The effect of emergency engine mode on the fuel consumption of a passenger car

Abstract

Vehicles with a combustion engine are characterized by different fuel consumption. The aim of the research is to determine the fuel consumption during the operation of the internal combustion engine. Consumption is monitored in the state when the vehicle is without a fault and in the state when the vehicle's engine is operating in emergency mode. The aim of the research is to carry out driving tests on a personal vehicle. The course of fuel consumption is monitored at various sections. In the first section of the route, consumption is monitored when driving in an urban environment, the second section represents driving outside the village and the third section on the highway. With the help of a diagnostic device, it is possible to monitor current consumption data via the engine control unit. The emergency state of the engine is caused by the disconnection of the electronic component that enters into the preparation of the fuel mixture. The cause of such disconnection is the engine being put into emergency mode, which in real operation may mean a drop in engine power and torque. The measurement results actually show an increase in fuel consumption when the engine is working in emergency mode. However, consumption is lower when driving on a highway section. This is due to the vehicle not being able to reach the required speed. The research carried out thus points to the impact of operating a vehicle with an emergency engine condition in relation to fuel consumption.