Abstract
This article describes the power train design specifics in Formula student race vehicles used in the famed SAE India championship. To facilitate the physical validation of the design of the power train system of a formula student race car category vehicle engine of 610 cc displacement bike engine (KTM 390 model), a detailed design has been proposed with an approach of easing manufacturing and assembly along with full-scale prototype manufacturing. Many procedures must be followed while selecting a power train, such as engine displacement, fuel type, cooling type, throttle actuation, and creating the gear system to obtain the needed power and torque under various loading situations. Keeping the rules in mind, a well-suited engine was selected for the race track and transmission train was selected which gives the maximum performance. Based on the requirement, a power train was designed with all considerations we need to follow. Aside from torque and power, we designed an air intake with fuel efficiency in mind. Wireless sensors and cloud computing were used to monitor transmission characteristics such as transmission temperature management and vibration. The current study describes the design of an air intake manifold with a maximum restrictor diameter of 20 mm.
Highlights
SUPRA SAE India is an annual national level Student Formula Category car competition conducted by Society of Automobile Engineers India (SAE India) with support from Maruti Suzuki
It is a global platform for undergraduate and postgraduate students to demonstrate their technical skills and talent by applying their engineering skills and competing with other institute participants in developing a student formula category vehicle according to defined instructions and safety precautions. e vibration decoupling rate and frequency of the powertrain mounting system are investigated utilizing rigid body dynamics and energy techniques to improve the powertrain mounting system’s vibration isolation capabilities, with the powertrain of a front wheel drive car as the research object [1, 2]. e subsystem transmits the power developed by the engine or motor of automobiles to the wheels of the motor vehicle to move the motor vehicle forward or backward
Let us assume the mass of the vehicle(M) is 350 kg, wheel radius is 0.26 m, velocity of the vehicle (v) is 60kmph, and rolling resistance coefficient is 0.02, this varies based on the type of road and tire, gradient angle (α) is 25° depends on the road, drag coefficient (Cd) is 0.7 depends on the car, frontal area (A) is 0.617 m2, density of air (ρ) is 1.225 kg/m3, and gravity (g) is 9.81 m/s2
Summary
SUPRA SAE India is an annual national level Student Formula Category car competition conducted by Society of Automobile Engineers India (SAE India) with support from Maruti Suzuki. Ere are multiple mechanisms available like belt, pulley drive, direct mesh gear system, and chain drive Various drags such as aerodynamic drag as well as friction resistance were taken into consideration and their empirical relations according to the aerodynamics of the vehicle were evaluated. For Yamaha YZF R3, it consists of 2 cylinders, and the design of a single air intake with two runners is complicated. Another factor is considering the availability cost of the engine, we did not opt for these two engines. Honda CBR250R &Yamaha WR250R, these two engines contain a single cylinder, but the output power and torque are low compared to KTM RC390
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