EP2631447A1 - Sattelfahrzeug - Google Patents

Sattelfahrzeug Download PDF

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Publication number
EP2631447A1
EP2631447A1 EP13155880.1A EP13155880A EP2631447A1 EP 2631447 A1 EP2631447 A1 EP 2631447A1 EP 13155880 A EP13155880 A EP 13155880A EP 2631447 A1 EP2631447 A1 EP 2631447A1
Authority
EP
European Patent Office
Prior art keywords
vehicle
pipe
radiator
engine
saddle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13155880.1A
Other languages
English (en)
French (fr)
Other versions
EP2631447B1 (de
Inventor
Hayato Takei
Keisuke Kishikawa
Masatsugu Tanaka
Takayuki Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of EP2631447A1 publication Critical patent/EP2631447A1/de
Application granted granted Critical
Publication of EP2631447B1 publication Critical patent/EP2631447B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F01P2003/185—Arrangements or mounting of liquid-to-air heat-exchangers arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2050/00—Applications
    • F01P2050/16—Motor-cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler

Definitions

  • the present invention relates to a saddle-ride type vehicle equipped with a radiator in front of an engine.
  • a radiator is attached to a water-cooled engine mounted on a saddle-ride type vehicle. It is known that the radiator is disposed in the front portion of a vehicle into which the airflow resulting from the running vehicle is likely to move (see e.g. Patent Document 1 Japanese Patent Laid-Open No. 2005-271636 ( Figs. 1 and 2 )).
  • an engine E is mounted on a main frame 1 of a saddle-ride type vehicle.
  • a parenthetic symbol denotes a symbol described in Patent Document 1. The same holds true for the following.
  • a radiator 2 is disposed in front of and above the engine E.
  • the radiator 2 is disposed on each of the right and left sides in a vehicle-width direction as shown in Fig. 2 in Patent Document 1.
  • a cooling water inlet pipe 18 extends upward from a cooling water jacket outlet 20 of the engine shown by an imaginary line.
  • the cooling water inlet pipe 18 is bifurcated into two inlet branch pipes 17.
  • the inlet branch pipes 17 are each connected to an inlet side cooling water tank 6 of the radiator 2.
  • an outlet pipe 21 extends from each of the outlet side cooling water tanks 7.
  • the two outlet branch pipes 21 are converged into a cooling water outlet pipe 22 in a lower portion of the vehicle.
  • the cooling water outlet pipe 22 is connected to a cooling water jacket inlet of the engine via a water pump.
  • the vehicle-widthwise dimension of the radiator 2 may be increased. Such a case will have an influence on a bank angle.
  • the radiator 2 is extended downward, the cooling water output pipe 22 disposed below the radiator 2 comes close to the ground surface. Since the ground height has a limit, also there is a limit to extend the radiator 2 downward.
  • Patent Document 1 has difficulty in enlarging the radiator 2. Thus, a structure substituting for the structure of Patent Document 1 is required.
  • the invention is characterized in that in a saddle-ride type vehicle equipped with radiators in front of an engine, the vehicle includes an upper radiator disposed above a front wheel and in front of the engine and a lower radiator disposed behind the upper radiator and between the front wheel and the engine;
  • the upper radiator includes an upper radiator core extending in a vehicle-width direction, an upper upstream tank connected to one of the left and right, in the vehicle-width direction, of the upper radiator core and adapted to store water supplied to the upper radiator core, and an upper downstream tank connected to the other of the left and right, in the vehicle-width direction, of the upper radiator core and adapted to store water cooled by the upper radiator core;
  • the lower radiator includes a lower radiator core extending in the vehicle-width direction, a lower upper stream tank connected to one of the left and right, in the vehicle-width direction, of the lower radiator core and adapted to store water supplied to the lower radiator core, and a lower downstream tank connected to the other of the left and right, in the vehicle-width direction,
  • the invention may also be characterized in that an inlet of the upper return pipe is connected to an upper rear surface of the upper downstream tank; and an oil cooler adapted to cool engine oil circulating inside the engine is disposed on the other of the left and right in the vehicle-width direction, and as viewed from the side of the vehicle, is disposed below the upper return pipe while extending along a rear surface of the upper radiator.
  • the invention may also be characterized in that the saddle-ride type vehicle includes, on one of the left and right in the vehicle-width direction, an upper supply pipe extending from the engine to the upper upstream tank and adapted to supply the water to the upper stream tank and an lower supply pipe extending from a lower portion of the upper upstream tank to the lower upstream tank and adapted to supply the water to the lower upstream tank.
  • the saddle-ride type vehicle includes a body frame supporting the engine, the body frame includes a head pipe, left and right main frames extending toward the rearward downside of the vehicle from the head pipe and disposed right and left, and a seat rail extending toward the rear of the vehicle from a rear portion of the main frames, the upper radiator is disposed, as viewed from the side of the vehicle, below and adjacently to the main frames, and the upper return pipe extends in an extending direction of the main frames at a position below the main frames, further extending below the vehicle along a front surface of the crankcase of the engine, and is connected to a confluence portion with the lower return pipe.
  • the invention may also be characterized in that the main frames are truss frames formed by welding a plurality of pipes, and the upper return pipe has a diameter generally equal to a diameter of the pipe and is disposed to overlap the main frames in the back and forth direction of the vehicle.
  • the invention may also be characterized in that the lower radiator 50 is disposed behind the front wheel 13 and below a cylinder 65 of the engine 19 tilting toward the front of the vehicle, the lower radiator core 51 is provided at a rear portion thereof with an air-cooling fan 115 for forced-cooling the water, and an exhaust pipe 25 extending toward the downside of the vehicle from a lower surface of the cylinder 65 passes the back of the air-cooling fan 115 and extends toward the rear of the vehicle as viewed from the side of the vehicle.
  • the invention may also be characterized in that the lower radiator is disposed below a cylinder of the engine tilting toward the rear of the front wheel and toward the front of the vehicle, the lower radiator core is provided at a rear portion thereof with an air-cooling fan for forced-cooling the water, and an exhaust pipe extending toward the downside of the vehicle from a lower surface of the cylinder, passes the back of the air-cooling fan and extends toward the rear of the vehicle as viewed from the side of the vehicle.
  • the invention may also be characterized in that an outlet of the lower supply pipe is connected to a front surface of the lower upstream tank.
  • the vehicle has the two radiators one above the other.
  • the vehicle-widthwise dimension of the lower radiator can easily be reduced compared with that of the upper radiator.
  • the bank angle can easily be ensured.
  • the lower return pipe is not extended downward from the lower downstream tank of the lower radiator but extended rearward from the upper portion of the lower downstream tank of the lower radiator.
  • the lower radiator can be extended downward. While ensuring the ground height, an increase in radiation area can easily be achieved.
  • a saddle-ride type vehicle can be provided that can ensure the bank angle while enlarging the radiator.
  • the upper return pipe extending from the upper downstream tank and the lower return pipe extending from the lower downstream tank converge on the upstream side of the water pump.
  • the water cooled by the upper radiator is supplied to the engine not via the lower radiator.
  • the cooling water maintaining a low-temperature state flows into the water jacket of the engine. In short, the cooling efficiency of the engine can be improved.
  • the oil cooler is disposed along the rear surface of the upper radiator and below the upper return pipe as viewed from the side of the vehicle.
  • the oil cooler is disposed along the rear surface of the upper radiator and below the upper return pipe, while effectively utilizing the space defined in rear of the upper radiator and below the upper return pipe, the oil cooler can satisfactorily be disposed in the limited space.
  • the oil cooler is disposed closer to the upper portion of the vehicle. If the oil cooler is disposed closer to the lower portion of the vehicle, ensuring of the bank angle can be influenced. In the present invention, the oil cooler is disposed closer to the upper portion of the vehicle; therefore, the bank angle can further easily be ensured.
  • the upper supply pipe is installed to extend from the engine to the upper upstream tank and the lower supply pipe is installed to extend from the lower portion of the upper upstream tank to the lower upstream tank.
  • the lower supply pipe is installed to extend from the lower portion of the upper upstream tank to the lower upstream tank. Therefore, the lower supply pipe can be reduced in length compared with the case where the lower supply pipe is branched from the upper supply pipe. Since the length of the pipe is short, the weight saving and cost reduction of the vehicle can be achieved.
  • the upper return pipe is extended along the extending direction of the main frame at a position below the main frame as viewed from the side of the vehicle.
  • the upper return pipe and the main frame are arranged in rows as viewed from the side of the vehicle.
  • the upper return pipe and the main frame are arranged in rows; therefore, external appearance is enhanced.
  • the upper return pipe is disposed to overlap the main frame in the back and forth direction of the vehicle.
  • the upper return pipe is disposed to overlap the main frame in the back and forth direction of the vehicle, the upper return pipe can be prevented from projecting toward the side of the vehicle.
  • the exhaust pipe passes the back of the air-cooling fan and is extended toward the rear of the vehicle as viewed from the side of the vehicle.
  • the outlet of the lower supply pipe is connected to the front surface of the lower upstream tank.
  • the lower upstream tank is disposed on one of the left and right in the vehicle-width direction. That is to say, the front surface of the lower upstream tank is opened toward the front of the vehicle; therefore, the outlet of the lower supply pipe can easily be connected to the front surface of the lower upstream tank.
  • a saddle-ride type vehicle 10 is a motorcycle which includes a front fork 12 steerably supported by a head pipe 11; a front wheel 13 rotatably supported by a lower end of the front fork 12; a steering handlebar 14 connected to an upper end of the front fork 12; main frames 15L (symbol L is a suffix indicating left and the same holds true for the following), 15R (symbol R is a suffix indicating right and the same holds true for the following) extending toward the leftward-rear and rightward-rear of a vehicle body from the head pipe 11; a middle frame 17 connected to rear portions of the main frames 15L, R, extending generally vertically and having a pivot shaft 16 at its lower portion; a seat rail 18 extending toward the rear of the vehicle body from the upper end of the middle frame 17; a V-type engine 19 (detailed later) supported by the lower portions of the main frames 15L.
  • main frames 15L symbol L is a suffix indicating left and the same holds true
  • a body frame 27 is composed of the head pipe 11, the main frames 15L, R, the middle frame 17 and the seat rail 18. Steps 28L, R on which feet of a rider sitting on a rider seat of the seat 22 are put are installed at the lower end of the middle frame 17.
  • the middle frame 17 and the seat frame 18 are connected by a connection frame 29.
  • a pillion step 32 on which a foot of a pillion passenger sitting on a pillion passenger seat of the seat 22 is installed on a stay 31 extending from the connection frame 29.
  • the front of the head pipe 11 is covered by a front cowl 33 and the side of the head pipe 11 and the sides of the front portions of the main frames 15L, R are covered by middle cowls 34L, R. Additionally, the side of the rear portion of the seat rail 18 and the side of the rear portion of the connection frame 29 are covered by a side cover 35.
  • a front fender 36 covering the upper portion of the front wheel 13 is attached to the front fork 12.
  • a rear fender 37 is attached to the rear portion of the seat rail 18 so as to cover the rear wheel 24 from rear and above.
  • the saddle-ride type vehicle 10 includes an upper radiator 40 (detailed later) disposed in front of the upper portion of the engine 19 to cool cooling water circulating in the engine 19; and a lower radiator 50 (detailed later) disposed in front of the lower portion of the engine 19 to cool cooling water circulating in the engine 19.
  • the engine 19 includes an oil pan 61; a crankcase 63 disposed above the oil pan 61 and rotatably housing a crankshaft 62 extending in a vehicle-width direction; a forward tilting cylinder 65 tilting forward with respect to a vertical line 64 passing through the center of the crankshaft 62 as viewed from the left lateral surface of the vehicle; and in association with the forward tilting cylinder 65, a rearward tilting cylinder 66 tilting rearward with reference to a central point P1 of the crankshaft 62.
  • the forward tilting cylinder 65 includes a forward tilting cylinder block 67 formed to extend in an anterosuperior direction from the crankcase 63; a forward tilting cylinder head 68 connected to the forward tilting cylinder block 67; and a forward tilting cylinder head cover 69 connected to the forward tilting cylinder head 68 to cover the forward tilting cylinder head 68.
  • the rearward tilting cylinder 66 includes a rearward tilting cylinder block 71 formed to extend in a posterior-superior direction from the crankcase 63; a rearward tilting cylinder head 72 connected to the rearward tilting cylinder block 71; and a rearward tilting cylinder head cover 73 connected to the rearward tilting cylinder head 72 to cover the rearward tilting cylinder head 72.
  • the main frame 15L includes an upper pipe 74L extending toward the rearward downside of the vehicle body from the upper portion of the head pipe 11 and connected to the middle frame 17; a lower pipe 75L extending toward the rearward downside of the vehicle body from the lower portion of the head pipe 11; a first pipe 76L extending obliquely with respect to the upper pipe 74L and the lower pipe 75L and connecting the front portion of the upper pipe 74L with the front end of the lower pipe 75L; a second pipe 77L extending generally vertically with respect to the upper pipe 74L and the lower pipe 75L and connecting the front portion of the upper pipe 74L with the intermediate portion of the lower pipe 75L; and a third pipe 78L extending obliquely with respect to the upper pipe 74L and the lower pipe 75L and connecting the rear portion of the upper pipe 74L with the intermediate portion of the lower pipe 75L.
  • the main frame 15R has the same configuration as that of the main frame 15L; therefore, its description is omitted. That is to say, the main frames 15L, R are truss frames formed by welding a plurality of the pipes 74 to 78L, R.
  • the rearward tilting cylinder 66 is connected to the upper pipe 74L and the third pipe 78L.
  • the forward tiling cylinder 65 is connected to the lower pipe 75L. In this way, the engine 19 is supported by the body frame 27.
  • the rearward tiling cylinder head 72 and the rearward tilting cylinder head cover 73 are disposed above the upper pipe 74L of the main frame 15L and below the fuel tank 21. Additionally, a frame member 79 disposed below the fuel tank 21 and extending toward the front of the vehicle body is attached to the upper end of the middle frame 17. In other words, an opening portion 81 is defined between the upper pipe 74L and the frame ember 79. Heat of the rearward tilting cylinder 66 can be discharged from the opening portion 81 to the outside of the vehicle body.
  • the frame member 79 can also serve as a foot-applying portion to which a foot can be applied when a rider knee-grips a knee-grip portion 82 of the fuel tank 21.
  • the upper radiator 40 is disposed above the front wheel 13 and in front of the engine 19.
  • the lower radiator 50 is disposed in rear of the upper radiator 40, between the front wheel 13 and the engine 19 and below the forward tilting cylinder 65 of the engine 19 tilting toward the front of the vehicle.
  • the upper radiator 40 is provided at an upper end thereof with an upper connecting member 83L extending toward the rearward upside of the vehicle body.
  • the upper connecting member 83L is connected to the lower pipe 75L.
  • the upper radiator 40 is provided at a lower end thereof with a lower connecting member 84 extending toward the rear of the vehicle body.
  • a radiator connecting member 85 extending toward the rearward downside of the vehicle body is connected to the lower connecting member 84.
  • the radiator connecting member 85 is connected at a rear end thereof to the forward tilting cylinder head 68.
  • the lower radiator 50 has an upper end 86L connected to a lower end of the radiator connecting member 85.
  • the lower radiator 50 has a lower end 87 connected to a front portion of the oil pan 61 via a stay 88 for the lower radiator.
  • the upper radiator 40 and the lower radiator 50 are supported by the main frame 15L.
  • the upper radiator 40 is disposed below and adjacently to the lower pipe 75L of the main frame 15L as viewed from the left side of the vehicle.
  • a water pump 89 adapted to supply water (coolant) to the upper radiator 40 and the lower radiator 50 is installed on a left lateral portion of the crankcase 63.
  • a reservoir tank 91 connected to a radiator cap of the upper radiator 40 is attached to a front end portion of the lower pipe 75L.
  • a configuration of the upper radiator 40 and the lower radiator 50 is described with reference to Fig. 3 .
  • the upper radiator 40 includes an upper radiator core 41 extending in a vehicle-width direction; an upper upstream tank 42 connected to the vehicle-widthwise right of the upper radiator core 41 and adapted to store water to be supplied to the upper radiator core 41; and an upper downstream tank 43 connected to the vehicle-widthwise left of the upper radiator core 41 and adapted to store water cooled by the upper radiator core 41.
  • the lower radiator 50 includes a lower radiator core 51 extending in a vehicle-width direction; a lower upstream tank 52 connected to the vehicle-widthwise right of the lower radiator core 51 and adapted to store water to be supplied to the lower radiator core 51; and a lower downstream tank 53 connected to the vehicle-widthwise left of the lower radiator core 51 and adapted to store water cooled by the lower radiator core 51.
  • an upper supply pipe 54 adapted to supply water to the upper upstream tank 42 extends from the engine 19 to the upper upstream tank 42.
  • a lower supply pipe 55 adapted to supply water to the lower upstream tank 52 has an inlet connected to an upper upstream connection pipe 93 installed in a lower portion of the upper upstream tank 42.
  • the lower supply pipe 55 has an outlet 56 connected to a lower upstream connection pipe 94 installed on a front surface 57 of the lower upstream tank 52.
  • the saddle-ride type vehicle ( Fig. 1 , reference symbol 10) includes, on the vehicle-widthwise right, the upper supply pipe 54 extending from the engine 19 to the upper upstream tank 42; and the lower supply pipe 55 extending from the lower portion of the upper upstream tank 42 to the lower upstream tank 52.
  • the forward tilting cylinder 65 is installed so as to be offset rightward from a vehicle-widthwise centerline 92 as viewed from the front of the vehicle.
  • the rearward tilting cylinder 66 is installed so as to be offset leftward from the vehicle-widthwise centerline 92.
  • An oil cooler 95 adapted to cool engine oil circulating in the engine 19 is disposed on the left side of the forward tilting cylinder 65.
  • the forward tilting cylinder 65 may be installed so as to be offset leftward from the vehicle-widthwise centerline 92 and the rearward tilting cylinder 66 may be installed so as to be offset rightward from the vehicle-widthwise centerline 92.
  • the oil cooler 95 may be disposed on the right side of the front tilting cylinder 65.
  • an upper downstream connection pipe 97 extends toward the rearward downside of the vehicle body from an upper rear surface 96 of the upper downstream tank 43.
  • An inlet 99 of an upper return pipe 98 adapted to return cooling water to the engine 19 is connected to the upper downstream connection pipe 97.
  • a lower downstream connection pipe 102 extends toward the rear of the vehicle body from an upper portion 101 of the lower downstream tank 53.
  • An inlet 104 of a lower return pipe 103 adapted to return cooling water to the engine 19 is connected to the lower downstream connection pipe 102.
  • the confluence portion 105 is composed of a short pipe 106 connected to the outlet of the lower return pipe 103 and a confluence pipe 107 joining the short pipe 106 and connected to the outlet of the upper return pipe 98.
  • the short pipe 106 of the confluence portion 105 and a main suction pipe 108 of the water pump 89 are connected by a suction side return pipe 109.
  • a bypass pipe 112 connected to the inside of the water jacket of the engine 19 is connected to a sub-suction pipe 111 of the water pump 89.
  • a supply pipe 113 extending from a discharge port of the water pump 89 is connected to the cylinder block 71 of the rearward tilting cylinder 66.
  • the upper return pipe 98 extends along the extending direction of the lower pipe 75L at a position below the lower pipe 75L of the main frame 15L, further extending along a front surface 114 of the crankcase 63 toward the downside of the vehicle, and is connected to the confluence portion 105.
  • the lower radiator core (reference symbol 51 in Fig. 3 ) is provided at a rear portion thereof with an air-cooling fan 115 for forced-cooling water.
  • the exhaust pipe 25 extending toward the downside of the vehicle from the lower surface of the forward tilting cylinder 65 passes the back of the air-cooling fan 115 and extends toward the rear of the vehicle as viewed from the left of the vehicle.
  • the oil cooler 95 is disposed between the upper radiator 40 and the lower radiator 50 as viewed from the left of the vehicle. While extending along the rear surface 116 of the upper radiator 40, as viewed from the left of the vehicle, the oil cooler 95 is disposed below the upper downstream connection pipe 97 to which the upper return pipe 99 is connected. Incidentally, the oil cooler 95 may be located below the upper return pipe 99 by reducing the length of the upper downstream connection pipe 97.
  • the thermostat 117 comes into an opened state in (b). Therefore, water flows into the upper radiator 40 and the lower radiator 50 as shown by arrow (2). High-temperature water flows into upper tubes 119 of the upper radiator core 41 and lower tubes 121 of the lower radiator core 51 and the airflow resulting from the running vehicle moves into upper fins 122 and lower fins 123. Such airflow strikes the outer surfaces of the upper tubes 119 and the lower tubes 121, which emits heat possessed by the high-temperature water to the atmosphere. Thus, water is cooled.
  • the upper return pipe 98 has a diameter D2 generally equal to a diameter D1 of the lower pipe 75L.
  • the upper return pipe 98 is disposed to overlap the main frame 15L in the back and forth direction of the vehicle by a width-dimension W1.
  • a harness 124 is disposed on the vehicle body-inside of the lower pipe 75L.
  • the body frame applied to the saddle-ride type vehicle 10 has other types in addition to the type shown in Fig. 2 .
  • An example of the other types is next described.
  • FIG. 7 a detailed description of configurations common to those of Fig. 2 is omitted by diverting their reference symbols.
  • a main modified point is that the upper pipe of the main frame and the middle frame are connected by pipes.
  • a main frame 125L of a body frame 27B includes an upper pipe 127L extending from the upper portion of a head pipe 11 toward the rearward downside of the vehicle body and connected to the a middle frame 126; a lower pipe 128L extending from the lower portion of the head pipe 11 toward the rearward downside of the vehicle body; and a reinforcing pipe 129L obliquely connecting the rear end of the upper pipe 127L with the rear end of the lower pipe 128L.
  • the middle frame 126 is provided with a pivot plate 131 having a pivot shaft 16.
  • an intermediate portion of the upper pipe 127L and a front portion of the lower pipe 128L are connected by a first pipe 132L extending obliquely with respect to the upper pipe 127L and the lower pipe 128L.
  • the intermediate portion of the upper pipe 127L and an intermediate portion of the lower pipe 128L are connected by a second pipe 133L extending generally vertically with respect to the upper pipe 127L and the lower pipe 128L.
  • the rear portion of the upper pipe 127L and the intermediate portion of the lower pipe 128L are connected by a third pipe 134L extending obliquely with respect to the upper pipe 127L and the lower pipe 128L.
  • the main frame 125R has the same configuration as that of the main frame 125L; therefore, its description is omitted.
  • the main frames 125L, R are formed as truss frames.
  • the truss frame is composed of a plurality of pipes; therefore, weight saving can be achieved easily.
  • FIG. 2 A description is next given of the confluence portion between the return pipe adapted to return water to the engine 19 and the bypass pipe.
  • the bypass pipe 112 is connected to the sub-suction pipe 111 of the water pump 89.
  • a modification is made such that the bypass pipe is connected to the confluence portion. The details of the modification are next described.
  • the upper return pipe 98 and the lower return pipe 103 are converged to the confluence portion 137.
  • the bypass pipe 138 is converged to the confluence portion 137.
  • the upper return pipe 98, the lower return pipe 103 and the bypass pipe 138 are converged to the confluence portion 137, a plurality of the pipes can collectively be connected at one place. Thus, pipe connecting work can be done efficiently. Additionally, the upper return pipe 98 and the bypass pipe 138 are arranged in rows so as to extend in a vertical direction; therefore, external appearance is improved.
  • the vehicle-widthwise dimension W3 of the lower radiator 50 can easily be reduced compared with the vehicle-widthwise dimension W2 of the upper radiator 40.
  • a bank angle ⁇ 1 can easily be ensured.
  • the lower return pipe 103 is not extended downward from the lower downstream tank 53 of the lower radiator 50 but is extended rearward from the upper portion 101 of the lower downstream tank 53 of the lower radiator 50.
  • the lower radiator 50 can be extended downward. While ensuring ground height H1, an increase in radiation area can easily be achieved.
  • the saddle-ride type vehicle 10 can be provided that can ensure a bank angle ⁇ while enlarging the radiators 40, 50.
  • the water cooled by the upper radiator 40 can be supplied to the engine 19 not via the lower radiator 50. Therefore, the cooling water maintaining a low-pressure state flows into the water jacket of the engine 19. In short, the cooling efficiency of the engine 19 can be improved.
  • the oil cooler 95 is disposed along the rear surface 116 of the upper radiator 40 and below the upper downstream connection pipe 97 to which the upper return pipe 99 is connected. Therefore, while effectively utilizing a space behind the upper radiator 40 and below the upper downstream connection pipe 97, the oil cooler 95 can satisfactorily be disposed in the limited space.
  • the oil cooler 95 can be disposed closer to the upside of the vehicle. If the oil cooler 95 is disposed in the lower portion of the vehicle, ensuring of the bank angle ⁇ 1 can be influenced. However, in the present invention, the oil cooler 95 is disposed closer to the upside of the vehicle; therefore, the bank angle ⁇ can further easily be ensured.
  • the lower supply pipe 55 is installed to extend from the lower portion of the upper upstream tank 42 to the lower upstream tank 52. Therefore, the lower supply pipe 55 can be reduced in length compared with the case where the lower supply pipe 55 is branched from the upper supply pipe 54. Since the length of the pipe is short, the weight saving and cost reduction of the vehicle can be achieved.
  • the upper return pipe 98 is extended along the upper pipe 75L of the main frame 15L. Therefore, the upper return pipe 98 and the upper pipe 75L of the main frame 15L are arranged in rows. Since the upper return pipe 98 and the upper pipe 75L of the main frame 15L are arranged in rows as viewed from the side of the vehicle, external appearance is improved.
  • the upper return pipe 98 is disposed to overlap the lower pipe 75L of the main frame 15L in the back and forth direction of the vehicle.
  • the upper return pipe 98 can be prevented from projecting toward the side of the vehicle.
  • the exhaust pipe 25 passes the back of the air-cooling fan 115. Therefore, the air supplied by the air-cooling fan 115 strikes the exhaust pipe 25. Consequently, the cooling of the exhaust pipe 25 can be promoted.
  • the front wheel is disposed in front of the lower radiator 50.
  • the lower upstream tank 52 is disposed on the right side in the vehicle-width direction.
  • the front of the lower upstream tank 52 is made open to the front of the vehicle. Therefore, the outlet 56 of the lower supply pipe 55 can easily be connected to the front surface 57 of the lower upstream tank 52.
  • the upper supply pipe 54 and the lower supply pipe 55 are arranged on the right in the vehicle-width direction and the upper return pipe 98 and the lower return pipe 103 are arranged on the left in the vehicle-width direction.
  • the upper supply pipe 54 and the lower supply pipe 55 may be disposed on the left in the vehicle-width direction and the upper return pipe 98 and the lower return pipe 103 may be disposed on the right in the vehicle-width direction.
  • the upstream tank and the downstream tank are naturally reversed right and left.
  • the saddle-ride type vehicle according to the present invention is applied to the motorcycle in the present embodiment.
  • the saddle-ride type vehicle of the present invention can be applied to three-wheeled vehicles and four-wheeled vehicles which are capable of saddle-riding and to general vehicles without problem.
  • the saddle-ride type vehicle of the present invention is suitable for motorcycles equipped with a water-cooled engine.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
EP20130155880 2012-02-27 2013-02-20 Sattelfahrzeug Not-in-force EP2631447B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012039789A JP2013173473A (ja) 2012-02-27 2012-02-27 鞍乗型車両

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CN105370374A (zh) * 2015-12-15 2016-03-02 重庆黄河摩托车有限公司 一种三轮摩托车散热系统
WO2019029959A1 (de) * 2017-08-08 2019-02-14 Audi Ag Verfahren zum betreiben einer antriebseinrichtung eines kraftfahrzeugs sowie entsprechende antriebseinrichtung

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JP6163518B2 (ja) * 2015-07-23 2017-07-12 本田技研工業株式会社 冷却装置
JP6900806B2 (ja) * 2017-07-04 2021-07-07 スズキ株式会社 エンジン冷却システム
JP2021160372A (ja) * 2020-03-30 2021-10-11 本田技研工業株式会社 ラジエータ

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US4673032A (en) * 1982-09-22 1987-06-16 Honda Radiator and oil cooling apparatus for motor vehicles
FR2642014A1 (fr) * 1989-01-24 1990-07-27 Suzuki Motor Co Circuit de refroidissement pour motocyclette
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CN105370374A (zh) * 2015-12-15 2016-03-02 重庆黄河摩托车有限公司 一种三轮摩托车散热系统
CN105370374B (zh) * 2015-12-15 2018-02-13 重庆黄河摩托车有限公司 一种三轮摩托车散热系统
WO2019029959A1 (de) * 2017-08-08 2019-02-14 Audi Ag Verfahren zum betreiben einer antriebseinrichtung eines kraftfahrzeugs sowie entsprechende antriebseinrichtung
US10982584B2 (en) 2017-08-08 2021-04-20 Audi Ag Method for operating a drive device of a motor vehicle, and corresponding drive device

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EP2631447B1 (de) 2014-10-22
AU2012244258A1 (en) 2013-09-12
AU2012244258B2 (en) 2015-03-12
RU2013108232A (ru) 2014-08-27
RU2532006C2 (ru) 2014-10-27
JP2013173473A (ja) 2013-09-05

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