Patent ID: 7572055
Filing Date: 2009-08-11
Classification: G01K

Abstract:
1. An outside air temperature determination apparatus disposed in a vehicle, comprising: an outside air temperature detection means for detecting an outside air temperature; a control means having a first determination processing portion which performs a first determination processing to obtain a determination value based on the detection temperature detected by the outside air temperature detection means; and a speed detection means for detecting a speed of the vehicle, wherein the control means includes a second determination processing portion which performs a second determination processing to predict a real outside air temperature based on a variation on the detection temperature detected by the outside air temperature detection means and to obtain a determination value based on the predicted outside air temperature; and controls the second determination processing portion to perform the second determination processing prior to the first determination processing to be performed by the first determination processing portion when the speed detected by the speed detection means is accelerated equal to or greater than a predefined speed from a speed lower than the predefined speed.