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Control and transmission of straddle type vehicle, and the same

A control system and straddle-type technology, applied in the field of straddle-type vehicles, can solve the problems of increasing vehicle acceleration, difficult downshift operation, changing speed ratio, etc., and achieve the effect of easy downshift operation.

Active Publication Date: 2008-09-03
YAMAHA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for vehicles incorporating an ECVT, the rider cannot optionally change the ratio from the settings given in the ratio map
Therefore, for vehicles incorporating ECVTs, it is difficult for the rider to effectively apply engine braking at his or her will
More specifically, it is difficult for the rider to apply engine braking that is stronger than that given by the ratio chart
[0004] In addition, for a vehicle incorporating an ECVT, it is difficult to perform a so-called downshift operation, whereby when the vehicle passes another vehicle, it is intended to perform a larger upshift operation than in an ordinary state to increase the acceleration of the vehicle

Method used

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  • Control and transmission of straddle type vehicle, and the same
  • Control and transmission of straddle type vehicle, and the same
  • Control and transmission of straddle type vehicle, and the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] "Structure of Motorcycle 1"

[0041] In this embodiment, an example of an embodiment of the present invention will be described by providing, for example, a motorcycle 1 of a so-called scooter type. Such as figure 1 As shown, a motorcycle 1 has a steering handle 4, a power unit 2 and a rear wheel 3 serving as a drive wheel. The power unit 2 and the rear wheels 3 are connected to each other through a power transmission mechanism 6 .

[0042] (steering handle 4)

[0043]FIG. 2 is a schematic diagram of the steering handle 4 . The steering handle 4 has a handle bar 4d connected to a not shown steering head pipe. The steering handle 4 includes a left grip portion 4a at the left end of the handle bar 4d and a right grip portion 4b at the right end of the handle bar 4d. The right grip portion 4b is pivotable relative to the handle bar 4d. When the rider pivots the right grip portion 4b, a throttle valve not shown is operated to control the throttle opening degree.

[0...

Embodiment 2

[0151] Instead of the transmission 20 of the first embodiment, for example, as shown in FIG. 19 , a transmission 260 having a metal V-belt may be used. In FIG. 19 , components or portions that perform the same operations as in the transmission of the embodiment described in FIG. 4 are denoted by the same reference numerals. However, in FIG. 19, the internal structure of the ECU 5 is the same as that of the first embodiment, so it is not shown in the figure.

[0152] In this embodiment, as shown in FIG. 19 , in addition to a V-belt (occasionally called "metal belt") 264 made of metal, a transmission 260 is applied with several modifications.

[0153] The belt CVT 260 includes a clutch 35, a primary rotational speed sensor 261, hydraulic cylinders 267A, 267B, and a hydraulic control valve 267C.

[0154] Clutch 35 is provided between output shaft 12 of engine 10 and input shaft 13 of belt CVT 260 . The clutch 35 connects or disconnects power transmission between the output shaf...

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PUM

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Abstract

The present invention provides a control and transmission of straddle type vehicle, and the same, easily processing gear-reducing operation. The control system (5) includes a manual transmission (MT) mode temporarily selecting section (51) for making the gear change mode selecting section (52) select the MT mode temporarily and for making the gear ratio control section (55) change the gear ratio of the transmission (20) to any one of gear ratios positioned lower than a current gear ratio of the transmission (20) among a plurality of predetermined gear ratios, when the mode change signal (101) is inputted in an automatic transmission (AT) mode selected by the gear change mode selecting section (52), and an AT mode returning section (54) for returning the gear change mode selected by the gear change mode selecting section (52) to the AT mode when the release signal (107) is outputted after the MT mode is temporarily selected by the MT mode temporarily selecting section (51).

Description

technical field [0001] The present invention relates to a control system and a transmission of a straddle-type vehicle and a transmission, and also relates to a straddle-type vehicle. Background technique [0002] Conventionally, an electronically controlled continuously variable transmission (hereinafter referred to as "ECVT") is known. In the ECVT, the gear ratio is automatically changed based on a gear ratio map showing the relationship among the vehicle speed, the engine speed (accelerator opening) and the gear ratio. Therefore, an ECVT-incorporated vehicle (hereinafter referred to as "ECVT-incorporated vehicle") does not require any gear ratio changing operation or clutch operation by the rider. Therefore, ECVT is incorporated in various vehicles recently. [0003] However, for vehicles incorporating an ECVT, the rider cannot optionally change the ratios from the settings given in the ratio map. Therefore, with vehicles incorporating ECVTs, it is difficult for the ri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62K11/14B62M25/08F16H59/02B62M9/122B62J99/00B62M9/12B62M25/04F16H59/24F16H59/42F16H59/54F16H61/02F16H61/66F16H61/662
Inventor 海野敏夫
Owner YAMAHA MOTOR CO LTD