US 2006/0131951 A1 · Braking device for motorcycle

Abstract

A braking device for a motorcycle for controlling a sudden increase in the braking force caused by a time lag from the time the amount of operation of a brake operating portion is detected until a change in hydraulic pressure of wheel braking means for improving the feel of braking. An input-side pressure sensor detects a master cylinder pressure and a hydraulic modulator creates a hydraulic pressure to be exerted on a brake caliper. A controller is provided for controlling the hydraulic pressure created by the hydraulic modulator in accordance with a detected signal provided from the input-side pressure sensor. In accordance with a change in the quantity per unit time of the detected signal provided from the input-side pressure sensor the controller limits a change speed of the hydraulic pressure created by the hydraulic modulator.

Claims20

Dependent claims

A braking device for a motorcycle, comprising:

input state detecting means for detecting the behavior of a brake operating portion;
a hydraulic modulator for creating a hydraulic pressure to be exerted on wheel braking means;
and
hydraulic pressure control means for controlling the hydraulic pressure created by the hydraulic modulator in accordance with a detected signal provided from the input state detecting means;
wherein the hydraulic pressure control means includes change speed limiting means for limiting a change speed of the hydraulic pressure created by the hydraulic modulator in accordance with a change quantity per unit time of a detected value provided from the input state detecting means.

2 more elements

A braking device for a motorcycle, comprising:

a master cylinder interlocked with a brake operating portion;
wheel braking means for imparting a braking force to a wheel with use of hydraulic pressure in the master cylinder;
a main brake passage for connecting the master cylinder with the wheel braking means;
a hydraulic modulator for supplying a hydraulic pressure generated by an electric actuator to the wheel braking means through the main brake passage;
and
a first electromagnetic opening/closing valve of a normally open type disposed on the master cylinder side with respect to a connection of the main brake passage with the hydraulic modulator;
wherein, when applying the brake, the electric actuator is controlled in accordance with the amount of operation of the brake operating portion in a closed state of the first electromagnetic opening/closing valve to supply a hydraulic pressure to the wheel braking means through the hydraulic modulator, and wherein the first electromagnetic opening/closing valve is opened when a main power supply is turned ON or until the vehicle speed reaches a predetermined vehicle speed, and after arrival of the vehicle speed at the predetermined vehicle speed, a rated electric current is supplied to the first electromagnetic opening/closing valve to close the valve, thereafter, the electric current supplied to the first electromagnetic opening/closing valve is decreased within a predetermined range that is able to maintain this state of operation.

4 more elements

A braking device for a motorcycle, comprising:

a master cylinder interlocked with a brake operating portion;
wheel braking means for imparting a braking force to a wheel with use of hydraulic pressure in the master cylinder;
a main brake passage for connecting the master cylinder with the wheel braking means;
a hydraulic modulator for supplying a hydraulic pressure generated by an electric actuator to the wheel braking means through the main brake passage;
and
a first electromagnetic opening/closing valve of a normally open type disposed on the master cylinder side with respect to a connection between the main brake passage and the hydraulic modulator;
wherein, when applying the brake, the electric actuator is controlled in accordance with the amount of operation of the brake operating portion in a closed state of the first electromagnetic opening/closing valve to supply a hydraulic pressure to the wheel braking means through the hydraulic modulator;
and
wherein the first electromagnetic opening/closing valve is opened when a main power supply is turned ON or until the vehicle speed reaches a predetermined vehicle speed, the first electromagnetic opening/closing valve is closed after arrival of the vehicle speed at the predetermined vehicle speed, and when there is a brake release input after the application of the brake in response to a braking input in this state, the first electromagnetic opening/closing valve is opened temporarily at a predetermined timing when the brake is not actuated.

6 more elements

Dependencies are inferred from the claim text.

Braking device for motorcycle

Life of this patent

Braking device for motorcycle

Life of this patent

Abstract

Claims20