The purpose of this presentation is to promote common electronic presentation format within R&A for all R&A presentations. It is also in response to the directive issued by Nick Scheele on August 27, 2003.
Dr. vora ppt chapter 3 emission control
EMISSIONSCONTROL INS.I. ENGINES Dr. K. C . Vor a
MEASURES TO CONTROL EMISSIONSNon technical control measures:• Good town planning (low sky scappers/satellite cities)• Congestion charges, area licensing scheme, parking charges, phasing out of vehicles, etc.• Proper traffic pattern & road networking (eg. Flyovers)• Public awareness (energy efficient purchase, driving habits, car pooling)• Efficient public transport/transit system (Bus Rapid Transit)• Promote cycling/walking/Bicycle Lanes/2 Wheeler Bridges• Proper maintenance (I&M program: Burari))• Prevent Adulteration of fuels• Living with plants.
MEASURES TO CONTROL EMISSIONSTechnical control measures:Clean Fuels / Alternate FuelsOptimal design of enginesOptimization of drive line to improve fuel efficiency `Retrofitment of new technologiesAfter treatment.
EMISSION CONTROL DEVELOPMENTON GASOLINE ENGINE FOR THE PAST DECADE
EMISSION CONTROL DEVELOPMENTON GASOLINE ENGINE FOR THE NEXT DECADE
3 vs 4 CYL ENGINE CONFIGURATION Bore x Stroke = 77 mm x 84 mm Bore x Stroke = 84 mm x 90 mm 0.375 x 4 = 1.5 ltr 0.5 x 3 = 1.5 ltr 96 884 cyl φ 84 3 cyl φ 77 115 108 375 mm 310 mm Particulars 3 cyl engine characteristics over 4 cyl ( for equivalent total displacement ) Length Lower (better for packaging) No of components Lower Weight Lower Cost Lower (because of reduced no. of components) Friction Lower (because of reduced no. of components) Volumetric efficiency Better (because of larger bore) Combustion Better (because of larger bore) NVH & Stiffer crankcase but poor balancing. Balancing primary & secondary couples will be balanced 8 Based on above, a 3 cylinder configuration is suggested
Technology Options for a Sustainable Environmentally Friendly Mobility
Gasoline Engine Technologies•MPFI • precise control of fuel at all operating modes such as acceleration, idling, altitude, high and low temperature operation and enrichment based on load.•3-Way Catalytic Converter • Greatly reduces all three emissions of CO, HC and NOx • Close control of air fuel ratio is required through close loop with lambda sensor•Variable Valve Timing - VVT • Improvement in fuel consumption • optimizes intake and exhaust valve actuation • added torque • reduces internal pumping losses • reduces production of the pollutant Nox•EGR helps to reduce NOx.•OBD helps warning the user ofmalfunctioning of the system and its