Engine shell

Abstract

The utility model discloses an engine shell which comprises a box body and an air cylinder body, the air cylinder body and the box body are integrally formed, a box body flange used for being connected with a box cover is arranged on the box body and located on the side portion of the air cylinder body, and reinforcing ribs are connected between the box body and the air cylinder body. And the reinforcing ribs and the box body flange are positioned on the same side of the box body. According to the scheme, the problem that in the prior art, leakage is prone to occurring in the area, close to an air cylinder body, of a flange face where a box body and a box cover of an engine shell are connected is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to an engine, in particular to an engine shell. BACKGROUND

[0002] The engine shell refers to the component of the engine for providing support and working space for the moving parts. The engine shell generally comprises a box body, a box cover and a cylinder body, the cylinder body is connected and fixed with the box body, the box cover is located at the side of the cylinder body and is connected with the flange of the box body, and a sealing gasket is arranged at the flange surface for sealing. With the application of turbocharging, in-cylinder direct injection and other technologies in the engine, and the continuous pursuit of extreme light weight of the engine, the working environment inside the engine shell becomes more severe, and high temperature and high pressure and other factors put forward higher requirements for the sealing performance of the engine shell. It is found in the use of the existing engine shell that the flange surface connected between the box body and the box cover is prone to leakage in the area close to the cylinder body, thereby affecting the performance of the entire engine.

[0003] Chinese patent document CN204003143U discloses a high-rigidity diesel engine body assembly, comprising a body and a gear chamber cover, the left end surface of the body is provided with a plurality of bolt holes, the bolt holes are connected with the surface reinforcing ribs of the body or are oriented in the same direction, the unequal-distance bolts pass through the gear chamber cover and cooperate with the bolt holes to fix the gear chamber cover on the body; the front surface, the top surface and the rear surface of the body are each provided with two circumferential reinforcing ribs and a plurality of axial reinforcing ribs, the reinforcing ribs are connected in an interlaced manner, the top surface of the body is provided with two bolt holes oriented in the same direction as the top surface reinforcing ribs, and the bolt holes of the left end surface of the body are connected with the plurality of reinforcing ribs. The scheme of the prior art arranges the reinforcing ribs on the outer surface, the inner cavity of the body and the inner cavity of the gear chamber cover; arranges the bolt holes and the positioning pin hole positions of the body gear chamber end surface and the gear chamber cover, and transmits the force of the four bolts of the cylinder body, the force of the main bearing of the body assembly and the force of the camshaft bearing on the body and the gear chamber cover as straight lines as far as possible, so that the rigidity of the body assembly is increased, the deformation is reduced, the friction loss and the diesel engine oil consumption are reduced, the body and the gear chamber cover are prevented from cracking, the reliability and durability of the entire machine are improved, and the service life of the entire machine is increased.

[0004] The prior art above increases the rigidity of the entire body by arranging the interlaced reinforcing ribs on the front surface, the top surface and the rear surface of the entire body, so as to reduce the deformation of the body. However, in this way, the material consumption of the engine shell is significantly increased, which is contrary to the goal of light weight of the engine. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide an engine shell to solve the problem that the flange surface connected between the box body and the box cover of the engine shell in the prior art is prone to leakage in the area close to the cylinder body.

[0006] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides an engine shell, including box and cylinder body, the cylinder body is integrally formed with the box, the box is provided with the box flange for connecting the box cover on the side of the cylinder body, the box is connected with the reinforcing rib between the cylinder body, and the reinforcing rib is located on the same side of the box flange of the box.

[0007] The beneficial effects of the basic scheme are that: by the setting of the reinforcing rib, the rigidity of the area of the box flange of the box near the cylinder body is enhanced, thereby reducing the deformation of the box flange near the cylinder body, and further reducing the leakage phenomenon caused by the damage of the sealing gasket at the flange surface, which is beneficial to improve the sealing performance of the engine shell, thereby solving the problem that the flange surface of the box and the box cover of the engine shell in the prior art is prone to leakage in the area near the cylinder body.

[0008] Preferably, the reinforcing rib is arranged on the box in the direction away from the cylinder body. By such an arrangement, the area of the box flange of the box can better improve the rigidity under the action of the reinforcing rib, thereby being beneficial to further improve the sealing performance of the engine shell.

[0009] Preferably, the distance between the reinforcing rib and the flange surface of the box flange is not more than 80㎜. By such an arrangement, the reinforcing rib is avoided from being too far away from the box flange to weaken the reinforcing effect of the reinforcing rib on the box flange, thereby being beneficial to fully exert the effect of the reinforcing rib to improve the rigidity of the box and further improve the sealing performance of the engine shell.

[0010] Preferably, the extension direction of the reinforcing rib is parallel to the flange surface of the box flange. By such an arrangement, the area of the box flange of the box can better improve the rigidity under the action of the reinforcing rib, thereby being beneficial to further improve the sealing performance of the engine shell.

[0011] Preferably, the thickness of the cross section of the reinforcing rib gradually decreases with the increase of the distance between the cross section and the cylinder body. By such an arrangement, it is beneficial to fully exert the reinforcing effect of the reinforcing rib on the rigidity of the box, while avoiding the excessive use of reinforcing rib material to increase the cost.

[0012] Preferably, the thickness of the reinforcing rib is not less than 2㎜. By such an arrangement, the thickness of the reinforcing rib is avoided from being too small to weaken the effect of the reinforcing rib.

[0013] Preferably, the thickness of the box flange in the area close to the cylinder block is not less than 4mm. With such an arrangement, the rigidity of the box flange itself is improved, thereby further improving the sealing performance of the engine housing.

[0014] Preferably, the reinforcing rib is located at the obtuse angle space formed between the cylinder block and the box. With such an arrangement, the reinforcing rib can fully play a role in reinforcing the rigidity of the box, thereby further improving the sealing performance of the engine housing.

[0015] The utility model has the following beneficial effects:

[0016] The present scheme sets a reinforcing rib at the position of the box close to the box flange, and appropriately increases the thickness of the box flange in the area close to the cylinder block, so that the rigidity of the box flange of the box in the area close to the cylinder block is enhanced, thereby reducing the damage of the deformation of the box to the sealing gasket of the flange face, and further improving the sealing performance of the engine housing. Compared with the prior art of increasing the reinforcing ribs arranged in a staggered manner on the whole engine body, the material consumption of the engine housing is significantly reduced, and the design of the original engine housing is less changed, thereby realizing the low-cost solution to the leakage problem of the engine housing. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of an embodiment of the utility model of an engine housing;

[0018] Figure 2 It is a top view of the utility model of an engine housing in a normal use state;

[0019] Figure 3 It is Figure 2 The local enlarged view of A in the middle. DETAILED DESCRIPTION

[0020] As known by those skilled in the art, the flange face of the box flange in the utility model refers to the face of the box flange facing the box cover.

[0021] The following is further described in detail through specific embodiments:

[0022] The reference signs in the drawings of the specification include: box 1, cylinder block 2, reinforcing rib 3, box cover 4, box flange 5.

[0023] The embodiment is basically as shown in the accompanying drawings Figure 1 , Figure 2 and Figure 3As shown: an engine housing, including a box 1 and a cylinder block 2, the cylinder block 2 is integrally formed with the box 1. In this embodiment, the cylinder block 2 is inclined and connected with the upper part of the box 1, so that the cylinder block 2 and the top of the box 1 form an obtuse angle space. The box flange 5 for connecting the box cover 4 is arranged on the side of the box 1. In this embodiment, the thickness L3 of the area of the box flange 5 close to the cylinder block 2 is not less than 4mm, such as 4mm, 5mm, 6mm, etc. The reinforcing rib 3 is connected between the box 1 and the cylinder block 2, and the reinforcing rib 3 is located on the same side of the box flange 5 of the box 1.

[0024] In this embodiment, the reinforcing rib 3 is preferably arranged at the top of the box 1, that is, the reinforcing rib 3 is located at the obtuse angle space formed between the cylinder block 2 and the box 1. Part of the reinforcing rib 3 is connected with the cylinder block 2, and the other part is connected with the box 1. In this embodiment, the reinforcing rib 3 is integrally formed with the box 1 and the cylinder block 2. The reinforcing rib 3 extends on the box 1 away from the cylinder block 2. Preferably, the extending direction of the reinforcing rib 3 is parallel to the flange surface of the box flange 5. The distance L1 between the reinforcing rib 3 and the flange surface of the box flange 5 is not more than 80mm, such as 70mm, 60mm, 50mm, 40mm, etc. In this embodiment, the thickness of the cross section of the reinforcing rib 3 gradually decreases as the distance between the cross section and the cylinder block 2 increases. In this embodiment, the thickness L2 of the reinforcing rib 3 is not less than 2mm, such as 2mm, 3mm, 4mm, etc.

[0025] Compared with the prior art, by arranging the reinforcing rib 3 at the position close to the box flange 5 of the box 1, and appropriately increasing the thickness of the area of the box flange 5 close to the cylinder block 2, the rigidity of the area of the box flange 5 of the box 1 close to the cylinder block 2 is enhanced, thereby reducing the damage of the deformation of the box 1 to the gasket of the flange surface, and further improving the sealing performance of the engine housing.

[0026] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should be considered as the protection scope of the present application, which will not affect the effect and practicability of the present application.

Claims

1. An engine housing comprising a case and a cylinder block, said cylinder block being integrally formed with the case, a case flange for connecting a case cover being provided on the case at a side of the cylinder block, characterized in that: The reinforcing rib is connected between the cylinder block and the case, and the reinforcing rib and the case flange are located on the same side of the case.

2. An engine housing as claimed in claim 1, characterized in that: The reinforcing rib is arranged on the case and extends away from the cylinder block.

3. An engine housing as claimed in claim 2, characterised in that: The distance between the reinforcing rib and the flange face of the case flange is not greater than 80mm.

4. An engine housing as claimed in claim 3, characterised in that: The extending direction of the reinforcing rib is parallel to the flange face of the case flange.

5. An engine housing as claimed in claim 4, characterised in that: The thickness of the cross section of the reinforcing rib gradually decreases as the distance between the cross section and the cylinder block increases.

6. An engine housing as claimed in claim 5, characterised in that: The thickness of the reinforcing rib is not less than 2mm.

7. An engine housing as claimed in claim 6, characterised in that: The thickness of the case flange in the area close to the cylinder block is not less than 4mm.

8. An engine housing according to any one of claims 1-7, characterized in that: The reinforcing rib is located at the obtuse angle space formed between the cylinder block and the case.

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