Straddle type vehicle having an electronic throttle valve system
First Claim
1. A straddle type vehicle having an electronic throttle valve system for adjusting the amount of intake air to an internal combustion engine, the electronic throttle valve system comprising:
- a throttle valve for adjusting the amount of intake air to the internal combustion engine;
an electric motor for actuating the throttle valve; and
a control unit for controlling the electric motor, wherein the throttle valve is fixed to a valve shaft;
the electric motor, connected to the valve shaft, is located for actuating the throttle valve through the valve shaft;
a throttle opening sensor is provided on the valve shaft, the throttle opening sensor being in electrical connection with the control unit and detecting the opening of the throttle valve;
a guard mechanism is provided on the valve shaft, the guard mechanism including;
a pulley with which a throttle cable is engaged, the throttle cable being coupled to a throttle grip of the straddle type vehicle; and
a first rotational member for operating in conjunction with the pulley;
a second rotational member is formed on the valve shaft, the second rotational member operating in conjunction with the valve shaft;
a relative movement of the first and the second rotational members is limited within a predetermined displacement; and
an elastic member is formed between the first and second rotational members.
1 Assignment
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Accused Products
Abstract
An electronic throttle valve system more suitable for use in straddle type vehicles. A straddle type vehicle has an electronic throttle valve system for adjusting the amount of intake air to an internal combustion engine. The electronic throttle valve system includes a throttle valve, an electric motor and a control unit. A guard mechanism is provided on a valve shaft of the throttle valve. The guard mechanism includes a pulley with which the throttle cable is engaged and a lever pulley which rotates in conjunction with the opening of the pulley. A cushion spring is provided on an edge face of a notched portion of the lever pulley, the edge face generally coming into contact with a protrusion that extends from the valve shaft of the throttle valve.
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Citations
9 Claims
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1. A straddle type vehicle having an electronic throttle valve system for adjusting the amount of intake air to an internal combustion engine, the electronic throttle valve system comprising:
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a throttle valve for adjusting the amount of intake air to the internal combustion engine;
an electric motor for actuating the throttle valve; and
a control unit for controlling the electric motor, wherein the throttle valve is fixed to a valve shaft;
the electric motor, connected to the valve shaft, is located for actuating the throttle valve through the valve shaft;
a throttle opening sensor is provided on the valve shaft, the throttle opening sensor being in electrical connection with the control unit and detecting the opening of the throttle valve;
a guard mechanism is provided on the valve shaft, the guard mechanism including;
a pulley with which a throttle cable is engaged, the throttle cable being coupled to a throttle grip of the straddle type vehicle; and
a first rotational member for operating in conjunction with the pulley;
a second rotational member is formed on the valve shaft, the second rotational member operating in conjunction with the valve shaft;
a relative movement of the first and the second rotational members is limited within a predetermined displacement; and
an elastic member is formed between the first and second rotational members. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification