High-Accuracy Coastdown Test Method by Distance-Time Measurement: II. Development of a Short Distance Method and its Evaluation

거리·시간 측정에 의한 고정도 타행시험법: II. 단거리 방법의 개발 및 시험

In the companion paper of the present paper, a coast down test method to determine the resistance forces on running vehicle based on the distance-time measurement was explained along with the suggestions to improve its accuracy and testing methodology. In the present paper some of the suggestions discussed previously are implemented and actually road tested to see the applicability of the improved method(short distance method) in the field. From the results. it is shown that the short distance method which requires only 600m long proving ground road gives at least comparable results on the accuracy compared to the original S-t method which requires 2000m. It is hoped that the present method be further refiend to give more accurate results.