JP2015200203A - Accessory fitting structure of vehicle internal combustion engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an accessory fitting structure of a vehicle internal combustion engine capable of preventing the exposure of an EGR valve to a liquid using an air cleaner while preventing degradation in the durability of the air cleaner, and preventing degradation in the reliability of the EGR valve.SOLUTION: In an accessory fitting structure, an EGR valve 19 and an EGR cooler 20 are installed to be lined up in a front-rear direction of a vehicle 1, the EGR cooler 20 is fitted to one end portion 6a of an engine 6 in a width direction of the vehicle 1, an air cleaner 10 is fitted to the EGR valve 19 and the EGR cooler 20 via brackets 35 and 36, respectively above a transmission, the EGR valve 19 is installed between the transmission and the air cleaner 10 in a vertical direction of the vehicle 1, and the air cleaner 10 screens water dropping from above an engine room and the transmission screens water flying from below the engine room.

Description

  The present invention relates to an auxiliary machine mounting structure for a vehicle internal combustion engine, and more particularly to an auxiliary machine mounting structure for a vehicle internal combustion engine in which an auxiliary machine including an EGR valve and an EGR cooler is mounted on the internal combustion engine.

  In general, an internal combustion engine of a vehicle such as an automobile is provided with auxiliary equipment such as an exhaust gas recirculation (EGR) device. This exhaust gas recirculation device guides a part of the exhaust after combustion discharged from the combustion chamber of the internal combustion engine to the exhaust passage to the intake pipe via the EGR pipe, and mixes it with the intake air flowing through the intake pipe into the combustion chamber. It is designed to reflux.

  The flow rate of the exhaust gas flowing through the EGR pipe is adjusted by an EGR valve provided in the EGR pipe. This exhaust gas recirculation device can mainly reduce nitrogen oxide (NOx) in the exhaust gas, and can improve fuel efficiency when the internal combustion engine is partially loaded.

  As a conventional EGR valve of this type, a valve provided at the front part of an internal combustion engine is known (for example, see Patent Document 1). In addition, an air cleaner is attached to an end portion of the internal combustion engine in the vehicle width direction via a bracket, and the air cleaner and the EGR valve are provided separately in the vehicle width direction.

JP 2003-74432 A

  However, in such a conventional EGR valve, since there is no on-vehicle component that blocks the EGR valve above, a liquid such as water that has entered the engine room (for example, a soot adhering to the back of the engine hood, There is a risk that water generated during car washing, rainwater flowing into the engine room during traveling, etc. will fall into the EGR valve and enter the EGR valve. For this reason, the valve body and the like inside the EGR valve may be deteriorated or corroded, and the reliability of the EGR valve may be reduced.

  Further, since a relatively large air cleaner is connected to the internal combustion engine via the bracket, it is necessary to increase the size of the bracket. For this reason, the air cleaner vibrates with the vibration of the internal combustion engine, and the durability of the air cleaner may be deteriorated.

  The present invention has been made paying attention to the above problems, and prevents the EGR valve from being exposed to liquid using the air cleaner while preventing the durability of the air cleaner from deteriorating. An object of the present invention is to provide an auxiliary machine mounting structure for an internal combustion engine for a vehicle that can prevent the reliability of an EGR valve from being lowered.

  According to a first aspect of the present invention, there is provided an exhaust gas recirculation device including an EGR pipe that recirculates a part of exhaust gas from an exhaust system member to an intake system member and an auxiliary device for exhaust gas recirculation, and an intake system member And an air cleaner for purifying the air, and an auxiliary machine mounting structure for a vehicle internal combustion engine in which a transmission is installed at an end in the vehicle width direction. The auxiliary machine controls the flow rate of exhaust gas flowing through the EGR pipe. The EGR valve body is configured to include an EGR valve to be adjusted and an EGR cooler to cool the exhaust gas flowing through the EGR pipe, and the EGR valve has a valve body for adjusting the opening degree of the EGR pipe, and is attached to the EGR valve body. The EGR valve and the EGR cooler are arranged side by side in the front-rear direction of the vehicle, and at least of the EGR valve and the EGR cooler. Is attached to the end of the internal combustion engine in the vehicle width direction, and an air cleaner is attached to the EGR valve and the EGR cooler via a bracket above the transmission. It is comprised from what was installed between.

  As a second aspect of the present invention, the bracket is composed of the first bracket and the second bracket, the first front side fastening portion is formed at the front end portion in the front-rear direction of the vehicle of the EGR valve, and the vehicle of the air cleaner A second front fastening portion is formed at the front end in the front-rear direction, a first rear fastening portion is formed at the rear end in the front-rear direction of the vehicle of the EGR cooler, and a rear end of the air cleaner in the front-rear direction of the vehicle A second rear fastening part is formed, the first front fastening part and the second front fastening part are connected via the first bracket, and the first rear fastening part and the second rear fastening part. May be connected via the second bracket.

  As a third aspect of the present invention, the EGR cooler is provided in the EGR cooler body and the EGR cooler body, and has an exhaust gas inlet pipe portion through which exhaust gas is introduced from the EGR valve. The valve is installed closer to the lower part of the air cleaner than the transmission, the axis of the exhaust gas inlet pipe is inclined outward in the vehicle width direction with respect to the axis of the EGR cooler body, and the axis of the EGR valve is the exhaust gas inlet pipe The EGR valve may be extended under the air cleaner so as to be orthogonal to the axis of the air cleaner, and the drive actuator may be installed on the opposite side of the EGR valve body from the internal combustion engine.

  As a fourth aspect of the present invention, the EGR valve main body protrudes forward from the EGR valve main body in the front-rear direction of the vehicle, has a boss portion constituting the first front side fastening portion, and the EGR cooler is connected to the EGR pipe. And may have a flange portion constituting the first rear side fastening portion.

  As a fifth aspect of the present invention, the EGR valve may be inclined upward from the EGR valve main body toward the drive actuator in a state where the EGR valve attached to the internal combustion engine is viewed from the horizontal direction.

  As a sixth aspect of the present invention, the second front fastening portion of the air cleaner protrudes downward from the lower portion of the air cleaner, and the drive actuator and the second front fastening portion are installed so as to overlap in the longitudinal direction of the vehicle. The front of the actuator in the front-rear direction of the vehicle may be covered by the second front side fastening portion.

  As described above, according to the first aspect, at least the drive actuator for the EGR valve is installed between the transmission and the air cleaner in the vertical direction of the vehicle. Thus, water dripped from above can be blocked by the air cleaner, and water scattered from below can be blocked by the transmission.

  For this reason, it can prevent that a liquid pours on an EGR valve from the up-down direction, and can prevent that a liquid penetrate | invades inside an EGR valve. Therefore, it is possible to prevent deterioration and corrosion of the valve body of the EGR valve and prevent the reliability of the EGR valve from being lowered.

  The air cleaner was attached to the EGR valve and the EGR cooler via a bracket above the transmission. For this reason, it is possible to prevent the bracket from extending from the internal combustion engine to the air cleaner, thereby shortening the dimension of the bracket. Therefore, it is possible to prevent the bracket itself from vibrating due to the vibration of the internal combustion engine.

In addition, the EGR valve and the EGR cooler are installed side by side in the vehicle front-rear direction, and an air cleaner is attached to the EGR valve and the EGR cooler via a bracket. For this reason, the air cleaner can be supported in a wide range by the EGR valve and the EGR cooler which are relatively rigid and require a relatively large space.
As a result, the air cleaner can be prevented from vibrating due to the vibration of the internal combustion engine, and the durability of the air cleaner can be prevented from deteriorating.

  According to the second aspect, the first front side fastening part of the EGR valve and the second front side fastening part of the air cleaner are connected via the first bracket, and the first rear side fastening part of the EGR cooler and The second rear fastening portion of the air cleaner is connected via the second bracket.

  For this reason, in the state which looked at the air cleaner from the upper surface, an EGR valve and an EGR cooler can be installed between the front end and the rear end of the air cleaner. Thus, a sufficient distance between the front end and the rear end of the air cleaner can be secured, and the air cleaner can be supported in a wide range by the EGR valve and the EGR cooler. Therefore, it is possible to more effectively prevent the air cleaner from vibrating.

  According to the third aspect, in the vertical direction of the vehicle, the EGR valve is installed closer to the lower portion of the air cleaner than the transmission, and the axis of the exhaust gas inlet pipe is set to the vehicle width with respect to the axis of the EGR cooler body. The EGR valve extends below the air cleaner so that the axis of the EGR valve is perpendicular to the axis of the exhaust gas inlet pipe, and the drive actuator is placed on the opposite side of the internal combustion engine with respect to the EGR valve body. installed.

For this reason, the EGR valve can be reliably installed near the lower portion of the air cleaner, and in particular, the drive actuator can be reliably covered with the air cleaner. Therefore, for example, when an air hole communicating with the atmosphere is formed in the drive actuator like a diaphragm type EGR valve, it is possible to prevent liquid from entering the drive actuator from the air hole.
As a result, it is possible to prevent liquid from entering the valve body through the drive actuator, and to prevent deterioration and corrosion of the valve body.

  Moreover, the 1st front side fastening part of an EGR valve can be brought close to the 2nd front side fastening part of an air cleaner, and the dimension of a 1st bracket can be shortened.

  According to the fourth aspect, the EGR valve main body protrudes forward from the EGR valve main body in the front-rear direction of the vehicle, has the boss portion constituting the first front side fastening portion, and the EGR cooler is connected to the EGR pipe. And having a flange portion constituting the first rear fastening portion.

  For this reason, the rigid boss portion and flange portion can be attached to the air cleaner via the first flange and the second flange, and the air cleaner can be stably attached to the EGR valve and the EGR cooler. Therefore, it is possible to more effectively prevent the air cleaner from vibrating due to the vibration of the internal combustion engine, and it is possible to more effectively prevent the durability of the air cleaner from deteriorating.

  According to the fifth aspect, the EGR valve tilts upward from the EGR valve body toward the drive actuator in a state where the EGR valve attached to the internal combustion engine is viewed from the horizontal direction.

  For this reason, the drive actuator can be brought close to the bottom of the air cleaner, and the liquid dropped from above can be blocked by the air cleaner. Therefore, when the drive actuator has an air hole or the like, water can be more effectively prevented from entering the drive actuator through the air hole.

  According to the sixth aspect, since the front-rear direction front of the vehicle of the drive actuator is covered by the second front side fastening portion of the air cleaner, the liquid that enters from the front of the vehicle during the traveling of the vehicle is second front side fastening portion. Can be blocked by. For this reason, when the drive actuator has an air hole or the like, water can be prevented from entering the drive actuator through the air hole.

FIG. 1 is a view showing an embodiment of an auxiliary machine mounting structure for an internal combustion engine for a vehicle according to the present invention, and is a side view of a front portion of the vehicle. FIG. 2 is a diagram showing an embodiment of an auxiliary machine mounting structure for an internal combustion engine for a vehicle according to the present invention, and is a top view of a front portion of the vehicle. FIG. 3 is a view showing an embodiment of an auxiliary machine mounting structure for an internal combustion engine for a vehicle according to the present invention, and is a front view of the internal combustion engine. FIG. 4 is a view showing an embodiment of an auxiliary machine mounting structure for an internal combustion engine for a vehicle according to the present invention, and is a rear view of the internal combustion engine. FIG. 5 is a view showing an embodiment of an auxiliary machine mounting structure for an internal combustion engine for a vehicle according to the present invention, and is a view taken in the direction of arrows VV in FIG. FIG. 6 is a view showing an embodiment of an auxiliary machine mounting structure for an internal combustion engine for a vehicle according to the present invention, and is a perspective view of an exhaust gas recirculation device. 7 is a view showing an embodiment of an auxiliary machine mounting structure for an internal combustion engine for a vehicle according to the present invention, and is a cross-sectional view taken in the direction of arrows VII-VII in FIG. FIG. 8 is a view showing one embodiment of an auxiliary machine mounting structure for an internal combustion engine for a vehicle according to the present invention, and is a view of the periphery of an exhaust gas recirculation device as viewed from the front. FIG. 9 is a view showing an embodiment of an auxiliary machine mounting structure for an internal combustion engine for a vehicle according to the present invention, and is a cross-sectional view of an EGR valve.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of an auxiliary machine mounting structure for an internal combustion engine for a vehicle according to the present invention will be described with reference to the drawings.
FIGS. 1-9 is a figure which shows the auxiliary equipment attachment structure of the internal combustion engine for vehicles of one Embodiment which concerns on this invention.

First, the configuration will be described.
1 and 2, a vehicle 1 includes a vehicle body 2, and the vehicle body 2 includes a dash panel 3 in front of the vehicle 1 in the front-rear direction. The dash panel 3 divides the vehicle body 2 into an engine room 4 installed in front of the vehicle 1 in the front-rear direction and a vehicle compartment 5 installed in the rear of the vehicle in the front-rear direction. Hereinafter, expressions that refer to the front-rear direction such as front and rear are used in the description as directions relative to the front-rear direction of the vehicle 1.

  An engine 6 as an internal combustion engine is installed in the engine room 4. As shown in FIGS. 1 to 4, a transmission 7 is attached to one end (left end) 6 a of the engine 6 in the vehicle width direction. . The vehicle width direction one end 6a of the engine 6 constitutes the vehicle width direction end of the present invention.

  2 and 3, the engine 6 is provided with a supercharger 8 and an intake device 9. The intake device 9 includes an air cleaner 10 installed at one end 6a in the vehicle width direction of the engine 6 and at the top of the transmission 7. The air cleaner 10 is sucked from the front of the vehicle 1 by an intake duct (not shown). Purify the air.

  The intake device 9 includes an air cleaner outlet pipe 11 that introduces the air purified by the air cleaner 10 into the compressor housing 8 a of the supercharger 8.

  The supercharger 8 is installed in front of the engine 6, and the supercharger 8 includes a turbine (not shown) provided inside the compressor housing 8a and a turbine (not shown) that is rotated by the pressure of the exhaust gas. And a housing 8b.

  The intake device 9 includes an intercool linelet pipe 12 (see FIG. 3), and the intercool linelet pipe 12 is connected to an intercooler (not shown) installed in front of the engine 6.

  The intake device 9 includes an intake manifold 13, and the intake manifold 13 is installed at the rear portion of the engine 6. The intake manifold 13 is connected to the intercooler via an intercooler outlet pipe (not shown). The intake manifold 13 introduces intake air introduced from the intercooler through the intercooler outlet into a combustion chamber (not shown) of the engine 6 via an intake port (not shown) of the engine 6.

  The supercharger 8 supercharges the air introduced into the compressor housing 8a from the air cleaner outlet pipe 11 to the intercooler line pipe 12 by a compressor that rotates integrally with the turbine that rotates under the pressure of the exhaust gas.

  Since the temperature of the supercharged air rises, the hot air is introduced into the intercooler and cooled by the intercooler. Thereby, the oxygen density of air is raised. The air with the increased oxygen density is introduced into the combustion chamber of the engine 6 from the intercool line pipe 12 via the intake manifold 13.

  In FIG. 3, an exhaust manifold 14 is attached in front of the engine 6, and the exhaust manifold 14 is connected to a turbine housing 8 b of the supercharger 8. Exhaust gas exhausted from the combustion chamber is introduced into the exhaust manifold 14.

  A catalytic converter 16 is connected to the turbine housing 8 b through an exhaust pipe 15, and exhaust gas discharged from the turbine housing 8 b is introduced into the catalytic converter 16 through the exhaust pipe 15 and purified by the catalytic converter 16. Here, the intake device 9 and the compressor housing 8a of the supercharger 8 constitute an intake system member of the present invention, and the exhaust manifold 14, the exhaust pipe 15, the catalytic converter 16 and the turbine housing 8b of the supercharger 8 are The exhaust system member of the invention is configured.

  On the other hand, the engine 6 is provided with an exhaust gas recirculation device 17. 5 and 6, the exhaust gas recirculation device 17 includes an EGR inlet (Exhaust Gas Recirculation) pipe 18, an EGR valve 19, an EGR cooler 20, and an EGR outlet pipe 21.

  An upstream end 18 a of the EGR inlet pipe 18 is connected to the exhaust manifold 14, and a downstream end 18 b of the EGR inlet pipe 18 is connected to the EGR valve 19. The EGR valve 19 constitutes an adjustment valve that adjusts the flow rate of the exhaust gas. Here, upstream and downstream represent directions in which exhaust gas flows.

  An EGR cooler 20 is connected to the EGR valve 19, and the EGR cooler 20 is provided at an EGR cooler main body 20 </ b> A and an exhaust gas inlet pipe portion 20 </ b> B provided at the front end of the EGR cooler main body 20 </ b> A and connected to the EGR valve 19. And an exhaust gas outlet pipe portion 20C provided at the rear end portion of the EGR cooler main body 20A and connected to the EGR outlet pipe 21.

  Exhaust gas is introduced into the exhaust gas inlet pipe portion 20B from the EGR valve 19, and this exhaust gas is introduced into the EGR cooler body 20A. The exhaust gas outlet pipe portion 20C discharges exhaust gas from the EGR cooler body 20A to the EGR outlet pipe 21.

  5 and 6, the EGR cooler main body 20A includes an inner pipe (not shown) through which exhaust gas flows, and an outer pipe that surrounds the inner pipe and forms a cooling water passage through which cooling water flows between the inner pipe and the inner pipe. 20a.

  The outer pipe 20a includes an introduction pipe 22A for introducing cooling water into the cooling water passage and a discharge pipe 22B for discharging cooling water from the cooling water passage, and the cooling water cooled by a radiator (not shown) is introduced into the introduction pipe 22A. Through the cooling water passage. For this reason, the exhaust gas flowing through the inlet pipe of the EGR cooler body 20A is cooled by the cooling water.

  An upstream end 21 a of the EGR outlet pipe 21 is connected to the EGR cooler 20, and a downstream end 21 b of the EGR outlet pipe 21 is connected to the intake manifold 13. Here, the EGR inlet pipe 18 and the EGR outlet pipe 21 constitute the EGR pipe of the present invention.

  The exhaust gas recirculation device 17 having the above configuration transfers a part of the exhaust gas discharged to the exhaust manifold 14 from the EGR inlet pipe 18 to the intake manifold 13 via the EGR valve 19, EGR cooler 20 and EGR outlet pipe 21. Introduce.

  Thereby, in the intake manifold 13, fresh air and exhaust gas recirculated from the exhaust gas recirculation device 17 are mixed and introduced into the combustion chamber, and nitrogen oxide (NOx) in the exhaust can be mainly reduced. The fuel consumption at the time of partial load of the engine 6 can be improved.

Here, the EGR valve 19 and the EGR cooler 20 of the exhaust gas recirculation device 17 of the present invention constitute an auxiliary device for exhaust gas recirculation that recirculates a part of the exhaust gas from the exhaust system member to the intake system member through the EGR pipe. .
6 to 8, the EGR valve 19 includes an EGR valve main body 23 and a drive actuator 24.

  In FIG. 9, the EGR valve body 23 includes a lower casing 25 in which an exhaust gas inlet portion 25 a into which exhaust gas from the EGR inlet pipe 18 is introduced and an exhaust gas outlet portion 25 b that discharges exhaust gas to the EGR cooler 20 are formed. I have.

  A valve shaft 26 is slidably provided inside the lower casing 25, and a valve body 27 is attached to the tip of the valve shaft 26. The valve body 27 opens and closes the exhaust gas inlet portion 25a. By adjusting the opening of the exhaust gas inlet portion 25a by the valve body 27, the exhaust gas flowing from the EGR inlet pipe 18 to the EGR cooler 20 is controlled. The flow rate is adjusted.

  The drive actuator 24 includes an upper casing 28 attached to the lower casing 25, and a diaphragm 29 and a coil spring 30 are accommodated in the upper casing 28.

  The diaphragm 29 divides the upper casing 28 into a negative pressure chamber 31 and an atmospheric chamber 32, and the coil spring 30 biases the diaphragm 29 downward. The upper end of the valve shaft 26 is attached to the diaphragm 29. When the diaphragm 29 is urged by the coil spring 30, the valve body 27 closes the exhaust gas inlet 25a.

  A negative pressure pipe 33 (see FIG. 5) is attached to the negative pressure chamber 31, and the negative pressure generated in the negative pressure chamber 31 is introduced into the negative pressure chamber 31 through the negative pressure pipe 33. Thus, the diaphragm 29 opens the exhaust gas inlet 25a against the biasing force of the coil spring 30. Thereby, the exhaust gas inlet 25a and the exhaust gas outlet 25b communicate with each other.

In addition, air holes 28a are formed in the upper casing 28, and a plurality of air holes 28a are formed along the circumferential direction of the upper casing 28 (see FIG. 6).
In FIG. 5, the EGR valve 19 and the EGR cooler 20 are installed side by side in the front-rear direction of the vehicle 1. The outer pipe 20a of the EGR cooler main body 20A is provided with a pair of brackets 20b protruding toward one end in the vehicle width direction of the engine 6, and the bracket 20b is attached to the one end 6a in the vehicle width direction of the engine 6. Instead of attaching the EGR cooler 20 to the engine 6, the EGR valve 19 may be attached to the engine 6, and both the EGR cooler 20 and the EGR valve 19 may be attached to the engine 6.

  In FIG. 5, the air cleaner 10 is attached to the EGR valve 19 and the EGR cooler 20 via brackets 35 and 36 above the transmission 7, and in the vertical direction of the vehicle 1, the EGR valve main body 23 of the EGR valve 19 and The drive actuator 24 is installed between the transmission 7 and the air cleaner 10 (see FIGS. 3 and 4). Here, the bracket 35 constitutes the first bracket of the present invention, and the bracket 36 constitutes the second bracket of the present invention.

  In FIG. 5, a pair of boss portions 23 a are formed at the front end portion of the outer pipe 20 a of the EGR valve main body 23, and the boss portions 23 a protrude forward from the EGR valve main body 23. A front attachment portion 10A is formed at the front end portion of the air cleaner 10, and the boss portion 23a is connected to the front attachment portion 10A via a bracket 35.

  A flange portion 20c is provided in the exhaust gas outlet pipe portion 20C attached to the downstream end of the EGR cooler 20. A rear attachment portion 10B is formed at the rear end portion of the air cleaner 10, and the flange portion 20c is attached to the rear attachment portion 10B via the bracket 36.

  Therefore, the air cleaner 10 of this embodiment is attached to the EGR valve 19 and the EGR cooler 20 via the brackets 35 and 36.

Here, the boss portion 23a of the EGR valve 19 of the present embodiment constitutes a first front fastening portion of the present invention, and the front mounting portion 10A of the air cleaner 10 constitutes a second front fastening portion of the present invention. . Moreover, the flange part 20c of the EGR cooler 20 of this embodiment comprises the 1st back side fastening part of this invention, and the back side attachment part 10B of the air cleaner 10 has the 2nd back side fastening part of this invention. Configure.
As shown in FIG. 4, the EGR valve 19 is installed closer to the lower portion 10 a of the air cleaner 10 than the transmission 7 in the vertical direction of the vehicle 1.

  In FIG. 5, the axis A of the exhaust gas inlet pipe 20B is inclined outward in the vehicle width direction with respect to the axis B of the EGR cooler body 20A. In the EGR valve 19, the EGR valve 19 extends to the lower portion 10a of the air cleaner 10 so that the axis C of the EGR valve 19 is orthogonal to the axis A of the exhaust gas inlet pipe portion 20B, and the drive actuator 24 is connected to the EGR valve main body 23. On the other hand, it is installed on the opposite side to the engine 6.

  As shown in FIG. 7, the EGR valve 19 is inclined upward from the EGR valve body 23 toward the drive actuator 24 in a state where the EGR valve 19 attached to the engine 6 is viewed from the horizontal direction. That is, the EGR valve 19 is inclined upward by an angle θ from the EGR valve body 23 toward the drive actuator 24 with respect to the horizontal axis D.

  7 and 8, the front attachment portion 10A of the air cleaner 10 protrudes downward from the lower portion 10a of the air cleaner 10, and the drive actuator 24 and the front attachment portion 10A are installed so as to overlap in the front-rear direction of the vehicle 1. ing. Thereby, the front of the drive actuator 24 is covered with the front mounting portion 10A.

Next, the operation will be described.
As in the present embodiment, the diaphragm type EGR valve 19 includes a drive actuator 24 in which an air hole 28a is formed. In such an EGR valve 19, a liquid that has entered the engine room 4, for example, water, enters the upper casing 28 of the drive actuator 24 through the air holes 28 a and adheres to the diaphragm 29 to prevent deterioration or corrosion of the diaphragm 29. There is a risk.

  In addition, the upper casing 28 may travel along the lower casing 25 and adhere to the valve body 27, which may cause deterioration or corrosion of the valve body 27. As a result, the reliability of the EGR valve 19 may be reduced.

  As for the possibility of water invading into the EGR valve 19, first, water scooped up by a belt that drives an auxiliary machine (not shown) adheres to the back surface of the engine hood 4A (see FIG. 1), and these become traps, It may be dripped from the engine hood 4A.

  Further, when the vehicle 1 is washed, it is conceivable to enter the engine room 4. Furthermore, it is conceivable that rainwater enters the engine room 4 when the vehicle 1 travels in the rain, or enters the engine room 4 through a gap between the engine hood 4A and the vehicle body 2 when the vehicle 1 stops.

  On the other hand, according to the accessory mounting structure of the present embodiment, the EGR valve 19 and the EGR cooler 20 are installed side by side in the front-rear direction of the vehicle 1, and the EGR cooler 20 is installed in the vehicle width direction one end 6 a of the engine 6. The air cleaner 10 is attached to the EGR valve 19 and the EGR cooler 20 via brackets 35 and 36 above the transmission 7, and the EGR valve 19 is disposed between the transmission 7 and the air cleaner 10 in the vertical direction of the vehicle 1. Installed.

  As a result, as shown in FIGS. 1, 3, and 4, water W dripped from above the engine room 4 is blocked by the air cleaner 10, and water scattered from below the engine room 4 is blocked by the transmission 7. Can do.

  For this reason, it is possible to prevent water from splashing on the EGR valve 19 from above and below, and to prevent water from entering the EGR valve 19. Therefore, the deterioration and corrosion of the valve body 27 of the EGR valve 19 can be prevented, and the reliability of the EGR valve 19 can be prevented from being lowered.

  Further, according to the auxiliary machine mounting structure of the present embodiment, the air cleaner 10 is mounted on the EGR valve 19 and the EGR cooler 20 via the brackets 35 and 36 above the transmission 7. For this reason, it is possible to prevent the brackets 35 and 36 from extending from the engine 6 to the air cleaner 10 and to shorten the dimensions of the brackets 35 and 36. Therefore, it is possible to prevent the brackets 35 and 36 from vibrating due to the vibration of the engine 6.

  In addition, the EGR valve 19 and the EGR cooler 20 are installed side by side in the front-rear direction of the vehicle 1, and the air cleaner 10 is attached to the EGR valve 19 and the EGR cooler 20 via brackets 35 and 36. For this reason, it is not necessary to provide an EGR pipe between the EGR valve 19 and the EGR cooler 20, and the rigidity between the EGR valve 19 and the EGR cooler 20 can be made relatively high. Furthermore, the air cleaner 10 can be supported in a wide range by the EGR valve 19 and the EGR cooler 20 that are relatively rigid and require a relatively large space.

  As a result, the air cleaner 10 can be prevented from vibrating due to the vibration of the engine 6, and the durability of the air cleaner 10 can be prevented from deteriorating.

  Further, according to the accessory mounting structure of the present embodiment, the boss portion 23a of the EGR valve 19 and the air cleaner front mounting portion 10A are connected via the bracket 35, and the flange portion 20c of the EGR cooler 20 and the rear side of the air cleaner 10 are connected. The attachment portion 10B is connected via the bracket 36.

  For this reason, in the state which looked at the air cleaner 10 from the upper surface, the EGR valve | bulb 19 and the EGR cooler 20 can be installed between the front end of the air cleaner 10, and a rear end. Thus, the air cleaner 10 can be supported in a wide range by the EGR valve 19 and the EGR cooler 20 with a sufficient distance between the front end and the rear end of the air cleaner 10. Therefore, it is possible to more effectively prevent the air cleaner 10 from vibrating.

Further, according to the auxiliary machine mounting structure of the present embodiment, the EGR valve 19 is installed closer to the lower part 10a of the air cleaner 10 than the transmission 7 in the vertical direction of the vehicle 1, and the axis A of the exhaust gas inlet pipe part 20B is arranged. The EGR cooler main body 20A was inclined outward in the vehicle width direction with respect to the axis B.
In addition, the EGR valve 19 extends to the lower portion 10a of the air cleaner 10 so that the axis C of the EGR valve 19 is orthogonal to the axis A of the exhaust gas inlet pipe portion 20B, and the drive actuator 24 is connected to the EGR valve main body 23. Installed on the opposite side of the engine 6.

  For this reason, the EGR valve 19 can be reliably installed near the lower portion 10 a of the air cleaner 10, and the drive actuator 24 can be reliably covered with the air cleaner 10. Therefore, when the air hole 28a communicating with the atmosphere is formed in the drive actuator 24 like the diaphragm type EGR valve 19, water can be prevented from entering the drive actuator 24 from the air hole 28a.

  As a result, it is possible to prevent water from entering the valve body 27 through the drive actuator 24, and to prevent deterioration and corrosion of the valve body 27.

  Further, the boss portion 23a of the EGR valve 19 can be brought close to the front mounting portion 10A of the air cleaner 10, and the dimension of the bracket 35 can be shortened.

  Further, according to the auxiliary machine mounting structure of the present embodiment, the EGR valve main body 23 has the boss portion 23 a protruding forward from the EGR valve main body 23, and the EGR cooler 20 is connected to the upstream end of the EGR outlet pipe 21. The flange portion 20c is provided.

  Therefore, the rigid boss portion 23a and the flange portion 20c can be attached to the air cleaner 10 via the brackets 35 and 36, and the air cleaner 10 can be stably attached to the EGR valve 19 and the EGR cooler 20. Therefore, it is possible to more effectively prevent the air cleaner 10 from vibrating due to the vibration of the engine 6, and it is possible to more effectively prevent the durability of the air cleaner 10 from deteriorating.

  Further, according to the auxiliary machine mounting structure of the present embodiment, the EGR valve 19 is moved upward from the EGR valve main body 23 toward the drive actuator 24 in a state where the EGR valve 19 mounted on the engine 6 is viewed from the horizontal direction. Tilted.

  For this reason, the drive actuator 24 can be brought close to the lower portion 10 a of the air cleaner 10, and the water W dripped from above the engine room 4 can be blocked by the air cleaner 10. Accordingly, it is possible to more effectively prevent water from entering the drive actuator 24 through the air hole 28a.

  Further, according to the auxiliary machine mounting structure of the present embodiment, the front mounting portion 10A of the air cleaner 10 is protruded downward from the lower portion 10a of the air cleaner 10, and the drive actuator 24 and the front mounting portion 10A overlap in the front-rear direction of the vehicle 1. The front of the drive actuator 24 was covered with the front mounting portion 10A.

  Thereby, the water which invades from the front when the vehicle 1 travels can be blocked by the front mounting portion 10A. Therefore, water can be prevented from entering the drive actuator 24 through the air hole 28a.

  The EGR valve of the present embodiment is configured by a diaphragm type EGR valve 19, but is not limited to this. In the EGR valve 19 of this embodiment, the EGR valve main body 23 and the drive actuator 24 are installed below the air cleaner 10, but only the drive actuator 24 having the air holes 28 a may be installed below the air cleaner 10.

  While embodiments of the invention have been disclosed, it will be apparent to those skilled in the art that changes may be made without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims.

DESCRIPTION OF SYMBOLS 1 ... Vehicle, 6 ... Engine (internal combustion engine), 6a ... Vehicle width direction one end part (vehicle width direction end part), 7 ... Transmission, 8a ... Compressor housing (intake system member) ), 8b ... Turbine housing (exhaust system member), 9 ... Intake device (intake system member), 10 ... Air cleaner, 10A ... Front mounting portion (second front fastening portion), 10B. ..Rear mounting part (second rear fastening part), 10a ... lower part (lower part of air cleaner), 14 ... exhaust manifold (exhaust system member), 15 ... exhaust pipe (exhaust system member) , 16 ... catalytic converter (exhaust system member), 17 ... exhaust gas recirculation device, 18 ... EGR inlet piping (EGR piping), 21 ... EGR outlet piping (EGR piping), 19 ... EGR valve (auxiliary machine), 20 ... EGR cooler (auxiliary machine), 20A ... EGR cooler body, 20B ... exhaust gas inlet pipe, 20c ... Lung part (first rear fastening part), 21 ... outlet pipe (EGR pipe), 23 ... EGR valve body, 23a ... boss part (first front fastening part), 24 ... Drive actuator, 27 ... Valve, 35 ... Bracket (first bracket), 36 ... Bracket (second bracket)

Claims (6)

An exhaust gas recirculation device including an EGR pipe that recirculates a part of the exhaust gas from the exhaust system member to the intake system member and an auxiliary device for exhaust gas recirculation; an air cleaner that purifies the air sucked into the intake system member; A vehicle internal combustion engine accessory mounting structure in which a transmission is installed at an end in the vehicle width direction,
The auxiliary machine includes an EGR valve that adjusts a flow rate of exhaust gas flowing through the EGR pipe, and an EGR cooler that cools exhaust gas flowing through the EGR pipe,
The EGR valve includes an EGR valve body having a valve body that adjusts an opening degree of the EGR pipe, and a drive actuator that is attached to the EGR valve body and drives the valve body,
The EGR valve and the EGR cooler are installed side by side in the front-rear direction of the vehicle, and at least one of the EGR valve and the EGR cooler is attached to the vehicle width direction end of the internal combustion engine,
The air cleaner is attached to the EGR valve and the EGR cooler via a bracket above the transmission,
An auxiliary machine mounting structure for an internal combustion engine for a vehicle, wherein at least the drive actuator of the EGR valve is installed between the transmission and the air cleaner in the vertical direction of the vehicle. The bracket is composed of a first bracket and a second bracket;
A first front side fastening portion is formed at the front and rear direction front end portion of the vehicle of the EGR valve, and a second front side fastening portion is formed at the front and rear direction front end portion of the vehicle of the air cleaner,
A first rear side fastening portion is formed at the front and rear direction rear end portion of the vehicle of the EGR cooler, and a second rear side fastening portion is formed at the front and rear direction rear end portion of the air cleaner of the vehicle,
The first front side fastening part and the second front side fastening part are connected via the first bracket,
The auxiliary attachment structure for an internal combustion engine for a vehicle according to claim 1, wherein the first rear fastening portion and the second rear fastening portion are connected via the second bracket. The EGR cooler is provided in an EGR cooler body and an EGR cooler body, and has an exhaust gas inlet pipe portion through which exhaust gas is introduced from the EGR valve;
In the vertical direction of the vehicle, the EGR valve is installed closer to the lower portion of the air cleaner than the transmission,
Inclining the axis of the exhaust gas inlet pipe part outward in the vehicle width direction with respect to the axis of the EGR cooler body,
The EGR valve extends below the air cleaner so that the axis of the EGR valve is orthogonal to the axis of the exhaust gas inlet pipe, and the drive actuator is placed on the opposite side of the EGR valve body from the internal combustion engine. 3. The auxiliary machine mounting structure for an internal combustion engine for a vehicle according to claim 1, wherein the auxiliary machine mounting structure is installed. The EGR valve main body has a boss portion that protrudes forward from the EGR valve main body in the front-rear direction of the vehicle and constitutes the first front-side fastening portion;
The auxiliary installation of the internal combustion engine for a vehicle according to claim 2 or 3, wherein the EGR cooler has a flange portion connected to the EGR pipe and constituting the first rear side fastening portion. Construction.   2. The EGR valve tilts upward from the EGR valve main body toward the drive actuator in a state where the EGR valve attached to the internal combustion engine is viewed from a horizontal direction. 5. An auxiliary machine mounting structure for an internal combustion engine for a vehicle according to any one of 4 above. The second front fastening portion of the air cleaner protrudes downward from a lower portion of the air cleaner;
The drive actuator and the second front side fastening portion are installed so as to overlap in the longitudinal direction of the vehicle,
The auxiliary machine mounting structure for an internal combustion engine for a vehicle according to any one of claims 2 to 5, wherein a front side in the front-rear direction of the vehicle of the drive actuator is covered by the second front side fastening portion. .

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