Patent ID: 7523731
Filing Date: 2009-04-28
Classification: F02D,F02M

Abstract:
1. An intake system for use in an internal combustion engine, comprising: an intake manifold connected to a main body of the internal combustion engine and a main intake passage defined therein; said intake manifold having a plurality of parallel branch pipes and a common pipe connected to said branch pipes; a throttle valve connected to said common pipe and openable and closable for regulating an amount of intake air drawn through said main intake passage into the internal combustion engine; and an injector for injecting an amount of fuel depending on the regulated amount of intake air drawn into the internal combustion engine, wherein said intake manifold further comprises an auxiliary intake passage disposed separately from said main intake passage and connected to at least one of said parallel branch pipes in fluid communication with said main intake passage, and an amount-of-air detector mounted downstream of said throttle valve and disposed in said auxiliary intake passage for detecting an amount of intake air drawn into the internal combustion engine.