Abstract
Road traffic flows on a straight road segment are modelled in this article. The mathematical model of traffic flows has been constructed by using the method of lumped parameters. CO2, CO, CH, NOx, PM regression equations of internal combustion engines’ (ICE) emission has been developed. The accuracy of regression equations is 0.98÷0.99. The article presents assumptions for constructing the mathematical model, description of the mathematical model and gives simulation results. Traffic flow parameters, such as traffic flow concentration and traffic flow speed are presented as modelling results. ICE emission depending on the concentration and traffic flow speed are presented as well.
Highlights
Road transport is one of the main inland transport modes providing house to house services for the people all over the world
This article gives an example of applying mathematical models of traffic flows to simulate internal combustion engine (ICE) emission
An assumption is taken that cars cannot drive on an opposite traffic lane; the road is split into separate traffic lanes and two-way roads are described in the mathematical model as a separate oneway road with one or several traffic lanes
Summary
Road transport is one of the main inland transport modes providing house to house services for the people all over the world. Distribute, industrial freight and work equipment on these network elements Majority of these road vehicles are driven by internal combustion engines; besides practical use they create a lot of problems, such as air pollution with combustion products and particulate metter, noise, vibration, utilization of used oil and other materials, recycling of cars and their parts. The authors discuss vehicle dynamics in the flow, fuel consumption, the impact of environment on the dynamics of cars, touch upon the driver’s model and various driving styles. Jović and Đorić (2010) used programming package PTV Visio to model traffic flows on the urban street network and based on that present vehicle emissions. This article gives an example of applying mathematical models of traffic flows to simulate internal combustion engine (ICE) emission. The article does not investigate combustion reactions of ICE; it uses ICE emission dependences on the vehicle‘s movement speed, which are developed by using the values of emissions
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