JP2010019162A - Engine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems of conventional engines that necessity of securing a space to dispose a counter shaft and a pair of right/left counter pulleys and a space to wind a belt around a crank pulley and an input pulley via the counter pulleys restricts downsizing of a vehicle, and that necessity of winding the belt around the respective pulleys after mounting the engine to the vehicle makes the working efficiency poor. <P>SOLUTION: The engine is equipped with a gear box 41 accommodating therein an input shaft 34 disposed in parallel with the crank shaft 24 below the crank shaft 24 for receiving power from the crank shaft 24 via a belt mechanism 33, a first output shaft 35 for outputting power from the input shaft 34 and disposed perpendicular to the crank shaft 24, and a bevel gear 36 for transmitting the power of the input shaft 34 to the first output shaft 35. The gear box 41 is disposed on a flywheel 25 side of the engine 5 and is mounted to the engine 5 via a bracket 151. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technique for an engine having a crankshaft in a substantially horizontal direction, and more particularly to a technique for transmitting the power of the crankshaft to a shaft arranged in a direction perpendicular to the crankshaft.

2. Description of the Related Art Conventionally, an engine technology for transmitting motive power of a crankshaft to a shaft arranged in a direction perpendicular to the crankshaft has been publicly known (see, for example, Patent Document 1).
Here, a vehicle including an engine according to a conventional example will be described with reference to FIG.
As shown in FIG. 10, the vehicle 900 is an Ackerman-steered lawn mower, an engine 905 having a crankshaft 924 in the front-rear horizontal direction, and an input shaft 906 arranged in a direction perpendicular to the crankshaft 924 And a mower 907. A crank pulley 924 a is fixed to the crank shaft 924 of the engine 905, and an input pulley 906 a is fixed to the input shaft 906 of the mower 907. Further, a counter shaft 980 is arranged in the left and right horizontal direction below the engine 905, and a pair of left and right counter pulleys 980a are fixed to the counter shaft 980. The belt 981 is wound around the crank pulley 924a, the pair of left and right counter pulleys 980a, and the input pulley 906a, and the power of the crankshaft 924 of the engine 905 is supplied to the crank pulley 924a, the belt 981, the counter pulley 980a, the belt 981, and the input pulley. 906a is transmitted to the input shaft 906, and the rotary blade 907a of the mower 907 is driven.
Japanese Utility Model Publication No. 60-10427

  However, the conventional engine 905 secures a space for arranging the counter shaft 980 and the pair of left and right counter pulleys 980a, and a space for winding the belt 981 around the crank pulley 924a and the input pulley 906a via the counter pulley 980a. Since this is necessary, there is a problem that it becomes a limitation in reducing the size of the vehicle. Further, since the belt 981 needs to be wound around the pulleys 924a, 980a, and 906a after the engine 905 is attached to the vehicle, there is a problem that work efficiency is poor.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

  That is, according to the first aspect of the present invention, the engine includes a crankshaft disposed in a substantially horizontal direction and a flywheel disposed on one side of the engine, and is parallel to the crankshaft below the crankshaft. An input shaft that receives power from the crankshaft via a first power transmission means, an output shaft that outputs power from the input shaft and is disposed perpendicular to the crankshaft, and the output shaft And a second power transmission means for transmitting the power of the input shaft, and the power transmission case is disposed on the flywheel side of the engine and attached to the engine via a bracket. is there.

  According to a second aspect of the present invention, the starter motor for starting the engine is attached to the bracket.

  According to a third aspect of the present invention, a clutch for connecting and disconnecting power from the output shaft is provided, and the clutch can be attached to the power transmission case.

  According to a fourth aspect of the present invention, a clutch for connecting / disconnecting power from the output shaft is provided, and the clutch can be attached to the bracket.

  According to a fifth aspect of the present invention, the power transmission case is arranged eccentrically in the horizontal direction with respect to the crankshaft.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect of the present invention, since the power transmission case is made compact and the engine becomes compact, the vehicle can be easily downsized. And since a power transmission case can be previously attached to an engine and modularized, the efficiency of attachment work improves. Further, when the driving target is disposed on the flywheel side of the engine, the transmission distance from the output shaft to the driving target can be shortened, so that power from the output shaft can be efficiently transmitted to the driving target.

  According to the second aspect of the present invention, the bracket for exclusive use of the starter motor or the like is not required, and the number of parts is reduced, so that the cost can be easily reduced.

  According to the third aspect, since the transmission / cutoff of power from the output shaft to the drive target can be switched, the convenience of the engine is improved. And since a clutch can be previously attached to an engine and modularized, the efficiency of attachment work improves. Further, by using the power transmission case, the clutch can be attached to the engine with a simple configuration.

  According to the fourth aspect of the present invention, transmission / cutoff of power from the output shaft to the drive target can be switched, so that the convenience of the engine is improved. And since a clutch can be previously attached to an engine and modularized, the efficiency of attachment work improves. Further, by using the bracket, the clutch can be attached to the engine with a simple configuration.

  According to the fifth aspect of the present invention, the engine is made compact by avoiding the flywheel and disposing the power transmission case as high as possible, so that the vehicle can be easily downsized.

Next, the best mode for carrying out the invention will be described.
FIG. 1 is a side view showing a vehicle including an engine according to a first embodiment of the present invention, FIG. 2 is a side view showing an engine according to the first embodiment of the present invention, and FIG. 3 is a side view showing a gear box. 4 is a side view showing a state in which an electromagnetic clutch is attached to the gear box, and FIG. 5 is a rear view showing a state in which the gear box is attached to the engine via the bracket according to the first embodiment of the present invention. 6 is a rear view showing the bracket according to the first embodiment of the present invention, FIG. 7 is a rear view showing a state in which the gear box is attached to the engine via the bracket according to the second embodiment of the present invention, 8 is a rear view showing a bracket according to a second embodiment of the present invention, FIG. 9 is a side view showing a state in which an electromagnetic clutch is attached to the bracket according to the third embodiment of the present invention, and FIG. 10 is a conventional example. A vehicle equipped with an engine according to Is the side view.

First, the overall configuration of a vehicle 100 including the engine 5 according to the first embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 1, a vehicle 100 is an Ackermann-steered lawn mower, and is supported by a vehicle frame 2, a rear axle drive device 3 supported on the rear portion of the vehicle frame 2, and a front portion of the vehicle frame 2. A front axle support device 4, an engine 5 supported by the vehicle frame 2 between the rear axle drive device 3 and the front axle support device 4, and a mower 7 hung up and down below the vehicle frame 2. I have.

  The rear axle drive device 3 houses a hydraulic motor 8, and the hydraulic motor 8 is fluidly connected so as to be driven by a hydraulic pump (not shown). An input shaft 83 of the hydraulic pump protrudes upward from the rear axle drive device 3. A pulley 83 a is fixed to the input shaft 83.

  The engine 5 is housed in the hood 11, a handle 12 is extended from the dashboard immediately after the hood 11, and a radiator 14 is mounted on the vehicle frame 2 immediately before the engine 5. In the bonnet 11, a reservoir tank 17 for supplying hydraulic oil to a hydraulic cylinder or the like is disposed behind the engine 5.

  Further, a rear cover 15 is mounted on the rear portion of the vehicle frame 2, and a driver seat 16 is mounted on the upper surface of the rear cover 15. A rear axle driving device 3 is disposed in the rear cover 15.

  The mower 7 is disposed below the vehicle frame 2 between the rear wheel 18 driven by the rear axle drive device 3 and the front wheel 19 supported by the front axle support device 4. The left and right mower hangers 20 are connected to the front end portions of the left and right side plates of the vehicle frame 2, respectively, and the mower hangers 20 are connected to the front ends of the mowers 7 through the link rods 20a. It is designed to be suspended. From the mower 7, the input shaft 6 protrudes upward. A rotary blade 7 a is fixed to the lower end portion of the input shaft 6, and a pulley 6 a is fixed to the upper end portion of the input shaft 6.

Next, the engine 5 according to the first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 2, the engine 5 includes an oil pan 21 at the bottom, a cylinder block 22 at the top of the oil pan 21, and a cylinder head 23 at the top of the cylinder block 22.

  A crankshaft 24 is installed in the front and rear horizontal direction in the cylinder block 22, and front and rear end portions of the crankshaft 24 protrude from front and rear surfaces of the cylinder block 22, respectively. A second crank pulley 24b is fixed to the front end portion of the crankshaft 24, and a flywheel 25 and a first crank pulley 24a are fixed to the rear end portion of the crankshaft 24 in order from the rear. .

  The cooling fan 13 is disposed above the crankshaft 24. A pulley 26a is fixed to the fan shaft 26 of the cooling fan 13, and a cooling water pump 27 is attached thereto. An alternator (not shown) is disposed on the right side of the cooling fan 13, and a pulley (not shown) is fixed to the alternator shaft.

  Then, one belt 30 is wound around the second crank pulley 24b of the crankshaft 24, the pulley 26a of the fan shaft 26, and the pulley of the alternator shaft to constitute an auxiliary machine driving belt mechanism 53. The power from the crankshaft 24 is transmitted via the belt 30, and the cooling fan 13, the cooling water pump 27, and the alternator are driven.

  A gear case 32 that houses a gear group (not shown) for driving the fuel injection pump 31 and the camshaft (not shown) is disposed on the front side of the cylinder head 23.

  Further, a notch 21 a is formed at the lower rear side of the oil pan 21. The notch portion 21a is a space formed by cutting the rear lower corner portion of the oil pan 21 into a substantially rectangular shape in a side view, and a gear box 41 serving as a power transmission case is disposed in the notch portion 21a. Yes.

  The gear box 41 is disposed at a substantially central portion on the left and right sides in the cutout portion 21 a of the oil pan 21. In other words, the gear box 41 is disposed at a substantially central portion on the left and right sides of the engine 5. The gear box 41 includes an input shaft 34 to which power from the crankshaft 24 is input via the belt mechanism 33, a first output shaft 35 that outputs power from the input shaft 34, and the first output shaft 35. A bevel gear 36 (see FIG. 3) for transmitting the power of the input shaft 34 is internally provided. The gear box 41 is attached to the rear surface of the engine 5 via a bracket 151.

  The input shaft 34 is disposed below the crankshaft 24 and parallel to the crankshaft 24 (front-rear horizontal direction). The input shaft 34 is housed in the gear box 41 so as to protrude from the rear portion of the gear box 41, and is rotatably supported by the gear box 41 via a bearing (see FIG. 3).

  An input pulley 34 a is fixed to the rear end portion of the input shaft 34. A cooling fan 42 (see FIG. 3) is attached to the front side of the input pulley 34a, and the cooling pan is blown forward to efficiently cool the oil pan 21 and the like.

  A belt mechanism 33 is configured by winding a belt 39 around the input pulley 34 a of the input shaft 34 and the first crank pulley 24 a of the crankshaft 24. A tension pulley 40 (see FIG. 5) that is a tension member that applies tension to the belt 39 is in contact with the inner peripheral side of the belt 39. The tension pulley 40 is urged to the right by an elastic member (not shown) such as a spring to apply tension to the belt 39.

  The first output shaft 35 is disposed vertically (up and down direction) with respect to the crankshaft 24. That is, the first output shaft 35 is also arranged perpendicular to the input shaft 34. The first output shaft 35 is disposed at a substantially central portion on the left and right sides of the gear box 41 and is disposed within a front-rear range of the engine 5. That is, the first output shaft 35 is disposed within the projection range of the engine 5 in plan view. The first output shaft 35 is housed in the gear box 41 so as to protrude from the lower portion of the gear box 41, and is rotatably supported by the gear box 41 via a bearing (see FIG. 3).

  As shown in FIG. 3, the bevel gear 36 is for transmitting the power of the input shaft 34 to the first output shaft 35. In the gear box 41, one bevel gear 36 is fixed to the end portion (front end portion) of the input shaft 34, and the other bevel gear 36 that meshes with the bevel gear 36 is connected to the end portion (upper end portion) of the first output shaft 35. It is fixed.

  A first output pulley 35 a serving as a first output member is fixed to the lower end portion of the first output shaft 35 by key fitting, and a second output shaft 37 is detachable on the same axis as the first output shaft 35. It is connected to. A belt 82 is wound around the first output pulley 35 a and the pulley 83 a of the rear axle drive device 3.

  The second output shaft 37 is provided with a second output pulley 37 a serving as a second output member via an electromagnetic clutch 38. A belt 81 is wound around the second output pulley 37 a and the pulley 6 a of the mower 7. The electromagnetic clutch 38 is a clutch that switches between transmission and interruption of power from the second output shaft 37 to the second output pulley 37a. Note that the clutch is not limited to an electromagnetic clutch, and may be, for example, a hydraulic clutch.

  With such a configuration, the power of the crankshaft 24 of the engine 5 is, as shown in FIGS. 1 and 2, the first crank pulley 24a, the belt 39, the input pulley 34a, the input shaft 34, the bevel gear 36, the first output shaft. 35. The power of the first output shaft 35 is transmitted to the first output pulley 35a, the belt 82, the pulley 83a, and the input shaft 83 to drive the hydraulic pump (not shown). The power of the first output shaft 35 is transmitted to the second output shaft 37, the second output pulley 37a, the belt 81, the input pulley 6a, and the input shaft 6 to drive the rotary blade 7a of the mower 7.

  As shown in FIG. 4, boss portions 54 for attaching the electromagnetic clutch 38 are provided on the left and right side surfaces of the lower portion of the gear box 41. A screw groove is formed on the inner peripheral surface of the boss portion 54. The electromagnetic clutch 38 has a bolt hole 38a at a position overlapping the boss portion 54 in plan view.

  With such a configuration, the bolt 44 is screwed from below the bolt hole 38a in a state where the boss portion 54 of the gear box 41 and the bolt hole 38a of the electromagnetic clutch 38 are aligned in plan view, whereby the electromagnetic clutch 38 is inserted. Can be attached to the gear box 41.

  As shown in FIGS. 5 and 6, the bracket 151 is a plate-like member for attaching the gear box 41 to the rear surface of the engine 5 (the side where the flywheel 25 is disposed on the front and rear surfaces of the engine 5). The bracket 151 is securely and detachably attached to the rear surface (see FIG. 2) of the cylinder block 22 by a plurality (eight in this embodiment) of bolts 52. Four bolts 52 are arranged on the left and right sides of the crankshaft 24. The bracket 151 extends vertically from the crankshaft 24, the upper left portion extends leftward, and the right portion is formed in a substantially arc shape when viewed from the back.

  A through hole 87 through which the crankshaft 24 passes is opened at a substantially central portion of the bracket 151. An attachment hole 84 for attaching the gear box 41 is opened below the through hole 87 and below the bracket 151. The mounting hole 84 is formed in a shape (substantially circular) in which the gear box 41 is fitted. The mounting hole 84 is arranged at a position where the left-right center coincides with the crankshaft 24, and thus the gear box 41 is arranged at a position where the left-right center (input shaft 34) coincides with the crankshaft 24. The gear box 41 is securely and detachably attached to the front surface of the bracket 151 by a plurality of (four in this embodiment) bolts 61 in a state of being attached to the attachment hole 84.

  In addition, a long hole 85 is opened in the left-right direction at the right part of the bracket 151 (between the upper and lower sides of the crankshaft 24 and the input shaft 34), and the pulley shaft 40a of the tension pulley 40 slides in the long hole 85. Arranged freely. The tension pulley 40 serves as a tension member that applies tension to the belt 39 and is biased rightward by an elastic member (not shown) such as a spring while being in contact with the inner peripheral side of the belt 39. .

  An attachment hole 86 for attaching the starter motor 71 for starting the engine 5 is opened in the upper left portion of the bracket 151 (upwardly obliquely to the left of the crankshaft 24). The mounting hole 86 is formed in a shape (substantially circular) into which the starter motor 71 is fitted.

  As described above, the engine 5 according to the first embodiment is the engine 5 including the crankshaft 24 arranged in a substantially horizontal direction and the flywheel 25 arranged on one side of the engine 5, and the crankshaft An input shaft 34 that is arranged in parallel to the crankshaft 24 and receives power from the crankshaft 24 via a belt mechanism 33, and outputs power from the input shaft 34. The crankshaft A gear box 41 having a first output shaft 35 disposed perpendicularly to the first output shaft 35 and a bevel gear 36 for transmitting the power of the input shaft 34 to the first output shaft 35. The engine 5 is disposed on the flywheel 25 side and attached to the engine 5 via a bracket 151. With such a configuration, the gear box 41 is configured to be compact and the engine 5 is compact, so that the vehicle can be easily downsized. And since the gear box 41 can be attached to the engine 5 in advance and modularized, the efficiency of the attachment work is improved. Further, when the driving target is arranged on the flywheel 25 side of the engine 5, the transmission distance from the first output shaft 35 to the driving target can be shortened, so that the power from the first output shaft 35 can be efficiently transmitted to the driving target. . Furthermore, since the gear box 41 has the same vibration system as that of the engine 5, it is possible to simplify the anti-vibration measures, so that cost reduction is easy.

  Further, an electromagnetic clutch 38 for connecting / disconnecting power from the first output shaft 35 is provided, and the electromagnetic clutch 38 can be attached to the gear box 41. With such a configuration, transmission / cutoff of power from the first output shaft 35 to the drive target can be switched, so that the convenience of the engine 5 is improved. And since the electromagnetic clutch 38 is previously attached to the engine 5 and can be modularized, the efficiency of attachment work is improved. Further, by using the gear box 41, the electromagnetic clutch 38 can be attached to the engine 5 with a simple configuration. Furthermore, since the electromagnetic clutch 38 has the same vibration system as that of the engine 5, the anti-vibration measures can be simplified, so that the cost can be easily reduced.

  The starter motor 71 for starting the engine 5 is attached to the bracket 151. With such a configuration, a bracket or the like dedicated to the starter motor 71 is not required, and the number of parts is reduced, so that cost reduction is easy.

  Next, an engine 5 according to a second embodiment of the present invention will be described with reference to FIGS. 7 and 8, members having the same reference numerals as those in the first embodiment have the same configurations as those in the first embodiment, and thus detailed description thereof is omitted.

  The engine 5 according to the second embodiment is different from the engine 5 according to the first embodiment in the following points. That is, in the engine 5 according to the second embodiment, as shown in FIGS. 7 and 8, the gear box 41 is attached to the rear surface of the engine 5 via the bracket 251. The bracket 251 is a plate-like member formed in a substantially inverted trapezoidal shape when viewed from the back, and an upper right portion extends upward to form an arm portion 251a. The bracket 251 is securely and detachably attached to the rear surface (see FIG. 2) of the cylinder block 22 with a plurality of bolts 52 (five in this embodiment).

  An attachment hole 84 for attaching the gear box 41 is opened in the lower right portion of the bracket 251. The mounting hole 84 is disposed at a position eccentric to the left or right side (right side in this embodiment) with respect to the crankshaft 24, thereby avoiding the flywheel 25 and disposing the gear box 41 as high as possible. Thus, the engine 5 can be configured compactly. That is, the height of the engine 5 is lowered so that the minimum ground clearance of the vehicle can be lowered when the engine 5 is mounted on the vehicle.

  In addition, a long hole 85 is opened in the lower left diagonal direction in the lower left portion of the bracket 251, and the pulley shaft 40 a of the tension pulley 40 is slidably disposed in the long hole 85. The tension pulley 40 is biased to the lower left by an elastic member (not shown) such as a spring while being in contact with the inner peripheral side of the belt 39.

  A starter motor bracket 73 is disposed on the upper left side of the crankshaft 24. The starter motor bracket 73 is a plate-like member for attaching the starter motor 71 to the rear surface of the engine 5. An attachment hole 86 is opened in the starter motor bracket 73, and the starter motor 71 is attached to the attachment hole 86. The starter motor bracket 73 is securely and detachably attached to the rear surface of the cylinder block 22 by a plurality of (two in this embodiment) bolts 72.

  Here, the starter motor 71 and the alternator are arranged on the left side with respect to the crankshaft 24, while the gear box 41 is arranged on the right side with respect to the crankshaft 24. That is, the gear box 41 is disposed on the opposite side to the engine auxiliary equipment (starter motor 71, alternator, etc.) that is a heavy object with the crankshaft 24 interposed therebetween. Thereby, since the left-right weight balance of the engine 5 is stabilized, the vibration of the engine 5 is reduced and the balance of the vehicle is stabilized.

  As described above, in the engine 5 according to the second embodiment, the gear box 41 is arranged eccentrically with respect to the crankshaft 24 in the horizontal direction (left and right). With such a configuration, the engine 5 becomes compact by avoiding the flywheel 25 and disposing the gear box 41 as high as possible, so that the vehicle can be easily downsized.

  Next, an engine 5 according to a third embodiment of the present invention will be described with reference to FIG. In FIG. 9, members having the same reference numerals as those in the first embodiment have the same configurations as those in the first embodiment, and thus detailed description thereof is omitted.

  The engine 5 according to the third embodiment is different from the engine 5 according to the first embodiment in the following points. That is, in the engine 5 according to the third embodiment, as shown in FIG. 9, instead of providing the boss portion 54 in the gear box 41, a mounting seat 74 for mounting the electromagnetic clutch 38 is provided in the lower portion of the bracket 151. Yes. The mounting seat 74 is formed in a substantially L shape in a side view, and receives the electromagnetic clutch 38 at an L-shaped horizontal portion. Specifically, the shape of the mounting seat 74 is bent from the lower end portion of the bracket 151 along the corner portion of the first output pulley 35a and extends rearward (horizontal direction) (extends leftward in FIG. 9). ) And then bent downward (vertical direction) and then bent substantially vertically toward the electromagnetic clutch 38 and extended forward (horizontal direction) (extending to the right in FIG. 9). )is doing.

  The mounting seat 74 is molded integrally with the bracket 151. Thereby, since the attachment work to the bracket 151 of the attachment seat 74 is unnecessary, the efficiency of the attachment work is improved. In addition, by integrally molding, the number of parts is reduced, so that cost reduction is easy. The mounting seat 74 can be molded separately from the bracket 151 and attached to the lower portion of the bracket 151.

  A plurality (two in this embodiment) of bolt holes 74a are formed on the left and right sides of the mounting seat 74 (horizontal portion). On the other hand, the electromagnetic clutch 38 is formed with a bolt hole 38a at a position overlapping the bolt hole 74a in plan view. With such a configuration, the left and right sides of the electromagnetic clutch 38 are placed on the horizontal portion of the mounting seat 74, and the bolt hole 74a of the mounting seat 74 and the bolt hole 38a of the electromagnetic clutch 38 are aligned in plan view. The electromagnetic clutch 38 can be attached to the attachment seat 74 by screwing the bolt 44 from below the bolt hole 38a.

  As described above, the engine 5 according to the third embodiment includes the electromagnetic clutch 38 that connects and disconnects the power from the first output shaft 35, and the electromagnetic clutch 38 can be attached to the bracket 151 (mounting seat 74). There is something. With such a configuration, transmission / cutoff of power from the first output shaft 35 to the drive target can be switched, so that the convenience of the engine 5 is improved. And since the electromagnetic clutch 38 is previously attached to the engine 5 and can be modularized, the efficiency of attachment work is improved. Further, by using the bracket 151, the electromagnetic clutch 38 can be attached to the engine 5 with a simple configuration. Furthermore, since the electromagnetic clutch 38 has the same vibration system as that of the engine 5, the anti-vibration measures can be simplified, so that the cost can be easily reduced.

The side view which showed the vehicle provided with the engine which concerns on 1st Example of this invention. 1 is a side view showing an engine according to a first embodiment of the present invention. Side surface sectional drawing which showed the gear box. The side view which showed the state which attached the electromagnetic clutch to the gear box. The rear view which showed the state which attached the gear box to the engine via the bracket which concerns on 1st Example of this invention. The rear view which showed the bracket which concerns on 1st Example of this invention. The rear view which showed the state which attached the gear box to the engine via the bracket which concerns on 2nd Example of this invention. The rear view which showed the bracket which concerns on 2nd Example of this invention. The side view which showed the state which attached the electromagnetic clutch to the bracket which concerns on the 3rd Example of this invention. The side view which showed the vehicle provided with the engine which concerns on a prior art example.

Explanation of symbols

5 Engine 24 Crankshaft 25 Flywheel 33 Belt mechanism (first power transmission means)
34 Input shaft 35 First output shaft (output shaft)
36 Bevel gear (second power transmission means)
38 Electromagnetic clutch (clutch)
41 Gearbox (power transmission case)
71 Starter motor 151 Bracket 251 Bracket

Claims (5)

  An engine comprising a crankshaft disposed in a substantially horizontal direction and a flywheel disposed on one side of the engine, wherein the engine is disposed below the crankshaft and in parallel with the crankshaft, and a first power transmission An input shaft that receives power from the crankshaft via the means, an output shaft that outputs the power from the input shaft, and is arranged perpendicular to the crankshaft, and transmits the power of the input shaft to the output shaft An engine comprising: a second power transmission unit configured to house the power transmission case, the power transmission case disposed on the flywheel side of the engine, and attached to the engine via a bracket.   The engine according to claim 1, wherein the starter motor for starting the engine is attached to the bracket.   The engine according to claim 1, further comprising a clutch that connects and disconnects power from the output shaft, the clutch being attachable to the power transmission case.   The engine according to claim 1, further comprising a clutch that connects and disconnects power from the output shaft, the clutch being attachable to the bracket.   The engine according to any one of claims 1 to 4, wherein the power transmission case is arranged in an eccentric manner in a horizontal direction with respect to the crankshaft.

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