Selected issues related to diagnostic testing of hybrid vehicles

International Automotive Conference 2018

Abramek, K.F.^1 ; Prajwowski, K.^1 ; Mozga, L.^1

West Pomeranian University of Technology, Department of Automotive Engineering, Szczecin, Poland^1

关键词: Alternative source;    Combustion engines;    Conventional drive;    Diagnostic measurements;    Diagnostic procedure;    Diagnostic testing;    High voltage batteries;    Vehicle manufacturers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/421/3/032001/pdf
DOI  :  10.1088/1757-899X/421/3/032001

来源: IOP

【 摘 要 】

The increasing emphasis on ecology by the governments of particular countries makes vehicle manufacturers to look for alternative sources of propulsion to meet increasingly stringent exhaust gas emission standards. One of such solutions is the use of a hybrid system in the form of a combination of a combustion engine and an electric motor. Such a combination, together with the possibility of recovering the kinetic energy during braking, makes the vehicle, comparing to the conventional drive, much more friendly to the environment. This technology poses the new challenges in the terms of operation, testing and diagnostic measurements of the hybrid vehicles. Because of the electrical system operating under a high voltage, many service and repair facilities are still afraid of repairing the above vehicles. In this article are discussed the basic safety and diagnostic procedures during vehicle tests on the example of the Toyota Prius of the second and third generation. The following procedures have been discussed: analysis of the operation of the high voltage battery with a diagnostic tester, the recommendations during measurements by means of an oscilloscope for low voltage sensors and the procedure related to disconnecting the power supply of the hybrid system in case of an accident. In addition, more and more specialised measuring devices, dedicated to laboratory units and services, appear in the market every year. Therefore, this article reviews the devices dedicated to repairs of vehicles with the hybrid and electric drive.