Fuel system component protection structure of engine

Abstract

The utility model provides a fuel system component protection structure of an engine, which can meet the requirement of light weight. The engine includes: an engine body; one end of the intake manifold is connected with the engine body; the throttle body is connected with the other end of the intake manifold; a fuel system component protection structure between the engine body and the intake manifold, the fuel system component protection structure including a plate member and an exhaust gas recirculation gas passage in the plate member, in which the engine body and the intake manifold are respectively fixed with the plate member by bolts on an edge portion of the plate member; and a fuel pipe as a fuel system component provided along the longitudinal direction of the plate member of the fuel system component protection structure, the edge portion of the plate member being integrally formed along the fuel pipe, the throttle body and the fuel pipe being provided so as to face each other so as to sandwich the edge portion of the plate member, the throttle body being provided on the side of the plate member close to the intake manifold, and the throttle body being provided on the side of the plate member close to the intake manifold. The fuel pipe is arranged on the side, close to the engine body, of the plate component.

Description

Technical Field

[0001] The utility model relates to a protection structure for fuel system components of an engine. Background Art

[0002] In recent years, in order to ensure access to affordable, reliable, sustainable and advanced energy for more people, research and development related to lightweighting that contributes to energy efficiency has been carried out.

[0003] In a vehicle equipped with an internal combustion engine, it is necessary to prevent fuel from leaking from fuel system components such as fuel pipes and fuel tanks even if the vehicle is damaged due to a collision, etc. Therefore, the prior art reduces damage to fuel system components by concentrating the damaged portions caused by the impact load during a collision on specific vehicle components and allowing the damaged portions of these vehicle components to absorb the energy.

[0004] For example, in an internal combustion engine of the prior art equipped with an exhaust gas recirculation (EGR) device that returns a portion of the exhaust gas to the combustion chamber, there is a method in which the exhaust gas recirculation device is used as an impact absorbing member to absorb the impact energy caused by the impact load. However, when the above-mentioned exhaust gas recirculation device is used as an impact absorbing member to absorb the impact load, the overhanging end of the structure is pushed, and the connection between the bolts connecting the structural member of the exhaust gas recirculation device and the cylinder head may be broken due to the torque. At this time, since the exhaust gas recirculation device as an impact absorbing member to absorb the impact load is no longer fixed, the fuel system components located behind the structural member of the exhaust gas recirculation device may not be protected. If the above-mentioned problem is to be eliminated, it may be necessary to increase the strength of the bolts and increase the number of fastening points between the exhaust gas recirculation device and the internal combustion engine, which increases the cost and is not conducive to the overall lightweight demand of the vehicle.

[0005] This proposal aims to achieve weight reduction in order to solve the above-mentioned problems. Furthermore, it contributes to energy efficiency.

[0006] [Prior art literature]

[0007] [Patent Document]

[0008] [Patent Document 1] Japanese Patent Publication No. 2012-87735

[0009] [Patent Document 2] Japanese Patent Publication No. H08-127254

[0010] [Patent Document 3] Japanese Patent Publication No. 2004-316583 Utility Model Content

[0011] The utility model provides a fuel system component protection structure of an engine, which can meet the demand for lightweighting.

[0012] The utility model provides a fuel system component protection structure of an engine, the engine comprising: an engine body; an intake manifold, one end of the intake manifold is connected to the engine body; a throttle body, a throttle is arranged inside the throttle body and is connected to the other end of the intake manifold; a fuel system component protection structure, located between the engine body and the intake manifold, and the fuel system component protection structure comprises a plate component and an exhaust gas recirculation gas channel located in the plate component, wherein the engine body and the intake manifold are respectively fixed to the plate component on the edge of the plate component with bolts; and a fuel pipe as a fuel system component, which is arranged along the length direction of the plate component of the fuel system component protection structure, the edge of the plate component is integrally formed along the fuel pipe, the throttle body and the fuel pipe are arranged oppositely in a manner of clamping the edge of the plate component, the throttle body is arranged on a side of the plate component close to the intake manifold, and the fuel pipe is arranged on a side of the plate component close to the engine body.

[0013] In an embodiment of the present invention, the plate member of the fuel system component protection structure is adjacent to the throttle body, and the shortest distance of the gap between the plate member and the throttle body is smaller than the shortest distance of the gap between the plate member and the fuel pipe.

[0014] In one embodiment of the present invention, the plate member of the fuel system component protection structure has a bolt boss portion and a weakened portion, the bolt boss portion is located at the end of the edge portion on the intake manifold side, and the weakened portion is adjacent to the bolt boss portion.

[0015] In an embodiment of the present invention, the weakened portion is a thin-walled portion.

[0016] In an embodiment of the present invention, the weakened portion is a groove portion.

[0017] Based on the above, in the fuel system component protection structure of the engine of the utility model, through the configuration of the plate member of the fuel system component protection structure, the fuel system component protection structure can simultaneously realize the channel function of the exhaust gas circulation and the collision protection function of the impact absorbing member for absorbing the impact load during the collision, and the exhaust gas recirculation device attached to the fuel system component protection structure of the engine can be used as the fuel system component protection structure without setting an additional member, thereby reducing the number of required parts. In addition, by making the end of the plate member of the fuel system component protection structure close to the throttle body approach and abut against the throttle body first, the other end of the plate member of the fuel system component protection structure provided with the bolt can be prevented from being abutted. In the case of no rotational displacement (generating torque), the plate member of the fuel system component protection structure can absorb the impact load during the vehicle collision, and at the same time can suppress the rotational displacement and suppress the interference with the fuel pipe, thereby ensuring the protection of the fuel pipe. In addition, by reducing the rigidity of the part near the other end of the plate member of the fuel system component protection structure and causing it to break first, the effect of reducing the rotational displacement and torque can be achieved, thereby reducing the possibility of damage to the bolt. Furthermore, since no fuel pipe is arranged behind the weakened portion having low rigidity, the possibility of damaging the fuel pipe can be avoided.

[0018] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of a fuel system component protection structure of an engine according to an embodiment of the utility model;

[0020] Figure 2 It is a side view schematic diagram of a fuel system component protection structure of an engine according to an embodiment of the utility model;

[0021] Figure 3A yes Figure 1 A schematic front view of a plate member of a fuel system component protection structure is shown;

[0022] Figure 3B yes Figure 3A A schematic cross-sectional view of a plate member of a fuel system component protection structure is shown along line AA.

[0023] Description of reference numerals:

[0024] 200: Engine

[0025] 210: Engine body

[0026] 220: Intake manifold

[0027] 230: Throttle body

[0028] 100: Fuel system component protection structure

[0029] 110: Plate member

[0030] 111: Bolt boss

[0031] 112: Weakened

[0032] 120: Exhaust gas recirculation gas channel

[0033] 240: Fuel pipe

[0034] A, B: distance

[0035] BT1, BT2: Bolts

[0036] FX1, FX2: Location. DETAILED DESCRIPTION

[0037] Figure 1 It is a three-dimensional schematic diagram of a fuel system component protection structure of an engine according to an embodiment of the utility model; Figure 2 It is a schematic diagram of a fuel system component protection structure of an engine according to an embodiment of the utility model; Figure 3A yes Figure 1 A schematic front view of a plate member of a fuel system component protection structure is shown; Figure 3B yes Figure 3A The cross-sectional view of the plate member of the fuel system component protection structure at line AA is shown in FIG. In this embodiment, the fuel system component protection structure 100 of the engine 200 refers to a part of the structure in the vehicle near the fuel system component. Figures 1 to 3B The specific structure of the fuel system component protection structure 100 of the engine 200 will be described.

[0038] Please refer to Figure 1 and Figure 2 In this embodiment, the engine 200 includes an engine body 210, an intake manifold 220, a throttle body 230, a fuel system component protection structure 100, and a fuel pipe 240 as a fuel system component. Specifically, Figure 1 and Figure 2As shown, in this embodiment, one end of the intake manifold 220 is connected to the engine body 210. A throttle valve is disposed inside the throttle body 230, and is connected to the other end of the intake manifold 220. The fuel system component protection structure 100 is located between the engine body 210 and the intake manifold 220, and the fuel system component protection structure 100 includes a plate member 110 and an exhaust gas recirculation gas passage 120 located in the plate member 110, wherein the engine body 210 and the intake manifold 220 are fixed to the plate member 110 at the edge of the plate member 110 by bolts BT1 and BT2, respectively. Figure 1 and Figure 2 As shown, in this embodiment, the bolt BT1 for fixing the plate member 110 and the engine body 210 is located at a position FX1 of the plate member 110 near the fuel pipe 240, and the bolt BT2 for fixing the plate member 110 and the intake manifold 220 is located at a position FX2 at the end of the plate member 110 near the intake manifold 220.

[0039] Furthermore, if Figure 1 and Figure 2 As shown, in this embodiment, the fuel pipe 240 is arranged along the length direction of the plate member 110 of the fuel system component protection structure 100. The edge of the plate member 110 is integrally formed along the fuel pipe 240 and has high rigidity. The throttle body 230 and the fuel pipe 240 are arranged opposite to each other in a manner of sandwiching the edge of the plate member 110. The throttle body 230 is arranged on the side of the plate member 110 close to the intake manifold 220, and the fuel pipe 240 is arranged on the side of the plate member 110 close to the engine body 210.

[0040] In this way, through the configuration of the plate component 110 and the exhaust gas recirculation gas channel 120 of the fuel system component protection structure 100, the fuel system component protection structure 100 can simultaneously realize the channel function of exhaust gas circulation and the collision protection function of serving as an impact absorbing component for absorbing impact loads during a collision. There is no need to set up additional components, so that the exhaust gas recirculation device attached to the fuel system component protection structure 100 of the engine 200 can serve as the fuel system component protection structure 100, thereby reducing the number of parts required.

[0041] In addition, if Figure 1 As shown, in this embodiment, the plate member 110 of the fuel system component protection structure 100 is adjacent to the throttle body 230, and the shortest distance of the gap between the plate member 110 and the throttle body 230 is smaller than the shortest distance of the gap between the plate member 110 and the fuel pipe 240. Figure 1As shown, in this embodiment, the shortest distance A of the gap between the plate member 110 and the throttle body 230 is also smaller than the shortest distance B in the vehicle height direction between the throttle body 230 and the bolt BT2 that fixes the plate member 110 and the intake manifold 220. In this way, when a collision occurs, the end of the plate member 110 of the fuel system component protection structure 100 close to the throttle body 230 is first close to and abuts against the throttle body 230, which can prevent the other end of the plate member 110 of the fuel system component protection structure 100, where the bolt BT2 is provided near the intake manifold 220, from being abutted. In the case of no rotational displacement (generating torque), the plate member 110 of the fuel system component protection structure 100 can absorb the impact load during a vehicle collision, and at the same time can suppress the rotational displacement and suppress the interference with the fuel pipe 240, thereby ensuring the protection of the fuel pipe 240.

[0042] On the other hand, Figure 3A and Figure 3B As shown, in this embodiment, the plate member 110 of the fuel system component protection structure 100 has a bolt boss portion 111 and a weakened portion 112. The bolt boss portion 111 is located at the end portion FX2 of the edge of the plate member 110 on the intake manifold 220 side, and the weakened portion 112 is adjacent to the bolt boss portion 111. In this way, by setting the weakened portion 112, the rigidity of the adjacent area of ​​the end portion FX2 of the plate member 110 of the fuel system component protection structure 100 near the intake manifold 220 can be reduced and caused to break first, which can be used to absorb the impact load, so that the bolt BT2 can remain, and the effect of reducing rotation displacement and torque can also be achieved, thereby reducing the possibility of damage to the bolts BT1 and BT2. In addition, the fuel pipe 240 is not arranged behind the weakened portion 112 with low rigidity, so that the possibility of damage to the fuel pipe 240 can be avoided. For example, in this embodiment, the weakened portion 112 can be a thin-walled portion, but the utility model is not limited thereto. In another embodiment, the weakened portion 112 may be a groove portion. Thus, the weakened portion 112 has a simple structure and can be easily formed, so that the plate member 110 can be simply formed into a member of an integrally formed plate.

[0043] After the actual vehicle collision test, the bolts BT1 and BT2 connecting the plate member 110 of the fuel system component protection structure 100 and the engine body 210 can be prevented from breaking due to the torque, and the fuel pipe 240 can be protected without damaging the portion FX1 of the plate member 110 of the fuel system component protection structure 100 corresponding to the fuel pipe 240. In addition, when confirming the load capacity of the fuel system component protection structure 100 in a single collision test, by causing the plate member 110 of the fuel system component protection structure 100 with low rigidity to break first at the other end near the intake manifold 220, the effect of reducing the rotation torque can be achieved, and thus the bolt BT1 connecting the plate member 110 of the fuel system component protection structure 100 and the engine body 210 can be further prevented from breaking. In addition, since the fuel system component protection structure 100 located at the rear of the throttle body 230 has high rigidity, the impact load that can cause the fuel system component protection structure 100 at the rear of the throttle body 230 to break is much larger than the input impact load during a collision, thereby ensuring the integrity of the fuel system component protection structure 100 and its collision protection function as a shock absorbing component for absorbing impact loads during a collision, thereby ensuring the protection of the fuel pipe 240.

[0044] In summary, in the fuel system component protection structure of the engine of the utility model, through the configuration of the plate member of the fuel system component protection structure, the fuel system component protection structure can simultaneously realize the channel function of the exhaust gas circulation and the collision protection function of the impact absorbing member for absorbing the impact load during the collision, and the exhaust gas recirculation device attached to the fuel system component protection structure of the engine can be used as the fuel system component protection structure without setting up additional components, thereby reducing the number of required parts. In addition, the plate member of the fuel system component protection structure is made to approach and abut the throttle body at one end thereof, so that the other end of the plate member of the fuel system component protection structure where the bolt is arranged near the intake manifold can be prevented from being abutted. In the case of no rotational displacement (generating torque), the plate member of the fuel system component protection structure can absorb the impact load during the vehicle collision, and at the same time can suppress the rotational displacement and suppress the interference with the fuel pipe, thereby ensuring the protection of the fuel pipe. In addition, by reducing the rigidity of the plate member of the fuel system component protection structure near the other end near the intake manifold and causing it to break first, the effect of reducing rotational displacement and torque can be achieved, thereby reducing the possibility of bolt damage. In addition, since the fuel pipe is not arranged behind the weakened portion with low rigidity, the possibility of damaging the fuel pipe can be avoided.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A fuel system component protection structure for an engine, characterized in that: The engine comprises: Engine body; An intake manifold, one end of which is connected to the engine body; A throttle body, wherein a throttle valve is disposed inside the throttle body and is connected to the other end of the intake manifold; The fuel system component protection structure is located between the engine body and the intake manifold, and the fuel system component protection structure includes a plate member and an exhaust gas recirculation gas passage located in the plate member, wherein the engine body and the intake manifold are respectively fixed to the plate member at the edge of the plate member by bolts; and A fuel pipe as a fuel system component is arranged along the length direction of the plate member of the fuel system component protection structure, The edge of the plate member is integrally formed along the fuel pipe, The throttle body and the fuel pipe are arranged opposite to each other in a manner of sandwiching the edge of the plate member. The throttle body is arranged on a side of the plate member close to the intake manifold, and the fuel pipe is arranged on a side of the plate member close to the engine body.

2. The fuel system component protection structure of the engine according to claim 1, characterized in that: The plate member of the fuel system component protection structure is adjacent to the throttle body, and the shortest distance of a gap between the plate member and the throttle body is smaller than the shortest distance of a gap between the plate member and the fuel pipe.

3. The fuel system component protection structure of the engine according to claim 2, characterized in that: The plate member of the fuel system component protection structure has a bolt boss portion and a weakened portion. The bolt boss portion is located at an end portion of the rim portion on the intake manifold side, and the weakened portion is adjacent to the bolt boss portion.

4. The fuel system component protection structure of the engine according to claim 3, characterized in that: The weakened portion is a thin-walled portion.

5. The fuel system component protection structure of the engine according to claim 3, characterized in that: The weakened portion is a groove portion.

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