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파워트레인 다이나모를 이용한 후룬기반 4WD 시스템의 연비 특성 평가
이호섭(Hosub Lee),안성범(Sungbum Ahn),박민철(Minchul Pack) 한국자동차공학회 2018 한국자동차공학회 부문종합 학술대회 Vol.2018 No.6
4WD vehicles are better at handling and driving safety than 2WD vehicles, but the weight and power loss of the vehicle will be increased by additional driving devices, resulting in a drop in fuel economy. Therefore research is needed to improve the fuel economy of 4WD vehicles and how to evaluate and validate them. However it is difficult to measure actual improvement rate of fuel efficiency of vehicles through single unit evaluation. And evaluation using a vehicle chassis dynamo is limited to the number of assessments dependent on the cost. In order to overcome these shortcomings of vehicle fuel economy assessment, Hyundai Wia has developed a more efficient analysis of the fuel economy factor of 4WD vehicles and the reliability of the improved fuel economy. Hyundai WIA has developed the 4WD Powertrain Dynamometer (PT Dynamo) to overcome the disadvantages of this assessment and to verify the effective analysis of the fuel economy factors of 4WD vehicles and the reliability of the measures to improve fuel economy. PT Dynamo includes most of the actual vehicle’s driven systems, such as the vehicle’s engine, transmission, 4WD Transfer case, and differential gear. It is also designed to enable simulated driving on the vehicle’s driving load characteristics and tire surface friction models in real time. This study has developed and verified PT Dynamo and evaluated the fuel economy characteristics of 4WD vehicles, and would like to provide a more efficient way to improve fuel economy.
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