CN206830262U - Gs-oil separator, engine and its cylinder head assembly - Google Patents

Abstract

Present disclose provides a kind of gs-oil separator, engine and its cylinder head assembly.Gs-oil separator, wherein, the gs-oil separator includes body, the body is provided with the fixed part for installation, one-level gas oil separation structure and two level gas oil separation structure, the body defines oil-gas separation chamber and is provided with the blowby gas inlet connected with the oil-gas separation chamber, gas blowby outlet, the one-level gas oil separation structure is arranged in the oil-gas separation chamber, and close to the blowby gas inlet, the two level gas oil separation structure is arranged on the body exterior and is located at the gas blowby exit.Gs-oil separator described in the disclosure provides good oil gas separation and simple in construction is easily installed.

Description

Gs-oil separator, engine and its cylinder head assembly

Technical field

This disclosure relates to engine oil gas separation technology field, more particularly to a kind of gs-oil separator, engine and its gas Cylinder cap assembly.

Background technology

The explosive motor course of work is usually：Suction gaseous mixture (including air and fuel such as gasoline, diesel oil etc.) is pressed afterwards Contracting, is then lighted or compression ignition gaseous mixture, so as to drive piston acting to produce power.It can all be produced from being compressed in burning for gaseous mixture It is raw that very high pressure, the gaseous mixture compressed can be from gaps of the gap of piston and cylinder body, gap-clearance of piston rings, piston ring and cylinder body etc. Place, which is scurried out, enters crankcase, so as to form crankcase gas blowby (hereinafter referred to as gas blowby).It is harmful due to containing in gas blowby Composition, therefore, it is necessary to discharged after gas blowby is burnt again from gas handling system suction combustion chamber from blast pipe.It is big due to having in crankcase High temperature oil and machine oil steam are measured, therefore, gas blowby understands portable machine oil vapour (also it is possible thereby to which gas blowby is claimed in process crankcase Be " oil gas "), this part machine oil if over gas blowby be directly entered combustion system can cause burning and deterioration of emission.Therefore, In order to improve economy, improve discharge, it is necessary to separated the machine oil oil droplet in oil gas.

The crankcase ventilation system of present engine generally sets gs-oil separator to carry out the gas blowby flowed into crankcase Oil-gas Separation, to meet the laws and regulations requirements such as increasingly strict environmental protection, discharge, safety.The gs-oil separator of conventional engines is main There are the gs-oil separators such as labyrinth baffle-type, cyclone type, filer element type.Wherein, because cyclone type oil-gas separator has preferably oil Gas separating effect, therefore generally more used.However, the gs-oil separator for external hanging type (i.e. outside cylinder head) For, because engine component is numerous, it thus be accordingly used in and gs-oil separator is connected to pipeline in crankcase ventilation system not Easily arrangement, and gs-oil separator and corresponding pipeline easily freeze in cold environment, influence the efficiency of Oil-gas Separation even Function.And the gs-oil separator of built-in (being arranged on inside cylinder head) usually requires more complicated manufacturing process, cost is high.

Utility model content

In view of this, the disclosure is directed to a kind of gs-oil separator, to provide good oil gas separation, and structure Simply it is easily installed.

To reach above-mentioned purpose, what the technical scheme of the disclosure was realized in：

A kind of gs-oil separator, wherein, the gs-oil separator includes body, and the body is provided with consolidating for installation Determine portion, one-level gas oil separation structure and two level gas oil separation structure, the body define oil-gas separation chamber and be provided with The blowby gas inlet of the oil-gas separation chamber connection, gas blowby outlet, the one-level gas oil separation structure are arranged on the Oil-gas Separation In chamber, and close to the blowby gas inlet, the two level gas oil separation structure is arranged on the body exterior and altered positioned at described Gas outlet.

Further, multiple perforates are provided with the body, multiple perforates are used as the blowby gas inlet.

Further, each perforate is corresponded on the body and is provided with accelerated passage, the accelerated passage enters Mouthful it is the blowby gas inlet, the outlet of the accelerated passage is towards the one-level gas oil separation structure.

Further, the direction cross sectional dimensions that the accelerated passage is configured to from the entrance to the outlet gradually subtracts Small cone structure.

Further, the one-level gas oil separation structure is configured with the platy structure of multiple ribs, adjacent two Drainback passage is formed between rib.

Further, multiple bar shapeds being set parallel to each other that the gas blowby outlet is configured to open up on the body are opened Mouthful, the two level gas oil separation structure is configured to the curtain sheet structure outwards to be extended back from each strip gab, to change From the flow direction of the gas blowby of strip gab outflow.

Further, the body includes antetheca, rear wall, upper wall and two side walls, and the oil-gas separation chamber is by before described Wall, rear wall, upper wall and two side walls surround, and the fixed part is configured to the ear extended outward from the circumferential edge of the antetheca Portion, the blowby gas inlet are arranged at the antetheca, the one-level gas oil separation structure be configured to from the inner surface of the upper wall to Lower extension, and the lower edge of the one-level gas oil separation structure is higher than the lower edge of the rear wall, the gas blowby outlet The upper wall is arranged at, the two level gas oil separation structure is arranged at the outer surface of the upper wall in the gas blowby exit.

Relative to prior art, the gs-oil separator described in the disclosure has the advantage that：

Gs-oil separator described in the disclosure is led by one-level gas oil separation structure in oil-gas separation chamber to gas blowby The Oil-gas Separation wanted, the gas blowby flowed out from oil-gas separation chamber is carried out again in gas blowby exit by two level gas oil separation structure Secondary Oil-gas Separation, to reduce the oil level carried in oil gas as far as possible, there is preferable oil gas separation, it is simple in construction easily raw Production, while convenient installation can be realized by fixed part.

The another object of the disclosure is to propose a kind of cylinder cap assembly, to provide good Oil-gas Separation effect While fruit, simplify manufacturing process, reduce production cost.

To reach above-mentioned purpose, what the technical scheme of the disclosure was realized in：

A kind of cylinder cap assembly, including housing, wherein, the cylinder cap assembly also includes inner bottom plating, The inner bottom plating and the housing surround the chamber of sealing, and the inner bottom plating is provided with oil return opening and altered with the chamber Gas air hatch, the housing are provided with the crankcase ventilation mouth with the chamber, the gas blowby air hatch and the bent axle Case ventilating opening limits blowby gas flows direction, and oil gas rough segmentation structure and oil gas sub-structure, the oil gas are provided with the chamber Rough segmentation structure is set close to the blowby gas inlet, and the oil gas essence separation structure is arranged on the oil gas along the blowby gas flows direction The downstream of rough segmentation structure, wherein, the oil gas essence separation structure is above-mentioned gs-oil separator, and the gs-oil separator passes through described solid Determine portion and be connected to the housing and/or the inner bottom plating.

Further, the oil gas rough segmentation structure is the baffle plate of multiple cross arrangements.

Relative to prior art, the cylinder cap assembly described in the disclosure has the advantage that：

In the cylinder cap assembly described in the disclosure, gas blowby is in the chamber respectively in oil gas rough segmentation structure and oil Carried out three times at one-level gas oil separation structure and two level gas oil separation structure in gas sub-structure (namely gs-oil separator) Machine oil separates, and effectively can separate the machine oil in gas blowby, have good Oil-gas Separation rate.Simultaneously as oil gas Separator is fixed in the chamber by its fixed part, that is to say, that gs-oil separator is not to be integrated with housing or inner bottom plating Together, therefore, the suitable gs-oil separator of size and shape can be selected according to the construction of engine, this is largely The difficulty of manufacturing process is reduced, its cost is relatively low.

The disclosure also provides a kind of engine, including crankcase and gas handling system, wherein, the engine includes above-mentioned hair Motivation cylinder head assembly, the cylinder cap assembly are connected by the air hatch with the crankcase, pass through the song Crankcase ventilation mouth connects with the gas handling system.

The engine is same relative to Dominant Facies possessed by prior art with above-mentioned cylinder cap assembly, herein not Repeat again.

Brief description of the drawings

The accompanying drawing for forming a part of this disclosure is used for providing further understanding of the disclosure, the schematic reality of the disclosure Apply example and its illustrate to be used to explain the disclosure, do not form the improper restriction to the disclosure.In the accompanying drawings：

Fig. 1 is the schematic cross-sectional view of the cylinder cap assembly described in the embodiment of the present disclosure；

Fig. 2 is the stereogram of the gs-oil separator described in the embodiment of the present disclosure；

Fig. 3 is the schematic cross-sectional view of the gs-oil separator described in the embodiment of the present disclosure.

Description of reference numerals：

1- housings, 102- chambers, 11- crankcase ventilation mouths, the inserting slot constructions of 12- first, 2- inner bottom platings, 21- air hatch, 22- oil return openings, the inserting slot constructions of 23- second, 3- oil gas rough segmentation structures, 4- gs-oil separators, 40- bodies；401- antethecas, after 402- Wall, 403- upper walls, 404- the first side walls, 405- second sidewalls, 41- fixed parts, 42- one-level gas oil separation structures, 421- ribs, 422- drainback passages, 43- two level gas oil separation structures, 44- oil-gas separation chambers, 45- blowby gas inlets, the outlet of 46- gas blowbies, 47- add Fast passage.

Embodiment

It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the disclosure can phase Mutually combination.

In addition, the noun of locality being previously mentioned in embodiment of the disclosure such as " upper and lower ", refers to when engine is in assembling " upper and lower " of in the vertical direction when (such as being assembled to when in vehicle) state or use state, " forward and backward " are to be altered in chamber What the flow direction of gas limited, gas blowby flows from the front to the back, " inside and outside " refer to relative to corresponding component profile itself " it is interior, Outside ".The above-mentioned noun of locality is only used for the explanation and illustration disclosure, is not limited to the scope of the present disclosure.

Describe the disclosure in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Fig. 1 shows a kind of embodiment for the cylinder cap assembly that the disclosure provides, and it is also shown for this simultaneously A kind of embodiment of the open gs-oil separator provided.Fig. 2 is the stereogram of the gs-oil separator shown in Fig. 1, and Fig. 3 is to put Big figure.With reference to shown in figure 1, cylinder cap assembly, including housing 1, wherein, the cylinder cap assembly also includes Inner bottom plating 2, the inner bottom plating 2 and the housing 1 surround the chamber 102 of sealing, the inner bottom plating 2 be provided with oil return opening 22 and with The gas blowby air hatch 21 that the chamber 102 connects, the housing 1 are provided with the crankcase ventilation mouth connected with the chamber 102 11, the gas blowby air hatch 21 and the crankcase ventilation mouth 11 limit blowby gas flows direction (with reference to shown in arrow in figure 1), institute State and oil gas rough segmentation structure 3 and oil gas sub-structure are provided with chamber 102, the oil gas rough segmentation structure 3 enters close to the gas blowby Mouth 45 is set, and the oil gas essence separation structure is arranged on the downstream of the oil gas rough segmentation structure 3 along the blowby gas flows direction, its In, the oil gas essence separation structure is gs-oil separator 4, and the gs-oil separator 4 includes body 40, and the body 40 is provided with use In the fixed part 41, one-level gas oil separation structure 42 and two level gas oil separation structure 43 of installation, the body 40 defines oil gas Disengagement chamber 44 and be provided with the blowby gas inlet 45 connected with the oil-gas separation chamber 44, gas blowby outlet 46, the one-level oil gas Isolating construction 42 is arranged in the oil-gas separation chamber 44, and close to the blowby gas inlet 45, the two level Oil-gas Separation knot Structure 43 is arranged on the outside of body 40 and at gas blowby outlet 46.The gs-oil separator 4 passes through the fixed part 41 are connected to the housing 1 and inner bottom plating 2.

The direction of arrow along Fig. 1, crankcase gas blowby first pass around oil gas rough segmentation after air hatch 21 enters chamber 102 Structure 3, big particle diameter oil droplet is separated, then reaches oil gas sub-structure, i.e., gs-oil separator 4 is entered by blowby gas inlet 45, The direction of arrow along Fig. 3, gas blowby enters the oil-gas separation chamber 44 of gs-oil separator 4 from blowby gas inlet 45, in oil-gas separation chamber 44 In realized by one-level gas oil separation structure 43 oil droplet most in gas blowby separated；Then, gas blowby goes out from gas blowby Mouth 46 flows out, and in this place, two level gas oil separation structure 43 further separates to the oil droplet in gas blowby so that from gs-oil separator 4 The gas blowby of middle outflow more cleans.Gas blowby flows after the outflow of gas blowby outlet 46 of gs-oil separator 4 from crankcase ventilation mouth 11 Go out, into engine aspirating system, to be rekindled into combustion chamber.

Analyzed more than, in the cylinder cap assembly that the disclosure provides, gas blowby is distinguished in chamber 102 One-level gas oil separation structure 42 and two in oil gas rough segmentation structure 3 and oil gas sub-structure (namely gs-oil separator 4) Machine oil three times is carried out at level gas oil separation structure 43 to separate, and effectively the machine oil in gas blowby can be separated, had good Oil-gas Separation rate.Simultaneously as gs-oil separator 4 is fixed in chamber 102 by its fixed part 41, that is to say, that oil Gas separating device 4 is not to be integrated with housing 1 or inner bottom plating 2, therefore, can according to the construction of engine select size and The suitable gs-oil separator of shape, this largely reduces the difficulty of manufacturing process, and its cost is relatively low.

In the embodiment that the disclosure provides, the one-level oil gas in the one-level gs-oil separator 4 of oil gas rough segmentation structure 3 Isolating construction 42 and two level gas oil separation structure 43 can have a variety of makes, alternatively, it is so structured that inertial collision Formula gas oil separation structure, for example, oil gas rough segmentation structure 3 is it is so structured that the baffle plate of multiple cross arrangements, one-level Oil-gas Separation knot Structure 42 and two level gas oil separation structure 43 can be constructed in the following manner.

A kind of embodiment for the gs-oil separator 4 that the disclosure provides is described in detail below with reference to Fig. 2 and Fig. 3.

In the embodiment shown in Fig. 1 to Fig. 3, the body 40 includes antetheca 401, rear wall 402, upper wall 403 With two side walls, i.e. the first side wall 404 and second sidewall 405, the oil-gas separation chamber 44 by the antetheca 401, rear wall 402, Upper wall 403 and two side walls surround, and the fixed part 41 is configured to the ear extended outward from the circumferential edge of the antetheca 401 Portion, the blowby gas inlet 45 are arranged at the antetheca 401, and the one-level gas oil separation structure 42 is configured to from the upper wall 403 Inner surface extend downwardly, and the lower end of the one-level gas oil separation structure 42 be higher than the rear wall 402 lower end, it is described to alter Gas outlet 46 is arranged at the upper wall 403, and the two level gas oil separation structure 43 is arranged at described at gas blowby outlet 46 The outer surface of upper wall 403.Herein it should be noted that the disclosure provide gs-oil separator 4 body 40 planform simultaneously The embodiment shown in Fig. 1 to Fig. 3 is not limited to, other suitable planforms, example can also be configured to as needed Such as, two side walls can be removed, is partly enclosed accordingly by antetheca 401, rear wall 402, upper wall 403, housing 1 and inner bottom plating 2 Into the oil-gas separation chamber 44.On the other hand, the disclosure is not particularly limited.

In the embodiment shown in Fig. 2 and Fig. 3, fixed part 41 is arranged on the upper and lower edge of antetheca 401, accordingly Ground, the inner surface setting of housing 1 have the first inserting slot construction 12 coordinated with the fixed part of top edge 41, the inner surface of inner bottom plating 2 The second inserting slot construction 23 coordinated with the fixed part of lower edge 41 is provided with, gs-oil separator 4 is securely fixed in chamber In 102.Of course, it is possible to only set fixed part 41 in the top edge or lower edge of tong arm 401, correspondingly, gs-oil separator 4 then leads to Cross the cooperation of the inserting slot construction 12 of fixed part 41 and first or the second inserting slot construction 23 and fix in chamber 102.In addition, fixed part Can be interference fit between 41 and inserting slot construction, to avoid gs-oil separator 4 is relative to rock.In addition, fixed part 41 is also Housing 1 and/or inner bottom plating 2 can be welded in, with solid and reliable is fixed in chamber 102, is favorably improved engine totality NVH performances.

In the embodiment that the disclosure provides, the body 40 (being specially antetheca 41) is provided with multiple perforates, Multiple perforates are used as the blowby gas inlet 45.Gas blowby is entered in oil-gas separation chamber 44 via perforate, to a certain extent The flowing velocity of gas blowby can be increased.

Alternatively, each perforate is corresponded on the body 40 can be provided with accelerated passage 47, The entrance of the accelerated passage 47 is the blowby gas inlet 45, and the outlet of the accelerated passage 47 is towards the one-level Oil-gas Separation Structure 42.Gas blowby enters accelerated passage 47 from blowby gas inlet 45 and is accelerated.

In the embodiment that the disclosure provides, there can be a variety of suitable modes to construct the accelerated passage 47, For example, the accelerated passage 47 is it is so structured that the cone that the direction cross sectional dimensions from the entrance to the outlet is gradually reduced Body structure, as the lateral dimension of accelerated passage 47 is less and less, the speed of gas blowby is then increasing.

Herein it should be noted that the increase of blowby gas flows speed, can cause the flowing of machine oil oil droplet carried in gas blowby Speed increases, but can be less than the speed increase of smaller oil droplet, due to this difference, in gas blowby compared with the speed increase of larger oil droplet During acceleration, the oil droplet of different-grain diameter can collide and be combined into big particle diameter oil droplet, and this is more conducive to be adhered to primary oil On gas separation structure 42, oil-gas separation efficiency is further improved.

Also, when gas blowby is from the outlet of accelerated passage 47 outflow, due to larger speed, therefore it is even if less Oil droplets can also hit and be adhered on one-level gas oil separation structure 42, so as to be separated.Altered therefore, it is possible to isolate The most machine oil carried in gas, can also improve oil-gas separation efficiency.

In order to increase the contact area with gas blowby, the one-level gas oil separation structure 42 is it is so structured that have multiple ribs 421 platy structure, drainback passage 422 is formed between adjacent two ribs 421.Wherein, for the ease of being adhered to primary oil Machine oil on gas separation structure 42 is flowed downward in the presence of self gravitation to reclaim, and rib 421 can pen along the vertical direction Directly extend, in such a case, it is possible to which so that the machine oil being adhered on one-level gas oil separation structure 42 is in two adjacent ribs By less resistance during being flowed in drainback passage 422 between bar 421.

In addition, in the embodiment that the disclosure provides, the gas blowby outlet 46 is it is so structured that the body 40 The multiple strip gabs being set parallel to each other opened up on (being specially upper wall 403), the two level gas oil separation structure 43 construct For the curtain sheet structure outwards to be extended back from each strip gab, the stream with change from the gas blowby of strip gab outflow Dynamic direction.Thus, it is possible to increase the contact area of two level gas oil separation structure 43 and gas blowby, consequently facilitating entrained by gas blowby The adhesion of oil droplet.

In addition, in the embodiment that the disclosure provides, it can be arranged as the gas blowby according to being actually needed and enter The ginseng such as quantity and size, the length of accelerated passage and lateral dimension, the quantity of strip gab and size of above-mentioned perforate of mouth 45 Number, to meet actual demand.

Flow path and Oil-gas Separation process of the gas blowby in gs-oil separator 4 are described below with reference to Fig. 3.Gas blowby from Blowby gas inlet 45 is entered in accelerated passage 47 and is accelerated, and primary oil qi leel is struck after the outlet of accelerated passage 47 outflow From in structure 42, Oil-gas Separation is realized；Oil droplet after separation leaves and dropped onto on inner bottom plating 2 downwards along drainback passage 422, most Realize that machine oil recycles by being flowed into by oil return opening 22 in oil sump (namely crankcase).But because gas blowby strikes one-level Flow direction changes after gas oil separation structure 42, is flowing through from the lower edge of one-level gas oil separation structure 42 and is flowing backward When, the machine oil dripped from drainback passage 422 can be blown afloat, so as to carry machine oil again.But without having to worry about because when gas blowby continue to When flowing and being flowed out from gas blowby outlet 46 afterwards, being arranged on the two level oil-gas separation mechanism 43 at gas blowby outlet 46 can enter to gas blowby The Oil-gas Separation of row again so that the gas blowby flowed out eventually through crankcase ventilation mouth 11 more cleans.

On the basis of above-mentioned technical proposal, the disclosure also provides a kind of engine, including crankcase and gas handling system, its In, the engine includes above-mentioned cylinder cap assembly, the cylinder cap assembly by the air hatch 21 with Crankcase connection, is connected by the crankcase ventilation mouth 11 with the gas handling system, with cause by Oil-gas Separation it Rear Crank Case gas blowby reenters combustion chambers burn.

The preferred embodiment of the disclosure is the foregoing is only, not limiting the disclosure, all essences in the disclosure God any modification, equivalent substitution and improvements made etc., should be included within the protection domain of the disclosure with principle.

Claims (10)

1. a kind of gs-oil separator (4), it is characterised in that the gs-oil separator (4) includes body (40), the body (40) It is provided with the fixed part (41), one-level gas oil separation structure (42) and two level gas oil separation structure (43) for installation, described Body (40) defines oil-gas separation chamber (44) and is provided with the blowby gas inlet (45) connected with the oil-gas separation chamber (44), alters Gas exports (46), and the one-level gas oil separation structure (42) is arranged in the oil-gas separation chamber (44), and is altered close to described Gas entrance (45), the two level gas oil separation structure (43) are arranged on the body (40) outside and exported positioned at the gas blowby (46) place.

2. gs-oil separator (4) according to claim 1, it is characterised in that be provided with multiple open on the body (40) Hole, multiple perforates are used as the blowby gas inlet (45).

3. gs-oil separator (4) according to claim 2, it is characterised in that correspond to each institute on the body (40) State perforate and be provided with accelerated passage (47), the entrance of the accelerated passage (47) is the blowby gas inlet (45), described to accelerate to lead to The outlet in road (47) is towards the one-level gas oil separation structure (42).

4. gs-oil separator (4) according to claim 3, it is characterised in that the accelerated passage (47) is configured to from institute State the cone structure that entrance is gradually reduced to the direction cross sectional dimensions of the outlet.

5. gs-oil separator (4) according to claim 1, it is characterised in that one-level gas oil separation structure (42) structure Make as the platy structure with multiple ribs (421), drainback passage (422) is formed between adjacent two ribs (421).

6. gs-oil separator (4) according to claim 1, it is characterised in that the gas blowby outlet (46) is configured to described The multiple strip gabs being set parallel to each other opened up on body (40), the two level gas oil separation structure (43) are configured to from every The curtain sheet structure that the individual strip gab outwards extends back, to change the flowing side of the gas blowby from strip gab outflow To.

7. the gs-oil separator (4) according to any one in claim 1-6, it is characterised in that body (40) bag Include antetheca (401), rear wall (402), upper wall (403) and two side walls, the oil-gas separation chamber (44) by the antetheca (401), Rear wall (402), upper wall (403) and two side walls surround, and the fixed part (41) is configured to the peripheral edge from the antetheca (401) The ear that edge extends outward, the blowby gas inlet (45) are arranged at the antetheca (401), the one-level gas oil separation structure (42) inner surface being configured to from the upper wall (403) extends downwardly, and the lower end of the one-level gas oil separation structure (42) Edge is higher than the lower edge of the rear wall (402), and the gas blowby outlet (46) is arranged at the upper wall (403), the two level Gas oil separation structure (43) is arranged at the outer surface of the upper wall (403) at gas blowby outlet (46) place.

8. a kind of cylinder cap assembly, including housing (1), it is characterised in that the cylinder cap assembly also includes Inner bottom plating (2), the inner bottom plating (2) surround the chamber (102) of sealing with the housing (1), and the inner bottom plating (2) is provided with back Hydraulic fluid port (22) and the gas blowby air hatch (21) connected with the chamber (102), the housing (1) are provided with and the chamber (102) the crankcase ventilation mouth (11) of connection, the gas blowby air hatch (21) and the crankcase ventilation mouth (11) limit gas blowby Flow direction, the chamber (102) is interior to be provided with oil gas rough segmentation structure (3) and oil gas sub-structure, the oil gas rough segmentation structure (3) set close to the blowby gas inlet (45), the oil gas essence separation structure is arranged on the oil gas along the blowby gas flows direction The downstream of rough segmentation structure (3), wherein, the oil gas essence separation structure is the Oil-gas Separation described in any one in claim 1-7 Device (4), the gs-oil separator (4) are connected to the housing (1) and/or the inner bottom plating (2) by the fixed part (41).

9. cylinder cap assembly according to claim 8, it is characterised in that the oil gas rough segmentation structure (3) is more The baffle plate of individual cross arrangement.

10. a kind of engine, including crankcase and gas handling system, it is characterised in that the engine includes claim 8 or 9 Described cylinder cap assembly, the cylinder cap assembly are connected by the air hatch (21) and the crankcase It is logical, connected by the crankcase ventilation mouth (11) with the gas handling system.