The paper is focused on presenting a methodology for measuring power and torque based on diagnostic equipment available in most diagnostic workshops, such as OBD interfaces or the CAN Bus on-board data transmission network, under real-world road conditions. The publication presents an algorithm for calculating the powertrain’s torque and power based on measurements of changes in vehicle speed or acceleration recording during a two-phase road test. The results presented, based on the method described, apply to both the internal combustion and electric vehicle. Common powertrain operating parameters, such as maximum power, maximum torque and the powertrain’s flexibility parameters described in the literature are proposed for the final evaluation of the vehicle’s traction system.
The paper is co-funded by the “DELTA” programme of the Opole University of Technology for researchers in 2021.
Bździuch D. Measurement of engine operating parameters and diagnostic tests of motor vehicles on the VT-2 chassis dynamometer (in Polish). Autobusy 2007;6:560-568. bwmeta1.element.baztech-e4923386-3ba6-4208-9932-e5faf2878296
Energy Agency I. Global EV Outlook 2022 Securing supplies for an electric future. 2022.
Gardulski J. The fifth wheel as a part of a data acquisition system for diagnostic testing of car shock absorbers with vibroacoustic methods. Biuletin WAT 2011:1:83-91.
Graba M, Mamala J, Bieniek A, Sroka Z. Impact of the acceleration intensity of a passenger car in a road test on energy consumption. Energy. 2021:120429.
Haller P, Wróbel R, Dimitrov R, Michaylow V. Introducing new engine performance lab at the Department of Motor Vehicles and Combustion Engines of Wroclaw University of Technology. Combustion Engines. 2013;154(3):549-555.
Hayes JG, Davis K. Simplified electric vehicle powertrain model for range and energy consumption based on EPA coast-down parameters and test validation by Argonne National Lab data on the Nissan Leaf. 2014 IEEE Transportation Electrification Conference and Expo. 2014:1-6.
Kolator B, Janulin M. Methodology for measuring car traction parameters. MATEC Web Conf. 2018;182:02001.
Kubiak P, Krzemieniewski A, Lisiecki K, Senko J, Szosland A. Precise method of vehicle velocity determination basing on measurements of car body deformation–non-linear method for ‘Full Size’ vehicle class. Int J Crashworthiness. 2018;23(3):302-310.
Kuranc A. Vehicle engine power tests using inertial methods (in Polish). Autobusy : technika, eksploatacja, systemy transportowe. 2012:13(10):119-124. bwmeta1.element.baztech-fd47b0d8-256a-48d9-8c7f-72f3c51f7f11
Ligterink NE, van Mensch P, Cuelenaere RFA, Hausberger S, Leitner D, Silberholz G. Correction algorithms for WLTP chassis dynamometer and coast-down testing. 2014.
Mamala J, Graba M, Bieniek A, Prażnowski K, Hennek K, Kołodziej S et al. Evaluation of energy consumption in the acceleration process of a passenger car. Combustion Engines. 2022;190(3):35-44.
Merkisz J, Rymaniak Ł. The assessment of vehicle exhaust emissions referred to CO2 based on the investigations of city buses under actual conditions of operation. Eksploat Niezawodn. 2017;19(4):522-529.
Merkisz J, Mazurek S. On board systems for passenger vehicles (in Polish). WKiŁ. Warsaw 2002.
Mysłowski J. The flexibility of modern spark ignition engines (in Polish). Autobusy: technika, eksploatacja, systemy transportowe. 2011;12(5):307-311. bwmeta1.element.baztech-article-BWAN-0021-0046.
Pielecha I, Pielecha J. Simulation analysis of electric vehicle energy consumption in driving test. Eksploat Niezawodn. 2020;22(1):130-137.
Pielecha J, Skobiej K, Kurtyka K. Exhaust emissions and energy consumption analysis of conventional, hybrid and electric vehicles in real driving cycles. Energies. 2020;13(23):6423.
Prochowski L. Movements Mechanics (in Polish). WKiŁ. Warsaw 2016.
Sapundzhiev M, Evtimov I, Ivanov R. Determination of the needed power of an electric motor on the basis of acceleration time of the electric car. IOP Conf Ser Mater Sci Eng. 2017;252:0120636.
Szpica D. Coefficient of engine flexibility as a basis for the assessment of vehicle tractive performance. Chin J Mech Eng. 2019;32(1):1-9.