Sarat Ghosh

Dr Sarat Ghosh is vice president R&D at Himadri Speciality Chemical and CTO of Birla Tyres (DBRL). He has 32 years of experience and has worked at JK Tyre, PCBL, Apollo Tyres, Kesoram Industries and Birla Tyres. He has vast experience in tire technology, including compounds, design, simulation and process and also in the product development of TBR, PCR, OHT and OTR tires. He graduated from the University of Calcutta, gained his master's from IIT-Kharagpur, his PhD from MS University, Baroda, and his advanced management program from IIM-Bangalore. He has published papers in Rubber Chemistry and Technology and Tire Science and Technology.

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Presentation

Passenger EV tire performance optimization through an integral approach: construction, tread pattern and compound

Optimization of passenger EV tire performance by connecting three dots: tire construction, tread pattern and compounds. The major challenges are high instant torque, higher weight and longer braking distance. The unique requirements include a stronger carcass, higher durability, low RR, reduced noise and high grip. A reinforced shoulder, multilayer carcass and stiffer sidewall region provide a higher structural strength. High grip and improved aquaplaning, reduced noise and a lower RR are achieved by an asymmetric directional tread pattern, variable pitch with special sipes and a larger footprint with uniform pressure distribution respectively. Blends of natural rubber carbon black and silica silane compounds together with a resin system provide robust, durable, low RR and high grip tread. A resin-reinforced carbon silica sidewall and apex compounds provide a higher stiffness.