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A method and an apparatus for controlling at least one throttle cross section in a control line, in particular in a line carrying operating medium for an internal combustion engine, such as an air bypass around the throttle valve of the engine. The apparatus includes an electric control motor, by me

A method and an apparatus for controlling at least one throttle cross section in a control line, in particular in a line carrying operating medium for an internal combustion engine, such as an air bypass around the throttle valve of the engine. The apparatus includes an electric control motor, by means of which a throttle device having a circular-segmental control section can be rotated. The control section is rotatable in a control opening intersecting the control line, and the control line and control opening are connected with one another by a throttle opening which has limiting faces. When the control motor is not excited or if the control motor should fail, the control section is rotated by a spring element against a stop, into a position in which a control edge together with the limiting face opens a first throttle cross section, which is sufficiently large to supply the engine with a sufficient quantity of air for the prevailing situation.

대표청구항 ▼

A method for controlling at least one throttle cross section in a control line carrying an operating medium for an internal combustion engine by means of an electric control motor which actuates a throttle device counter to a spring element related to said throttle device in order to control a size

A method for controlling at least one throttle cross section in a control line carrying an operating medium for an internal combustion engine by means of an electric control motor which actuates a throttle device counter to a spring element related to said throttle device in order to control a size of a throttle cross section which controls flow of said operating medium, wherein said throttle device, is movable by a spring element into a position in which it rests on a stop and a first throttle cross section is opened when said control motor is unexcited, and upon excitation of the control motor, the throttle device is actuatable in such a manner that said first throttle cross section is closed and after an intermediate adjustment path (s1-s2), during which said first throttle cross section is closed, during further movement of said throttle device a second throttle cross section is opened while said first throttle cross section continues to remain closed. An apparatus for controlling at least one throttle cross section in a control line carrying an operating medium for an internal combustion engine, comprising an electric control motor, a control spring, a throttle device actuatable by said electric control motor counter to said spring element in order to influence an opening size of said at least one throttle cross section, a shaft in said apparatus, a control section in the form of a circular segment rotatably supported about said shaft relative to a control opening which intersects said control line and which serves as a throttle device, said control section being rotatable by means of the spring element into a position in which it rests against a stop and opens a first throttle cross section connecting the control line upstream of the control section with the control opening when the control motor is not excited, and said control section is rotatable upon the excitation of said control motor such that within an intermediate adjustment range (s1-s2) said control section closes each throttle cross section and subsequently thereto opens only a second throttle cross section, said second throttle cross section being formed in the intersection of the control line and the control opening.