Abstract
The purpose of the present study is to investigate the effect of ambient air temperature on the performance of spark ignition engine, and exhaust gas temperature. Various factors taken that affects the performance of four- stroke petrol engine. An experimental study is carried out to investigate engine performance parameters. The experimental results demonstrate that the method proposed to measure the intake ambient air temperature at different engine speeds. The different ambient air temperature was taken (10, 20, 30, 40 and 50°C) at different climate conditions and in the different engine speeds (1500, 2000 and2500 r.pm). The results of experimental shows that increasing ambient air temperature will improve the fuel consumption and thermal efficiency about (14%- 16%) consecutively. It is also shows decrease in the volumetric efficiency with increasing ambient air temperature. However, by increasing sucked air temperature, will lead to increase exhaust gas temperature.
Highlights
The internal combustion engine is a system that converts heat or thermal energyand chemical energyto mechanical energy, which can be used to do mechanical work
3.Results and Discussions: Experiments were performed to study the effect of ambient air temperature on the engine performance parameters and exhaust gas temperature
The results of the measured and calculated data in the experiments are displayed in the following Figures: Figure 2 illustrates the effect of ambient air temperature on brake power at different engine speeds (1500,2000& 2500 r.p.m)
Summary
The internal combustion engine is a system that converts heat or thermal energyand chemical energyto mechanical energy, which can be used to do mechanical work. Temperature has been shown to have a large impact on the formation of several important combustion products or emissions Combustion products such as Nitric Oxides, NOX, unburned hydrocarbons, UBHC, and Carbon Oxides, CO2 and CO, are all important in relation to combustion efficiency and the ever increasing pressure to reduce greenhouse gases produced by internal combustion engines. The tests utilized a Fuji B-34 single cylinder four stroke spark ignition engine with stock timing as the test engine The conclusion from these tests presented by Wilson is that heating the fuel alone has little impact on the overall engine performance. The experimental results indicate that the intake-air temperature, air fuel ratio and EGR rate have significant effect on the maximum in-cylinder pressure, heat release rate, start of combustion and emissions. The aim of this study is to test the influence of increasing ambient air temperature on performance parameters of the petrol engine
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