Performance Tests And Analysis Of Three Fuels Combusted In The Parking Heater

At present, it is urgent to reduce exhaust pollutants and look for alternative energy resourse. Ethanol fuel as the alternative vehicle fuel has advantages of good antiknock property, high oxygen content and low exhaust pollutant. This thesis study the burning and thermal performances by combusting three fuels (gasoline, E50, ethanol) in the parking heater. The burner is the core part of the heater. Study the variety of the temperature inside the burner by combusting three fuels under different conditons, analyse the relationship between combustion temperature and excess air coefficient, and study the mechanism and regulation of exhaust pollutants, then put forward exhaust emission assessment method. Otherwise, this thesis studies the thermal performance of the heater by combusting three fuels, and analyses the change of exhaust temperature, valid power and effective heat efficiency by contrast. As a result, the valid power and combusting temperature are higher, when the heater combusts the gasoline. But the effective heat efficiency is lower at the same excess air coefficient and the density of exhaust is bigger. When the heater combusts the alcohol fuels, the valid power is lower, but the effective heat efficiency is higher at the same excess air coefficient and the density of exhaust is lower. Ethanol fuel is an ideal alternative fuel. At last, put forward the improvement of effective heat efficiency and the methods of reducing pollution.