Car diagnostics by indicator fuel consumption in units

Abstract

The development of automotive technology in the direction of the production of cars, improving their quality, reliability and durability at the same time requires the use of new diagnostic methods and algorithms. The paper proposes an algorithm for diagnosing the technical condition of a vehicle's units to change the indicator fuel consumption in% and in l / 100 km spent on mechanical work in the engine, transmission, suspension and transport work. Changes in the technical condition of the units and systems of the car leads to increased energy losses, which ultimately increases fuel consumption and reduces the power of the car. If you control the loss of energy in each unit of the car, then the fuel consumption can be used to diagnose not only the general condition of the car, but also to locate the fault by the units. The aim of the work is to further improve the methodology and develop an algorithm for diagnosing the technical condition of a vehicle to change the indicator fuel consumption and vehicle efficiency. To solve this goal, mathematical dependencies and an algorithm for calculating the indicator fuel consumption and efficiency of the vehicle and by aggregates (indicator and mechanical engine, transmission and vehicle suspension) were proposed. The developed diagnostic algorithm provides an objective assessment of the main energy characteristics and performance indicators of transport vehicles.