Apparatus and method for judging flap failure in active air flap system

摘要

The present invention relates to an improved active air flap flap fault determination apparatus and method to reduce cost and accurately diagnose faults by changing the method of detecting faults such as flap breakage of an active air flap (AAF). Instead of a magnet-type sensor that was individually installed for each flap as in the prior art, only one set of sensors and related parts using light such as infrared light can be used to detect when any one of a number of flaps fails. I want to achieve savings. In addition, as in the prior art, it is intended to perform accurate fault diagnosis by improving the fault detection error when several flaps are connected to one flap shaft. According to an aspect of the present invention, a light emitting source positioned on one side of the flap in an active air flap including at least one flap; A light-receiving sensor positioned on the side opposite to the position of the light-emitting source of the flap; And means for passing or blocking light irradiated from the light-emitting source and proceeding to the light-receiving sensor by opening and closing the flap.