• Effect on Performance and Emission Characteristics of C.I Engine by Preheating of Intake Air Using Heat Wheel
• Author  :  J.T.Manikantha, A.Rama Krishna and B S S Phanisankar
• Pages   :  211-222
• Download PDF
• Abstract

The air pollution is one of the major problems I’m now days throughout the world. The main causes of air pollution are exhaust products of automobiles and industries. Exposure to air pollution can lead to respiratory and cardiovascular diseases, which is estimated to be the cause for 6.2 lakhs early deaths in 2010. To control air pollution from the automobiles, the Indian government implement some emission standards i.e. BSES. Bharat stage emission standards (BSES) are emission standards instituted by the Government of India to regulate the output of the air pollutants from the Internal Combustion Engines. The standards based on European regulations were first introduced in 2000. Progressively stringent norms have been rolled out since then. Up to March 2017 the automobiles are run under the Bharat stage 3 (BS-3). After then Bharat stage 4 (BS-4) were implemented by the Government of India. BS-3 emits are more pollutants (CO, HC, CO2 etc.) to the Environment then BS-4. That is the main reason behind banning the BS-3. In my thesis, I focused on how to control the emission levels as per the BS-4. Heat wheel is a rotary air to air heat exchanger. It comprises porous wire mesh as a matrix material and electric motor for driving wheel. The effect of preheated air on standard diesel fuel engine indicate a good result in performance of engine and on emission control. Higher intake air temperature increases Brake Thermal efficiency and decreases the specific fuel consumption. Easy vaporization and better mixing of air and fuel occur due to warm up of inlet air, which causes lower CO emissions. Better Combustion is occurred due to preheating of intake air, which also causes lower engine noise. The experiment was carried out at different loads (No load, half load, and Full load) at engine speed of 1500 rev/min on single cylinder 4 -stroke variable compression ratio engine. A Test was applied in which the working fuel as pure diesel and blend of diesel and kerosene (90% diesel and 10% kerosene) and results were analyzed. From the results, I observed that by preheating of intake air, emissions are reduced in both the conditions of fuel as pure diesel and blend of diesel and kerosene.

Keywords: CI Engines, Emission Control, BSES standards, Pre heating, blended fuels

Article published in International Journal of Thermal Technologies, Vol.7, No.4 (Dec-2017)