Patent ID: 6561161
Filing Date: 2003-05-13
Classification: F02D

Abstract:
A throttle valve configuration having an emergency air device for an intake system of an internal combustion engine having an intake duct with a wall, the throttle valve configuration comprising:a throttle valve and an additional valve rotatable about a common axis in the intake duct of the internal combustion engine; a restoring spring for providing a force; an additional spring for providing a force between said throttle valve and said additional valve; a drive providing a force for commonly adjusting said throttle valve and said additional valve in an opening direction counter to the force of said restoring spring; and an emergency air opening penetrating said throttle valve; said additional valve being capable of rotating relative to said throttle valve about a predefined emergency air release angle such that when said drive fails, said restoring spring moves said additional valve, counter to the force of said additional spring, out of an emergency air shut-off position in which said additional valve closes off said emergency air opening and into an emergency air release position in which said additional valve releases said emergency air opening so that the internal combustion engine can be supplied with sufficient internal combustion air enabling emergency operation.