CN103403332A - Internal combustion engine head-cover structure - Google Patents
Internal combustion engine head-cover structure Download PDFInfo
- Publication number
- CN103403332A CN103403332A CN2012800100297A CN201280010029A CN103403332A CN 103403332 A CN103403332 A CN 103403332A CN 2012800100297 A CN2012800100297 A CN 2012800100297A CN 201280010029 A CN201280010029 A CN 201280010029A CN 103403332 A CN103403332 A CN 103403332A
- Authority
- CN
- China
- Prior art keywords
- bearing portion
- camshaft
- combustion engine
- valve mechanism
- mechanism cover
- 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
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/006—Camshaft or pushrod housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L2001/0476—Camshaft bearings
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The goal of the present invention is to provide an internal combustion engine head-cover structure capable of suppressing an increase in the wall thickness and size of a head cover and enhancing the rigidity of the head cover. An internal combustion engine (E) head-cover structure is provided with the following: a covering part (11) which is disposed on a cylinder head (2) and which covers, from above, a valve gear (3) that includes cam shafts (31, 32); an outer peripheral edge part (12) which is provided along the outer peripheral edge of the covering part (11) and is fastened to the cylinder head (2); and a plurality of upper bearing parts (13) which are provided integrally with the covering part (11) and the outer peripheral edge part (12) and rotatably hold the cam shafts (31, 32) in cooperation with a plurality of lower bearing parts (23) provided on the cylinder head (2). The internal combustion engine (E) head-cover structure is characterized by the following: the upper bearing parts (13) are fastened and fixed to the lower bearing parts (23); and the covering part (11) has an expansion part (111) expanding in a substantially hemispherical shape between adjacent upper bearing parts (13).
Description
Technical field
The present invention relates to the valve mechanism cover structure of internal-combustion engine.
Background technique
In the past, on the top of the cylinder head of internal-combustion engine, be provided with the valve actuating gear that intake valve and exhaust valve are driven, described intake valve and exhaust valve are respectively used to open and close suction port and the relief opening that is communicated with firing chamber.And, the valve mechanism cover of coating gas door drive mechanism is installed on the top of cylinder head.
For example, in the valve mechanism cover structure that patent documentation 1 is put down in writing, the upper side member and the valve mechanism cover that clip up and down upside in a plurality of bearing part that this camshaft carried out to the axle supporting in camshaft ground, that be configured in camshaft form as one.Upper side member axially configures with equal intervals camshaft, and the covering section that covers between adjacent upper side member forms the tabular of general planar.
The prior art document
Patent documentation
Patent documentation 1: Chinese model utility bulletin CN201206478Y
Summary of the invention
The problem that invention will solve
; in recent years; consider the layout of internal-combustion engine, considered the cam-angle sensor (TCD sensor) that will detect the angle of swing of camshaft and be installed on valve mechanism cover to the additional devices such as common rail (common rail) that fuel injection system is supplied with fuel under high pressure.
Yet in existing valve mechanism cover structure, the testing precision of cam-angle sensor is likely because the vibration of valve mechanism cover reduces.And, in the situation that will be installed on the additional devices such as common rail of existing cylinder head, being installed to the valve mechanism cover lower with cylinder head phase specific rigidity, vibration and noise likely increase.Therefore, the rigidity of the further stiffened cylinder housing of expectation.
On the other hand, due to the requirement of the lightweight that also has internal-combustion engine, compactness, therefore, by the wall thickening of valve mechanism cover and the rigidity raising that realizes of maximizing, be limited.
The present invention completes in view of these problems just, and problem of the present invention is, a kind of valve mechanism cover structure of internal-combustion engine is provided, and it can suppress wall thickening and the maximization of valve mechanism cover and the rigidity of valve mechanism cover is improved.
For solving the means of problem
The valve mechanism cover structure of internal-combustion engine of the present invention possesses: covering section, and it is from upside coating gas door drive mechanism, and described valve actuating gear is included in the camshaft of cylinder head configuration; The periphery edge, it is along the outer periphery setting of described covering section, and is anchored on described cylinder head; And a plurality of upside bearing portions, one is arranged in they and described covering section and described periphery edge, described a plurality of upside bearing portion cooperates and described camshaft is held in and can freely rotates with a plurality of downside bearing portions in described cylinder head setting, the valve mechanism cover structure of described internal-combustion engine is characterised in that, described upside bearing portion is fastening is fixed in described downside bearing portion, and described covering section has and is the roughly ridge of hemispherical protuberance between adjacent described upside bearing portion.
According to described structure, between adjacent upside bearing portion, have and be the roughly ridge of hemispherical protuberance, therefore, utilize roughly hemispheric ridge to improve the rigidity of covering section.And, utilize this ridge to improve the rigidity of valve mechanism cover, can suppress vibration and noise.And, due to the shape of utilizing ridge, improved the rigidity of valve mechanism cover, therefore, can suppress wall thickening and the maximization of valve mechanism cover.
and, preferably constitute, described upside bearing portion has the fastening fixing part of bearing side, the fastening fixing part of this bearing side is fastened is fixed in described downside bearing portion, described periphery edge has the fastening fixing part of outer circumferential side at the position of the centre that becomes adjacent described upside bearing portion, the fastening fixing part of described outer circumferential side is fastened is fixed in described cylinder head, between the fastening fixing part of described bearing side and the fastening fixing part of described outer circumferential side, be provided with the 1st strengthening rib, the position that surrounds at the described upside bearing portion by adjacent and described the 1st strengthening rib is provided with described ridge.
According to described structure, between the fastening fixing part of bearing side and the fastening fixing part of outer circumferential side, be provided with the 1st strengthening rib, the position that surrounds at the upside bearing portion by adjacent and the 1st strengthening rib is provided with ridge, therefore, further improve the rigidity of valve mechanism cover, can further suppress vibration and noise.
And, preferably constitute, at the lower surface of described ridge, from the summit of described ridge, towards the fastening fixing part of described bearing side and the fastening fixing part extension of described outer circumferential side, be provided with the 2nd strengthening rib.
According to described structure, can further improve the rigidity of ridge, therefore, further improved the rigidity of valve mechanism cover, can further suppress vibration and noise.
And, preferably constitute, described camshaft consists of intake-side camshaft and exhaust side camshaft, along described intake-side camshaft and described exhaust side camshaft, dispose respectively a plurality of described upside bearing portions, between the described upside bearing portion of described intake-side camshaft and at least one party between the described upside bearing portion of described exhaust side camshaft be provided with described ridge.
According to described structure, at so-called DOHC(Double OverHead Camshaft) in the internal-combustion engine of formula, can improve the rigidity of valve mechanism cover, can suppress vibration and noise.
The invention effect
According to the present invention, can provide a kind of valve mechanism cover structure of internal-combustion engine of the rigidity that can improve valve mechanism cover.
The accompanying drawing explanation
Fig. 1 is the stereogram of valve mechanism cover structure of the internal-combustion engine of present embodiment.
Fig. 2 means the stereogram of the state of observing from bottom to top valve mechanism cover, wherein, (a) is overall diagram, is (b) enlarged view of the A part shown in (a).
Fig. 3 is the sectional view along I shown in Figure 1-I line.
Fig. 4 is the sectional view along II shown in Figure 1-II line.
Embodiment
Referring to figs. 1 through Fig. 4, embodiments of the present invention are elaborated.In the present embodiment, as an example of the situation of the valve mechanism cover of the motor that applies the present invention to automobile example, describe.In explanation, for the identical identical label of member mark, and the repetitive description thereof will be omitted.And, when direction is described, according to (B) after (F) before shown in Figure 1 left (L) right (R), describe.
As shown in Figure 1, internal-combustion engine E is the DOHC(Double OverHead Camshaft of in-line four cylinder: the double overhead camshaft) motor of formula, except valve mechanism cover 1 and cylinder head 2, omit diagram, but this internal-combustion engine E possesses cylinder block and the oily basic structures such as oil-collecting disk of storage of holding piston, connecting rod and bent axle etc.Internal-combustion engine E is horizontal as the mode of left and right directions with respect to vehicle take the inblock cylinder column direction, and constitutes from the rear air inlet, from the place ahead exhaust.
As shown in Figure 4, cylinder head 2 has periphery wall 21 and median wall 22, and this periphery wall 21 is the frame shape along the outer periphery of upper surface 2a and erects, and this median wall 22 erects from the central part of the fore-and-aft direction of upper surface 2a.And as shown in Figure 3, cylinder head 2 has a plurality of downside bearing portions 23 between periphery wall 21 and median wall 22, and this downside bearing portion 23 is for the camshaft 31,32 of axle supporting valve actuating gear 3.Downside bearing portion 23 is the position of the wall shape that extend to arrange along fore-and-aft direction, at the central part of the upper surface of downside bearing portion 23, has the recess 23a of semicircle shape.Downside bearing portion 23 is arranged at the position corresponding with the upside bearing portion 13 that arranges in valve mechanism cover 1 described later.
Valve actuating gear 3 has pair of cams axle 31,32 and a plurality of cam 33(Fig. 4 reference), this pair of cams axle 31,32 configures in parallel with each other along the inblock cylinder column direction, and these a plurality of cams 33 are individually fixed in this camshaft 31, camshaft 32.In addition, camshaft 31 is be used to opening and closing the intake-side camshaft of intake valve, and camshaft 32 is be used to opening and closing the exhaust side camshaft of exhaust valve.
As shown in Figures 1 to 4, valve mechanism cover 1 is arranged on the top of cylinder head 2, is the parts that the aluminum alloy of coating gas door drive mechanism 3 is made.
Upside bearing portion 13 is cooperate and the camshaft of valve actuating gear 3 31,32 is remained respectively to the position that can freely rotate with a plurality of downside bearing portions 23 that arrange in cylinder head 2.Upside bearing portion 13 is positions of the wall shape that extend to arrange along fore-and-aft direction, and it is separated from one another between peripheral portion 12 and groove part 14, to be arranged in left and right directions outside.Upside bearing portion 13 is configured in the left and right sides of each cylinder.In addition, in the present embodiment, at the upside bearing portion 13c of the left side of the cylinder of leftmost side configuration, be also used as (a) of 12De left part, periphery edge 12b(with reference to Fig. 2).
As shown in Figure 2 and Figure 3, at the central part of the fore-and-aft direction of the lower surface of upside bearing portion 13, be provided with the recess 13a of semicircle shape.The recess 13a that arranges at this upside bearing portion 13 and having formed camshaft 31,32 bearing portion of axle supporting for can freely rotating respectively at the recess 23a that downside bearing portion 23 arranges.In the both sides, front and back of recess 13a, be provided with bolt through hole 13b, this bolt through hole 13b is for running through the bolt B of inserting as secure component.This bolt through hole 13b is equivalent to " the fastening fixing part of bearing side " in claims.In addition, at the downside bearing portion 23 of cylinder head 2, in the position corresponding with bolt through hole 13b, be formed with the bolt fastening hole 23b for clamping bolt B.
In addition, for ridge 111, " roughly hemispherical " refer to except hemispherical, also comprises and can be considered as and the hemispherical shape that is equal to (so-called dome-shaped etc.).
As shown in Fig. 2 (b), at the lower surface of ridge 111, from the summit 111a of ridge 111, towards be arranged at bolt through hole 12a between adjacent upside bearing portion 13 and the groove part 14 of the bolt through hole 13b of upside bearing portion 13, periphery edge 12, be radiated entends and be provided with the 2nd strengthening rib 16.The 2nd strengthening rib 16 is configured to centered by the 111a of summit roughly symmetrical.Thus, ridge 111 is strengthened equably, therefore, can reduce vibration and noise.And for fear of the interference of the 2nd strengthening rib 16 with cam 33, the 2nd strengthening rib 16 is with the mode that the lower surface along ridge 111 upwards forms convex crooked (Fig. 4 reference).
In addition, as shown in Figure 1, the common rail 5 of supplying with fuel under high pressure for the fuel injection system to not shown is installed in the rearward end of valve mechanism cover 1.And, at the upper surface of valve mechanism cover 1, the cam-angle sensor 6 that the angle of swing to camshaft 32 detects is installed.And, in the end in the left side of valve mechanism cover 1, negative pressure pump 7 being installed, this negative pressure pump 7 is supplied with working hydraulic pressure to the air valve correct-timing variable mechanism (omitting diagram) of valve actuating gear 3.And, in the left side of the front end of valve mechanism cover 1, be equipped with for internal-combustion engine E being held in to the engine attachment device 8 of not shown vehicle body frame.And, at the upper surface of the right part of valve mechanism cover 1, being provided with opening portion 9, this opening portion 9 is for being discharged to blow-by gas the gas-liquid separation chamber's (omitting diagram) that arranges with valve mechanism cover 1 split.
Valve mechanism cover structure at the internal-combustion engine of present embodiment forms basically as described above, next, its action effect is described.
Valve mechanism cover structure according to the internal-combustion engine of present embodiment, camshaft 31,32 being carried out to the upside bearing portion 13 of axle supporting is arranged to and valve mechanism cover 1 one, between adjacent upside bearing portion 13, be formed with and be the roughly ridge 111 of hemispherical protuberance, therefore, utilize roughly hemispheric ridge 111 to improve the rigidity of covering section 11.Therefore, can suppress wall thickening and the maximization of valve mechanism cover 1, and improve on the whole the rigidity of valve mechanism cover 1, can suppress vibration and noise.
And, according to described structure, between the bolt through hole 13b that is arranged at bolt through hole 12a between adjacent upside bearing portion 13, periphery edge 12 and upside bearing portion 13, be provided with the 1st strengthening rib 15, the position that surrounds at the upside bearing portion 13 by adjacent and the 1st strengthening rib 15 is provided with ridge 111, therefore, further improve the rigidity of valve mechanism cover 1, can suppress vibration and noise.
And, lower surface at ridge 111, from the summit 111a of ridge 111 bolt through hole 12a and the groove part 14 between adjacent upside bearing portion 13 that be arranged at towards the bolt through hole 13b of upside bearing portion 13, periphery edge 12, be radiated entends and be provided with the 2nd strengthening rib 16, therefore, the rigidity of ridge 111 can be further improved, vibration and noise can be further suppressed.
And the 2nd strengthening rib 16 is configured to centered by the 111a of summit roughly symmetrical, therefore, can strengthen equably ridge 111, can reduce vibration and noise.
And valve mechanism cover 1 utilizes ridge 111 to improve on the whole rigidity, therefore, additional devices such as being total to rail 5, cam-angle sensor 6, negative pressure pump 7, engine attachment device 8 can be installed to valve mechanism cover 1.Therefore, can improve the degrees of freedom of the layout of internal-combustion engine E.
Hereinbefore, with reference to accompanying drawing, embodiments of the present invention are had been described in detail, but the invention is not restricted to this, in the scope of the purport that does not break away from invention, can suitably change.
For example, in the present embodiment, apply the present invention to the internal-combustion engine E of so-called DOHC formula, but be not limited to this, for example also can be applied to SOHC(Single OverHead Camshaft: the Single Over Head Camshaft) internal-combustion engine of formula.
And, in the present embodiment, constitute and gas-liquid separation chamber be arranged on to the outside of valve mechanism cover 1 in the mode of split, but also can constitute the inside that gas-liquid separation chamber is arranged on to valve mechanism cover 1.In addition, in the present embodiment, the gas-liquid separation chamber that for example resin that will be communicated with this opening portion 9 is made is arranged to and valve mechanism cover 1 split, thus, can realize lightweight and the compactness of valve mechanism cover 1.
And, in the present embodiment, between whole adjacent upside bearing portions 13, formed ridge 111, but the invention is not restricted to this, also can be between a plurality of adjacent upside bearing portions 13 in, need the position of strengthening to form ridge 111.
Label declaration
1 valve mechanism cover;
11 covering sections;
111 ridges;
12 periphery edges;
13 upside bearing portions;
13b bolt through hole;
15 the 1st strengthening rib;
16 the 2nd strengthening rib;
2 cylinder head;
23 downside bearing portions;
3 valve actuating gears.
Claims (4)
1. the valve mechanism cover structure of an internal-combustion engine, it possesses:
Covering section, it is from upside coating gas door drive mechanism, and described valve actuating gear is included in the camshaft of cylinder head configuration;
The periphery edge, it is along the outer periphery setting of described covering section, and is anchored on described cylinder head; And
A plurality of upside bearing portions, one is arranged in they and described covering section and described periphery edge, and described a plurality of upside bearing portions cooperate and described camshaft are held in and can freely rotate with a plurality of downside bearing portions in described cylinder head setting,
The valve mechanism cover structure of described internal-combustion engine is characterised in that,
Described upside bearing portion is fastening is fixed in described downside bearing portion,
Described covering section has and is the roughly ridge of hemispherical protuberance between adjacent described upside bearing portion.
2. the valve mechanism cover structure of internal-combustion engine according to claim 1, is characterized in that,
Described upside bearing portion has the fastening fixing part of bearing side, and the fastening fixing part of this bearing side is fastened is fixed in described downside bearing portion,
Described periphery edge has the fastening fixing part of outer circumferential side at the position of the centre that becomes adjacent described upside bearing portion, and the fastening fixing part of described outer circumferential side is fastened is fixed in described cylinder head,
Between the fastening fixing part of described bearing side and the fastening fixing part of described outer circumferential side, be provided with the 1st strengthening rib,
The position that surrounds at the described upside bearing portion by adjacent and described the 1st strengthening rib is provided with described ridge.
3. the valve mechanism cover structure of internal-combustion engine according to claim 2, is characterized in that,
At the lower surface of described ridge, from the summit of described ridge, towards the fastening fixing part of described bearing side and the fastening fixing part extension of described outer circumferential side, be provided with the 2nd strengthening rib.
4. the valve mechanism cover structure of the described internal-combustion engine of any one according to claim 1～3, is characterized in that,
Described camshaft consists of intake-side camshaft and exhaust side camshaft,
Along described intake-side camshaft and described exhaust side camshaft, dispose respectively a plurality of described upside bearing portions,
Between the described upside bearing portion of described intake-side camshaft and at least one party between the described upside bearing portion of described exhaust side camshaft be provided with described ridge.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011035549 | 2011-02-22 | ||
| JP2011-035549 | 2011-02-22 | ||
| PCT/JP2012/054185 WO2012115123A1 (en) | 2011-02-22 | 2012-02-22 | Internal combustion engine head-cover structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103403332A true CN103403332A (en) | 2013-11-20 |
| CN103403332B CN103403332B (en) | 2015-11-25 |
Family
ID=46720899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280010029.7A Active CN103403332B (en) | 2011-02-22 | 2012-02-22 | The head-cover structure of internal-combustion engine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2679792B1 (en) |
| JP (1) | JP5581438B2 (en) |
| CN (1) | CN103403332B (en) |
| WO (1) | WO2012115123A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108350763A (en) * | 2015-11-09 | 2018-07-31 | 五十铃自动车株式会社 | The cylinder head structure and internal combustion engine of internal combustion engine |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015124730A (en) * | 2013-12-27 | 2015-07-06 | 株式会社マーレ フィルターシステムズ | Cover member |
| FR3026789B1 (en) * | 2014-10-02 | 2016-11-04 | Renault Sa | INTERNAL COMBUSTION ENGINE HEAD COVER |
| DE102021201823A1 (en) * | 2021-02-26 | 2022-09-01 | Mahle International Gmbh | cylinder head cover |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0560014A (en) * | 1991-09-03 | 1993-03-09 | Yamaha Motor Co Ltd | Cylinder head cover structure of internal combustion engine |
| DE4323073A1 (en) * | 1993-07-10 | 1995-01-12 | Audi Ag | Reciprocating piston internal combustion engine |
| JP2008057406A (en) * | 2006-08-30 | 2008-03-13 | Toyota Motor Corp | Camshaft support structure for internal combustion engine |
| US20090013958A1 (en) * | 2006-01-19 | 2009-01-15 | Toyota Jidosha Kubushiki Kaisha | Camshaft Support Structure For an Internal Combustion Engine |
| CN201206478Y (en) * | 2008-04-22 | 2009-03-11 | 奇瑞汽车股份有限公司 | Cam spindle frame for engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20120912U1 (en) * | 2001-12-24 | 2002-06-06 | Volkswagen Ag, 38440 Wolfsburg | Cylinder head cover for an internal combustion engine |
| FR2867520B1 (en) * | 2004-03-09 | 2006-05-05 | Renault Sas | INTERNAL COMBUSTION ENGINE WITH AN ENCLOSURE FOR CONTAINING FUEL LEAKS |
| US7654237B2 (en) * | 2007-01-23 | 2010-02-02 | Lanxess Corporation | Cam cover |
| DE202008013310U1 (en) * | 2008-10-07 | 2009-02-12 | Reinz-Dichtungs-Gmbh | Cylinder head cover with metallic coating of seats for oil control valves |
| US8065993B2 (en) * | 2008-12-16 | 2011-11-29 | Ford Global Technologies, Llc | Structural oil baffle for engine covers |
-
2012
- 2012-02-22 WO PCT/JP2012/054185 patent/WO2012115123A1/en active Application Filing
- 2012-02-22 CN CN201280010029.7A patent/CN103403332B/en active Active
- 2012-02-22 JP JP2013501082A patent/JP5581438B2/en not_active Expired - Fee Related
- 2012-02-22 EP EP12749912.7A patent/EP2679792B1/en not_active Not-in-force
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0560014A (en) * | 1991-09-03 | 1993-03-09 | Yamaha Motor Co Ltd | Cylinder head cover structure of internal combustion engine |
| DE4323073A1 (en) * | 1993-07-10 | 1995-01-12 | Audi Ag | Reciprocating piston internal combustion engine |
| US20090013958A1 (en) * | 2006-01-19 | 2009-01-15 | Toyota Jidosha Kubushiki Kaisha | Camshaft Support Structure For an Internal Combustion Engine |
| JP2008057406A (en) * | 2006-08-30 | 2008-03-13 | Toyota Motor Corp | Camshaft support structure for internal combustion engine |
| CN201206478Y (en) * | 2008-04-22 | 2009-03-11 | 奇瑞汽车股份有限公司 | Cam spindle frame for engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108350763A (en) * | 2015-11-09 | 2018-07-31 | 五十铃自动车株式会社 | The cylinder head structure and internal combustion engine of internal combustion engine |
| US10690015B2 (en) | 2015-11-09 | 2020-06-23 | Isuzu Motors Limited | Cylinder head structure for internal combustion engine and internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2679792B1 (en) | 2016-01-20 |
| JP5581438B2 (en) | 2014-08-27 |
| EP2679792A1 (en) | 2014-01-01 |
| JPWO2012115123A1 (en) | 2014-07-07 |
| WO2012115123A1 (en) | 2012-08-30 |
| EP2679792A4 (en) | 2014-11-19 |
| CN103403332B (en) | 2015-11-25 |
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