CN1621672A - Cylinder cover of internal combustion engine - Google Patents
Cylinder cover of internal combustion engine Download PDFInfo
- Publication number
- CN1621672A CN1621672A CN 200410090433 CN200410090433A CN1621672A CN 1621672 A CN1621672 A CN 1621672A CN 200410090433 CN200410090433 CN 200410090433 CN 200410090433 A CN200410090433 A CN 200410090433A CN 1621672 A CN1621672 A CN 1621672A
- Authority
- CN
- China
- Prior art keywords
- valve mechanism
- detector
- mechanism cover
- cylinder head
- combustion engine
- 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.)
- Granted
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention aims to provide a head cover for an internal combustion engine, to which a rotation detector can be mounted without impairing maintenance property and detection accuracy. The metal head cover 1 is tightened to a cylinder head 7 of an internal combustion engine with a bolt 9 so that an elastic member (a seal member 6) is interposed therebetween, and has a mounting part of the detector 16 for detecting rotation of a camshaft 12. In the head cover 1, a boss part 8 into which the bolt is inserted is directly brought into contact with the cylinder head, and the boss part is connected with a mounting part of the detector.
Description
Technical field
The present invention relates to a kind of valve mechanism cover of internal-combustion engine, particularly be installed on the cylinder head, and have the valve mechanism cover of assembly department of the detector of the rotation that is used to detect camshaft across elastic member.
Background technique
As the detection device of the angle of rotation of crankshaft etc., technique known is to utilize electromagnetic type non-contact detection device to detect to be located at and crankshaft the passing through of projection of the pulse gear of the axle head of the camshaft of rotation synchronously.And, the fixing part of detector is set in the valve mechanism cover that covers valve mechanism for the maintenance service that improves detector, this technology is also by known (for example, with reference to patent documentation 1).
Patent documentation 1 spy opens flat 10-37835 communique (Fig. 7)
But usually valve mechanism cover is to be installed on the cylinder head by the sealed member that is made of rubber material etc.The sealing parts will seal between valve mechanism cover and the cylinder head by resiliently deformable, so the structure that proposes according to above-mentioned communique is fixed on rotation detecting device on the valve mechanism cover and follows the distortion of sealed member and displacement.This displacement involves the generation of positional error of the detector face of pulse gear and detector, even slight error also can be brought harmful effect to testing precision.
Summary of the invention
The present invention proposes in order to solve above-mentioned prior art problems, and its main purpose is to provide a kind of valve mechanism cover of internal-combustion engine, and it constitutes and can under the situation that does not influence maintenance service and testing precision rotation detecting device be installed.
In order to solve above-mentioned problem, one of the present invention's metallic valve mechanism cover 1, it is fixed in the cylinder head 7 of internal-combustion engine across elastic member (sealed member 6) by bolt 9, and assembly department with detector 16 of the rotation that detects camshaft 12, the boss part 8 that is used to insert described bolt is arranged to directly contact with described cylinder head, and this boss part is connected with the assembly department of described detector.
The present invention's two utilizes muscle 14 that the fitting seat 13 of fixing described detector is connected with described boss part.
The present invention's three, this valve mechanism cover has the circular outer periphery sealing surface that is oppositely arranged with described cylinder head side, in the described boss part of the arranged outside of this periphery sealing surface, the assembly department of described detector is set at the outer wall of the valve mechanism cover that is provided with described periphery sealing surface.
Structure one of according to the present invention, the assembly department of detector is arranged on continuously with cylinder head and is on the boss part of Metal Contact, so can improve the installation rigidity of detector, improves testing precision.And two structure according to the present invention can further improve rigidity under the situation of not gaining in weight.In addition, three structure according to the present invention, can be boss part near the assembly department that is configured in detector, so improve the rigidity of the assembly department of detector, can be installed in detector on the sidewall of the valve mechanism cover that fixedly rigidity is high, thus testing precision improved, and new assembly department need not be set, so can simplified structure, improve space efficiency.
Therefore, according to the present invention, in the valve mechanism cover of detector is installed, can bring into play to have the higher maintenance service and the effect of testing precision concurrently.
Description of drawings
Fig. 1 is the worm's eye view of valve mechanism cover of the present invention.
Fig. 2 is the front view that is illustrated in the state that valve mechanism cover has been installed on the cylinder head.
Fig. 3 is the plan view that is illustrated in the state that valve mechanism cover has been installed on the cylinder head.
Symbol description
1 valve mechanism cover; 6 sealed members (elastic member); 7 cylinder head; 8 boss part; 11 protuberances; 12 camshafts; 13 fitting seats (assembly department); 16 detectors.
Embodiment
Below, the mode of execution that present invention will be described in detail with reference to the accompanying.
Fig. 1 represents the lower surface (one side that contacts with cylinder head) of the valve mechanism cover of formation according to the present invention.This valve mechanism cover 1 is applied in the cylinder injection internal combustion engine of firing chamber direct fuel injection, constitutes the top central part opening 2 from valve mechanism cover 1 of the epirelief wheel seat (upper cam holder) (not shown) that is fixed with Fuelinjection nozzle is exposed.
The ring-type that is formed for delimiting cavity on valve mechanism cover 1 is heaved portion 3, and this cavity surrounds the opening 2 that the assembly department that makes Fuelinjection nozzle exposes.This valve mechanism cover 1 as shown in Figure 2, at the peripheral groove 4,5 of the following ora terminalis that is formed at periphery wall and inner circle wall section configuration being installed is the sealed member 6 (Fig. 2) of rectangle, under the state that makes its contact cylinder head 7 (and epirelief wheel seat) upper surface, for example be formed at the boss part 8 at general four jiaos of places in the periphery wall outside, thereby be engaged on the cylinder head 7 under the state that portion is sealed within it with bolt.
At the lower surface of the boss part 8 in mounting groove 5 outsides of the outer circumferential side sealed member 6 of the opening surface that is positioned at valve mechanism cover 1, form the protuberance 11 of the through hole 10 of the fixing bolt 9 that surrounds relative cylinder head 7.The lower surface of this protuberance 11 forms flat condition, directly contacts the upper surface of cylinder head 7.
In valve mechanism cover 1 be provided with the parallel sidewall outer surface of a side camshaft 12 that makes timing chain that crankshaft and camshaft be connected, simultaneously according to shown in Figure 3, form the fitting seat 13 of rotation detecting device.This fitting seat 13 directly is being connected by muscle 14 with the part that is provided with boss part 8.
Insert fixing bolts 9 at through hole 10, and when screwing in the interior threaded hole 15 that is fixed on cylinder head 7, at first sealed member 6 is being pushed compressive strain by the bottom of cylinder head 7 and groove 5 to boss part 8.Herein, the height dimension H of the protuberance 11 of boss part 8 is set to and produces the suitable seal counter-force, so that directly contact the upper surface of cylinder head 7 when sealed member 6 carries out compressive strain.Therefore, when the fastening fixing bolt 9 of moment according to the rules, protuberance 11 crimping cylinder head 7, valve mechanism cover 1 by firm fixation on cylinder head 7.
Like this, be the position of Metal Contact with cylinder head 7, promptly in abutting connection with the position of boss part 8, the fitting seat 13 of the detector that is connected with boss part 8 is set, so can improve the installation rigidity of the relative valve mechanism cover 1 of detector 16 self, can improve the mutual alignment precision of detector face 16a with the pulse gear 17 of the axle head that is located at camshaft 12 of detector 16 simultaneously.Particularly, can further improve rigidity by for example using muscle 14 connection seats 13 and boss part 8.In addition, at the sealing surface of the outer circumferential side of valve mechanism cover 1 protuberance 11 is set, the installation axis of detector 16 extends in the direction of intersecting with sealing surface, thus can improve the degree of closeness of relative detector assembly department, thus guarantee good maintenance service.
In addition, preferred valve mechanism cover 1 directly contacts with cylinder head 7, but also can be across the little sealed member of resiliently deformables such as metal o-ring.And, valve mechanism cover 1 so long as fabricated metalss such as aluminum alloy or magnesium alloy get final product.
Claims (3)
1. the metallic valve mechanism cover (1) of an internal-combustion engine, it is fixed in the cylinder head (7) of internal-combustion engine by bolt (9) across elastic member (6), and has the assembly department of the detector (16) of the rotation that is used to detect camshaft (12), it is characterized in that,
The boss part (8) that is used to insert described bolt (9) is arranged to directly contact with described cylinder head (7), and this boss part (8) is connected with the assembly department of described detector (16).
2. the valve mechanism cover of internal-combustion engine according to claim 1 is characterized in that, utilizes muscle (14) that the fitting seat (13) of fixing described detector (16) is connected with described boss part (8).
3. the valve mechanism cover of internal-combustion engine according to claim 1 and 2, it is characterized in that, this valve mechanism cover has the circular outer periphery sealing surface that is oppositely arranged with described cylinder head (7) side, foreign side at this periphery sealing surface is provided with described boss part, and the assembly department (13) of described detector (16) is set at the outer wall of the valve mechanism cover that is provided with described periphery sealing surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003395756 | 2003-11-26 | ||
| JP2003395756A JP4294453B2 (en) | 2003-11-26 | 2003-11-26 | Internal combustion engine head cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1621672A true CN1621672A (en) | 2005-06-01 |
| CN1306159C CN1306159C (en) | 2007-03-21 |
Family
ID=34721441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100904337A Expired - Fee Related CN1306159C (en) | 2003-11-26 | 2004-11-18 | Cylinder cover of internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4294453B2 (en) |
| CN (1) | CN1306159C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101631946B (en) * | 2007-05-16 | 2011-06-22 | 本田技研工业株式会社 | Head cover for internal combustion engine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4321504B2 (en) | 2005-07-25 | 2009-08-26 | 日産自動車株式会社 | Cam angle sensor mounting structure for internal combustion engine |
| US20090126674A1 (en) * | 2005-12-14 | 2009-05-21 | Yamaha Hatsudoki Kabushiki Kaisha | Engine and vehicle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06173758A (en) * | 1992-12-09 | 1994-06-21 | Nissan Motor Co Ltd | Attachment structure for cylinder head cover |
| JP2751771B2 (en) * | 1992-12-25 | 1998-05-18 | 三菱自動車工業株式会社 | Cylinder block for in-line multi-cylinder engine |
| JP3261313B2 (en) * | 1996-07-24 | 2002-02-25 | 本田技研工業株式会社 | Engine rotation detector |
| JPH10220684A (en) * | 1997-01-31 | 1998-08-21 | Suzuki Motor Corp | Timing chain cover structure for engine |
| JPH11324846A (en) * | 1998-05-11 | 1999-11-26 | Yamaha Motor Co Ltd | Internal combustion engine |
| JP4032209B2 (en) * | 2001-01-25 | 2008-01-16 | スズキ株式会社 | Power steering pump connection structure |
-
2003
- 2003-11-26 JP JP2003395756A patent/JP4294453B2/en not_active Expired - Fee Related
-
2004
- 2004-11-18 CN CNB2004100904337A patent/CN1306159C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101631946B (en) * | 2007-05-16 | 2011-06-22 | 本田技研工业株式会社 | Head cover for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4294453B2 (en) | 2009-07-15 |
| JP2005155476A (en) | 2005-06-16 |
| CN1306159C (en) | 2007-03-21 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20070321 Termination date: 20141118 |
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| EXPY | Termination of patent right or utility model |