System able to change cross-sectional area of air intake tube
AssigneeSouthern Taiwan University of Science and Technology
InventorsCHO YU LEE, JUI HUNG CHANG, HUAN YUAN CHEN
Life of this patent
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Abstract
A system able to change a cross-sectional area of an air intake tube is provided. The system is disposed between a throttle valve and an air intake tube of an air cleaner, and includes an adjustment device, a control module, and a stepping motor. The adjustment device includes a retaining seat, a rotating disc fitted in the retaining seat, a plurality of blades disposed on the retaining seat and the rotating disc. After the control module receives signals of an engine and the throttle valve and transmits a control signal to the stepping motor, the stepping motor drives the rotating disc to pivot the blades for controlling the cross-sectional area of an opening of the air intake tube.
Claims3
A system able to change a cross-sectional area of an air intake tube, the system being disposed between a throttle valve and an air intake tube of an air cleaner, the air intake tube being formed with an accommodation trough therein, the system comprising:
- an adjustment device, comprising:
- a retaining seat, the retaining seat having a hollow annular shape and being provided with a plurality of perforations, the retaining seat being locked to the air intake tube;
- a rotating disc, the rotating disc having a hollow annular shape and being provided with a plurality of through holes and a fixing groove, the rotating disc being movably fitted in an annular space of the retaining seat;
- a plurality of blades, the blades being annularly disposed on the retaining seat and the rotating disc to form an opening of the air intake tube, the blades each having holes corresponding to the perforations of the retaining seat and the through holes of the rotating disc;
- and
- a plurality of locking pins, the locking pins being inserted through the holes of the blades and locked to the perforations of the retaining seat and the through holes of the rotating disc respectively so that the blades and the rotating disc can be pivoted on the retaining seat;
- a control module, connected with an engine and the throttle valve and being able to transmit a control signal to a stepping motor after receiving a rotational speed signal of the engine and a pressure value signal of the throttle valve;
- the stepping motor, disposed in the accommodation trough and connected to the fixing groove of the rotating disc through a connecting lever, the stepping motor being connected with the control module, wherein after the stepping motor receives the control signal, the stepping motor drives the rotating disc to turn so that the rotating disc links the blades to control a cross-sectional area of the opening of the air intake tube to be decreased or increased.
Dependencies are inferred from the claim text.