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EMISSION CONTROL FOR IC ENGINE POWERED GENERATOR SETS IN INDIA
B. P. Pundir, Indian Institute of Technology, Kanpur, India

ABSTRACT
Acute power shortage in several states in India has resulted in large proliferation of small portable generator sets in the medium to large cities causing severe air pollution problem in the shopping and residential areas. However, there are no quantitative studies to assess their impact on air quality. To combat this problem, the Central Pollution Control Board, MOEF, Govt. of India has notified emission regulations for the SI engine generators (0 to19kW output) from the year 2000/01. For the diesel gensets (0 to 800kW output) emissions and noise standards are being implemented from 2004/2005. In this paper, the emission standards, emission levels from the current generators and technology to meet the standards are presented. The 2-stroke SI engine gensets require catalytic exhaust after-treatment to meet the present standards. In future, the kerosene-fuelled generators would require secondary-air injection coupled with exhaust after-treatment. The diesel gensets require considerable engine modifications to meet the NOx and PM standards. The main problem however, is in implementation of the regulations particularly for the diesel generators of 3 to 10 kW that are being assembled in the secondary market using engines meant for agricultural purposes and sold without going through any emission certification process. Another important aspect is the in-service emission control, as no mechanism exists for its monitoring and rectification. In the paper, suggestions are made to address some of these issues.

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