CN2605392Y - Cylinder head casing for multi cylinder internal combustion engine - Google Patents
Cylinder head casing for multi cylinder internal combustion engine Download PDFInfo
- Publication number
- CN2605392Y CN2605392Y CNU032335865U CN03233586U CN2605392Y CN 2605392 Y CN2605392 Y CN 2605392Y CN U032335865 U CNU032335865 U CN U032335865U CN 03233586 U CN03233586 U CN 03233586U CN 2605392 Y CN2605392 Y CN 2605392Y
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- CN
- China
- Prior art keywords
- chamber
- waste gas
- cavity
- fresh air
- cylinder head
- Prior art date
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- Expired - Fee Related
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
A cylinder cap of a cylinder internal-combustion engine is provided with an installation cavity of a valve mechanism in the front end. The cavity is divided into a fresh air introduced cavity and a waste gas extracted cavity by a partition plate, and the fresh air introduced cavity is connected with a rubber pipe which is arranged between an air filter and a throttle body while the waste gas extracted cavity is connected with an intake manifold resonator. At least a partition which is arranged in two cavities respectively is provided with a plurality of ventilating ports; wherein, three ventilating ports are arranged in the partition of the fresh air introduced cavity and the position of the ports are arranged staggeredly, and the position of the ventilating ports of the partition in the waste gas extracted cavity is staggered with the position of the original air outlet. The structure of the cylinder cap can increase the flow of fresh air in the cylinder cap; and change the pressure difference between the air inlet and the air outlet, of which is beneficial to the oil-gas separation of the waste gas in a crankcase, and the utility model can satisfy the smoothly completion of the scavenging work in the crankcase when the engine is under all kinds of working conditions.
Description
Technical field
The utility model belongs to technical field of internal combustion engines, is specifically related to a kind of cylinder head cover of internal-combustion engine with multi-cylinders.
Technical background
Existing cylinder head cover has distribution device installation chamber at the cylinder head cover front end, with a partition cylinder head cover is divided into two chambers at length direction, one of them connects the rubber pipe between sky filter and the throttle body, function is to introduce fresh air engine interior to be carried out scavenging and the oil gas of engine interior is drawn, and reenters the cylinder head burning.Another chamber is to tap into gas manifold resonant cavity (or claiming pressure stabilizer), and its function is that oil gas is imported resonant cavity (or claiming pressure stabilizer) burning.Because the degree of vacuum absolute value of motor intake manifold resonant cavity (or claiming pressure stabilizer) when idling and low speed is low, the pressure difference of live gas leading-in end and oil gas Outlet is little, engine interior scavenging process this moment (PCV) is difficult to realize that engine interior is positive pressure sometimes; When high speed, because degree of vacuum absolute value height, oil gas flows fast, if Oil-gas Separation is incomplete, with directly connecing engine motor oil is sucked rubber pipe between intake manifold resonant cavity or empty filter and the throttle body.Therefore, there is certain problem in existing cylinder head cover design.
Summary of the invention
The utility model provides a kind of waste gas that helps in the crankcase to carry out Oil-gas Separation at the problem that prior art exists, and satisfies the cylinder head cover of the internal-combustion engine with multi-cylinders of the inner scavenging needs of each operating mode lower crankcase of motor.
The technical solution of the utility model is as follows:
The cylinder head cover of internal-combustion engine with multi-cylinders, the front end of cylinder head cover has distribution device installation chamber, this chamber has been divided into fresh air introducing chamber by a partition and waste gas is drawn chamber, fresh air introducing chamber connects the rubber pipe between sky filter and the throttle body, waste gas is drawn chamber and is tapped into gas manifold resonant cavity, it is characterized in that a next door is set respectively in two chambers at least, leave ventilating hole on the next door.
The utility model adopts above-mentioned design to be based on following consideration: because the waste gas of crankcase inside is rich in machine oil steam, need to introduce the waste gas of fresh air cooling crankcase inside, to reach Oil-gas Separation, structurally allow fresh air certain technology difficulty be arranged and need certain space around the crankcase waste gas storehouse on the cylinder head cover, so, the design is separated into a plurality of capacitors that are interconnected by the fresh air of cylinder head cover inside is introduced chamber with the next door, increase flow process and the waiting time of live gas in cylinder head cover inside, more effectively to cool off the waste gas in the crankcase, reach Oil-gas Separation.In addition, because the waste gas of crankcase inside is rich in machine oil steam, the design draws waste gas the next door also is set in the chamber, makes waste gas drawing the anxious area of passage variation that swashs of position generation, changes the pressure reduction between the air inlet/outlet, to reach the purpose of Oil-gas Separation.
Therefore the cylinder head cover structure of the utility model design more helps the Oil-gas Separation of waste gas in the crankcase, and everything goes well with your work finishes in the scavenging of various operating mode crankcase of following time inside to satisfy motor.
Description of drawings
Fig. 1 is the structural representation of the cylinder head cover of internal-combustion engine with multi-cylinders.
Embodiment
Referring to Fig. 1, the front end of the cylinder head cover of internal-combustion engine with multi-cylinders has distribution device installation chamber, and this chamber has been divided into fresh air introducing chamber 2 by a partition 3 and waste gas is drawn chamber 4.Fresh air introducing chamber 2 connects the rubber pipe between sky filter and the throttle body, and waste gas is drawn chamber 4 and tapped into gas manifold resonant cavity, and these places have kept the structural type of former housing.Improvements of the present utility model are in fresh air is introduced chamber 2 three next doors 1 to be set, all reserved the ventilating hole 5 that is interconnected on each next door 1, and all open mutually ventilating hole 5 positions, simultaneously, in drawing chamber 4, waste gas also is provided with a next door 1, ventilating hole 5 on the next door also staggers mutually with the position of the original air outlet 6 of chamber, to increase the gas flow process.A is the introducing circuit of fresh air among the figure, and B is the lead line of crankcase waste gas.
Claims (3)
1, the cylinder head cover of internal-combustion engine with multi-cylinders, the front end of cylinder head cover has distribution device installation chamber, this chamber has been divided into fresh air introducing chamber by a partition and waste gas is drawn chamber, fresh air introducing chamber connects the rubber pipe between sky filter and the throttle body, waste gas is drawn chamber and is tapped into gas manifold resonant cavity, it is characterized in that a next door is set respectively in two chambers at least, leave ventilating hole on the next door.
2, the cylinder head cover of internal-combustion engine with multi-cylinders according to claim 1 is characterized in that the next door that fresh air is introduced in the chamber is provided with three, the setting that interlaces of their vent locations.
3, the cylinder head cover of internal-combustion engine with multi-cylinders according to claim 1 is characterized in that waste gas draws the vent locations and the original air outlet of chamber in the next door that is provided with in the chamber and be staggeredly located.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032335865U CN2605392Y (en) | 2003-03-17 | 2003-03-17 | Cylinder head casing for multi cylinder internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032335865U CN2605392Y (en) | 2003-03-17 | 2003-03-17 | Cylinder head casing for multi cylinder internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2605392Y true CN2605392Y (en) | 2004-03-03 |
Family
ID=34165886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032335865U Expired - Fee Related CN2605392Y (en) | 2003-03-17 | 2003-03-17 | Cylinder head casing for multi cylinder internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2605392Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102658449A (en) * | 2012-05-09 | 2012-09-12 | 重庆大江美利信压铸有限责任公司 | Ventilation cover plate connecting method for automobile engine cylinder cover |
| CN102869872A (en) * | 2010-04-30 | 2013-01-09 | 洋马株式会社 | Engine |
| CN103410630A (en) * | 2013-07-05 | 2013-11-27 | 广西玉柴机器股份有限公司 | Diesel engine cylinder head cover |
-
2003
- 2003-03-17 CN CNU032335865U patent/CN2605392Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869872A (en) * | 2010-04-30 | 2013-01-09 | 洋马株式会社 | Engine |
| CN102869872B (en) * | 2010-04-30 | 2015-06-17 | 洋马株式会社 | Engine |
| CN102658449A (en) * | 2012-05-09 | 2012-09-12 | 重庆大江美利信压铸有限责任公司 | Ventilation cover plate connecting method for automobile engine cylinder cover |
| CN102658449B (en) * | 2012-05-09 | 2014-03-12 | 重庆大江美利信压铸有限责任公司 | Ventilation cover plate connecting method for automobile engine cylinder cover |
| CN103410630A (en) * | 2013-07-05 | 2013-11-27 | 广西玉柴机器股份有限公司 | Diesel engine cylinder head cover |
| CN103410630B (en) * | 2013-07-05 | 2015-10-28 | 广西玉柴机器股份有限公司 | Diesel engine cylinder head cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |