Patent ID: 8973432
Filing Date: 2015-03-10
Classification: G01M

Abstract:
1. A gear shift shock evaluation apparatus of an automatic transmission mounted in a vehicle, comprising: a front-rear acceleration detection unit adapted to detect a front-rear acceleration of the vehicle; an up-down acceleration detection unit adapted to detect an up-down acceleration of the vehicle; a track-length-per-unit-time calculation unit adapted to calculate a length of a track obtained by plotting the detected front-rear and up-down accelerations on a three-dimensional space along a time axis within a period from gear shift start of the automatic transmission to gear shift end, and calculate a track length per unit time by dividing the length of the track by a time interval from the gear shift start to the gear shift end; and a gear shift shock evaluation unit adapted to evaluate that a gear shift shock is larger as the track length per unit time is longer.