Electronic throttle valve apparatus

An electronic throttle valve apparatus comprising:

• a throttle housing having one side installed in an intake manifold of an engine;
• a throttle valve rotatably provided within the throttle housing;
• an air tube fastened to the other side of the throttle housing and fastened to an intake flow line;
• and
• a suction pressure sensor provided in the air tube and configured to measure pressure of an intake air that flows through the intake flow line,
• wherein the air tube comprises:
• a body portion provided in the form of a tube to allow the intake air to flow;
• a sensor fastening portion that protrudes from an outer periphery of the body portion in a radial direction, and includes a communication aperture formed to communicate with an inside thereof to allow the intake air that passes through the body portion to flow therein, the suction pressure sensor being inserted and fastened into the sensor fastening portion;
• and
• a plurality of boss portions that protrudes from one side of the body portion toward the throttle housing, and are radially formed to be fastened to the throttle housing;
• wherein the boss portion comprises a first hoes portion and a second boss portion respectively formed in diagonal locations around a direction in which the intake air flows in the body portion, and three-point projections are formed to project in the radial direction on outer peripheries of the first boss portion and the second boss portion;
• and
• wherein a location of the three-point projection formed on the first boss portion and a location of the three-point projection formed on the second boss portion are different from each other with respect to circumferential directions thereof.