CN216477587U - Engine cylinder block, engine and engineering machinery - Google Patents

Abstract

The utility model provides an engine cylinder body, an engine and engineering machinery, and relates to the technical field of engines. The problem of most engine breathing system integration in the cylinder head cover at present, its structure is complicated and can lead to the engine height higher is solved.

Description

Engine cylinder block, engine and engineering machinery

Technical Field

The utility model relates to the technical field of engines, in particular to an engine cylinder body, an engine and engineering machinery.

Background

In the running process of the engine, gas in a cylinder body inevitably enters a crankcase, oil-gas mixed gas is generated in the crankcase, and if the oil-gas mixed gas cannot be discharged from the crankcase in time, larger pressure can be generated in the crankcase to influence the performance of the engine, so that blow-by gas of the crankcase needs to be discharged. However, most of the breathing systems of the engines are integrated in the cylinder head cover at present, and the structure of the breathing systems is complex and can cause the height of the engines to be higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that most of the breathing systems of the engine are integrated in a cylinder head cover at present, the structure is complex and the height of the engine is high.

In order to solve the problems, the utility model provides an engine cylinder body which comprises an engine cylinder body and a crude oil-gas separation part, wherein the crude oil-gas separation part is arranged on the outer wall of the engine cylinder body, a crude oil-gas separation cavity is arranged inside the crude oil-gas separation part, the crude oil-gas separation part comprises a blocking structure, the crude oil-gas separation part is provided with a crude separation outlet, the blocking structure is arranged in the crude oil-gas separation cavity, crankcase blow-by gas in a crankcase of the engine cylinder body is suitable for entering the crude oil-gas separation cavity and colliding with the blocking structure for oil-gas separation, and the crude separation outlet is used for discharging the crankcase blow-by gas after oil-gas separation.

Compared with the prior art, the engine cylinder block provided by the utility model has the following beneficial effects:

can set up thick oil-gas separation portion in engine cylinder body outer wall front portion, and then reduce the height of engine, thick oil-gas separation chamber is used for separating the crankcase blowby gas, simplify engine cylinder body structure in order to make things convenient for the casting, the crankcase blowby gas is through getting into thick oil-gas separation chamber 21 and the collision from the inside upward movement of crankcase and blockking the structure, make oil through the collision with blockking the structure drip and adhere to on blockking the structure, realize oil-gas separation, and discharge the crankcase blowby gas after the oil-gas separation through the thick separation export. Therefore, the breathing system is prevented from being integrated in the cylinder cover of the engine, and the problems that most of the breathing systems of the engine are integrated in the cylinder cover at present, the structure is complex and the height of the engine is high are solved.

Furthermore, the crude oil-gas separation part is arranged at the position, close to the crankshaft installed in the crankcase, in the middle of the outer wall of the engine cylinder body.

Furthermore, an exhaust structure is arranged at the position of the crankcase, the blocking structure is positioned above the exhaust structure, and the inside of the crankcase is communicated with the crude oil-gas separation cavity through the exhaust structure.

Further, thick oil-gas separation portion still includes the apron, the apron connect in engine cylinder body outer wall to enclose with engine cylinder body closes and forms thick oil-gas separation chamber, thick separation export is seted up in on the apron, block the structure set up in on the apron.

Further, the exhaust structure comprises a plurality of exhaust ports distributed along the axial direction of the crankcase, and the blocking structure comprises a plurality of blocking plates arranged at intervals, wherein each blocking plate is at least used for blocking the crankcase blowby gas exhausted from one exhaust port.

Furthermore, the blocking plate is bent in an arc shape towards the direction deviating from the direction corresponding to the exhaust port, and the crankcase blowby gas is discharged from the exhaust port and then collides with the highest position corresponding to the blocking plate.

Further, the crankcase ventilation structure also comprises a fine separator, the fine separator is arranged on the outer wall of the engine block body, and the coarse separation outlet is suitable for being communicated with the fine separator.

In a further pair, the engine cylinder body further comprises an air return pipeline, one end of the air return pipeline is connected with an exhaust port of the fine separator, and the other end of the air return pipeline is communicated with the combustion chamber of the engine cylinder body.

In addition, the utility model also provides an engine comprising the engine block.

Since the technical improvement and the technical effect obtained by the engine of the present invention are the same as those of the engine block, the engine will not be described.

In addition, the utility model also provides engineering machinery comprising the engine.

Since the technical improvement and the technical effect of the construction machine of the present invention are the same as those of the engine, the construction machine will not be described.

Drawings

FIG. 1 is a front view of an engine block body of an embodiment of the present invention;

FIG. 2 is a top view of an engine block body of an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along the line A-A in FIG. 2;

fig. 4 is a schematic structural view of a cover plate of an embodiment of the present invention.

Description of reference numerals:

1-an engine cylinder body, 2-a crude oil-gas separation part, 21-a crude oil-gas separation cavity, 22-a crude separation outlet, 23-a baffle, 24-a cover plate, 3-an exhaust port, 4-a fine separator and 5-a crankcase.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it is to be understood that the terms "on" and the like indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 3, the engine cylinder block according to the embodiment of the utility model includes an engine cylinder block body 1 and a crude oil-gas separation portion 2, where the crude oil-gas separation portion 2 is configured to be disposed on an outer wall of the engine cylinder block body 1, a crude oil-gas separation cavity 21 is disposed inside the crude oil-gas separation portion 2, the crude oil-gas separation portion 2 includes a blocking structure, the crude oil-gas separation portion 2 is provided with a crude separation outlet 22, the blocking structure is disposed in the crude oil-gas separation cavity 21, crankcase blowby gas in the crankcase is suitable for entering the crude oil-gas separation cavity 21 and colliding with the blocking structure for oil-gas separation, and the crude separation outlet 22 is configured to discharge the crankcase blowby gas after oil-gas separation.

In this embodiment, combine fig. 1 to fig. 3, set up thick oil-gas separation portion 2 in the front portion of 1 outer wall of engine cylinder body, and then reduce the engine height, thick oil-gas separation chamber 21 is used for carrying out oil-gas separation to the crankcase blowby gas, simplify the convenient casting of engine cylinder body structure, and when the engine operation, have in partly combustible mixture and combustion product scurried into the crankcase by the cylinder through the piston ring, the inside crankcase blowby gas upward movement of crankcase gets into in thick oil-gas separation chamber 21 and collides the barrier structure, make oil drip attached to on the barrier structure through the collision with the barrier structure, realize oil-gas separation, and discharge crankcase blowby gas after the oil-gas separation through rough separation export 22. Therefore, the breathing system is prevented from being integrated in the cylinder cover of the engine, and the problems that most of the breathing systems of the engine are integrated in the cylinder cover at present, the structure is complex and the height of the engine is high are solved.

Optionally, an exhaust structure is arranged at the crankcase, the blocking structure is located above the exhaust structure, and the exhaust structure communicates the inside of the crankcase with the crude oil-gas separation chamber 21.

Here, the crankcase is provided with an exhaust structure, and specifically, the crankcase blowby gas enters the crude oil-gas separation chamber 21 upwards through the exhaust structure and collides with a blocking structure, and the blocking structure is located above the exhaust structure, so that the principle that the crankcase blowby gas with heat flows upwards naturally is met.

Alternatively, referring to fig. 1, the crude oil-gas separation part 2 is used to be disposed at a position close to a position where a crankshaft is installed in the crankcase in the middle of the outer wall of the engine block body 1, such as a skirt of the engine block.

Here, referring to fig. 1, the crude oil and gas separation part 2 is disposed at a position near the crankshaft installed in the crankcase in the middle of the outer wall of the engine block body 1 to reduce the height of the engine, and at the same time, it is ensured that the crankcase blow-by gas discharged from the exhaust structure at the crankcase moves upward into the crude oil and gas separation chamber 21 and collides upward against the stopper structure.

Optionally, referring to fig. 4, the crude oil-gas separation part 2 further includes a cover plate 24, the cover plate 24 is adapted to be connected to the outer wall of the engine block body 1 to enclose the crude oil-gas separation chamber 21 with the engine block body 1, the crude separation outlet 22 is opened on the cover plate 24, and the blocking structure is disposed on the cover plate 24.

Here, with reference to fig. 4, the coarse oil-gas separation chamber 21 is formed by enclosing the cover plate 24 and the engine block body 1, and the coarse separation outlet 22 and the blocking structure are arranged on the cover plate 24 to jointly form an external breathing system of the engine, so that the integration of the breathing system on the engine cylinder head is avoided, the structure of the engine block body is simplified, and the height of the engine is reduced.

Optionally, referring to fig. 3 and 4, the exhaust structure includes a plurality of exhaust ports 3 distributed along the axial direction of the crankcase, and the blocking structure includes a plurality of blocking plates 23 arranged at intervals, and each blocking plate 23 is used for blocking at least the crankcase blowby gas exhausted from one of the exhaust ports 3.

Here, with reference to fig. 3 and 4, the plurality of exhaust ports 3 are distributed along the axial direction of the crankcase and combined with the blocking plate 23 to reduce the height of the whole engine, and the plurality of blocking plates 23 are arranged at intervals to make the flow path of the crankcase blowby gas discharged from the exhaust ports 3 complicated, and the collision frequency of the crankcase blowby gas complicated by the crankcase blowby gas is increased to sufficiently separate the attached oil drops from the collision frequency of the blocking plates 23, and the separated crankcase blowby gas flows out through the gap between the adjacent blocking plates 23, and each blocking plate 23 is at least used for blocking the crankcase blowby gas discharged from one exhaust port 3 to increase the oil-gas separation efficiency, so that the oil-gas separation effect is remarkable.

Alternatively, referring to fig. 3 and 4, each of the blocking plates 23 is disposed right above the corresponding exhaust port 3.

Here, referring to fig. 3 and 4, the crankcase blowby gas moves upward when it is discharged from the exhaust port 3 due to the fluidity of the gas, and thus, the provision of the blocking plate 23 just above the exhaust port 3 can block the crankcase blowby gas from colliding sufficiently to separate oil droplets.

Alternatively, referring to fig. 3 and 4, the blocking plate 23 is curved in an arc shape in a direction away from the exhaust port 3, and the crankcase blow-by gas is discharged from the exhaust port 3 and collides with the farthest distance from the exhaust port 3 corresponding to the blocking plate 23, that is, the highest position and the middle position of the arc-shaped blocking plate.

Wherein a sump bottom (not shown) is detachably connected to the lower portion of the crankcase 5.

Here, with reference to fig. 3 and fig. 4, the arc-shaped bent blocking plate 23 enables separated oil drops to fall to the bottom of the oil casing from two ends of the blocking plate 23 and be recovered, and the separated oil drops are prevented from falling into the exhaust port 3 to influence the exhaust port 3 to exhaust crankcase blowby gas, in addition, after the crankcase blowby gas is exhausted upwards from the exhaust port 3, the crankcase blowby gas collides with the middle part of the arc-shaped bent blocking plate 23, namely the farthest distance of the exhaust port 3, then moves towards the end part of the arc-shaped bent blocking plate 23 along the radian, and finally flows upwards from a gap between the blocking plates 23, and the oil-gas separation effect is better than that of a flat plate.

Optionally, referring to fig. 4, the crankcase ventilation structure further comprises a fine separator 4, the fine separator 4 is arranged on the outer wall of the engine block body 1, and the coarse separation outlet 22 is suitable for communicating with the fine separator 4.

Wherein, the fine separator 4 is driven by the oil pressure of the oil pump.

Here, combine figure 4, set up the fine separator 4 of engine cylinder body 1 outer wall and can avoid engine respiratory system integration to reduce the engine height in the cylinder cap, and crankcase blowby gas gets into fine separator 4 from rough separation export 22, and the oil droplet in the rotatory centrifugal separation oil gas of fine separator 4, and the crankcase blowby gas after the separation gets into whole car pipeline and participates in the burning and avoids the atmosphere pollution, specifically, the engine cylinder body still includes return air pipeline, return air pipeline's one end with the gas vent of fine separator is connected, return air pipeline's the other end with the combustion chamber intercommunication of engine cylinder body 1. The separated oil drops return to the oil pan, and finally the oil fleeing amount is controlled to be less than or equal to 0.2 g/h.

Additionally, an engine of another embodiment of the present invention includes an engine block as described above.

Since the technical improvement and the technical effect of the engine of the present embodiment are the same as those of the engine block body, the description of the engine will not be repeated.

In addition, the engineering machine of another embodiment of the utility model comprises the engine.

Since the technical improvement and the technical effect of the construction machine of the present embodiment are the same as those of the engine, the construction machine will not be described again.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

Claims (10)

1. The utility model provides an engine cylinder body, its characterized in that, includes engine cylinder body (1) and thick oil-gas separation portion (2), thick oil-gas separation portion (2) set up in engine cylinder body (1) outer wall, the inside of thick oil-gas separation portion (2) is provided with thick oil-gas separation chamber (21), thick oil-gas separation portion (2) are including blockking the structure, thick oil-gas separation portion (2) are provided with thick separation export (22), block the structure set up in thick oil-gas separation chamber (21), crankcase blowby gas in the crankcase of engine cylinder body (1) is suitable for the entering in thick oil-gas separation chamber (21) and collide block structure with oil-gas separation, thick separation export (22) are used for supplying the crankcase blowby gas discharge after the oil-gas separation.

2. The engine block according to claim 1, characterized in that the crude oil-gas separation portion (2) is provided in the middle of the outer wall of the engine block body (1) near a position where a crankshaft is installed in the crankcase.

3. The engine block according to claim 1, characterized in that a venting structure opens at the crankcase, the blocking structure being located above the venting structure, the venting structure communicating the crankcase interior with the crude oil-gas separation chamber (21).

4. The engine block according to claim 1, characterized in that the crude oil-gas separation part further comprises a cover plate (24), the cover plate (24) is connected to the outer wall of the engine block body (1) to form the crude oil-gas separation chamber (21) with the engine block body (1), the crude separation outlet (22) is opened on the cover plate (24), and the blocking structure is arranged on the cover plate (24).

5. The engine block according to claim 3, characterized in that the exhaust structure comprises a plurality of exhaust ports (3) distributed axially along the crankcase, and the blocking structure comprises a plurality of blocking plates (23) arranged at intervals, wherein each blocking plate (23) is at least used for blocking the crankcase blowby gas exhausted from one exhaust port (3).

6. The engine block according to claim 5, characterized in that the blocking plate (23) is curved away from the corresponding exhaust port (3), and the crankcase blow-by gas is adapted to impinge on the highest point of the corresponding blocking plate (23) after exiting from the exhaust port (3).

7. The engine block according to claim 1, further comprising a fine separator (4), the fine separator (4) being provided to an outer wall of the engine block body (1), the coarse separation outlet (22) being adapted to communicate with the fine separator (4).

8. The engine block according to claim 7, further comprising a return air duct, one end of which is connected to the exhaust port of the fine separator, and the other end of which communicates with the combustion chamber of the engine block body (1).

9. An engine comprising the engine block of claim 8.

10. A working machine, characterized by comprising an engine according to claim 9.

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