• Pratibha R. Walunj
• Bhagyashree H. Dhage

While designing the engine, the engine of vehicles are generally tuned at sea level. However, in many of the countries the engine operation is performed at higher altitudes than that of the sea level. The air densities at different altitude have significant effects on the fuel consumption and other engine parameters. Theoretically in case of gasoline engines, the higher altitude c auses to lower fuel consumption. It is because of lower throttle frictions results from wider throttle opening. From other side, because of lower density at higher altitudes, the vehicle aerodynamic gets changed and this also leads to lower fuel consumption. In case of air vehicles, as the altitude increases there is considerable reduction in ambient temperature, and accordingly the thermo physical properties of air as well as coolant changes. It affects the thermal performance of radiator and hence the engine. The respective work studies the effects of high altitude on thermal performance of radiator of air vehicle engine. The impact of altitude is studied by calculating the required and calculated effectiveness of radiator of 65 HP rotary engine by considering analytical as well as experimental evaluation.

"Effects of Altitude on Performance of Automotive Radiator and Hence on Engine", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.858-863, April-2019, Available :http://www.jetir.org/papers/JETIRBB06164.pdf

"Effects of Altitude on Performance of Automotive Radiator and Hence on Engine", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp858-863, April-2019, Available at : http://www.jetir.org/papers/JETIRBB06164.pdf