Shashikanth Suryanarayanan TR35

Shashikanth Suryanarayanan Assistant Professor, Department of Mechanical Engineering IIT Bombay, Powai, Mumbai 400076 Founder & Director, SEDEMAC Mechatronics Pvt Ltd Separating Decision Making from Actuation Steer-by-Wire with Independent Steering EMS for petrol-powered small engines

Steer-by-Wire (SBW) ,[object Object],Traditional Steering Systems Steer-by-Wire

Steer-by-Wire (SBW) with Independent Steering ,[object Object],[object Object],[object Object],Roadwheels independently steered; Departure from Ackermann Geometry Spread-Eagle Position Knock-knee Position

Aug 8, 2008 /18 A Scorpio Retrofitted with India’s First Steer-by-Wire System ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],Emission Regulations for Small Engines Year 2-wheeler (g/km) 3-wheeler (g/km) CO HC+NOx CO HC+NOx 1991 12-15 8-9 30 12 1996 4.5 3.6 6.75 5.4 2000 2 2 4 2 2005 1.5 1.5 2.25 2 2008/10 1 1 1.25 1.25

Sep 12, 2007 /30 Typical Catalyst Conversion Efficacy Maintaining air-fuel ratio close to stoichiomety  Reduced CO, HC, NO x emissions Fuel-Injection and Accurate Fuel Metering Orchestration of fuel injection and sparking requires EMS EMS: Sensors + Actuators + Control unit (ECU) Design Drivers: High fuel economy, good drivability, low emissions

IIT Bombay Small Engine EMS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Battery Fuel Injector To Spark Plug Electronic Control Unit (ECU) ‏ From Vehicle Sensors Fuel Pump

Shashikanth Suryanarayanan TR35

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Shashikanth Suryanarayanan TR35