Authors: N.V. Savenkov

Title of the article: Method of selection of gear ratios transmission of the N1 category vehicle based on the driving cycle

Year: 2016, Issue: 2, Pages: 64-70

Branch of knowledge: Transport, mine and construction engineering

Index UDK: 629.113.002.3.004

DOI: -

Abstract: One of the most effective directions of reducing operating costs of the transport vehicle is improving its fuel efficiency through harmonizing the engine mode parameters and transmission design parameters in accordance with the driving modes. This paper proposes the method of improving the fuel economy of N1 category vehicle by optimizing of the number of speed ratios of the manual transmission. In addition, the issues of influence of the kinematic parameters of the upgraded powertrain on the traction-speed characteristics of the vehicle are reviewed. The solution of the problems is performed in the study by numerical and experimental methods. The definition of the considered fuel-economic and traction-speed characteristics is performed by numerical simulation of the process of the vehicle movement. The appropriate mathematical models of the speed characteristics of the ICE and the characteristics of resistance to the movement taking into account transient modes were developed on the basis of the series of the stand and the road tests. Based on research findings, the number of the gear ratios was recommended for the GAZ-3302 vehicle with the UMZ-4216 motor. The number of gear ratios provides the improvement of the fuel economy by 4.42% in the New European Driving Cycle compared to the serial transmission.

Key words: Fuel economy characteristics of the car the driving cycle optimization optimization parameters power plant combustion engine gearbox gear ratios speed characteristics of the engine the power of resistance to movement motion modes

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