Strategies and Solutions to Control and Reduce the NOx, HC and CO Levels in Gasoline/Alternate Fueled Engines TVS Motor Company Limited

Format:

Conference/Event

Author/Creator:

Shanmugam, Shanmugam, author.

Contributor:

Anbukarasu, AS

Kathiresan, T.

Naveenkumar, MG

Prabu, K.

Senthilnathan, N.

Vinoth Balaram, R.

Conference Name:

Small Engine Technology Conference & Exposition (2010-09-28 : Linz, Austria)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2010

Summary:

Pollutants are harmful to human and other living beings on theearth. Thus emission reduction plays a very important role in thesurvival of living beings. Hydrocarbons (HC), Carbon monoxide (CO),Nitrogen oxides (NOx) are the emission constituentswhich results in smog, respiratory problems in human beings, acidrain respectively. Hence, Indian government has taken necessarysteps to reduce these emissions and imposed various level of normslike BSI, BSII and BSIII on 2/3 wheeler industries in the year2000, 2005 and 2010 respectively. Presently in India, BSII is inforce and from October 2010 BSIII will be introduced. BSIII 3wheeler norm, the CO emission level is reduced by 44.4% andHC+NOx is reduced by 37.5%.The main objective of this work is to reduce the emissions likeHC, which is due to unburnt fuels, NOx, which is due tohigh engine pressures and temperatures and CO, which is a byproductof incomplete combustion. A serious attempt has been made to complywith the stringent BSIII norm without any compromises in engineperformance levels.The following methodologies are well thought for reducing thestringent emission levels in Gasoline/Liquefied Petroleum Gas(LPG)/Compressed Natural Gas (CNG)-based 2-stroke and 4-stroke3-wheeler engines. Since NOx generation is basicallytemperature dependent, the strategies like retarding the ignitiontiming, reducing the engine compression ratio, AFR (air-to-fuelratio) optimizations are used to reduce the engine temperature andhence to control NOx emissions. As CO is a byproduct ofincomplete combustion, the strategies like secondary air injection(SAI), optimization of catalytic converter (catcon) parameters likevolume, structure, cell density, noble metal loading and washcoats, will burn the unburnt gases and hence reduces the CO.The unburnt fuel, id est, HC is controlled by strategies likeimproving the combustion efficiency by optimal engine, SAI andcatcon designs. BSIII norms are met with the above strategies bykeeping minimal changes in engine with optimal cost impact

Notes:

Vendor supplied data

Publisher Number:

2010-32-0046

Access Restriction:

Restricted for use by site license