Auxiliary machine mounting structure for internal combustion engine

Abstract

An auxiliary machine mounting structure of an internal combustion engine fixes an auxiliary machine that transmits power between internal combustion engines to the internal combustion engine by a bracket. A housing that covers a ring-shaped transmission member that transmits rotation of a crankshaft to a camshaft is provided at an end portion of the internal combustion engine. The bracket has a bracket fixing portion that fixes the bracket to the internal combustion engine. The bracket fixing portion has a fixing portion to the housing and a fixing portion to a cylinder block of the internal combustion engine. The bracket is fixed across the housing and the cylinder block.

Description

Technical Field

[0001] This disclosure relates to an auxiliary machine mounting structure for an internal combustion engine. Background Technology

[0002] Various auxiliary machines are installed on internal combustion engines (engines), transmitting power to auxiliary machines such as generators or water pumps via belts or chains. Additionally, an auxiliary machine is known that uses a BSG (belt-driven starter-generator) to start the engine or assist in the engine's driving force.

[0003] Various solutions have been proposed for the mounting structure of these auxiliary machines on the engine. For example, Patent Document 1 shows an auxiliary machine mounting structure that is mounted on an internal combustion engine via a bracket, and shows a structure in which the housing of a water pump mounted on the side wall of the internal combustion engine body also serves as a bracket supporting the ACG (generator) as an auxiliary machine. Furthermore, it shows bolt holes formed in this housing bracket for bolts that will be inserted to fix the housing bracket to the internal combustion engine body, and reinforcing ribs forming a roughly X-shape in order to connect to these bolt holes (see Patent Document 1). Figure 1 , Figure 4 (a)).

[0004] Furthermore, Patent Document 2 shows a structure that supports an alternator, which is an auxiliary machine that transmits power from the engine body via a belt. It also shows a chain cover that supports the alternator and covers the timing chain, provided that multiple mounting portions protrude from the alternator's main body. Additionally, it is shown that the alternator can support the engine body.

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2015-151863

[0007] Patent Document 2: Japanese Patent Application Publication No. 2018-66301 Summary of the Invention

[0008] The technical problem that the invention aims to solve

[0009] As described above, Patent Document 1 shows a structure in which the housing of a water pump mounted on the side wall of the internal combustion engine body also serves as a support for an auxiliary ACG (generator). Furthermore, Patent Document 2 shows a chain cover supported by multiple mounting parts for the auxiliary alternator, and also shows a structure that can support the engine body.

[0010] However, neither Patent Document 1 nor Patent Document 2 shows a bracket that secures the auxiliary machine to the internal combustion engine by passing over the chain cover and cylinder block of the internal combustion engine.

[0011] On the other hand, driving force from the engine is applied to auxiliary equipment such as generators and water pumps. Furthermore, for auxiliary equipment like BSGs, even greater force is applied because the vehicle is driven by the driving force of the BSG used to start or assist the engine. Therefore, the auxiliary equipment needs to be securely fixed to the engine mount with sufficient strength.

[0012] Therefore, in view of the above-mentioned issues, an object of at least one embodiment of the present invention is to provide an auxiliary engine mounting structure for an internal combustion engine, which can fix a bracket across the housing and cylinder block covering the annular transmission component of the internal combustion engine, and securely fix the auxiliary engine and the bracket to the engine, wherein the bracket is used to fix the auxiliary engine to the internal combustion engine.

[0013] (1) In order to achieve the above objective, at least one embodiment of the present invention is an auxiliary machine mounting structure for an internal combustion engine, wherein an auxiliary machine for transmitting power between internal combustion engines is fixed to the internal combustion engine by a bracket, characterized in that a housing covering an annular transmission member for transmitting the rotation of the crankshaft to the camshaft is provided at the end of the internal combustion engine, the bracket having a bracket fixing part for fixing the bracket to the internal combustion engine, the bracket fixing part having a fixing part to the housing and a fixing part to the cylinder block of the internal combustion engine, the bracket being fixed across the housing and the cylinder block.

[0014] With this structure, the bracket is provided with bracket fixing parts that fix the bracket to the housing and cylinder block respectively. Since the bracket is fixed across the housing and cylinder block, the load applied to the auxiliary machine is distributed to the housing side and the cylinder block side through the bracket. As a result, the auxiliary machine and the bracket can be firmly fixed to the internal combustion engine (engine).

[0015] Furthermore, since the bracket spans and is fixed between the housing and the cylinder, it strengthens the connection between the housing and the cylinder, increasing the rigidity of the connection. This, in turn, helps prevent oil leakage between the housing and the cylinder. Additionally, it suppresses noise and vibration.

[0016] (2) In several embodiments, the bracket has an auxiliary machine mounting portion for mounting the auxiliary machine on the bracket, the auxiliary machine mounting portion being located on the housing side and the cylinder side respectively.

[0017] With this structure, since the auxiliary machine mounting part, which mounts the auxiliary machine on the bracket, is located on both the housing side and the cylinder side, the mounting of the auxiliary machine relative to the bracket can be stabilized.

[0018] (3) In several embodiments, the bracket is provided with reinforcing ribs to connect multiple auxiliary machine mounting parts, and the reinforcing ribs are configured to span across the housing side and the cylinder side.

[0019] With this structure, the strength of the bracket can be ensured by the inclusion of reinforcing ribs to connect the parts that experience greater forces during auxiliary machine operation (auxiliary machine mounting section). Furthermore, since the reinforcing ribs are positioned to span both the housing side and the cylinder side, the joint rigidity between the housing and the cylinder can be improved.

[0020] (4) In several embodiments, the reinforcing rib is formed to extend in an X-shape with the bracket fixing part as the intersection point.

[0021] With this structure, by arranging the bracket fixing part at the intersection (center) of the reinforcing ribs, the bracket is stably fixed to the internal combustion engine, and the strength of the bracket is ensured. Furthermore, since the reinforcing ribs extend from the bracket fixing part, displacement of the housing relative to the cylinder block can be suppressed.

[0022] (5) In several embodiments, the bolt fixing direction of at least one of the plurality of bracket fixing parts relative to the internal combustion engine is configured to be different from the bolt fixing direction of the other parts.

[0023] Based on this structure, the bracket is stable not only for load input from a specific direction, but also for input from different directions.

[0024] (6) In several embodiments, the auxiliary machine mounting part for mounting the auxiliary machine to the bracket is positioned between the bracket fixing parts having two different bolt fixing directions when viewed from the front of the bracket.

[0025] With this structure, since the auxiliary machine mounting part is positioned between two bracket fixing parts with opposite bolt fixing directions, vibration of the auxiliary machine can be suppressed even when a large force is applied to the auxiliary machine mounting part during operation. Furthermore, by clamping the auxiliary machine mounting part between bracket fixing parts fixed from opposite directions, the installation of the auxiliary machine mounting part is more stable.

[0026] (7) In several embodiments, a fuel supply pipe for supplying fuel to the internal combustion engine is disposed between the bracket and the cylinder block.

[0027] According to this structure, in the event of a vehicle collision, the delivery pipe is protected by a bracket and an auxiliary machine mounted on the bracket.

[0028] Invention Effects

[0029] According to at least one embodiment of the present invention, the auxiliary machine and the bracket can be securely fixed to the engine by means of a bracket that fixes the auxiliary machine to the internal combustion engine by means of a housing and cylinder block that spans the annular transmission member covering the internal combustion engine. Attached Figure Description

[0030] Figure 1 This is a schematic side view of an engine in the state of having a bracket installed in the auxiliary engine mounting structure of an internal combustion engine according to an embodiment of the present invention.

[0031] Figure 2 This is a schematic front view of the engine showing the tension of the belt driving the auxiliary machine.

[0032] Figure 3 It is a magnified 3D view of the main part from the front of the engine, showing the installation status of the bracket.

[0033] Figure 4 It is a magnified 3D view of the main part from the rear of the engine, showing the installation status of the bracket.

[0034] Figure 5 This is a magnified perspective view of the main part from the front of the engine, showing the BSG mounted on the bracket.

[0035] Figure 6 This is a schematic side view of the engine showing the overlap of the delivery pipe with the support and BSG.

[0036] [Symbol Explanation]

[0037] 1. Engine (internal combustion engine)

[0038] 3 Engine body

[0039] 5 Crankshaft

[0040] 7-cylinder block

[0041] 9 Cylinder head

[0042] 10. Intake Manifold

[0043] 11. Chain box (shell)

[0044] 13 Oil pan

[0045] 14, 47, 49, 55 fixing bolts

[0046] 15. Timing chain (ring drive component)

[0047] 17 Crankshaft sprocket

[0048] 19 Crankshaft Pulley

[0049] 21 Auxiliary machines

[0050] 23 Auxiliary machine belts

[0051] 25 BSG (Belt-driven starter generator)

[0052] 27 Engine cooling water pump

[0053] 29 A / C (Air Conditioner Compressor)

[0054] 41 Bracket

[0055] 57 screw hole

[0056] 59, 61 Reinforcing ribs

[0057] 63 Delivery pipe

[0058] 65 Fuel Pressure Sensor

[0059] P bracket fixing part

[0060] P1 First fixed point

[0061] P2 Second fixed point

[0062] P3 Third fixed point

[0063] P4 Fourth fixed point

[0064] P5 Fifth Fixed Point

[0065] Q Auxiliary Equipment Installation Department

[0066] Q1 First installation point

[0067] Q2 Second Installation Point

[0068] Q3 Third Installation Point

[0069] Q4 Fourth Installation Point

[0070] AA boundary line

[0071] H section line Detailed Implementation

[0072] Hereinafter, embodiments of the present invention will be described in detail based on the accompanying drawings. However, the relative arrangements of the components described in the embodiments or shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative examples. It should be noted that the directions of up, down, front, back, left, and right in the description are defined by the direction the driver is looking forward from the driver's seat. In the figures, "FR" represents forward, "RH" represents right, and "UPR" represents upward.

[0073] Figure 1 This is a schematic side view of an engine 1, showing the auxiliary mounting structure of an internal combustion engine 1 according to one embodiment of the present invention. Figure 1 In the middle, engine 1 is housed in the engine compartment at the front of the vehicle (not shown), and is supported on the frame by an engine mount.

[0074] In addition, engine 1 is, for example, an inline multi-cylinder gasoline engine, and the crankshaft 5 of engine body 3 is a transversely mounted engine that extends in the vehicle width direction. Figure 1 This indicates that the front of the engine block 3 is positioned on the right side of the vehicle. Additionally, Figure 1 This is a side view of the engine 1 from the front of the vehicle.

[0075] The engine body 3 has a cylinder block 7 and a cylinder head 9 on top of the cylinder block 7. A chain box (housing) 11 is attached to the front side of the engine body 3, and an oil pan 13 is provided on the lower side of the engine body 3.

[0076] The chain box 11 is fixed to the front of the cylinder blocks 7 and cylinder heads 9 by multiple fixing bolts 14 to cover the front sides of the cylinder blocks 7 and cylinder heads 9. In addition, an intake manifold 10 is provided on the cylinder head 9.

[0077] A chain box chamber is formed inside the chain box 11, and a timing chain 15, which serves as a ring transmission member, is arranged in the chain box chamber. The timing chain 15 transmits the rotation of the crankshaft 5, which is located in the cylinder block 7, to a camshaft (not shown) located in the cylinder head 9.

[0078] The timing chain 15 is wound around a camshaft sprocket and a crankshaft sprocket 17. The camshaft sprocket engages with the front ends of the camshafts (not shown) on the intake and exhaust sides, and the crankshaft sprocket 17 engages with the front end of the crankshaft 5. Accordingly, in conjunction with the rotation of the crankshaft 5, the timing chain 15 moves, and the rotation is transmitted to the camshaft sprocket, causing the camshaft to rotate.

[0079] A crankshaft pulley 19 protrudes from the front face of the chain box 11 on the further front end side of the crankshaft sprocket 17. The crankshaft pulley 19 is wound with an auxiliary machine belt 23, which transmits driving force to the auxiliary machine 21 or from the auxiliary machine 21 to the engine 1.

[0080] As an auxiliary machine 21, for example, such as Figure 2 As shown, the BSG (belt-driven starter-generator) 25, the engine coolant pump 27, and the A / C (air conditioning compressor) 29 are connected to the crankshaft pulley 19 via the auxiliary machine belt 23.

[0081] The auxiliary belt 23 can be kept constant tension by oscillating around the same axis of rotation as the BSG pulley 31 and having tensioning wheels 33a and 33b that rotate freely on the upstream and downstream sides of the BSG pulley 31 in the direction of rotation.

[0082] In addition, idler pulleys 37 and 39 are provided between the water pump 27 and the BSG pulley 31, and between the A / C29 and the crankshaft pulley 19 to ensure the winding angle of the auxiliary belt 23.

[0083] When the engine is started, BSG25 functions as a starter motor to start engine 1. While the engine is running, the driving force of engine 1 drives water pump 27 and A / C29, and simultaneously drives BSG25 to generate electricity. In addition, by driving BSG25 while the engine is running, torque assistance is provided during vehicle acceleration.

[0084] Next, the bracket 41 that secures the BSG25, which serves as an auxiliary machine, to the side wall of the engine 1 will be described. The bracket 41, as... Figure 1 , Figure 3 As shown, it consists of a metal component; additionally, as... Figure 4 As shown, it has a curved portion 43, which bends towards the outer opening of the engine 1 when viewed in the front-rear direction to embrace the main body of the generally cylindrical BSG25. It should be noted that... Figure 4 This indicates the state of the BSG25 before it is installed in bracket 41. Figure 5 This indicates that the BSG25 is installed in bracket 41.

[0085] In addition, such as Figure 1 , Figure 3 As shown, the bracket 41 has a bracket fixing part P, which fixes the bracket 41 to the chain box 11 and the cylinder body 7 respectively, spanning and fixing them. It should be noted that the bracket fixing part P includes the first to fifth fixing points P1 to P5, which will be described later.

[0086] As a fixing part of the bracket fixing part P to the cylinder body 7, four positions are provided for fixing to the side wall of the cylinder body 7: a first fixing point P1, a second fixing point P2, a third fixing point P3, and a fourth fixing point P4. As a fixing part of the bracket fixing part P to the chain box 11, a fifth fixing point P5 is provided for fixing to the side wall of the chain box 11.

[0087] Thus, a bracket fixing part P is provided on the bracket 41, which has fixing parts that fix the bracket 41 to the chain box 11 and the cylinder block 7 respectively. Since the bracket 41 is fixed across the chain box 11 and the cylinder block 7, the load applied to the BSG25 as an auxiliary machine is distributed on the chain box 11 side and the cylinder block 7 side through the bracket 41. As a result, the BSG25 and the bracket 41 can be firmly fixed to the engine 1.

[0088] In the case of an auxiliary machine like BSG25, the engine 1 is started. Furthermore, to assist the driving force of the engine 1 in moving the vehicle, a greater force is applied to the bracket 41 compared to the auxiliary machines of water pump 27 and A / C29. Therefore, the bracket 41 supporting BSG25 needs to be of robust strength. Thus, the bracket 41 of the present invention is suitable for securing BSG25.

[0089] Furthermore, because the bracket 41 is fixed across the chain box 11 and the cylinder body 7, it strengthens the connection between the chain box 11 and the cylinder body 7, thereby improving the rigidity of the connection. This helps to prevent oil leakage between the chain box 11 and the cylinder body 7. Additionally, it helps to suppress the generation of noise and vibration.

[0090] like Figure 1 , Figure 3 As shown, the bracket 41 has four fixing points: a first fixing point P1, a second fixing point P2, a third fixing point P3, and a fourth fixing point P4, fixed to the side wall of the cylinder block 7, and one fixing point P5, fixed to the side wall of the chain box 11. Furthermore, in the front view of the bracket 41 (a side view of the engine 1 with the bracket 41 fixed to the engine 1), the positions of the first to fifth fixing points P1 to P5 are respectively located on the periphery of the bracket 41.

[0091] Thus, in the front view of the bracket 41, since each fixing point is located at the periphery of the bracket 41, that is, since it is positioned to fix the end of the bracket 41, the bracket 41 is stably fixed to the engine 1.

[0092] In addition, such as Figure 1 , Figure 3 As shown, at the first fixing point P1, the second fixing point P2, the third fixing point P3, and the fifth fixing point P5, fixing bolts 47 are used to fix the vehicle from the front side (from the side of the engine 1), respectively. At the fourth fixing point P4, fixing bolts 49 are used to fix the vehicle from the right side (from the front of the engine 1).

[0093] The fourth fixing point P4 is provided with a protrusion 51. The side wall of the cylinder 7 of the protrusion 51 protrudes outward and has a through hole through which the fixing bolt 49 passes. One arm 53a and another arm 53b are provided on the bracket 41 to clamp the protrusion 51 from both sides.

[0094] Furthermore, the fixing bolt 49 is inserted through the side of one arm 53a, passing through the interior of the protrusion 51, and threadedly connected to the nut portion provided on the side of the other arm 53b. Thus, at the fourth fixing point P4, the bracket 41 is fixed to the cylinder block 7 from the right side of the vehicle (from the front side of the engine 1) by the fixing bolt 49.

[0095] Thus, since the fixing direction of the fixing bolt 49 that fixes the bracket 41 to the engine 1 is different from the fixing direction of the fixing bolt 47 in other parts, the fixing of the bracket 41 is stable not only for load input from a specific direction, but also for input from different directions.

[0096] Next, the auxiliary mounting section Q, on which the BSG25, as an auxiliary machine, is mounted on the bracket 41, will be described. It should be noted that the auxiliary mounting section Q includes the first to fourth mounting points Q1 to Q4, which will be described later.

[0097] like Figure 1 , Figure 3 As shown, the auxiliary machine mounting section Q has four locations: a first mounting point Q1, a second mounting point Q2, a third mounting point Q3, and a fourth mounting point Q4. Threaded holes 57 are formed at each mounting point Q1, Q2, Q3, and Q4 of the auxiliary machine mounting section Q, and these threaded holes 57 are threadedly connected to the fixing bolts 55 used to mount the BSG25.

[0098] like Figure 3 , Figure 4 As shown, the auxiliary mounting part Q is located at the open end of the curved shape part 43 of the bracket 41, and is located at the top and bottom of the bracket 41 respectively. The first mounting point Q1 and the second mounting point Q2 are located on the upper side, and the third mounting point Q3 and the fourth mounting point Q4 are located on the lower side.

[0099] In addition, the auxiliary machine mounting part Q is located on the left and right sides of the upper and lower positions. These two locations are respectively situated on one side of the chain box 11 and one side of the cylinder body 7. Figure 1 In the middle, one side of the chain box 11 and one side of the cylinder body 7 are separated by the boundary line AA. The first mounting point Q1 and the third mounting point Q3 are located on one side of the chain box 11, and the second mounting point Q2 and the fourth mounting point Q4 are located on one side of the cylinder body 7.

[0100] In this way, the auxiliary machine mounting part Q is set to be located in the upper and lower positions respectively. Furthermore, by setting it on the left and right sides of the chain box 11 and the cylinder body 7, the installation of BSG25 relative to the bracket 41 can be stabilized.

[0101] In addition, such as Figure 1 , Figure 3 As shown, a reinforcing rib 59 is provided on the bracket 41 to connect the first mounting point Q1 and the fourth mounting point Q4, and a reinforcing rib 61 is provided to connect the second mounting point Q2 and the third mounting point Q3. Furthermore, these reinforcing ribs 59 and 61 are configured to span across one side of the chain box 11 and one side of the cylinder body 7.

[0102] Thus, since the reinforcing ribs 59 and 61 are positioned to connect the parts subjected to greater forces (auxiliary mounting part Q) during BSG25 operation, the strength of the bracket 41 can be ensured. Furthermore, since the reinforcing ribs 59 and 61 are positioned to span across one side of the chain box 11 and one side of the cylinder body 7, the joint rigidity between the chain box 11 and the cylinder body 7 can be effectively improved. That is, the bracket 41 reinforced by the reinforcing ribs 59 and 61 further improves the joint strength between the chain box 11 and the cylinder body 7, thereby effectively improving the joint rigidity.

[0103] In addition, such as Figure 1 , Figure 3 As shown, the reinforcing ribs 59 and 61 are formed to extend in an X-shape with the second fixing point P2 inside the bracket fixing part P as the intersection point.

[0104] Thus, by arranging the second fixing point P2 of the bracket fixing part P at the intersection (center) of the reinforcing ribs 59 and 61, the bracket 41 is stably fixed to the engine 1 (cylinder block 7 and chain box 11), while ensuring the strength of the bracket 41. In addition, since the reinforcing ribs 59 and 61 extend from the second fixing point P2 of the bracket fixing part P, the connection rigidity of the chain box 11 relative to the cylinder block 7 can be improved.

[0105] In addition, such as Figure 1 , Figure 3 As shown, in the front view of the bracket 41, the auxiliary machine mounting part Q is positioned between the bracket fixing part P, which is clamped between two parts having different fixing directions of fixing bolts 47 and 49.

[0106] That is, the third mounting point Q3 of the auxiliary machine mounting part Q is located between the second fixing point P2 and the fourth fixing point P4 of the bracket fixing part P in the vertical direction, and the fourth mounting point Q4 of the auxiliary machine mounting part Q is located between the third fixing point P3 and the fourth fixing point P4 of the bracket fixing part P in the vertical direction.

[0107] Thus, since the third mounting point Q3 of the auxiliary machine mounting part Q is located between the second fixing point P2 and the fourth fixing point P4 of the bracket fixing part P, which are clamped between two parts with different bolt fixing directions, and the fourth mounting point Q4 of the auxiliary machine mounting part Q is located between the third fixing point P3 and the fourth fixing point P4 of the bracket fixing part P, which are clamped between two parts with different bolt fixing directions, the vibration of the BSG25 can be suppressed even when a large force is applied to the third mounting point Q3 and the fourth mounting point Q4 of the auxiliary machine mounting part Q during operation.

[0108] In addition, the third mounting point Q3 and the fourth mounting point Q4 are clamped between the bracket fixing parts fixed in different directions, making the installation of BSG25 at the third mounting point Q3 and the fourth mounting point Q4 more stable.

[0109] Furthermore, when the BSG25 is in operation, since the mounting point at the bottom is easier to apply greater force compared to the top, the auxiliary mounting part Q, which is clamped between the bracket fixing part P with two parts having different bolt fixing directions, can effectively suppress the vibration of the BSG25 by using the bottom of the BSG25 as the third mounting point Q3 and the fourth mounting point Q4 for mounting on the bracket 41.

[0110] It should be noted that the bracket fixing part P with two parts having different bolt fixing directions can be configured to clamp the auxiliary machine mounting part Q in the middle, or it can be configured to clamp the first mounting point Q1 and the second mounting point Q2 in the middle. Alternatively, the upper part of BSG25 can be configured relative to the first mounting point Q1 and the second mounting point Q2 of the auxiliary machine mounting part Q for mounting on the bracket 41, and the lower part of BSG25 can be configured relative to the third mounting point Q3 and the fourth mounting point Q4 of the auxiliary machine mounting part Q for mounting on the bracket 41.

[0111] like Figure 1 , Figure 4 , Figure 6 As shown, a fuel supply pipe 63 for supplying fuel to the engine 1 is disposed between the bracket 41 and the cylinder block 7. That is, one end of the fuel supply pipe 63 for supplying fuel to an in-cylinder fuel injection valve (not shown) is located between the bracket 41 and the cylinder block 7. In addition, a fuel pressure sensor 65 is provided on the fuel supply pipe 63.

[0112] Figure 6 Is Figure 1 The schematic side view of the engine shows the state in which the BSG25 is installed. Except for the double-dotted lines indicating the BSG25 and the BSG pulley 31, it is similar to... Figure 1 The structures shown are the same.

[0113] When BSG25 is installed in bracket 41, as Figure 6 As shown in the cross-sectional section H, one end of the delivery pipe 63 is positioned between the bracket 41, the BSG25, and the cylinder 7, and the other end of the delivery pipe 63 is covered by the bracket 41 and the BSG25.

[0114] It should be noted that delivery pipe 63 represents an example of a delivery pipe that supplies fuel to the in-cylinder fuel injection valve, but it can also be a delivery pipe that supplies fuel to the intake passage fuel injection valve.

[0115] Thus, since a fuel supply pipe 63 for supplying fuel to the engine 1 is arranged between the bracket 41 and the cylinder block 7, when the BSG 25 is mounted on the bracket 41, one end of the supply pipe 63 is covered by the bracket 41 and the BSG 25. Therefore, in the event of a vehicle collision, the supply pipe 63 can be protected by the bracket 41 and the BSG 25 mounted on the bracket 41.

[0116] In the above embodiment, an example is shown where the annular drive component is a timing chain 15, but it can also be a timing belt.

[0117] This application is based on Japanese Patent Application No. 2020-144217, filed on August 28, 2020, the contents of which are incorporated herein by reference.

[0118] Industrial availability

[0119] According to at least one embodiment of the present invention, by fixing the BSG25, which is an auxiliary machine, to the engine 1 by passing the chain box 11 and the cylinder block 7 of the engine 1, the BSG25 and the bracket 41 can be firmly fixed to the engine 1, which is suitable for use in engine auxiliary machine mounting structures.

Claims

1. An auxiliary machine mounting structure for an internal combustion engine, wherein an auxiliary machine for transmitting power between internal combustion engines is fixed to the internal combustion engine via a bracket, characterized in that, A housing is provided at the end of the internal combustion engine to cover the annular transmission component that transmits the rotation of the crankshaft to the camshaft. The bracket has a bracket fixing part for fixing the bracket to the internal combustion engine. The bracket fixing part has a fixing part to the housing and a fixing part to the cylinder block of the internal combustion engine. The bracket has multiple auxiliary machine mounting portions for mounting the auxiliary machine on the bracket, wherein the multiple auxiliary machine mounting portions are threadedly connected to fixing bolts for mounting the auxiliary machine. The bracket is fixed across the housing and the cylinder. The bracket is provided with reinforcing ribs that span across the housing and the cylinder. The auxiliary machine mounting section is located on each side of the housing and the cylinder. The reinforcing ribs are configured to connect multiple auxiliary machine mounting parts.

2. The auxiliary engine mounting structure for an internal combustion engine according to claim 1, characterized in that, The reinforcing ribs are formed by extending in an X-shape with the fixing part of the bracket as the intersection point.

3. The auxiliary engine mounting structure for an internal combustion engine according to any one of claims 1 to 2, characterized in that, The bolt fixing direction of at least one of the plurality of bracket fixing parts relative to the internal combustion engine is different from the bolt fixing direction of the other parts.

4. The auxiliary engine mounting structure for an internal combustion engine according to claim 3, characterized in that, The auxiliary machine mounting part, which mounts the auxiliary machine on the bracket, is positioned between the bracket fixing parts, which have two parts with different bolt fixing directions, when viewed from the front of the bracket.

5. The auxiliary engine mounting structure for an internal combustion engine according to any one of claims 1 to 2, characterized in that, A fuel supply pipe for supplying fuel to the internal combustion engine is disposed between the bracket and the cylinder block.

Images