Mathematical models for calculating toxic emissions of a bus with a diesel engine

Abstract

An integral part of the general problem associated with improving the design of manufactured cars, maintaining them in working condition, the quality of fuel, lubricants and their economy, improving the road network and organizing the movement of transport vehicles, is their toxicity.

Many researchers have been working on issues of saving fuel and energy resources and reducing engine toxicity, and currently there are a significant number of relevant recommendations. However, simple and fairly effective proposals have yet to be developed.

The task of optimizing the operation of passenger vehicles, taking into account environmental safety, is one of the components of human regulatory activity aimed at improving the urban environment. Thus, reducing harmful emissions from car engines is the most important public and social problem.

When solving this problem, the preferred directions are those whose implementation is accompanied by savings in fuel and other material and technical resources. Known technical solutions for reducing harmful substances in engine exhaust gases are usually associated with changing their designs (this requires significant costs) or using expensive auxiliary devices to neutralize harmful substances (their installation on a car is often accompanied by a deterioration in engine efficiency). In this regard, it is advisable to primarily influence those factors that allow reducing harmful emissions from vehicles (and, accordingly, fuel consumption) during transport work.

The article develops mathematical models for calculating toxic emissions from buses with diesel engines. The results of a machine experiment on calculating harmful emissions using the example of a Mercedes-Benz O530/Citaro C2 bus are also analyzed.

One of the directions for increasing the fuel efficiency and environmental safety of buses is the practical use of rational driving modes. This allows us to consider the article aimed at increasing the efficiency of technical operation of cars by saving fuel and reducing toxicity as relevant.

Keywords: bus, operating conditions, harmful emissions, environmental safety, mathematical models, speed.