An indigenous technology for development of cost-effective and energy-efficient engine intake air filters

Students of Indian Institute of Technology Delhi, Ajay Kumar Maddineni won the award for research work of An indigenous technology for development of cost-effective and energy-efficient engine intake air filters. He carried their project work under guidance of  Dr. Dipayan Das.

In automotives, the packing space in vehicular under-hood is shrinking day-by-day at a faster rate with the evolving engine technology. This limits the filtration area available for engine air filters, which causes an increase in local velocity of the airborne particles approaching to the filter media.

 As a result, the particles acquire higher kinetic energy that facilitates them to bounce back from filter surface, re-entrain into air stream, and finally penetrate through the filter media. This ultimately results in higher particle penetration and lower engine life. In the current innovation, an indegeneous and cost-effective solution is provided to the above-mentioned problems associated with the engine intake air filters. A compact engine intake air filter system is designed for motorcycles and the same is analyzed for air flow and particle filtration behaviors. The air filter system consists of a fibrous filter media, which, upon optimal impingement of viscous liquid, exhibits enhanced filtration performance by inhibiting particle bounce and re-entrainment. Further, because of the presence of the viscous films, a large number of dust particles get accumulated onto the air filters. Also, the dust particles are deposited quite uniformly onto the surface of chemically-treated air filters, unlike the untreated air filters where the dust particles form dendritic structures. As a result, the pressure-drop and service life of chemically-treated air filters are found to be superior to untreated ones. Consequently, the air filters developed in this work are likely to offer increased service life by 1.5-1.8 times, decreased fuel consumption by 20 litre and reduced CO2 emission by 50 kg per motorcycle for a ride of 12000 km before replacement of the filters.


Dr. Harsh Vardhan, Minister of Science and Technology, awarded the Gandhian Young Technological Innovation (GYTI) Appreciation to Ajay Kumar Maddineni , Indian Institute of Technology Delhi at the GYTI 2018 Awards function held at Rashtrapati Bhawan on March 19, 2018.

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