Yamaha Motor Patente

The measurement data acquisition system (180) includes: a wheel rotation speed sensor (11 b) configured to acquire a first wheel rotation speed, wherein the first wheel rotation speed is a rotation speed of the first wheel (3); a vehicle speed sensor (11a) configured to acquire a vehicle speed of a test vehicle (100); an attitude detection unit (11c) configured to acquire a bank angle of a vehicle body (1) of the test vehicle (100); and an arithmetic unit (30) configured to, during travel at a predetermined bank angle and in the absence of any braking force or driving force, acquire measurement data (55) representing a relationship between the first wheel rotation speed and the vehicle speed. The measurement data (55) is to be installed in a predetermined vehicle for use in determining a relationship between the rotation speed of a wheel of the predetermined vehicle and the vehicle speed of the predetermined vehicle during travel of the predetermined vehicle at the predetermined bank angle.

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A first brake hose 40 1 includes a first hose main body 50 1 , a first fitting 60 1 to be coupled to the first hose main body 50 1 , and a first rotatable fixing member 70 1 fixing the first fitting 60 1 to a brake hose connecting unit 140. The first fitting 60 1 has: a first insertion-through part 61 1 through which the first rotatable fixing member 70 1 is inserted; a first attachment tube part 62 1 to be connected to the first insertion-through part 61 1 ; and a first protruded part 63 1 protruding from a first lateral surface 61T 1 of the first insertion-through part 61 1 . The first protruded part 63 1 is contacted to a second fitting 60 2 of a second brake hose 40 2 .

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A straddle type vehicle is provided that allows the setting of a function selected from a plurality of functions to be changed. The straddle type vehicle (10) includes an operation unit (36A, 36B), a display unit (22A) and a control unit (50, 52, 54A, 56A, 58A). The display unit (22A) displays information associated with at least one of a plurality of functions each having a changeable setting. The control unit (50, 52, 54A, 56A, 58A) changes the setting of the function indicated by the information displayed on the display unit (22A). The operation unit (36A, 36B) allows for a select operation and a change operation. The select operation selects at least one of the plurality of functions. The change operation the setting of the function indicated by the information displayed on the display unit (22A). The display unit (22A) displays information associated with the function selected by the select operation. The control unit (50, 52, 54A, 56A, 58A) changes, in accordance with the change operation, the setting of the function indicated by the information displayed on the display unit (22A).

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A state where an engine is in an idling state, a dynamo (21) supplies electric power to a starting device (71), a headlight (39), a taillight (51) and an ECU (33), and the battery (35) is disconnected from power source wiring (76) and a ground circuit (77) is defined as an idling state without an onboard battery (35). A mode in which the dynamo (21) supplies electric power to at least one of a brake light (53), a turn indicator (41) and a horn (47) is defined as a power feed mode. The ECU (33) adjusts the electric power supplied to the headlight (39) at a time of the idling state without the onboard battery (35) and the power feed mode, based on a system voltage (Vs) applied to the starting device (71), electrical components (72) and ECU (33).

A first switch (61) is provided at a handle (22L, 22R). In a case in which the first switch (61) is continuously depressed for a first time period, launch control is set to an activation state. A launch icon (158a) is displayed in a blinking mode on a screen (51) of a meter unit (52) while the first switch (61) is continuously depressed after the first switch (61) has been continuously depressed for a second time period that is shorter than the first time period, in a period from a start of the depression of the first switch (61) until the first time period has elapsed. In a case in which the first switch (61) has been continuously depressed for the first time period from the start of the depression of the first switch (61), the launch icon (158a) is displayed in a lighting mode on the screen (51) of the meter unit (52).

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In an internal combustion engine, upper and lower crankcases include a crank chamber, a clutch chamber in communication with the crank chamber, and a cam chain chamber. The upper crankcase includes a second upper partition wall configured to separate the cam chain chamber and the clutch chamber from each other. The lower crankcase includes a first lower partition wall configured to separate the cam chain chamber and the crank chamber from each other, and a second lower partition wall configured to separate the cam chain chamber and the clutch chamber from each other. An oil passage allowing communication between the cam chain chamber and the crank chamber is provided in the first lower partition wall. First passages allowing communication between the cam chain chamber and the clutch chamber are provided respectively in the bottom surface of the second upper partition wall and in the top surface of the second lower partition wall.

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A tilt angle sensor (10) is positioned below the upper surface of a seat (114) when a motorcycle (100) is seen in side view. Further, the tilt angle sensor (10) is arranged behind the front end of the seat (114) in the rear end of the seat (114) when the motorcycle (100) is seen in side view. Further, the tilt angle sensor (10) is arranged not to overlap with a vehicle central axis (L1) that extends in a front and rear direction (L) of the motorcycle (100) and passes through a central portion of the rear wheel (108) in a width direction (W) when the motorcycle (100) is viewed from above.

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A motorcycle (100) comprising right and left main frames (1) extending in a vehicle rearward direction from a head pipe (3), the right and left main frames (1) each include a respective engine suspension portion (1b), a cylinder unit (71) of an engine unit (70) is supported by the pair of engine suspension portions (1b) wherein at least a part of the one engine suspension portion (1b) is positioned between an ECU (40) and the cylinder unit (71) in a vehicle width direction.

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