JP2019019700A - Internal combustion engine for vehicle - Google Patents

Abstract

To provide an internal combustion engine for a vehicle which can prevent that a chain case is warped due to stress applied from a tension impartment member, and can prevent that a connecting force between the chain case and an engine main body is lowered.SOLUTION: When setting a space which is surrounded by a first virtual plane face 91 for connecting a front boss part 53A and a rear boss part 53B, a second virtual plane face 92 extending to a fore-and-aft direction while passing a case-side connecting part 51A, a third virtual plane face 93 extending to a vertical direction while passing the front boss part 53A, and a fourth virtual plane face 94 extending to the vertical direction while passing the rear boss part 53B as a bracket arrangement space 96 in which a first mount bracket 46 is arranged, a tensioner connecting part 34a of an auto-tensioner 34 is arranged in the bracket arrangement space 96.SELECTED DRAWING: Figure 9

Description

  The present invention relates to an internal combustion engine for a vehicle.

  The engine is provided with a belt tension adjusting device that applies tension to a driving belt that transmits power between a crankshaft and an auxiliary machine (see Patent Document 1).

  This belt tension adjusting device is provided below the mount mounting part that bulges outward from the chain case, and is supported on the end of the arm, and is supported so as to be swingable around a swinging pin fixed to the engine. And a tensioner pulley that contacts the drive belt, and an auto tensioner that has one end connected to the arm and the other end connected to the chain case and presses the arm.

  One end portion of the mount bracket is connected to the mount attachment portion, and the other end portion of the mount bracket is supported by the vehicle body via the mount device.

Japanese Patent Laid-Open No. 2006-176436

  In such a conventional belt tension adjusting device, the other end of the auto tensioner is connected to the chain case. Since the auto tensioner presses the tension pulley against the drive belt with a large force, a large stress acts on the chain case from the other end of the auto tensioner.

  Thereby, a chain case will bend and there exists a possibility that the connection force of a chain case and an engine main body may fall. In particular, when the other end of the auto tensioner is connected to a flat portion having low rigidity in the chain case, the flat portion is easily bent by the stress acting on the flat portion of the other end of the auto tensioner. The connection force between the case and the engine body tends to decrease.

  The present invention has been made paying attention to the above situation, and can prevent the chain case from being bent by the stress applied from the tension applying member, and the connection force between the chain case and the engine body can be reduced. It is an object of the present invention to provide a vehicle internal combustion engine that can be prevented.

  The present invention includes an engine main body having a crankshaft, a case member connected to an end of the engine main body, a vibration-proof mount member provided on the vehicle body side having a mount side connecting portion, and the case member. A bulging portion that bulges toward the anti-vibration mount member and has a case-side coupling portion at an upper portion; a driving belt that is provided below the bulging portion and transmits power from the crankshaft to the auxiliary device; and A tension applying member that is provided below the bulging portion and applies tension to the drive belt; and a mount bracket that connects the case side connecting portion and the mount side connecting portion; A tensioner pulley that contacts the drive belt and a tensioner connecting portion provided at one end are connected to the case member, and the tensioner pulley on the other end side. Provided with a tensioner member that presses the tensioner pulley against the drive belt, wherein the case member includes a front boss portion positioned below the bulging portion, and the bulging portion. And a rear boss portion positioned rearward in the vehicle front-rear direction with respect to the front boss portion, and the mount bracket includes an intermediate connecting portion, and the case side The first mount bracket is connected to a connection portion, and the second mount bracket is connected to the intermediate connection portion and the mount side connection portion. The first mount bracket has a proximal end side. An upper wall portion connected to the case side connection portion, and a vertical wall portion that extends downward from the upper wall portion and has a lower end portion in the extending direction connected to the front boss portion and the rear boss portion. A first virtual plane that extends in the front-rear direction of the vehicle across the front boss part and the rear boss part, and a second virtual plane that extends in the front-rear direction of the vehicle along the case-side connecting part, A space surrounded by a third virtual plane extending in the vertical direction of the vehicle through the front boss portion and a fourth virtual plane extending in the vertical direction of the vehicle through the rear boss portion is the first mount. When the bracket arrangement space in which the bracket is arranged is used, the tensioner connecting portion is arranged in the bracket arrangement space.

  As described above, according to the present invention, the chain case can be prevented from being bent by the stress applied from the tension applying member, and the connection force between the chain case and the engine body can be prevented from being lowered.

FIG. 1 is a plan view of a front portion of a vehicle provided with an internal combustion engine for a vehicle according to an embodiment of the present invention. FIG. 2 is a right side view of the vehicle internal combustion engine according to the embodiment of the present invention. 3 is a cross-sectional view taken along the line III-III in FIG. FIG. 4 is a cross-sectional view of the right mount device in the direction of IV-IV in FIG. FIG. 5 is a view of a right mounting device for an internal combustion engine for a vehicle according to an embodiment of the present invention as viewed from the right front side. FIG. 6 is a top view of a right mount device for an internal combustion engine for a vehicle according to an embodiment of the present invention. FIG. 7 is a top view of a right mount device for a vehicle internal combustion engine according to an embodiment of the present invention, showing a state in which a second mount bracket is removed. FIG. 8 is a top view of the right mount device for the vehicle internal combustion engine according to the embodiment of the present invention, and shows a state in which the first mount bracket and the second mount bracket are removed. FIG. 9 is a right side view of the vehicle internal combustion engine according to the embodiment of the present invention, and shows a state in which the first mount bracket is removed. FIG. 10 is a view of the internal combustion engine for a vehicle according to one embodiment of the present invention as viewed from the right rear side, and shows a state in which the first mount bracket is removed. FIG. 11 is a right side view of the vehicle internal combustion engine according to the embodiment of the present invention, and shows a state in which the first mount bracket is attached. FIG. 12 is a view of the first mounting bracket of the right mounting device for an internal combustion engine for a vehicle according to an embodiment of the present invention as seen from the diagonally left front. FIG. 13 is a left side view of the first mount bracket of the right mount apparatus for the vehicle internal combustion engine according to the embodiment of the present invention. FIG. 14 is a rear view of the first mount bracket of the right mount apparatus for the vehicle internal combustion engine according to the embodiment of the present invention. FIG. 15 is a right side view of a vehicle internal combustion engine including a right mount device having another shape according to an embodiment of the present invention.

An internal combustion engine for a vehicle according to an embodiment of the present invention has an engine main body having a crankshaft, a case member connected to an end of the engine main body, a mount side connecting portion, and is provided on the vehicle body side. Anti-vibration mount member, bulge from case member toward anti-vibration mount member, bulge part with case side connecting part at upper part, provided below bulge part, and transmit power from crankshaft to auxiliary equipment Drive belt, a tension applying member that is provided below the bulging portion and applies tension to the driving belt, and a mount bracket that connects the case side connecting portion and the mount side connecting portion. The tensioner pulley that contacts the drive belt and the tensioner connecting portion provided at one end are connected to the case member, and the tensioner pulley is provided on the other end side. An internal combustion engine for a vehicle including a tensioner member that presses a joint pulley against a drive belt, wherein the case member includes a front boss portion positioned below the bulge portion, a lower boss portion, and a front boss A rear boss portion located rearward in the vehicle front-rear direction with respect to the portion, and the mount bracket has an intermediate connecting portion and is connected to the case side connecting portion, It is divided | segmented into the 2nd mounting bracket which connects an intermediate | middle connection part and a mount side connection part, The 1st mount bracket has an upper wall part by which a base end side is connected to a case side connection part, and an upper wall part The lower end of the extending direction includes a vertical wall portion connected to the front boss portion and the rear boss portion, and extends in the front-rear direction of the vehicle across the front boss portion and the rear boss portion. The first virtual plane and A second virtual plane extending in the front-rear direction of the vehicle along the case side connecting portion, a third virtual plane extending in the vertical direction of the vehicle through the front boss portion, and the vertical direction of the vehicle through the rear boss portion When the space surrounded by the fourth virtual plane extending to the bracket is defined as a bracket arrangement space in which the first mount bracket is arranged, the tensioner connecting portion is arranged in the bracket arrangement space.
Thereby, it is possible to prevent the chain case from being bent by the stress applied from the tension applying member, and it is possible to prevent the coupling force between the chain case and the engine body from being lowered.

Hereinafter, a vehicle internal combustion engine according to an embodiment of the present invention will be described with reference to the drawings.
1 to 15 are views showing an internal combustion engine for a vehicle according to an embodiment of the present invention. In FIG. 1 to FIG. 15, up, down, front, back, left, and right directions are such that the width direction of the vehicle is the left and right direction and the height direction of the vehicle is the up and down direction when the direction in which the vehicle travels is front and the direction in which the vehicle retreats is back.

First, the configuration will be described.
In FIG. 1, a vehicle 1 includes a left side member 2L, a right side member 2R, and a cross member 3.

  The left side member 2L and the right side member 2R are separated in the width direction of the vehicle 1 (hereinafter referred to as the vehicle width direction) and extend in the front-rear direction. The cross member 3 extends inward in the vehicle width direction from the left side member 2L and the right side member 2R, and connects the left side member 2L and the right side member 2R.

  An engine room 4 surrounded by a left side member 2L, a right side member 2R, and a cross member 3 is provided at the front portion of the vehicle 1, and a power train 5 is disposed in the engine room 4.

  The power train 5 includes an engine 6 as an internal combustion engine and a transmission 7. The engine 6 and the transmission 7 are arranged on the inner side in the vehicle width direction with respect to the left side member 2L and the right side member 2R. They are arranged side by side in the width direction. The engine 6 converts thermal energy into mechanical energy, and the transmission 7 shifts and outputs the rotational speed of the engine 6.

  The left side member 2L is provided with a left mount device 8, and the left mount device 8 elastically supports the power train 5 on the left side member 2L. The right side member 2R is provided with a right mount device 9, and the right mount device 9 elastically supports the power train 5 on the right side member 2R.

  A rear mount device 10 is provided on the cross member 3, and the rear mount device 10 elastically supports the power train 5 on the cross member 3. The right mount device 9 of the present embodiment constitutes the mount device of the present invention.

  In FIG. 2, the engine 6 includes a cylinder block 11, a cylinder head 12 (see FIG. 3), a cylinder head cover 13, and an oil pan 14. The cylinder block 11 and the cylinder head 12 of the present embodiment constitute the engine body of the present invention.

  A chain case 21 is attached to the right side surface of the cylinder block 11 and the cylinder head 12 in the vehicle width direction (see FIG. 3), and the chain case 21 is provided on the right side surface of the cylinder block 11 and the cylinder head 12. Do not cover the timing chain. The chain case 21 of this embodiment constitutes the case member of the present invention.

  The cylinder block 11 is provided with a plurality of cylinders (not shown). A piston (not shown) is accommodated in the cylinder, and the piston reciprocates in the vertical direction with respect to the cylinder. The piston is connected to the crankshaft 15 via a connecting rod (not shown), and the reciprocating motion of the piston is converted into the rotational motion of the crankshaft 15 via the connecting rod.

  The cylinder head 12 is provided with a plurality of intake ports (not shown), a plurality of intake valves that open and close the intake ports, a plurality of exhaust ports, a plurality of exhaust ports that open and close the exhaust ports, and the like. The intake port introduces air into the cylinder, and the exhaust port discharges the exhaust gas burned in the cylinder from the cylinder.

  In FIG. 3, a valve operating chamber 16 is formed between the cylinder head 12 and the cylinder head cover 13, and an exhaust camshaft 17 and an intake camshaft (not shown) are accommodated in the valve operating chamber 16.

  The exhaust camshaft 17 is provided with an exhaust cam 17A. The exhaust cam 17A opens and closes an exhaust port by driving an exhaust valve as the exhaust camshaft 17 rotates. The details of the intake camshaft will be omitted.

  A hydraulic actuator 18 of a variable valve mechanism is provided at the right end portion of the exhaust camshaft 17. The hydraulic actuator 18 includes an advance chamber and a retard chamber (not shown) into which oil is introduced. The hydraulic actuator 18 controls the rotation phase of the exhaust camshaft 17 to the advance side when oil is introduced into the advance chamber, and changes the rotation phase of the exhaust camshaft 17 when oil is introduced into the retard chamber. Control to the retard side.

The timing chain covered by the chain case 21 connects the crankshaft 15, the exhaust camshaft 17, and the intake camshaft, and the timing chain transmits the power of the crankshaft 15 to the exhaust camshaft 17 and the intake camshaft. .
The oil pan 14 stores oil for lubricating the crankshaft 15 and the piston.

In FIG. 2, a water pump pulley 22, a crank pulley 23, a generator pulley 24, and an idler pulley 25 are rotatably provided on the right side of the engine 6.
The water pump pulley 22 is fixed to an input shaft 22A of a water pump (not shown) mounted on the cylinder block 11, and the water pump pulley 22 rotates together with the input shaft 22A and transmits power to the water pump. The crank pulley 23 is fixed to the right end portion of the crankshaft 15 and rotates clockwise integrally with the crankshaft 15.

  The generator pulley 24 is fixed to the input shaft 26A of the generator 26 attached to the cylinder block 11, and rotates together with the input shaft 26A to transmit power to the generator 26. The generator 26 generates power by electromagnetic induction and charges a battery (not shown) by rotating a rotor (not shown) provided on the input shaft 26A. The idler pulley 25 is rotatably supported by the cylinder block 11. The water pump and generator 26 of the present embodiment constitute an auxiliary machine of the present invention.

 An endless drive belt 27 is wound around the water pump pulley 22, the crank pulley 23, the generator pulley 24 and the idler pulley 25. The drive belt 27 rotates the water pump and the generator 26 by transmitting the power of the crankshaft 15 from the crank pulley 23 to the water pump pulley 22 and the generator pulley 24.

  The idler pulley 25 is provided between the crank pulley 23 and the generator pulley 24 so as to apply tension to a portion of the drive belt 27 that travels from the crank pulley 23 to the generator pulley 24.

  A belt tensioner 31 is disposed in the chain case 21, and the belt tensioner 31 is disposed below a bulging portion 51 described later. The belt tensioner 31 is disposed above the crank pulley 23 and in front of the water pump pulley 22 when viewed from the vehicle width direction.

  The belt tensioner 31 includes an arm 32, a tensioner pulley 33, and an auto tensioner 34. One end of the arm 32 is swingably supported by the cylinder block 11. The tensioner pulley 33 is rotatably supported at the other end of the arm 32 and is in contact with the drive belt 27.

  The auto tensioner 34 has a cylindrical damper 34A that is extendable and contractible in the axial direction. A tensioner connecting portion 34a is provided at the upper end (one end) of the damper 34A, and the lower end (the other end) of the damper 34A is connected to the arm 32.

  A spring (not shown) is provided on the inner peripheral portion of the damper 34A, and the damper 34A is urged by the spring and extends to generate a pressing force in the axial direction. As a result, the auto tensioner 34 can apply tension to the drive belt 27 by pressing the tensioner pulley 33 against the drive belt 27 via the arm 32, and loosening due to a decrease in the tension of the drive belt 27 is suppressed.

  As a result, the occurrence of slippage between the drive belt 27 and the pulleys 22, 23, 24 is suppressed. Note that the auto tensioner 34 is not limited to the spring type, and may be configured by an auto tensioner such as a hydraulic chamber or a pneumatic type, and a spring for applying tension and a hydraulic pressure for damping are used in combination. It may consist of things.

  2 and 10, the chain case 21 is formed with a flat portion 21A extending in the vertical direction. In FIG. 4, a tensioner connecting boss 52 is formed in the flat portion 21A, and the tensioner connecting portion 34a is connected to the tensioner connecting boss 52 by a bolt 37A. The belt tensioner 31 of this embodiment constitutes a tension applying member of the present invention, and the auto tensioner 34 constitutes a tensioner member of the present invention.

  3 and 4, the right mount device 9 includes an anti-vibration mount member 41 and a mount bracket 45. The anti-vibration mount member 41 is provided on the right side member 2R side. The anti-vibration mount member 41 includes an outer cylinder 42, a mount rubber 43, and a shaft member 44. The center axis of each of the outer cylinder 42 and the shaft member 44 extends in the vertical direction.

  The outer cylinder 42 is provided with an attachment piece 42A extending outward from the outer cylinder 42 in the vehicle width direction and an attachment piece 42B extending in the vehicle front-rear direction. The mounting piece 42A is fixed to the vehicle body panel 36 by bolts 37B, and the mounting piece 42B is fixed to the right side member 2R by bolts 37C (see FIGS. 5 to 8). The right side member 2R and the vehicle body panel 36 of the present embodiment constitute the vehicle body of the present invention.

  The mount rubber 43 is accommodated in the outer cylinder 42, and the outer periphery of the mount rubber 43 is fixed to the outer cylinder 42 by vulcanization adhesion or the like. The shaft member 44 is fixed to the inner peripheral portion of the mount rubber 43 by vulcanization adhesion or the like.

  A mount bracket 45 is connected to the shaft member 44 by a bolt 37 </ b> D, and the mount bracket 45 connects the vibration-proof mount member 41 and the chain case 21. The shaft member 44 of the present embodiment constitutes the mount side connecting portion of the present invention.

  The chain case 21 is provided in the engine 6 so as to face the vibration-proof mount member 41 in the vehicle width direction. 9 and 10, a bulging portion 51 is provided on the upper side of the flat portion 21 </ b> A of the chain case 21.

  The bulging portion 51 bulges from the outer surface of the chain case 21 toward the vibration-proof mount member 41 in the vehicle width direction, and is provided to be separated from the vibration-proof mount member 41 in the front-rear direction (FIG. 8). reference).

  A case-side connecting portion 51A extending in the front-rear direction is provided at the upper portion of the bulging portion 51, and three screw grooves 51a extending downward from the case-side connecting portion 51A are formed in the bulging portion 51 (see FIG. 8, see FIG.

 The mount bracket 45 of this embodiment connects the shaft member 44 and the case side connecting portion 51A of the bulging portion 51. As shown in FIG. 1, the anti-vibration mount member 41 connects the power train 5 to the right side. The member 2R and the vehicle body panel 36 are elastically supported.

  3 to 5, the mount bracket 45 is divided into a first mount bracket 46 and a second mount bracket 47.

  12 and 13, the first mount bracket 46 includes an upper wall portion 61 and a vertical wall portion 62. The upper wall portion 61 extends in the front-rear direction. The upper wall 61 has a bracket side connecting portion 61A formed on the base end side (the rear side in the front-rear direction of the vehicle 1) with the central portion in the extending direction of the upper wall portion 61 as a boundary, and the front end side (the front-rear direction of the vehicle 1). An intermediate connecting portion 61B extending from the bracket side connecting portion 61A to the side in the vehicle width direction of the shaft member 44 is formed on the front side (see FIG. 7).

  Two through holes 61a are formed in the bracket side connecting portion 61A, and the bracket side connecting portion 61A is connected to the case side connecting portion 51A of the bulging portion 51 by a bolt 37F (see FIGS. 5 and 7). ). In FIG. 7, a part of the bulging portion 51 is indicated by an imaginary line.

  In FIG. 7, the intermediate connecting portion 61 </ b> B of the present embodiment is provided at an upper portion of the upper wall portion 61 and at a position adjacent to the case side connecting portion 51 </ b> A of the bulging portion 51 in the front-rear direction. Three through holes 61b are formed in the intermediate connecting portion 61B, and one end of the second mount bracket 47 is connected to the intermediate connecting portion 61B by a bolt 37G and a stud bolt 37H (FIGS. 5 and 6). reference).

  The other end of the second mount bracket 47 is connected to the upper end of the shaft member 44 by a bolt 37D (see FIG. 3). Here, the intermediate connecting portion 61B is positioned on the upper portion of the upper wall portion 61. The intermediate connecting portion 61B that is separate from the upper wall portion 61 is attached to the upper portion of the upper wall portion 61, and the intermediate connecting portion 61B. Is configured from the upper surface of the upper wall portion 61. The intermediate connecting portion 61B constitutes a portion where one end of the second mount bracket 47 is placed.

  In FIG. 12, the vertical wall portion 62 extends downward from the vehicle width direction outer end portion 61c of the upper wall portion 61 in a region corresponding to the bracket side connecting portion 61A and the intermediate connecting portion 61B extending in the front-rear direction. . FIG. 13 shows regions (ranges) in the front-rear direction of the bracket side connecting portion 61A and the intermediate connecting portion 61B.

  That is, the vertical wall portion 62 includes a bracket-side connecting portion 61A that extends in the front-rear direction facing the case-side connecting portion 51A in the vehicle width direction, and an intermediate connecting portion 61B that extends in the front-rear direction continuously to the bracket-side connecting portion 61A. In the front-rear direction region of the upper wall portion 61 corresponding to, the vehicle extends in the vehicle width direction outer end portion 61c of the upper wall portion 61 downward.

  9 and 10, the flat portion 21A of the chain case 21 is formed with a front boss portion 53A, a rear boss portion 53B, and an upper boss portion 53C. The lower end portion and the front end portion in the extending direction of the vertical wall portion 62 are connected to the front boss portion 53A, the rear boss portion 53B, and the upper boss portion 53C by bolts 37I (see FIG. 11).

  12 and 13, the vertical wall 62 is formed with a front boss 62A, a rear boss 62B and an upper boss 62C. The front boss 62A, the rear boss 62B and the upper boss 62C are Further, it protrudes from the vertical wall portion 62 toward the chain case 21 (see FIG. 14).

  9 and 10, the rear boss portion 53 </ b> B of the chain case 21 is formed below the bulging portion 51. The front boss portion 53A is formed below the bulging portion 51, on the front side of the rear boss portion 53B, and side by side with the rear boss portion 53B.

  The front boss portion 53A is provided away from the case side connecting portion 51A in the front-rear direction, and the rear boss portion 53B is formed directly below the case side connecting portion 51A.

  In FIG. 11, the upper boss portion 53C is formed on the side opposite to the case side connecting portion 51A with respect to the intermediate connecting portion 61B and adjacent to the intermediate connecting portion 61B in the front-rear direction. In FIG. 9, the upper boss portion 53C faces the bulging portion 51 in the front-rear direction, and is formed obliquely upward on the front side with respect to the front boss portion 53A.

  The front boss portion 53A is connected to the front boss portion 62A of the vertical wall portion 62 by a bolt 37I, and the rear boss portion 53B is connected to the rear boss portion 62B of the vertical wall portion 62 by a bolt 37I. The upper boss portion 53C is connected to the upper boss portion 62C of the vertical wall portion 62 by a bolt 37I.

  Thereby, the first mount bracket 46 is firmly connected to the chain case 21 by the front boss portion 62A, the rear boss portion 62B, the upper boss portion 62C, and the bracket side connecting portion 61A.

  In FIG. 9, when the chain case 21 is viewed from the outside in the vehicle width direction, the chain case 21 has a width that is higher than the joint 19 (see FIG. 3) between the cylinder block 11 and the cylinder head 12. It is formed wider than the width below 19.

  In the flat portion 21 </ b> A, the front boss portion 53 </ b> A and the rear boss portion 53 </ b> B are formed above the joint portion 19. Thereby, the first mount bracket 46 is disposed on the upper side of the joint portion 19.

  12 and 13, an outer peripheral rib 62D is formed on the outer peripheral portion of the vertical wall portion 62, and the outer peripheral rib 62D protrudes from the vertical wall portion 62 toward the chain case 21 (see FIGS. 7 and 14). The front end and the rear end of the upper wall portion 61 are connected.

  12 and 13, the front boss 62A, the rear boss 62B, and the upper boss 62C are formed on the outer peripheral rib 62D, and the front boss 62A, the rear boss 62B, and the upper boss 62C are The outer peripheral rib 62D is connected to the upper wall portion 61.

  A partition wall 62E is formed in the vertical wall portion 62. The partition wall 62E extends in the vertical direction inward of the outer peripheral rib 62D, and the upper wall portion 61 and the lower end portions of the vertical wall portion 62 (lower outer peripheral ribs). 62D).

  The partition wall 62E extends downward from a central portion in the extending direction (front-rear direction) of the upper wall portion 61, and the bracket-side connecting portion 61A is formed on the base wall side of the upper wall portion 61 with the partition wall 62E as a boundary. An intermediate connecting portion 61B is formed on the tip side.

  The first mount bracket 46 includes a rib forming region 71 provided on one side (front side) with respect to the partition wall 62E, and a rib non-forming region 72 provided on the other side (rear side) with respect to the partition wall 62E. Have

  The rib forming region 71 is a region corresponding to the vertical wall portion 62 extending downward from the intermediate connecting portion 61B with the partition wall 62E as a boundary, and the rib non-forming region 72 is a bracket side connecting portion with the partition wall 62E as a boundary. This is a region corresponding to the vertical wall 62 extending downward from 61A.

  In the rib forming region 71, vertical ribs 62F and 62G and horizontal ribs 62H, 62I, and 62J that protrude from the vertical wall 62 toward the chain case 21 are formed on the vertical wall 62. In the rib non-forming region 72, the vertical wall portion 62 is flat, and no rib is formed on the vertical wall portion 62.

  The vertical ribs 62F and 62G extend in the vertical direction, and the upper ends of the vertical ribs 62F and 62G are connected to the intermediate connecting portion 61B. The vertical rib 62F extends from the lower part of the intermediate connecting portion 61B to the front boss portion 62A, and the vertical rib 62F connects the front boss portion 62A and the intermediate connecting portion 61B.

  The lateral ribs 62H, 62I, and 62J extend in the front-rear direction. The horizontal ribs 62I and 62J connect the partition wall 62E and the vertical rib 62G, and the horizontal rib 62H connects the upper boss portion 62C and the vertical rib 62F. The vertical ribs 62F and 62G and the horizontal ribs 62H, 62I and 62J of the present embodiment constitute the ribs of the present invention.

  In FIG. 9, a first virtual plane 91 extending in the front-rear direction across the front boss portion 53A and the rear boss portion 53B, and a second virtual plane 92 extending in the front-rear direction along the case side connecting portion 51A, The first mount bracket 46 forms a space surrounded by the third virtual plane 93 extending in the vertical direction through the front boss portion 53A and the fourth virtual plane 94 extending in the vertical direction through the rear boss portion 53B. When the bracket arrangement space 96 is arranged, the tensioner connecting portion 34 a of the auto tensioner 34 is arranged in the bracket arrangement space 96.

The first virtual plane 91 is a virtual plane 91a connecting the upper end of the front boss 53A and the upper end of the rear boss 53B, and a virtual connecting the lower end of the front boss 53A and the lower end of the rear boss 53B. What is necessary is just to pass between the planes 91b.
The third virtual plane 93 only needs to pass between the front end and the rear end of the front boss portion 53A, and the fourth virtual plane 94 passes between the front end and the rear end of the rear boss portion 53B. It only has to be.

  The tensioner connecting portion 34a of the present embodiment only needs to be disposed within the range of the bracket placement space 96. However, in this embodiment, the tensioner connecting portion 34a is connected to the front boss portion 53A in the bracket placement space 96. It is arranged in the inter-boss space 97 between the rear boss portion 53B. In other words, the tensioner connecting portion 34a is disposed in the inter-boss space 97 between the virtual plane 91a and the virtual plane 91b.

  That is, the tensioner connecting portion 34a of the present embodiment has a space between the front boss portion 53A and the rear boss portion 53B in the bracket arrangement space 96 surrounded by the front boss portion 53A, the rear boss portion 53B, and the bulging portion 51. Are arranged in the inter-boss space 97.

  The tensioner connecting portion 34a is disposed so as to be biased toward the front boss portion 53A with respect to the fifth virtual plane 95 that crosses the center portion 91c in the extending direction of the first virtual plane 91 in the vertical direction. A central portion 91c in the extending direction of the first virtual plane 91 is a central portion in the front-rear direction between the front boss portion 53A and the rear boss portion 53B. In FIG. 10, the tensioner connecting boss portion 52 is disposed adjacent to the front boss portion 53A in the front-rear direction, and the tensioner connecting boss portion 52 is connected to the front boss portion 53A.

  Accordingly, the rear boss portion 53B and the case side connecting portion 51A of the present embodiment are arranged on the rear side with respect to the fifth virtual plane 95, and the front boss portion 53A and the tensioner connecting portion 34a are provided with the fifth virtual plane. It is arranged on the front side with respect to the plane 95.

  9 and 10, a cylinder portion 63 is disposed above the flat portion 21 </ b> A of the chain case 21 and below the bulging portion 51, and a hydraulic control valve 64 is inserted into the cylinder portion 63. ing. 3, the cylinder part 63 is formed between the chain case 21 and the vertical wall part 62 so as to face the vertical wall part 62 in the vehicle width direction.

  9 and 10, the cylinder portion 63 is formed so as to cross between the bulging portion 51, the tensioner connecting boss portion 52, the front boss portion 53A, and the rear boss portion 53B in the vertical direction.

  Specifically, the cylinder portion 63 and the hydraulic control valve 64 of the present embodiment are opposed to the vertical wall portion 62 and are adjacent to the case-side connecting portion 51A in the vertical direction, and the upper wall portion 61 and the vertical wall It is arranged in a bracket arrangement space 96 surrounded by the part 62, the front boss part 53A and the rear boss part 53B.

  The hydraulic control valve 64 includes a plunger (not shown) inserted into the cylinder portion 63 and a control portion 64A such as an electromagnetic solenoid that protrudes outward from the cylinder portion 63 and drives the plunger.

  Oil is introduced into the cylinder portion 63 from an oil pump (not shown). The cylinder portion 63 communicates with the advance chamber and the retard chamber of the hydraulic actuator 18 through an oil passage (not shown) formed in the chain case 21.

  The plunger is driven by the control unit 64A to switch the direction of oil flow so that the oil supplied from the oil pump to the cylinder unit 63 is supplied to either the advance chamber or the retard chamber. The hydraulic actuator 18 of the present embodiment constitutes a hydraulic device of the present invention.

  The rear boss portion 53 </ b> B is provided at one end portion in the axial direction of the cylinder portion 63, and the cylinder portion 63 is a first virtual portion in which the other axial end portion of the cylinder portion 63 is disposed below the cylinder portion 63. It is inclined with respect to the horizontal plane 98 so as to be away from the plane 91. The first virtual plane 91 of this embodiment constitutes the virtual plane of the present invention.

  The engine 6 of this embodiment is disposed in the engine room 4 such that a cylinder shaft (not shown) is inclined forward with respect to the vertical direction. The case side connecting portion 51A connected to the right side member 2R via the right mount device 9 is formed on a horizontal plane so that the right mount device 9 does not tilt.

  Therefore, the second virtual plane 92 that passes through the case-side connecting portion 51A is formed in a horizontal plane. In FIG. 9, the reason why the horizontal plane 98 different from the second virtual plane 92 is formed is to make it clearer that the cylinder portion 63 is inclined with respect to the horizontal plane 98.

  The front boss portion 53A and the rear boss portion 53B of the present embodiment constitute the case side boss portion of the present invention, and the front boss portion 53A constitutes the first case side boss portion of the present invention. The upper boss portion 53C constitutes the second case side boss portion of the present invention, and the rear boss portion 53B constitutes the third case side boss portion of the present invention.

  The front boss portion 62A constitutes the first boss portion of the present invention, and the upper boss portion 62C constitutes the second boss portion of the present invention. The front boss portion 62A, the rear boss portion 62B, and the upper boss portion 62C constitute the bracket-side boss portion of the present invention.

  In FIG. 11, the rib forming region 71 faces the control portion 64A of the hydraulic control valve 64 in the vehicle width direction, and the rib non-forming region 72 faces the cylinder portion 63 in the vehicle width direction.

  9 and 10, a plurality of reinforcing ribs 65, 66 and 67 are formed on the upper part of the chain case 21, and the reinforcing ribs 65, 66 and 67 cross the cylinder part 63 from the lower part of the bulging part 51. Extending downward.

  Reinforcing ribs 65, 66 extend from the lower part of the bulging part 51 through the bracket placement space 96 to the lower ends 65 a, 66 a below the tensioner connecting boss part 52. The reinforcing ribs 65 and 66 are connected to the outer peripheral surface of the cylinder part 63, and protrude from the flat part 21A and the cylinder part 63 toward the vertical wall part 62 outward in the vehicle width direction.

  The reinforcing rib 67 protrudes from the flat portion 21A and the cylinder portion 63 toward the vertical wall portion 62 outward in the vehicle width direction, and the bulging portion 51, the cylinder portion 63, and the tensioner connecting boss portion 52 are formed of the reinforcing rib. 67.

  The reinforcing ribs 65 and 66 of the present embodiment constitute the first reinforcing rib of the present invention, and the reinforcing rib 67 constitutes the second reinforcing rib of the present invention.

  According to the engine 6 of the present embodiment, the chain case 21 has a front boss portion 53A positioned below the bulging portion 51 and a position lower than the bulging portion 51 and is rearward of the front boss portion 53A. And a rear boss portion 53B located at the same position.

  The mount bracket 46 has an intermediate connecting portion 61B, and a first mount bracket 46 connected to the case-side connecting portion 51A of the bulging portion 51, a second connecting portion connecting the intermediate connecting portion 61B and the shaft member 44. It is divided into a mounting bracket 47.

  The first mount bracket 46 has an upper wall portion 61 whose base end side is coupled to the case side coupling portion 51A, and a lower end portion extending in the downward direction from the upper wall portion 61, and has a front boss portion 53A and a rear boss portion extending in the extending direction. And a vertical wall 62 connected to 53B.

  A first imaginary plane 91 connecting the front boss portion 53A and the rear boss portion 53B, a second imaginary plane 92 extending in the front-rear direction through the case side connecting portion 51A, and an upper and lower direction through the front boss portion 53A A bracket arrangement space 96 in which the first mount bracket 46 is arranged in a space surrounded by the third virtual plane 93 extending in the direction and the fourth virtual plane 94 extending in the vertical direction through the rear boss portion 53B. In this case, the tensioner connecting portion 34 a of the auto tensioner 34 is arranged in the bracket arrangement space 96.

  Thereby, even if the part of the chain case 21 to which the tensioner connecting part 34a is connected is the flat part 21A having a lower rigidity than the uneven part, the rigidity of the flat part 21A is increased by the bulging part 51, the front boss part 53A, and The height can be increased by the rear boss portion 53B.

  In addition, the rigidity of the flat portion 21A can be further increased by connecting the first bracket 46 to the case side connecting portion 51A, the front boss portion 53A, and the rear boss portion 53B of the bulging portion 51.

  For this reason, when the stress (reaction force from the drive belt 27) applied to the flat portion 21A from the tensioner connecting portion 34a of the auto tensioner 34 is applied, the flat portion 21A can be prevented from being bent. As a result, it is possible to prevent the coupling force between the cylinder block 11 and the cylinder head 12 and the chain case 21 from being reduced, and the confidentiality of the engine 6 can be ensured.

  In addition, although the tensioner connection part 34a of a present Example is connected with the flat part 21A of the chain case 21, it may be a recessed part, a convex part, or an uneven part instead of the flat part 21A. Even in such a case, the concave portion, the convex portion, or the concave-convex portion can be prevented from being bent.

  Further, according to the engine 6 of the present embodiment, the tensioner connecting portion 34a is arranged in the inter-boss space 97 between the front boss portion 53A and the rear boss portion 53B in the bracket arrangement space 96. The tensioner connecting portion 34a can be connected to the portion of the flat portion 21A having high rigidity between the front boss portion 53A and the rear boss portion 53B.

  For this reason, when stress is applied to the flat portion 21A from the tensioner connecting portion 34a of the auto tensioner 34, the flat portion 21A can be more effectively prevented from being bent, and the cylinder block 11, the cylinder head 12, the chain case 21, and the like. It can prevent more effectively that the connection force of this falls.

  Further, according to the engine 6 of the present embodiment, the tensioner connecting portion 34a vertically traverses the central portion 91c in the extending direction of the first virtual plane 91 between the front boss portion 53A and the rear boss portion 53B. The fifth imaginary plane 95 is disposed so as to be biased toward the front boss portion 53A.

  Accordingly, the mount load applied to the flat portion 21A from the right mount device 9 via the bulge portion 51 on the rear side with respect to the fifth virtual plane 95, that is, the bulge portion from the right mount device 9 when the engine 6 vibrates. The reaction force applied to 51 and the stress applied to the flat portion 21A from the tensioner connecting portion 34a of the auto tensioner 34 on the front side with respect to the fifth virtual plane 95 are distributed back and forth with the fifth virtual plane 95 as a boundary. It can be transmitted to the flat portion 21A.

  For this reason, it can prevent more effectively that the flat part 21A bends, and can prevent more effectively that the connection force of the cylinder block 11, the cylinder head 12, and the chain case 21 falls.

  Note that the tensioner connecting portion 34a of the present embodiment is disposed so as to be biased toward the front boss portion 53A with respect to the fifth virtual plane 95 that crosses the center portion 91c in the extending direction of the first virtual plane 91 in the vertical direction. However, it is not limited to this.

  For example, when the case side connecting portion 51A is disposed on the front side with respect to the fifth virtual plane 95, the tensioner connecting portion 34a is biased toward the rear boss portion 53B with respect to the fifth virtual plane 95. It may be arranged.

  Further, according to the engine 6 of the present embodiment, the chain case 21 is formed with the tensioner connecting boss portion 52 connected to the tensioner connecting portion 34a, and the tensioner connecting boss portion 52 is formed on the front boss portion 53A. It is connected.

  Accordingly, the rigidity of the flat portion 21A to which the tensioner connecting portion 34a is connected by the tensioner connecting boss portion 52 and the front boss portion 53A can be increased. As a result, the mount load applied to the flat portion 21A from the right mount device 9 via the bulging portion 51 and the stress applied to the flat portion 21A from the tensioner connecting portion 34a of the auto tensioner 34 with the fifth virtual plane 95 as a boundary. Thus, it can be more effectively dispersed before and after and transmitted to the flat portion 21A.

  For this reason, it can prevent more effectively that the flat part 21A bends, and can prevent more effectively that the connection force of the cylinder block 11, the cylinder head 12, and the chain case 21 falls.

  In addition, although the boss | hub part 52 for tensioner connection of a present Example is connected with 53 A of front side bosses, it is not limited to this. When the case side connecting portion 51A is disposed on the front side with respect to the fifth virtual plane 95, and the tensioner connecting portion 34a is disposed on the rear boss portion 53B side with respect to the fifth virtual plane 95. The tensioner connecting boss portion 52 may be connected to the rear boss portion 53B.

  Further, according to the engine 6 of the present embodiment, the cylinder case 63 into which the hydraulic control valve 64 provided in the engine 6 and supplying oil to the hydraulic actuator 18 is inserted is formed in the chain case 21. Is opposed to the vertical wall portion 62 in the vertical direction and crosses between the bulging portion 51 and the tensioner connecting boss portion 52.

  Thereby, the area of the flat surface of the flat portion 21A to which the tensioner connecting portion 34a is connected can be reduced by the arrangement space of the cylinder portion 63, and the rigidity of the flat portion 21A can be increased. For this reason, when stress is applied to the flat portion 21A from the tensioner connecting portion 34a of the auto tensioner 34, the flat portion 21A can be more effectively prevented from being bent, and the cylinder block 11, the cylinder head 12, the chain case 21, and the like. It can prevent more effectively that the connection force of this falls.

  Further, according to the engine 6 of the present embodiment, the reinforcing ribs 65 and 66 extending downward from the lower part of the bulging part 51 across the cylinder part 63 are formed on the chain case 21. The lower end portions 65 a and 66 a extend through the bracket arrangement space 96 to below the tensioner connecting boss portion 52.

Accordingly, the rigidity of the flat portion 21A can be further increased by the reinforcing ribs 65 and 66, and the mount load applied to the flat portion 21A from the right mount device 9 via the bulging portion 51 can be increased by the reinforcing ribs 65 and 66 to the chain case. 21 can be released below.
Further, the stress applied to the flat portion 21A from the tensioner connecting portion 34a of the auto tensioner 34 can be transmitted from the reinforcing ribs 65 and 66 to the bulging portion 51 having high rigidity.

  For this reason, the mount load applied to the flat portion 21A from the right mount device 9 via the bulging portion 51 and the stress applied to the flat portion 21A from the tensioner connecting portion 34a of the auto tensioner 34 are defined with the fifth virtual plane 95 as a boundary. Thus, it is possible to effectively disperse the front and rear, and to prevent the dispersed load from being strongly transmitted to the flat portion 21A. For this reason, it can prevent more effectively that flat part 21A bends.

  Further, according to the engine 6 of the present embodiment, the chain case 21 is formed with the reinforcing rib 67 extending downward from the lower portion of the bulging portion 51 across the cylinder portion 63, and the bulging portion 51 is formed by the reinforcing rib 67. The cylinder part 63 and the tensioner connecting boss part 52 are connected.

  Thus, the rigidity of the flat portion 21A can be further increased by the reinforcing rib 67, and the stress applied to the flat portion 21A from the tensioner connecting portion 34a can be transmitted to the bulging portion 51 having high rigidity through the reinforcing rib 67.

  For this reason, the mount load applied to the flat portion 21A from the right mount device 9 via the bulging portion 51 and the stress applied to the flat portion 21A from the tensioner connecting portion 34a of the auto tensioner 34 are defined with the fifth virtual plane 95 as a boundary. Thus, it can be more effectively suppressed that the dispersed load is more effectively distributed to the front and rear and the dispersed load is strongly transmitted to the flat portion 21A. For this reason, it can prevent more effectively that flat part 21A bends.

  Further, according to the engine 6 of the present embodiment, the cylinder portion 63 and the rear boss portion 53B are connected, so that the rigidity of the flat portion 21A can be further increased by the cylinder portion 63 and the rear boss portion 53B. .

  For this reason, the mounting load applied to the flat portion 21A from the right mount device 9 via the bulging portion 51 and the stress applied to the flat portion 21A from the tensioner connecting portion 34a of the auto tensioner 34 are strongly transmitted to the flat portion 21A. Can be suppressed more effectively. For this reason, it can prevent more effectively that flat part 21A bends.

  When the case side connecting portion 51A is disposed on the front side with respect to the fifth virtual plane 95 and the control portion 64A of the hydraulic control valve 64 is disposed on the rear boss portion 53B side, The cylinder part 63 may be connected.

  Further, the right mount device 9 of the present embodiment is disposed in the boss space 97 between the front boss portion 53 </ b> A and the rear boss portion 53 </ b> B in the bracket placement space 96. If so, it may be placed anywhere.

  For example, as shown by phantom lines in FIG. 15, the tensioner connecting boss 101 is formed in the chain case 21 facing the first mount bracket 46, and the tensioner connecting portion 34 a is connected to the tensioner inside the first mount bracket 46. The boss portion 101 may be connected.

  Further, in the present embodiment, the belt tensioner 31 has an arm 32 and an auto tensioner 34, the auto tensioner 34 has a cylindrical damper 34A that can be expanded and contracted in the axial direction, and the lower end of the damper 34A is an arm. Although it is connected to the tensioner pulley 33 via 32, it is not limited to this. For example, the tensioner pulley 33 may be rotatably connected to the lower end portion of the damper 34A.

  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.

  1 ... vehicle, 2R ... right side member (vehicle body), 5 ... powertrain, 6 ... engine (internal combustion engine), 9 ... right mounting device (mounting device), 18 ... Hydraulic actuator, 11 ... Cylinder block (engine body), 12 ... Cylinder head (engine body), 15 ... Crankshaft, 21 ... Chain case (case member), 26 .. Generator, 27 ... Drive belt, 31 ... Belt tensioner (tensioning member), 32 ... Arm, 33 ... Tensioner pulley, 34 ... Auto tensioner (tensioner member), 34a ... Tensioner connecting portion, 36 ... body panel (vehicle body), 41 ... vibration-proof mounting member, 44 ... shaft member (mounting side connecting portion), 45 ... mount bracket, 46 ... first Mount bracket, 47 ... second mount bracket, 51 ... bulge , 51A ... case side connecting portion, 52,101 ... tensioner connecting boss portion, 53A ... front boss portion, 53B ... rear boss portion, 61 ... upper wall portion, 61B .. Intermediate connecting part, 63 ... Cylinder part, 64 ... Hydraulic control valve, 64A ... Control part, 65, 66 ... Reinforcement rib, 65, 66 ... Reinforcement rib (first reinforcement rib) ), 67... Reinforcing rib (second reinforcing rib), 91... First imaginary plane, 91 a... Center part (center part in the direction in which the first imaginary plane extends), 92. 2nd virtual plane, 93 ... 3rd virtual plane, 94 ... 4th virtual plane, 95 ... 5th virtual plane

Claims (8)

An engine body having a crankshaft;
A case member coupled to an end of the engine body;
An anti-vibration mount member provided on the vehicle body side, having a mount-side coupling portion;
Bulges from the case member toward the anti-vibration mount member, and a bulge portion having a case-side connecting portion at the top;
A drive belt provided below the bulging portion and transmitting power from the crankshaft to an auxiliary machine;
A tension applying member that is provided below the bulging portion and applies tension to the drive belt;
A mounting bracket for connecting the case side connecting portion and the mount side connecting portion;
The tension applying member is a tensioner pulley that contacts the drive belt, a tensioner connecting portion provided at one end is connected to the case member, and the tensioner pulley is provided on the other end side, and the tensioner pulley A vehicle internal combustion engine comprising a tensioner member that presses the drive belt against the drive belt,
The case member includes a front boss portion positioned below the bulging portion, and a rear boss positioned below the bulging portion and positioned rearward of the front boss portion in the vehicle front-rear direction. Part is formed,
The mount bracket has an intermediate connecting portion and is divided into a first mount bracket connected to the case side connecting portion and a second mount bracket connecting the intermediate connecting portion and the mount side connecting portion. Has been
The first mounting bracket includes a top wall portion whose base end side is coupled to the case side coupling portion, a lower end portion extending in a downward direction from the upper wall portion, and a lower end portion extending in the extending direction, the front boss portion and the rear boss portion. And a vertical wall portion connected to the
A first virtual plane extending in the front-rear direction of the vehicle across the front boss portion and the rear boss portion, a second virtual plane extending in the front-rear direction of the vehicle along the case-side connecting portion, and the front side The first mount bracket surrounds a space surrounded by a third virtual plane extending in the vertical direction of the vehicle through the boss portion and a fourth virtual plane extending in the vertical direction of the vehicle through the rear boss portion. An internal combustion engine for a vehicle, wherein the tensioner connecting portion is arranged in the bracket arrangement space when the bracket arrangement space is arranged.   2. The vehicle internal combustion engine according to claim 1, wherein the tensioner connecting portion is disposed in a space between the bosses between the front boss portion and the rear boss portion in the bracket arrangement space. . Either one of the front boss portion and the rear boss portion is provided away from the case side connecting portion in the front-rear direction,
The tensioner connecting portion is configured so that the front boss portion is in relation to a fifth virtual plane that vertically crosses a center portion in the extending direction of the first virtual plane between the front boss portion and the rear boss portion. The vehicle internal combustion engine according to claim 1, wherein the vehicle internal combustion engine is arranged so as to be biased toward one side of the rear boss portion. The case member is formed with a tensioner coupling boss coupled to the tensioner coupling.
The vehicle internal combustion engine according to any one of claims 1 to 3, wherein the tensioner connecting boss portion is connected to the front boss portion or the rear boss portion. The case member is formed with a cylinder portion into which a hydraulic control valve for supplying oil to a hydraulic device provided in the internal combustion engine is inserted,
5. The internal combustion engine for a vehicle according to claim 4, wherein the cylinder portion faces the vertical wall portion and traverses between the bulging portion and a tensioner connecting boss portion. Reinforcing ribs extending downward across the cylinder part from the lower part of the bulging part are formed on the case member,
6. The internal combustion engine for a vehicle according to claim 4, wherein a lower end portion of the reinforcing rib passes through the bracket arrangement space and extends below the tensioner connecting boss portion. When the reinforcing rib is the first reinforcing rib, the case member is formed with a second reinforcing rib extending downward from the lower portion of the bulging portion across the cylinder portion,
The vehicular internal combustion engine according to claim 6, wherein the bulging portion, the cylinder portion, and the tensioner connecting boss portion are connected by the second reinforcing rib.   The vehicle internal combustion engine according to any one of claims 5 to 7, wherein the cylinder portion and the front boss portion or the rear boss portion are connected to each other.

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