Throttle body having fuel return passage and vehicle
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsKeisuke Maruo, Mitsuharu Yamamoto
Life of this patent
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Abstract
A throttle body includes a housing that accommodates a connector for a rotation shaft of a throttle valve disposed in the throttle body and a throttle position sensor, a fuel return passage that communicates the housing with an air intake passage in the throttle body, a T-shaped pipe that communicates with the air intake passage upstream from the throttle body to function as a pressure control chamber, and an air inflow passage that communicates the housing with the T-shaped pipe. The throttle body smoothly returns the fuel accumulated in a housing that accommodates a connector that connects a throttle position sensor to the end of the rotation shaft of a throttle valve to an air intake passage.
Claims7
A throttle body comprising:
- a throttle valve disposed in an air intake passage of the throttle body, the throttle valve being mounted to a rotation shaft journaled by a wall of the air intake passage;
- a throttle position sensor connected via a connector to one end of the rotation shaft and arranged to detect a rotation angle of the rotation shaft;
- a housing that accommodates the connector;
- a fuel return passage arranged to communicate the air intake passage with the housing;
- a pressure control chamber arranged to communicate with the air intake passage upstream from the throttle body;
- and
- an air inflow passage arranged to communicate the housing with the pressure control chamber.
Dependencies are inferred from the claim text.