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Straddle type vehicle

A straddle and vehicle technology, applied in the field of straddle vehicles, can solve the problems of inability to drive the engine and reduced battery capacity

Active Publication Date: 2012-12-19
YAMAHA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the capacity of the battery decreases due to power consumption or deterioration of the battery, the engine cannot be driven

Method used

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  • Straddle type vehicle
  • Straddle type vehicle
  • Straddle type vehicle

Examples

Experimental program
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Effect test

no. 1 approach

[0057]

[0058] figure 1 An overall left view of the motorcycle 10 according to the present invention is shown. In addition, in the following description, front, rear, left, and right directions are assumed to refer to front, rear, left, and right directions seen by a passenger sitting on the seat 22 of the motorcycle 10 described later. Hereinafter, arrow F in the drawings indicates the front direction of the motorcycle 10 , arrow U indicates the upward direction of the motorcycle 10 , and arrow L indicates the leftward direction of the motorcycle 10 .

[0059] The motorcycle 10 includes a vehicle body 12 , front wheels 14 provided at the front of the motorcycle 10 , rear wheels 16 provided at the rear of the motorcycle 10 , and kick pedals 11 .

[0060] The vehicle body 12 mainly includes: a frame 18 , a handlebar 20 , a seat 22 , and a power unit 24 .

[0061] The frame 18 supports a power unit 24, a seat 22, and the like. The power unit 24 includes an engine 44 and a...

no. 2 approach

[0138] In the first embodiment, the ECU 60 controls the supply of electric power from the battery 64 to the fuel pump 54 after the voltage is supplied to the ECU 60 during the operation of detecting whether the engine 44 can be started. However, in the second embodiment, the ECU 60 is supplied with electric power. Thereafter, the ECU 60 controls the supply of electric power from the battery 64 to the fuel pump 54 and the ignition coil 58 . Except for this difference, the configuration of the second embodiment is the same as that of the first embodiment, so description thereof will be omitted.

[0139] Such as Figure 10 The starting operation of the engine 44 is performed as shown in the timing chart. exist Figure 10 , the horizontal axis represents time. The boxes on the right of the ECU power supply and the fuel pump respectively show the timing at which electric power is supplied from the battery 64 . The operation of detecting the battery voltage is performed after th...

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PUM

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Abstract

The invention relates to a straddle type vehicle. An apparatus is provided that determines whether the engine can be driven depending on the environment around the motorcycle without providing a mechanism intended to determine the battery level. An ECU 60 includes: a switch detector 603 that detects that the main switch 66 has changed from off to on; a drive controller 601 that drives an engine drive member when the switch detector 603 detects that the main switch 66 has changed from off to on; a start detector 604 that detects a start of the engine 44; a voltage detector 602 that senses the voltage at the battery 64 after the engine drive member begins to be driven and before the start detector 604 detects a start of the engine 44; a warning controller 605 that provides a warning lamp 62 with a warning instruction if the voltage value sensed by the voltage detector 602 is not more than a first threshold.

Description

technical field [0001] This invention relates to straddle-type vehicles, and more particularly to straddle-type vehicles in which electric power is supplied from a battery to an engine control system. Background technique [0002] A two-wheeled vehicle is widely known as a type of straddle vehicle. There are automatic two-wheelers that include an engine control system for controlling the engine. Engine control systems include, for example, a fuel tank, a fuel pump, and injectors. The engine control system is powered by the battery. With the power supply from the battery, the engine control system drives the fuel pump, etc. Electric power supply from the battery is controlled by an engine control unit (ECU: Engine Control Unit). When the capacity of the battery decreases due to power consumption, deterioration of the battery, etc., the engine cannot be driven. In order to prevent the engine from being unable to drive, a motorized two-wheeled vehicle has been proposed tha...

Claims

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Application Information

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IPC IPC(8): F02D45/00
CPCF02N11/00F02N3/04F02D2041/228G01R19/165F02N11/0848F02N11/0862G01R31/362G01R31/36F02N2200/063F02N2250/02G01R31/3835
Inventor 松田岳志木村顺一生方克典
Owner YAMAHA MOTOR CO LTD
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