CN201723261U - Exhaust cam shaft for engine - Google Patents

Exhaust cam shaft for engine Download PDF

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Publication number
CN201723261U
CN201723261U CN2010202762308U CN201020276230U CN201723261U CN 201723261 U CN201723261 U CN 201723261U CN 2010202762308 U CN2010202762308 U CN 2010202762308U CN 201020276230 U CN201020276230 U CN 201020276230U CN 201723261 U CN201723261 U CN 201723261U
Authority
CN
China
Prior art keywords
exhaust cam
cam shaft
oil
vacuum pump
axis
Prior art date
Application number
CN2010202762308U
Other languages
Chinese (zh)
Inventor
单炯毅
Original Assignee
上海通用汽车有限公司
泛亚汽车技术中心有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 上海通用汽车有限公司, 泛亚汽车技术中心有限公司 filed Critical 上海通用汽车有限公司
Priority to CN2010202762308U priority Critical patent/CN201723261U/en
Application granted granted Critical
Publication of CN201723261U publication Critical patent/CN201723261U/en

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Abstract

The utility model discloses an exhaust cam shaft which comprises a shaft body and a vacuum pump driving head, wherein the vacuum pump driving head is installed at the first end of the shaft body; the shaft body is hollow and is provided with a plurality of shaft necks; one shaft neck is provided with at least one oil inlet hole, and the other shaft necks are respectively provided with an oil outlet hole; and at least one oil outlet hole is communicated with the vacuum pump driving head. Compared with the prior art, the exhaust cam shaft not only uses the way of supplying oil through the hole of the exhaust cam shaft for lubrication and reduces the design and the processing difficulty of oil ducts of an exhaust cam shaft cover and a cylinder cover, but also drives a vacuum pump, supplies oil for the vacuum pump and realizes more plentiful functions.

Description

The exhaust cam shaft that is used for motor
Technical field
The utility model relates to a kind of exhaust cam shaft that is used for motor.
Background technique
In motor, exhaust cam shaft is connected with timing gear, rotate by crank-driven by timing chain or belt, and change rotatablely moving of exhaust cam shaft into valve pump by cam, control is advanced, the switching of exhaust valve is controlled work by combustion process in the cylinder with this.
The design meeting of exhaust cam shaft directly influences power character, oil consumption and the discharging of motor.For exhaust cam shaft is lubricated, the axle journal of exhaust cam shaft need provide special oil duct, as is arranged in and then needs to bore the complexity that oilhole has increased cylinder cap on the cylinder cap.In order to satisfy special functional requirement, also need exhaust cam shaft to drive miscellaneous part sometimes.
A kind of exhaust cam shaft is arranged at present, as shown in Figure 1, its axis body hollow, the axis body two ends are respectively by screw thread 1 and steel ball 7 sealings, on the exhaust cam axle bearing, be drilled with oilhole 1,2,3,4,5, during operation, high-pressure oil enters mesopore from oil inlet hole 1, respectively from oil outlet 2,3, the oilhole at 4,5 places flows out, so that lubricating bearings.
But because the designing requirement of motor, some exhaust cam shaft need be finished more function.For example, if under the situation that needs driving device formula vacuum pump, the structure of exhaust cam shaft shown in Figure 1 can not drive the mechanical type vacuum pump and realize required function.
Also has another kind of exhaust cam shaft in the prior art, as shown in Figure 2.Exhaust cam shaft is equipped with the hexagon driving head at tail end, can provide vacuum servo for the car load braking by driving device formula vacuum pump.As figure shows, exhaust cam shaft integral body is solid construction.The lubricated of axle journal to exhaust cam shaft need import bearing with lubricant oil from covering punching, and this has increased the complexity of cylinder cap design undoubtedly.The exhaust cam shaft rear end is equipped with vacuum pump driving head 1, has processed oilhole 2 on the cylinder cap bearing, introduces machine oil from oilhole 2, and by the through hole in the vacuum pump driving head 1 oil is poured in the vacuum pump.
As can be seen, exhaust cam shaft shown in Figure 2 does not have central oilhole, need be from cylinder cap fuel feeding lubricating bearings, thus increased the design complexity of cylinder cap.
Therefore, be necessary to design a kind of novel exhaust camshaft, to overcome above-mentioned shortcoming.
The model utility content
At the defective of prior art, the purpose of this utility model provides a kind of exhaust cam shaft that can be lubricated easily under the condition that drives more equipment.
Exhaust cam shaft of the present utility model comprises axis body, vacuum pump driving head, described vacuum pump driving head is installed in first end of axis body, wherein, described axis body is a hollow, and have a plurality of axle journals on axis body, on an axle journal at least one oil inlet hole is set, other each axle journal is provided with an oil outlet, wherein, at least one oil outlet communicates with described vacuum pump driving head.
Preferably, described exhaust cam shaft connects the camshaft phase regulator at second end of axis body, and in described a plurality of oil outlets one communicates with the camshaft phase regulator.
Preferably, the camshaft phase regulator and and axis body between be provided with threaded piece.
Preferably, described threaded piece is a bolt.
Preferably, the number of described oil inlet hole is 4, evenly distributes along axle journal circle spacings 90 degree.
Preferably, utilize central bolt that the camshaft phase regulator is fixed on second end of exhaust cam shaft, and make the oil duct correspondence of the oil duct and the exhaust cam shaft of camshaft phase regulator.
With respect to prior art, exhaust cam shaft of the present utility model is not only lubricated by the mode of exhaust cam shaft mesopore fuel feeding, reduced the oil duct design and the difficulty of processing of exhaust cam shaft-cup and cylinder cap, and can also drive vacuum pump simultaneously and, realize more rich functions for its fuel feeding.
Description of drawings
Fig. 1 is a kind of structure sectional view of existing exhaust cam shaft;
Fig. 2 is the structure sectional view of another kind of existing exhaust cam shaft;
Fig. 3 is the structural perspective of the exhaust cam shaft of a kind of mode of execution of the utility model;
Fig. 4 is the sectional view of the exhaust cam shaft of a kind of mode of execution of the utility model.
Embodiment
Shown in Fig. 3,4, described exhaust cam shaft comprises axis body 10 and vacuum pump driving head 6.Described vacuum pump driving head is installed in first end of axis body.
Axle during described axis body 10 has formed a plurality of cams and axle journal on the axle, and the number of cam and axle journal, size all can be carried out different designs according to concrete application different.Axis body 10 can adopt various suitable materials to make, for example alloyed steel, carbon steel or the like.
Described axis body 10 is the axle of hollow, forms the oilhole of hollow.And, on axis body 10, have a plurality of axle journals, at least one oil inlet hole 3 is set on an axle journal, other each axle journal is provided with an oil outlet 2,4,5.Wherein, at least one oil outlet communicates with described vacuum pump driving head.As shown in Figure 4, an oil outlet 5 communicates with described vacuum pump driving head, so that drive described vacuum pump and provide lubricated for the vacuum pump driving head.
Preferably, described exhaust cam shaft connects camshaft phase regulator 20 at second end of axis body, and in described a plurality of oil outlets one communicates with camshaft phase regulator 20.More preferably, camshaft phase regulator 20 and and axis body 10 between be provided with threaded piece 1.By threaded piece 1, the oilhole of hollow is divided into two sections.The purpose of segmentation is to prevent that the lubricated pressure fluctuation of exhaust cam shaft neck from having influence on the oil pressure of front end camshaft phase regulator, in order to avoid the work of phase regulator is exerted an influence.Described threaded piece 1 can be that bolt or other have the parts of screw thread.
For camshaft phase regulator 20 is installed, the front end of exhaust cam shaft 10 has been processed oil groove and oil duct, so that be camshaft phase regulator 20 fuel feeding.Adopt central bolt that camshaft phase regulator 20 is fixed on the front end of exhaust cam shaft, by locating stud fixedly relative angle make the oil duct correspondence of oil duct and exhaust cam shaft 10 of camshaft phase regulator 20.Thereby the effect of camshaft phase regulator 20 is to change the intake and exhaust amount that the relative angle of the relative bent axle of exhaust cam shaft changes motor when motor moves, and plays and improves the purpose that engine performance reduces oil consumption.Threaded piece 1 simultaneously playing connection exhaust cam shaft and camshaft phase regulator also with the effect of front end oil duct and rear end oil channel sealing, the machine oil hydraulic of operation of cam axle phase regulator can not be subjected to exhaust cam shaft neck lubricating oil to rush down the influence of pressure like this, has guaranteed the proper functioning of phase regulator.
The oil outlet 2,3,4,5 that is provided with on axle journal links to each other with center oilhole 12, oil outlet the 2,3,4, the 5th, the unique oilhole on the corresponding axle journal.Oil inlet hole 3 then is four oilholes that are distributed on the same axle journal, evenly distributes along axle journal circle spacings 90 degree, and oil inlet hole links to each other with oil duct in the exhaust cam shaft-cup.The oil outlet that is communicated with vacuum pump driving head 6 can provide lubricant oil when driving the vacuum pump operation.
The quantity that it should be appreciated by those skilled in the art that axle journal can be according to the difference of concrete application and difference.Also can process the oil inlet hole of other quantity on same axle journal, for example, the number of described oil inlet hole is three, evenly distributes along axle journal circle spacings 120 degree.
Although the utility model is to be described by above-mentioned preferred implementation, its way of realization is not limited to above-mentioned mode of execution.Should be realized that: under the situation that does not break away from purport of the present invention, those skilled in the art can make different variations and modification to the present invention.

Claims (6)

1. an exhaust cam shaft is characterized in that, described exhaust cam shaft comprises axis body, vacuum pump driving head, and described vacuum pump driving head is installed in first end of axis body, wherein,
Described axis body is a hollow, and has a plurality of axle journals on axis body, on an axle journal at least one oil inlet hole is set, and other each axle journal is provided with an oil outlet, and wherein, at least one oil outlet communicates with described vacuum pump driving head.
2. exhaust cam shaft according to claim 1 is characterized in that, described exhaust cam shaft connects the camshaft phase regulator at second end of axis body, and in described a plurality of oil outlets one communicates with the camshaft phase regulator.
3. exhaust cam shaft according to claim 2 is characterized in that, the camshaft phase regulator and and axis body between be provided with threaded piece.
4. exhaust cam shaft according to claim 3 is characterized in that, described threaded piece is a bolt.
5. according to any one described exhaust cam shaft in the claim 1 to 4, it is characterized in that the number of described oil inlet hole is 4, evenly distribute along axle journal circle spacings 90 degree.
6. exhaust cam shaft according to claim 2 is characterized in that, utilizes central bolt that the camshaft phase regulator is fixed on second end of exhaust cam shaft, and makes the oil duct correspondence of the oil duct and the exhaust cam shaft of camshaft phase regulator.
CN2010202762308U 2010-07-26 2010-07-26 Exhaust cam shaft for engine CN201723261U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202762308U CN201723261U (en) 2010-07-26 2010-07-26 Exhaust cam shaft for engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202762308U CN201723261U (en) 2010-07-26 2010-07-26 Exhaust cam shaft for engine

Publications (1)

Publication Number Publication Date
CN201723261U true CN201723261U (en) 2011-01-26

Family

ID=43491580

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010202762308U CN201723261U (en) 2010-07-26 2010-07-26 Exhaust cam shaft for engine

Country Status (1)

Country Link
CN (1) CN201723261U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102684386A (en) * 2011-03-10 2012-09-19 湖南华强电气有限公司 Power generator of motor compressor for automobile air conditioner
CN102733874A (en) * 2012-06-12 2012-10-17 东风朝阳朝柴动力有限公司 Cam shaft with encoding disk and lubricating oil channel
CN106150582A (en) * 2015-04-03 2016-11-23 上汽通用五菱汽车股份有限公司 A kind of engine exhaust camshaft
CN106523062A (en) * 2016-12-26 2017-03-22 重庆小康工业集团股份有限公司 Cam shaft installing structure assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102684386A (en) * 2011-03-10 2012-09-19 湖南华强电气有限公司 Power generator of motor compressor for automobile air conditioner
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
CN102733874A (en) * 2012-06-12 2012-10-17 东风朝阳朝柴动力有限公司 Cam shaft with encoding disk and lubricating oil channel
CN106150582A (en) * 2015-04-03 2016-11-23 上汽通用五菱汽车股份有限公司 A kind of engine exhaust camshaft
CN106523062A (en) * 2016-12-26 2017-03-22 重庆小康工业集团股份有限公司 Cam shaft installing structure assembly

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110126

Termination date: 20190726