CN102235263A - Air cylinder cover for four-valve diesel engine - Google Patents
Air cylinder cover for four-valve diesel engine Download PDFInfo
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- CN102235263A CN102235263A CN201010161420XA CN201010161420A CN102235263A CN 102235263 A CN102235263 A CN 102235263A CN 201010161420X A CN201010161420X A CN 201010161420XA CN 201010161420 A CN201010161420 A CN 201010161420A CN 102235263 A CN102235263 A CN 102235263A
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- cylinder
- air inlet
- intake duct
- cylinder head
- air
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Abstract
The invention discloses an air cylinder cover for a four-valve diesel engine, comprising an air cylinder cover body. An air inlet channel structure is arranged on the air cylinder cover body and comprises a total air inlet channel arranged at one side of the air cylinder cover body; the total air inlet channel is provided with a single air inlet channel and parallel cylinder-spanning dual air inlet channels, wherein the single air inlet channel is only communicated with the total air inlet channel and one air inlet seat ring hole; the parallel cylinder-spanning dual air inlet channels are simultaneously communicated with the total air inlet channel and the air inlet valve seat ring holes of two adjacent air cylinders; the parallel cylinder-spanning dual air inlet channels comprise a first branch channel, a second branch channel and a shared channel; the first branch channel and the second branch channel are respectively and directly connected with the air inlet valve seat ring holes of the two air cylinders and are respectively communicated with the shared channel; and the shared channel is connected with the total air inlet channel. Compared with the prior art, with the unique air inlet mechanism, the air cylinder cover disclosed by the invention can ensure that enough air enters the air cylinder; meanwhile, more space can be saved for setting a water jacket space; and the cooling requirement on the air cylinder cover is satisfied.
Description
Technical field
The present invention relates to a kind of Four-valve diesel engine cylinder head of, relate in particular to a kind of four valve multi-cylinder diesel engine cylinder head.
Background technique
Domestic cylinder cover for diesel engine generally adopts single intake duct at present.Adopt the air cylinder head structure of single intake duct simple, but air inflow is little, the power of diesel engine is low, and oil consumption is big, and diesel oil can't fully burn, and can't satisfy the diesel emission requirement of continuous upgrading.For solving the existing defective of aforementioned single intake duct cylinder head, the technician has developed two-in-series intake duct cylinder head, increases air inflow by increasing intake duct quantity.Though two-in-series intake duct cylinder head can solve the little problem of air inflow, the air flue that is increased has taken spaces a large amount of in the cylinder cap, makes the casting cylinder cover cooling jacket, and especially cylinder head bridge of the nose district water jacket size is narrow.This defective is more obvious in medium and small four-valve diesel engine, and the position, bridge of the nose district that needs most cooling in the cylinder head is difficult to casting and leads to, thereby makes bridge of the nose district can not get effective cooling, cylinder cap very easily takes place break, and then suppressed the further raising of engine power.
Summary of the invention
The present invention is in order to overcome above-mentioned defective of the prior art, a kind of novel cylinder cover for diesel engine to be provided.Be provided with parallel connection in this cylinder head and stride the cylinder twin-inlet, this intake duct air inflow is big, and it is little to take up room, thereby can provide enough air inflows to cylinder, can also stay enough spaces cooling jacket is set, improve the power and the emission standard of motor with integral body.
Four-valve diesel engine cylinder head of of the present invention, comprise the cylinder head body, described cylinder head body is provided with the intake duct structure, described intake duct structure comprises the total intake duct that is arranged at cylinder head body one side, described total intake duct is provided with the single intake duct that only is communicated with a total intake duct and an inlet valve seat ring hole, and the cylinder twin-inlet is striden in the parallel connection that is communicated with the inlet valve seat ring hole of total intake duct and adjacent two cylinders simultaneously, described parallel connection is striden the cylinder twin-inlet and is comprised first subchannel that is communicated with the inlet valve seat ring hole of adjacent two cylinders respectively directly and second subchannel and the direct and total common-use tunnel that is communicated with of intake duct, first subchannel and second subchannel all with shared channel connection.
Preferably, described single intake duct and parallel connection are striden the cylinder twin-inlet and are tangential air flue.
Preferably, on the described cylinder head be the four-cylinder diesel engine cylinder head.
Preferably, four valves on the described cylinder head are that rhombus is arranged.
Compared with prior art, cylinder head of the present invention can be saved down more space simultaneously and be used to be provided with the jacket space because its unique intake duct mechanism can be guaranteed that enough air enter into cylinder, has guaranteed the cooling needs of cylinder head.
Description of drawings
Accompanying drawing 1 is the partial sectional view of a kind of four valve four-cylinder diesel engine cylinder head of the present invention, shows the intake duct in this embodiment's cylinder head and the setting of valve.
Mark the following drawings mark in conjunction with the accompanying drawings thereon:
The single intake duct I of 1-, cylinder twin-inlet I is striden in the 2-parallel connection, and cylinder twin-inlet II is striden in the 3-parallel connection, the total intake duct of 4-, 5-parallel connection are striden cylinder twin-inlet III, the single intake duct II of 6-, the 7-oil sprayer, 8-four-cylinder, 9-the 3rd cylinder, 10-second cylinder, 11-first cylinder, 12-cylinder liner body, 13-first subchannel, 14-second subchannel, 15-common-use tunnel, 16-inlet valve seat ring hole, 17-exhaust valve seat insert hole.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subjected to the restriction of embodiment.
As shown in drawings, present embodiment is one or four valve four-cylinder diesel engine cylinder head.This cylinder head comprises cylinder head body 12, is provided with the intake duct structure to the cylinder air feed in the cylinder head body 12.Intake duct mechanism comprises a total intake duct 4, and this total intake duct 4 is located at a side of cylinder head body 12, is distributed unitedly to each cylinder by total intake duct 4 through the air of filtering.Total intake duct 4 is provided with and is used for cylinder twin-inlet (be parallel connection stride cylinder twin-inlet I 2, parallel connection stride cylinder twin-inlet II 3, cylinder twin-inlet III5 is striden in parallel connection) is striden in two single intake ducts (being single intake duct I 1 and single intake duct II 6) and three parallel connections to each cylinder of the air distribution of total intake duct 4.So-called single intake duct is for only being communicated with the single passage in an inlet valve seat ring hole of a total intake duct 4 and a cylinder.So-called parallel connection is striden the cylinder twin-inlet for being communicated with the passage of adjacent two cylinders and total intake duct 4 simultaneously.The structure that the cylinder twin-inlet is striden in three parallel connections is identical, is Y shape structure.Striding cylinder twin-inlet I 2 with parallel connection is example, first subchannel 13 that comprises the inlet valve seat ring hole connection of direct and first cylinder 11, directly and second subchannel 14 that is communicated with of the inlet valve seat ring hole of second cylinder 10 adjacent with first cylinder 11, and common-use tunnel 15, the first subchannels 13 and second subchannel 14 that directly link to each other with total intake duct 4 all are communicated with shared passage 15.Air in total intake duct 4 at first enters common-use tunnel 15, is entered in the cylinder by first subchannel 13 and second subchannel 14 with shared channel connection again.
In the present embodiment, two single intake ducts are arranged at the both sides, front and back (left and right sides among Fig. 1) of cylinder head body 12 respectively, 1 pair first cylinder 11 air feed of single intake duct I, 6 pairs of four-cylinder 8 air feed of single intake duct II.Three parallel connections are striden the cylinder twin-inlet and are located in the middle of two single intake ducts, cylinder twin-inlet I 2 is striden in parallel connection can be to first cylinder 11 and second cylinder, 10 air feed, cylinder twin-inlet II 3 is striden in parallel connection can be to second cylinder 10 and the 3rd cylinder 9 air feed, and cylinder twin-inlet III5 is striden in parallel connection can be to the 3rd cylinder 9 and four-cylinder 8 air feed.
After adopting above-mentioned parallel connection to stride the cylinder twin-inlet, because the working procedure of adjacent two cylinders is opposite, another cylinder exhaust during a cylinder intake, the common-use tunnel of cylinder twin-inlet is each only to pass through a subchannel to a cylinder air feed so each parallel connection is striden.Because common-use tunnel relative aperture subchannel is big, thereby can guarantee that enough air enter into cylinder from total intake duct 4.Simultaneously, because the setting of common-use tunnel can be saved down more space and is used to be provided with the jacket space, it is satisfied to have guaranteed that the cylinder head cooling needs.
At present embodiment, all single intake duct and gas-distributing channels are tangential air flue.Tangential air flue makes the air-flow that enters into cylinder from the intake duct structure have certain strength of vortex, can quicken oil gas and mix, to satisfy the needs that cylinder combustion is burnt.
In the present embodiment, the head valve position is that rhombus is arranged (relevant position in inlet valve seat ring hole 16 and exhaust valve seat insert hole 17 as shown in Figure 1), even between two intake ducts of medium and small like this engine cylinder cap, between two air outlet flues, between intake and exhaust port and oil sprayer 7 peripheries all have enough spaces to cast bridge of the nose district water jacket.
More than disclosed only be a specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (6)
1. Four-valve diesel engine cylinder head of, comprise the cylinder head body, described cylinder head body is provided with the intake duct structure, it is characterized in that: described intake duct structure comprises the total intake duct that is arranged at cylinder head body one side, described total intake duct is provided with the single intake duct that only is communicated with a total intake duct and an inlet valve seat ring hole, and the cylinder twin-inlet is striden in the parallel connection that is communicated with the inlet valve seat ring hole of total intake duct and adjacent two cylinders simultaneously, described parallel connection is striden the cylinder twin-inlet and is comprised first subchannel that is communicated with the inlet valve seat ring hole of adjacent two cylinders respectively directly and second subchannel and the direct and total common-use tunnel that is communicated with of intake duct, first subchannel and second subchannel all with shared channel connection.
2. Four-valve diesel engine cylinder head of according to claim 1 is characterized in that: it is Y shape structure that the cylinder twin-inlet is striden in described parallel connection.
3. Four-valve diesel engine cylinder head of according to claim 1 and 2 is characterized in that: described single intake duct is two, is divided into the both sides of cylinder head, and it is three that the cylinder twin-inlet is striden in parallel connection, is located between described two single intake ducts.
4. Four-valve diesel engine cylinder head of according to claim 1 is characterized in that: described single intake duct and parallel connection are striden the cylinder twin-inlet and are tangential air flue.
5. Four-valve diesel engine cylinder head of according to claim 1 and 2 is characterized in that: described cylinder head is the four-cylinder diesel engine cylinder head.
6. Four-valve diesel engine cylinder head of according to claim 1 and 2 is characterized in that: four air valve seat ring holes on the described cylinder head are that rhombus is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010161420XA CN102235263A (en) | 2010-04-29 | 2010-04-29 | Air cylinder cover for four-valve diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010161420XA CN102235263A (en) | 2010-04-29 | 2010-04-29 | Air cylinder cover for four-valve diesel engine |
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| Publication Number | Publication Date |
|---|---|
| CN102235263A true CN102235263A (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010161420XA Pending CN102235263A (en) | 2010-04-29 | 2010-04-29 | Air cylinder cover for four-valve diesel engine |
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| CN (1) | CN102235263A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569869A (en) * | 2015-12-25 | 2016-05-11 | 潍柴动力扬州柴油机有限责任公司 | Four-valve cylinder cover for lightweight engine |
| CN107269416A (en) * | 2017-07-10 | 2017-10-20 | 河南柴油机重工有限责任公司 | A kind of Design of High Pressure Common Rail Diesel Engine cylinder head |
| CN107605630A (en) * | 2017-10-31 | 2018-01-19 | 广西玉柴机器股份有限公司 | A kind of multi-cylinder diesel engine air intake duct |
| CN111692008A (en) * | 2020-06-24 | 2020-09-22 | 东风商用车有限公司 | Cylinder cover |
| CN111706441A (en) * | 2020-06-18 | 2020-09-25 | 东风商用车有限公司 | Cylinder head and engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03267551A (en) * | 1990-03-15 | 1991-11-28 | Mazda Motor Corp | Cylinder head of diesel engine equipped with subchamber |
| EP0580039A1 (en) * | 1992-07-24 | 1994-01-26 | Adam Opel Ag | Piston internal combustion engine, in particular diesel engine |
| JPH08218938A (en) * | 1995-02-15 | 1996-08-27 | Nissan Motor Co Ltd | Intake/exhaust port for internal combustion engine |
| DE19746222A1 (en) * | 1996-11-24 | 1998-05-28 | Alireza Ziabazmi | Cylinder head for four=stroke engine |
| CN2934607Y (en) * | 2006-07-06 | 2007-08-15 | 广西玉柴机器股份有限公司 | Four-air valve four-cylinder diesel engine air passage |
| CN201218143Y (en) * | 2008-07-17 | 2009-04-08 | 安徽江淮汽车股份有限公司 | Cylinder cap of 1.8-2.4L diesel engine |
| CN201661374U (en) * | 2010-04-29 | 2010-12-01 | 广西玉柴机器股份有限公司 | Four-air-valve diesel engine air cylinder cover |
-
2010
- 2010-04-29 CN CN201010161420XA patent/CN102235263A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03267551A (en) * | 1990-03-15 | 1991-11-28 | Mazda Motor Corp | Cylinder head of diesel engine equipped with subchamber |
| EP0580039A1 (en) * | 1992-07-24 | 1994-01-26 | Adam Opel Ag | Piston internal combustion engine, in particular diesel engine |
| JPH08218938A (en) * | 1995-02-15 | 1996-08-27 | Nissan Motor Co Ltd | Intake/exhaust port for internal combustion engine |
| DE19746222A1 (en) * | 1996-11-24 | 1998-05-28 | Alireza Ziabazmi | Cylinder head for four=stroke engine |
| CN2934607Y (en) * | 2006-07-06 | 2007-08-15 | 广西玉柴机器股份有限公司 | Four-air valve four-cylinder diesel engine air passage |
| CN201218143Y (en) * | 2008-07-17 | 2009-04-08 | 安徽江淮汽车股份有限公司 | Cylinder cap of 1.8-2.4L diesel engine |
| CN201661374U (en) * | 2010-04-29 | 2010-12-01 | 广西玉柴机器股份有限公司 | Four-air-valve diesel engine air cylinder cover |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569869A (en) * | 2015-12-25 | 2016-05-11 | 潍柴动力扬州柴油机有限责任公司 | Four-valve cylinder cover for lightweight engine |
| CN107269416A (en) * | 2017-07-10 | 2017-10-20 | 河南柴油机重工有限责任公司 | A kind of Design of High Pressure Common Rail Diesel Engine cylinder head |
| CN107605630A (en) * | 2017-10-31 | 2018-01-19 | 广西玉柴机器股份有限公司 | A kind of multi-cylinder diesel engine air intake duct |
| CN111706441A (en) * | 2020-06-18 | 2020-09-25 | 东风商用车有限公司 | Cylinder head and engine |
| CN111692008A (en) * | 2020-06-24 | 2020-09-22 | 东风商用车有限公司 | Cylinder cover |
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Application publication date: 20111109 |