft and a driven element are improved; and the durability and reliability of the camshaft are increased.
Description
Technical field
The invention belongs to engine fuel supply system technical field, especially relating to a kind of oil lubricating formula high pressure variable displacement pump camshaft undermining optimization high pressure variable pump lubrication mode for improving S-CAM grinder.
Background technique
Along with the increasingly stringent of Abgasgesetz, the oil-supply speed required for diesel engine, injection pressure are constantly climbed to a higher point, and improve constantly the requirement of plunger diameter, fuel feeding pretravel and lift.These charge oil pressures final, movement parts inertial force all will drop on cam, so the working strength of camshaft is very large.
In prior art, engine speed and improving constantly of load make the wear problem between cam and driven member seem more serious, and the wearing and tearing of parts will cause gap to increase, and cause kinematic accuracy decline, noise increase, affect oil supply performance.The quality of the lubrication state on camshaft and camshaft between each part directly affects the length in Injection Pump life-span, and then also can have an impact to the durability of motor and reliability.
Summary of the invention
In view of this, the present invention is intended to propose a kind of oil lubricating formula high pressure variable displacement pump camshaft, with the bearing capacity to improve camshaft, ensure fuel delivery and the charge oil pressure of high pressure variable displacement pump, improve lubrication and the Frotteurism of stress that each movement parts acts on each other and each contact position.
For achieving the above object, technological scheme of the present invention is achieved in that
A kind of oil lubricating formula high pressure variable displacement pump camshaft, comprise cam axis body, flanger bearing bush, cartridge sleeve and cam ring, described cam axis body comprises gear, multiple eccentric cam and multiple axle journal, the inside center axis place of described cam axis body is provided with machine oil main oil gallery, and described cam axis body is provided with the machine oil filler opening be communicated with machine oil main oil gallery, the gear lubrication oilhole be communicated with gear, the axle journal oil leab being used for lubricating axle journal, the eccentric cam oilhole being used for lubricating eccentric cam and eccentric cam oil groove to the back-end successively by drive end;
All be combined with cartridge sleeve outside described eccentric cam and axle journal, and be combined with flanger bearing bush between the cartridge sleeve of the journal engagement of the rear and front end of described cam axis body and axle journal; The axle journal oil leab of two axle journals of described cam axis body rear and front end is communicated with the cartridge sleeve oilhole in the flanger bearing bush oilhole on flanger bearing bush corresponding with it, cartridge sleeve corresponding in addition;
Also cam ring is combined with outside the cartridge sleeve coordinated with described eccentric cam; The eccentric cam oilhole that each eccentric cam is corresponding and eccentric cam oil groove, be all communicated with the cartridge sleeve oilhole in the described cartridge sleeve of corresponding matching with it, and be communicated with the cam ring oilhole of the cam ring of corresponding matching with it;
The cartridge sleeve oilhole of the cartridge sleeve cooperatively interacted aligns with the cam ring oilhole of cam ring; The flanger bearing bush oilhole of the described flanger bearing bush cooperatively interacted overlaps with the axle journal oil leab of axle journal and is communicated with;
The left and right sides of described cam ring is provided with cam ring oil groove, and the flange of described flanger bearing bush is provided with uniform flanger bearing bush oil groove radially.
Further, the cartridge sleeve outside described eccentric cam and eccentric cam are transition fit, and described cam ring and cartridge sleeve corresponding are with it interference fit; Described flanger bearing bush and be interference fit to corresponding axle journal, the cartridge sleeve of described flanger bearing bush and with it correspondence is transition fit.
Further, described cam ring oil groove and corresponding cam ring oilhole are in the same side, and described flanger bearing bush oil groove and corresponding flanger bearing bush oilhole are in the same side.
Further, the plane orthogonal at the cam ring oilhole on described cam ring and this cam ring oilhole place, is positioned at 1/4 place of this plane, and two planes up and down of cam ring are parallel.
Further, described cam axis body comprises the gear, axle journal one, eccentric cam one, eccentric cam two, eccentric cam three, axle journal two, eccentric cam four, eccentric cam five and the axle journal three that are provided with successively from front to back; Described eccentric cam one is coaxial with eccentric cam two, three and is connected, described eccentric cam four, five is coaxial and be connected as a single entity, and the central axis of the central axis of described eccentric cam one, two, three and eccentric cam four, five is about the central axis symmetry of camshaft.
Relative to prior art, the present invention has following advantage:
(1) described oil lubricating formula high pressure variable displacement pump camshaft can meet fuel delivery and the charge oil pressure of large discharge fuel oil supply system, meanwhile, improves the lubrication between camshaft and driven member and Frotteurism, improves durability and the reliability of camshaft;
(2) reasonable in design, easily realizes.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the overall structure schematic diagram of oil lubricating formula high pressure variable displacement pump camshaft described in the embodiment of the present invention;
Fig. 2 is the A-A face sectional view of Fig. 1;
Fig. 3 is the structural representation of cam axis body described in the embodiment of the present invention;
Fig. 4 is the B-B face sectional view of Fig. 3;
Fig. 5 is the plan view of flange bearing described in the embodiment of the present invention;
Fig. 6 is the C-C face sectional view of Fig. 5;
Fig. 7 is the structural representation of cartridge sleeve described in the embodiment of the present invention;
Fig. 8 is the side view of cam ring described in the embodiment of the present invention;
Fig. 9 is the plan view of cam ring described in the embodiment of the present invention.
Description of reference numerals:
1-cam axis body, 2-flanger bearing bush, 21-flanger bearing bush oilhole, 22-flanger bearing bush oil groove, 3-cam ring, 31-cam ring oilhole, 32-cam ring oil groove, 4-cartridge sleeve, 41-cartridge sleeve oilhole, 5-machine oil main oil gallery, 6-machine oil filler opening, 7-gear, 71-gear lubrication oilhole, 8-eccentric cam, 81-eccentric cam oil groove, 82-eccentric cam oilhole, 9-axle journal, 91-axle journal oil leab.
Embodiment
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
A kind of oil lubricating formula high pressure variable displacement pump camshaft, as shown in Figure 1 to 9, comprises cam axis body 1, flanger bearing bush 2, cartridge sleeve 4 and cam ring 3,
Described cam axis body 1 comprises gear 7, multiple eccentric cam 8 and multiple axle journal 9, the inside center axis place of described cam axis body 1 is provided with machine oil main oil gallery 5, and described cam axis body 1 is provided with the machine oil filler opening 6 be communicated with machine oil main oil gallery 5, the gear lubrication oilhole 71 be communicated with gear 7, the axle journal oil leab 91 being used for lubricating axle journal 9, the eccentric cam oilhole 82 being used for lubricating eccentric cam 8 and eccentric cam oil groove 81 to the back-end successively by drive end;
All be combined with cartridge sleeve 4 outside described eccentric cam 8 and axle journal 9, between the cartridge sleeve 4 coordinated with the axle journal 9 of the rear and front end of described cam axis body 1 and axle journal 9, be combined with flanger bearing bush 2; The axle journal oil leab 91 of two axle journals 9 of described cam axis body 1 rear and front end is communicated with the cartridge sleeve oilhole 41 in the flanger bearing bush oilhole 21 on flanger bearing bush 2 corresponding with it, cartridge sleeve 4 corresponding in addition;
Cam ring 3 is also combined with outside the cartridge sleeve 4 coordinated with described eccentric cam 8; The eccentric cam oilhole 82 of each eccentric cam 8 correspondence and eccentric cam oil groove 81, all be communicated with the cartridge sleeve oilhole 41 in the described cartridge sleeve 4 of corresponding matching with it, and be communicated with the cam ring oilhole 31 on the cam ring 3 of the cam ring 3 of corresponding matching with it;
Concrete, the cartridge sleeve 4 outside described eccentric cam 8 is transition fit with eccentric cam 8, and described cam ring 3 and cartridge sleeve 4 corresponding are with it interference fit; The cartridge sleeve oilhole 41 of the cartridge sleeve 4 cooperatively interacted aligns with the cam ring oilhole 31 of cam ring 3;
Concrete, described flanger bearing bush 2 and be interference fit to corresponding axle journal 9, the cartridge sleeve 4 of described flanger bearing bush 2 and with it correspondence is transition fit; The flanger bearing bush oilhole 21 of the described flanger bearing bush 2 cooperatively interacted overlaps with the axle journal oil leab 91 of axle journal 9 and is communicated with;
The left and right sides of described cam ring 3 is provided with cam ring oil groove 32, and the cam ring oilhole 31 of described cam ring oil groove 32 and described cam ring 3 is in the same side;
The flange of described flanger bearing bush 2 is provided with uniform flanger bearing bush oil groove 22 radially, and this flanger bearing bush oil groove 22 and the flanger bearing bush oilhole 21 on described flanger bearing bush 2 are in the same side.
Cam ring oilhole 31 on described cam ring 3 and the plane orthogonal at this cam ring oilhole 31 place, be positioned at 1/4 place of this plane, and two planes up and down of cam ring 3 are parallel;
The present embodiment comprises the gear 7, axle journal one, eccentric cam one, eccentric cam two, eccentric cam three, axle journal two, eccentric cam four, eccentric cam five and the axle journal three that are provided with successively from front to back; Described eccentric cam one is coaxial with eccentric cam two, three and is connected, described eccentric cam four, five is coaxial and be connected as a single entity, and the central axis of the central axis of described eccentric cam one, two, three and eccentric cam four, five is about the central axis symmetry of camshaft;
Described eccentric cam 8, flanger bearing bush 2 and cam ring 3 are all not only provided with oil leab and are also all provided with oil groove, effectively enhance greasy property, thus the wear resistance of camshaft under ensure that high workload intensity.
During use, machine oil enters the machine oil main oil gallery 5 of high pressure variable displacement pump camshaft from machine oil filler opening 6, and machine oil enters rapidly gear lubrication oilhole 71, axle journal oil leab 91, eccentric cam oilhole 82 and eccentric cam oil groove 81.Machine oil enters the oil leab of driven member by each oil duct of cam axis body 1, comprises flanger bearing bush oilhole 21 and flanger bearing bush oil groove 22, cartridge sleeve oilhole 41, cam ring oilhole 31, cam ring oil groove 32.
The cartridge sleeve 4 coordinated with described axle journal 9 has better wear resistance; effectively reduce because of the cam journal 9 reduced outer diameter amount caused of wearing and tearing; slow down surface abrasion speed; all the other cartridge sleeve 4 and cam ring 3 interference fit; directly fretting wear is born in cam operation process; available protecting cam ring 3 and eccentric cam 8, extend its working life.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. an oil lubricating formula high pressure variable displacement pump camshaft, is characterized in that: comprise cam axis body (1), flanger bearing bush (2), cartridge sleeve (4) and cam ring (3),
Described cam axis body (1) comprises gear (7), multiple eccentric cam (8) and multiple axle journal (9), the inside center axis place of described cam axis body (1) is provided with machine oil main oil gallery (5), described cam axis body (1) is provided with the machine oil filler opening (6) be communicated with machine oil main oil gallery (5) to the back-end successively by drive end, the gear lubrication oilhole (71) be communicated with gear (7), be used for lubricate axle journal (9) axle journal oil leab (91), be used for lubricate eccentric cam (8) eccentric cam oilhole (82) and eccentric cam oil groove (81),
Described eccentric cam (8) and axle journal (9) outside are all combined with cartridge sleeve 4, are combined with flanger bearing bush 2 (2) between the cartridge sleeve (4) coordinated and axle journal (9) with the axle journal (9) of the rear and front end of described cam axis body (1); The axle journal oil leab (91) of two axle journals (9) of described cam axis body (1) rear and front end is communicated with the cartridge sleeve oilhole (41) in the flanger bearing bush oilhole (21) on flanger bearing bush (2) corresponding with it, cartridge sleeve (4) corresponding in addition;
Cam ring (3) is also combined with outside the cartridge sleeve 4 coordinated with described eccentric cam (8); The eccentric cam oilhole (82) that each eccentric cam (8) is corresponding and eccentric cam oil groove (81), all be communicated with the cartridge sleeve oilhole (41) in the described cartridge sleeve (4) of corresponding matching with it, and be communicated with the cam ring oilhole (31) of the cam ring (3) of corresponding matching with it;
The cartridge sleeve oilhole (41) of the cartridge sleeve (4) cooperatively interacted aligns with the cam ring oilhole (31) of cam ring (3); The flanger bearing bush oilhole (21) of the described flanger bearing bush 2 cooperatively interacted overlaps with the axle journal oil leab (91) of axle journal (9) and is communicated with;
The left and right sides of described cam ring (3) is provided with cam ring oil groove (32), and the flange of described flanger bearing bush (2) is provided with uniform flanger bearing bush oil groove (22) radially.
2. oil lubricating formula high pressure variable displacement pump camshaft according to claim 1, it is characterized in that: the cartridge sleeve (4) in described eccentric cam (8) outside is transition fit with eccentric cam (8), and described cam ring (3) and cartridge sleeve (4) corresponding are with it interference fit; Described flanger bearing bush (2) and be interference fit to corresponding axle journal (9), the cartridge sleeve (4) of described flanger bearing bush (2) and with it correspondence is transition fit.
3. oil lubricating formula high pressure variable displacement pump camshaft according to claim 1, it is characterized in that: described cam ring oil groove (32) and corresponding cam ring oilhole (31) are in the same side, and described flanger bearing bush oil groove (22) and corresponding flanger bearing bush oilhole (21) are in the same side.
4. oil lubricating formula high pressure variable displacement pump camshaft according to claim 1, it is characterized in that: the plane orthogonal at the cam ring oilhole (31) on described cam ring (3) and this cam ring oilhole (31) place, be positioned at 1/4 place of this plane, and two planes up and down of cam ring (3) are parallel.
5. oil lubricating formula high pressure variable displacement pump camshaft according to claim 1, is characterized in that: described cam axis body (1) comprises the gear (7), axle journal one, eccentric cam one, eccentric cam two, eccentric cam three, axle journal two, eccentric cam four, eccentric cam five and the axle journal three that are provided with successively from front to back; Described eccentric cam one is coaxial with eccentric cam two, three and is connected, described eccentric cam four, five is coaxial and be connected as a single entity, and the central axis of the central axis of described eccentric cam one, two, three and eccentric cam four, five is about the central axis symmetry of camshaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510932377.5A CN105351133B (en) | 2015-12-11 | 2015-12-11 | A kind of oil lubricating formula high pressure variable pump camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510932377.5A CN105351133B (en) | 2015-12-11 | 2015-12-11 | A kind of oil lubricating formula high pressure variable pump camshaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105351133A true CN105351133A (en) | 2016-02-24 |
| CN105351133B CN105351133B (en) | 2017-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510932377.5A Active CN105351133B (en) | 2015-12-11 | 2015-12-11 | A kind of oil lubricating formula high pressure variable pump camshaft |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611251A (en) * | 2018-10-30 | 2019-04-12 | 中国北方发动机研究所(天津) | A kind of seat ring Split high pressure cam of injection pump axis |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0579429A (en) * | 1991-06-13 | 1993-03-30 | Yanmar Diesel Engine Co Ltd | Lubrication device of diesel engine |
| CN2567349Y (en) * | 2002-09-06 | 2003-08-20 | 重庆宗申技术开发研究有限公司 | Internet oil-pipe lubricating device of camshaft of motorcycle |
| CN2602191Y (en) * | 2003-01-23 | 2004-02-04 | 烟台冰轮股份有限公司 | Twin-cylinder acting rotor-piston pump |
| CN2921300Y (en) * | 2006-06-27 | 2007-07-11 | 奇瑞汽车有限公司 | Vehicle engine camshaft lubricating structure |
| CN201619642U (en) * | 2010-03-19 | 2010-11-03 | 罗黄斌 | Motorcycle camshaft lubricating device |
| CN102140948A (en) * | 2011-03-29 | 2011-08-03 | 奇瑞汽车股份有限公司 | Eccentric shaft of variable valve lift automobile engine |
| CN202510182U (en) * | 2012-01-29 | 2012-10-31 | 长城汽车股份有限公司 | Camshaft bushing and camshaft with same |
| CN102787875A (en) * | 2012-08-23 | 2012-11-21 | 东风汽车公司 | Engine camshaft with oil storage tank |
| CN204186442U (en) * | 2014-10-29 | 2015-03-04 | 阿尔特汽车技术股份有限公司 | Camshaft lubrication oil channel structures |
-
2015
- 2015-12-11 CN CN201510932377.5A patent/CN105351133B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0579429A (en) * | 1991-06-13 | 1993-03-30 | Yanmar Diesel Engine Co Ltd | Lubrication device of diesel engine |
| CN2567349Y (en) * | 2002-09-06 | 2003-08-20 | 重庆宗申技术开发研究有限公司 | Internet oil-pipe lubricating device of camshaft of motorcycle |
| CN2602191Y (en) * | 2003-01-23 | 2004-02-04 | 烟台冰轮股份有限公司 | Twin-cylinder acting rotor-piston pump |
| CN2921300Y (en) * | 2006-06-27 | 2007-07-11 | 奇瑞汽车有限公司 | Vehicle engine camshaft lubricating structure |
| CN201619642U (en) * | 2010-03-19 | 2010-11-03 | 罗黄斌 | Motorcycle camshaft lubricating device |
| CN102140948A (en) * | 2011-03-29 | 2011-08-03 | 奇瑞汽车股份有限公司 | Eccentric shaft of variable valve lift automobile engine |
| CN202510182U (en) * | 2012-01-29 | 2012-10-31 | 长城汽车股份有限公司 | Camshaft bushing and camshaft with same |
| CN102787875A (en) * | 2012-08-23 | 2012-11-21 | 东风汽车公司 | Engine camshaft with oil storage tank |
| CN204186442U (en) * | 2014-10-29 | 2015-03-04 | 阿尔特汽车技术股份有限公司 | Camshaft lubrication oil channel structures |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611251A (en) * | 2018-10-30 | 2019-04-12 | 中国北方发动机研究所(天津) | A kind of seat ring Split high pressure cam of injection pump axis |
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| Publication number | Publication date |
|---|---|
| CN105351133B (en) | 2017-10-27 |
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