CN214533278U

CN214533278U - Novel engine crankcase structure

Info

Publication number: CN214533278U
Application number: CN202120872751.8U
Authority: CN
Inventors: 杨璐
Original assignee: Leo Group Zhejiang Pump Co Ltd
Current assignee: Leo Group Zhejiang Pump Co Ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-10-29
Anticipated expiration: 2031-04-26

Abstract

The utility model provides a novel engine crankcase structure, the power distribution box comprises a box body and a box cover, internally mounted has the bent axle, the connecting rod, piston and camshaft, the corresponding position is equipped with the crankshaft mounting hole respectively in the middle of box and the case lid, one side is equipped with the camshaft mounting hole that corresponds, the gas outlet department of box is equipped with check valve and respiratory chamber, the check valve is located the interior angle region that the respiratory chamber is close to the crankshaft mounting hole, be equipped with baffle an and baffle b in the respiratory chamber, the respiratory chamber lateral surface is equipped with the gas outlet, the external angle bottom region that the respiratory chamber is located camshaft mounting hole one side is equipped with the oil penetration hole, one side or both sides of baffle an and baffle b are equipped with a plurality of baffles. The utility model discloses a to the configuration optimization of crankcase, fully separate oil-gas mixture, make the machine oil content that the respiratory chamber gas outlet came out fall to minimumly, reduced the content of HC among the engine exhaust, effectively avoided phenomenons such as ubiquitous machine oil that burns, cluster oil simultaneously, ensured in addition that the bent axle center is fixed a position from top to bottom with one heart, improved engine performance.

Description

Novel engine crankcase structure

Technical Field

The utility model relates to an engine structure technical field, in particular to novel engine crankcase structure.

Background

When the engine works, a small amount of high-temperature and high-pressure gas flees into the crankcase from the spaces among the piston ring group, the cylinder wall, the valve stem, the valve guide pipe and the supercharger bearing, the fleeing gas can dilute engine oil, the gas pressure in the crankcase can be increased, the power output of the engine is reduced, and the sealing performance is damaged. The breather chamber is mainly used for keeping the pressure balance between the inside of a crankcase and the outside of a machine body when the engine works, simultaneously separating engine oil in mixed waste gas in the recovery box, discharging the waste gas, reducing oil leakage of the engine, lightening the corrosion of parts and improving the economical efficiency of the engine.

If the breathing chamber is unreasonable in design and arrangement, the separating system cannot separate oil and gas, so that the content of engine oil discharged from an exhaust port of the breathing chamber is high, the content of HC (hydrocarbon) in engine exhaust is increased, the health of a human body is directly harmed, the environment of human life is further influenced, and in addition, the engine is also subjected to undesirable phenomena such as engine oil burning, oil channeling and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve prior art's problem, provide a novel engine crankcase structure, the utility model discloses a to the configuration optimization of crankcase, fully separate oil-gas mixture, make the machine oil content that the respiratory chamber gas vent came out fall to minimumly, reduced the content of HC among the engine exhaust, effectively avoided phenomenons such as ubiquitous machine oil that burns, cluster oil simultaneously, ensured in addition that the bent axle central point is fixed a position from top to bottom with one heart, improved engine performance.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a novel engine crankcase structure, includes box and case lid, installs bent axle, connecting rod, piston and camshaft in box and the case lid, and the box is equipped with the crankshaft mounting hole respectively with case lid intermediate position corresponding, and crankshaft mounting hole one side is equipped with the camshaft mounting hole that corresponds, the gas outlet department of box is equipped with check valve and breather chamber, and check valve is located the interior angle region that the breather chamber is close to the crankshaft mounting hole, and the breather chamber is located camshaft mounting hole one side and is close to the outer angle region and be equipped with the baffle an of leanin, and the breather chamber is kept away from camshaft mounting hole one side and is close to the outer angle region and be equipped with the baffle b that leans out, and the breather chamber lateral surface is equipped with the gas outlet, and the outer angle bottom region that the breather chamber is located camshaft mounting hole one side is equipped with the oil passing hole, and one side or both sides of baffle an and baffle b are equipped with a plurality of baffles. The box body and the box cover are locked through a certain number of bolts distributed in the circumferential direction, when the crankshaft connecting rod mechanism runs, the air inlet and power stroke piston runs downwards, and air distribution is achieved through the cam. The crankcase cavity receives the effort of piston, and pressure variation, the mist in the box is pressed into the breathing chamber through the check valve, carries out oil-gas separation, and the gas after the separation flows out through the gas outlet, and refrigerated machine oil accessible oil penetration hole flows into the crankcase, carries out the secondary cycle.

Preferably, the air outlet route from the one-way valve to the air outlet comprises a baffle a with the tail end of the partition board a inclined towards the inner angle at the side far away from the camshaft mounting hole, a baffle b with the inner side close to the root part region inclined towards the inner angle at the side far away from the camshaft mounting hole, a baffle c with the outer side of the partition board a inclined towards the outer angle at the side far away from the camshaft mounting hole, and a baffle d with the tail end of the partition board b inclined towards the inner angle at the side far away from the camshaft mounting hole, wherein the baffle c is positioned in the region between the baffle b and the baffle d. The partition board is used as a main trunk, and the baffle board is used as a branch to form a labyrinth structure of the breathing chamber.

Preferably, the angle between the partition plate a and the baffle plate a is greater than 90 degrees, the angle between the partition plate b and the baffle plate b, the angle between the partition plate a and the baffle plate c, and the angle between the partition plate b and the baffle plate d are less than 90 degrees in the air outlet route from the one-way valve to the air outlet. The baffle and the baffle form V-shaped air passages with different angles.

Preferably, the partition plate a and the partition plate b are parallel to each other.

Preferably, the position of the air outlet is higher than that of the oil penetration hole, so that separated engine oil is prevented from flowing out of the air outlet.

Preferably, the corresponding positions of the two sides of the box body and the box cover are respectively provided with a positioning pin hole, and the box body and the box cover are positioned at the center through the positioning pin holes so that the crankshafts are concentric up and down.

The beneficial effects of the utility model reside in that: the utility model discloses a to the configuration optimization of crankcase, fully separate oil-gas mixture, make the machine oil content that the respiratory chamber gas vent came out fall to minimumly, reduced the content of HC among the engine exhaust, effectively avoided phenomenons such as ubiquitous machine oil that burns, cluster oil simultaneously, ensured in addition that the bent axle center is fixed a position from top to bottom with one heart, stable in structure improves the engine performance.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is a front view of the box body of the present invention;

FIG. 3 is a longitudinal sectional view of the box body of the present invention;

FIG. 4 is a longitudinal sectional perspective view of the middle box body of the present invention;

FIG. 5 is a transverse sectional view of the box body of the present invention;

figure 6 is a transverse cross-sectional view of the breathing chamber of the present invention;

FIG. 7 is a schematic end view of the box body of the present invention;

fig. 8 is a schematic end view of the box cover of the present invention.

The main elements in the figures are symbolically illustrated: 1. a box body; 2. a box cover; 3. a crankshaft; 4. a connecting rod; 5. a piston; 6. a one-way valve; 7. a breathing chamber; 7.1, a partition plate a; 7.2, a clapboard b; 7.3, an air outlet; 7.4, oil penetration holes; 7.5, a baffle plate a; 7.6, baffle b; 7.7, a baffle c; 7.8, a baffle d; 100. a crankshaft mounting hole; 200. a camshaft mounting hole; 300. a positioning pin hole; 400. a crankshaft chamber; 500. a lumen; 600. a pushrod chamber.

Detailed Description

The invention will be further explained by means of the following description and the attached drawings.

The implementation mode is as follows: as shown in fig. 1-5, a novel engine crankcase structure comprises a case body 1 and a case cover 2, a crankshaft 3 and a connecting rod 4 are arranged in the case body 1 and the case cover 2, piston 5 and camshaft, the middle corresponding position of box 1 and case lid 2 is equipped with bent axle mounting hole 100 respectively, bent axle mounting hole 100 one side is equipped with corresponding camshaft mounting hole 200, the gas outlet department of box 1 is equipped with check valve 6 and breather chamber 7, check valve 6 is located breather chamber 7 and is close to the interior angle region of bent axle mounting hole 100, breather chamber 7 is located camshaft mounting hole 200 one side and is close to the exterior angle region and be equipped with inside tilt's baffle a7.1, breather chamber 7 is kept away from camshaft mounting hole 200 one side and is close to the exterior angle region and be equipped with the baffle b7.2 that leans out, breather chamber 7 lateral surface is equipped with gas outlet 7.3, breather chamber 7 is located the exterior angle bottom region of camshaft mounting hole 200 one side and is equipped with oil-penetrating hole 7.4, one side or both sides of baffle a7.1 and baffle b7.2 are equipped with a plurality of baffles. The partition plate a7.1 and the partition plate b7.2 are parallel to each other, and the position of the air outlet 7.3 is higher than that of the oil penetrating hole 7.4.

Referring to fig. 6, the air outlet route from the check valve 6 to the air outlet 7.3 includes a baffle a7.5 whose end of the partition a7.1 is inclined towards the inner corner at the side far from the camshaft mounting hole 200, a baffle b7.6 whose inner side of the partition b7.2 is adjacent to the root part and inclined towards the inner corner at the side far from the camshaft mounting hole 200, a baffle c7.7 whose outer side of the partition a7.1 is inclined towards the outer corner at the side far from the camshaft mounting hole 200, and a baffle d7.8 whose end of the partition b7.2 is inclined towards the inner corner at the side far from the camshaft mounting hole 200, wherein the baffle c7.7 is located between the baffle b7.6 and the baffle d 7.8. According to the air outlet route from the check valve 6 to the air outlet 7.3, the angle between the partition plate a7.1 and the baffle plate a7.5 is larger than 90 degrees, the angle between the partition plate b7.2 and the baffle plate b7.6, the angle between the partition plate a7.1 and the baffle plate c7.7 and the angle between the partition plate b7.2 and the baffle plate d7.8 are smaller than 90 degrees.

Referring to fig. 7-8, the case body 1 and the case cover 2 are respectively provided with a positioning pin hole 300 at corresponding positions on both sides thereof, and when the case body 1 and the case cover 2 are mounted, the centers of the case body 1 and the case cover 2 are positioned by the positioning pin holes 300, so that the crankshaft 3 is concentric up and down.

The utility model discloses oil-gas separation's process is: referring to fig. 1 and fig. 3-6, firstly, the oil-gas mixture in the crankshaft chamber 400, due to the reciprocating and cyclic motion of the piston 5, changes in the pressure in the chamber, so that the oil-gas mixture reaches the push rod chamber 600 through the channel 500, and at this time, the oil-gas mixture obtains an initial speed, and generates a vortex to perform primary oil-gas separation; then, the once separated oil-gas mixture reaches the breathing chamber 7 through the channels of the push rod chamber 600 and the breathing chamber 7, and the separated and cooled engine oil flows into the push rod chamber 600 to perform secondary circulation; then, the oil-gas mixture from the push rod chamber 600 and the channel has an initial velocity, a first vortex is generated in the breathing chamber 7, the oil-gas mixture collides with the chamber wall after passing through the partition plate a7.1 and the baffle plate a7.5, a second vortex is generated, 3 vortexes are generated after passing through 3V-shaped structures formed by the baffle plate b7.6, the baffle plate c7.7 and the baffle plate d7.8, the oil-gas mixture finally generates a final vortex around the gas outlet 7.3, and 6 vortex circulation is performed in the breathing chamber group in total, so that the oil-gas mixture is fully separated through the multi-vortex multi-maze design; finally, the gas with low oil content flows out from the air outlet 7.3 of the breathing chamber 7, and the cooled oil can flow into the crankshaft chamber 400 through the oil penetration hole 7.4 at the bottommost part of the breathing chamber 7 for secondary circulation.

The above description is only the specific embodiments of the present invention, but the structural features of the present invention are not limited thereto, the present invention can be used in similar products, and any person skilled in the art is in the field of the present invention, and all the changes or modifications made are covered by the claims of the present invention.

Claims

1. The utility model provides a novel engine crankcase structure, includes box (1) and case lid (2), installs bent axle (3), connecting rod (4), piston (5) and camshaft in box (1) and case lid (2), and the middle corresponding position of box (1) and case lid (2) is equipped with crankshaft mounting hole (100) respectively, and crankshaft mounting hole (100) one side is equipped with camshaft mounting hole (200) that correspond, its characterized in that: a one-way valve (6) and a breathing chamber (7) are arranged at an air outlet of the box body (1), the one-way valve (6) is positioned in an inner corner area of the breathing chamber (7) close to the crankshaft mounting hole (100), an inward-inclined partition plate a (7.1) is arranged in an outer corner area of one side of the breathing chamber (7) close to the camshaft mounting hole (200), and an outward-inclined partition plate b (7.2) is arranged in an outer corner area of one side of the breathing chamber (7) far away from the camshaft mounting hole (200);

an air outlet (7.3) is formed in the outer side face of the breathing chamber (7), an oil penetrating hole (7.4) is formed in the bottom area of an outer corner of one side, located on the camshaft mounting hole (200), of the breathing chamber (7), and a plurality of baffle plates are arranged on one side or/and two sides of the partition plate a (7.1) and the partition plate b (7.2).

2. The novel engine crankcase structure of claim 1, wherein: the air outlet route from the one-way valve (6) to the air outlet (7.3) comprises a baffle plate a (7.5) inclined towards the inner angle at one side far away from the camshaft mounting hole (200) at the tail end of a baffle plate a (7.1), a baffle plate b (7.6) inclined towards the inner angle at one side far away from the camshaft mounting hole (200) at the inner side of a baffle plate b (7.2) close to the root region, a baffle plate c (7.7) inclined towards the outer angle at one side far away from the camshaft mounting hole (200) at the outer side of the baffle plate a (7.1), and a baffle plate d (7.8) inclined towards the inner angle at one side far away from the camshaft mounting hole (200) at the tail end of the baffle plate b (7.2), wherein the baffle plate c (7.7) is positioned in the region between the baffle plate b (7.6) and the baffle plate d (7.8).

3. The novel engine crankcase structure of claim 2, wherein: and in the air outlet route from the check valve (6) to the air outlet (7.3), the angle between the partition plate a (7.1) and the baffle plate a (7.5) is larger than 90 degrees, the angle between the partition plate b (7.2) and the baffle plate b (7.6), the angle between the partition plate a (7.1) and the baffle plate c (7.7), and the angle between the partition plate b (7.2) and the baffle plate d (7.8) are smaller than 90 degrees.

4. The novel engine crankcase structure of claim 2, wherein: the partition a (7.1) and the partition b (7.2) are parallel to each other.

5. The novel engine crankcase structure of claim 1, wherein: the position of the air outlet (7.3) is higher than that of the oil penetrating hole (7.4).

6. A novel engine crankcase structure according to any one of claims 1-5, characterized in that: and positioning pin holes (300) are respectively arranged at corresponding positions on two sides of the box body (1) and the box cover (2).