Butterfly valve type throttle valve of internal combustion engine

Abstract

Provided is a butterfly valve-type throttle valve of an internal combustion engine capable of absorbing a dispersion in valve opening degree at closed positions to reduce a leakage of air by solving problems, for example, with a multi-arrayed variable intake valve device in which a plurality of throttle valves mounted on a single turning shaft are opened and closed, a dispersion in valve opening degree is liable to occur at the closed positions due to the mounting errors of the throttle valves on the turning shaft and, accordingly, it is difficult to reduce the leakage of air. A clearance closing member (12) is supported in a floating state along a peripheral edge of a valve body (11) and displaced or elastically deformed to eliminate or reduce a clearance between the clearance closing member and an inner wall surface (2a) of an intake passage.

Dependencies are inferred from the claim text.