ACTIVE BAFFLE DEVICE OF A VEHICLE FUEL TANK, CAPABLE OF REDUCING FLOW NOISE OF FUEL BY GENERATING FREQUENCY CORRESPONDING TO A REVERSED PHASE OF THE FREQUENCY GENERATING THE FLOW NOISE OF THE VEHICLE FUEL TANK

摘要

PURPOSE: An active baffle device of a vehicle fuel tank is provided to reduce inside noise of a vehicle by efficiently reducing all kinds of fuel flow noise generated in various frequency bands.;CONSTITUTION: An active baffle device of a vehicle fuel tank comprises a moving baffle(20), a baffle controller(30), a controller(40), an actuator(50), and a piezoelectric sensor(60). The moving baffle is installed inside a fuel tank(1) in order to move along a guide device(10) when an external force is applied. One end of the baffle controller is connected to the guide device, and the other end is connected to the moving baffle in order to control movement of the moving baffle. The controller calculates a signal about fuel flow pressure stored in the fuel tank into a fuel flow frequency and selects a control frequency corresponding to a reverse phase of the calculated fuel flow frequency. The actuator drives along a control signal of the controller and supplies fluid pressure with the baffle controller. The piezoelectric sensor is installed in the fuel tank in order to detect the fuel flow pressure and transmits the signal about the fuel flow pressure to the controller.;COPYRIGHT KIPO 2013;[Reference numerals] (70) Fluid tank