Main Article Content
The importance of petrol and diesel in the present world is well known to everyone. Thus, their quality plays an important role in functioning of appliances viz; vehicles, airplanes etc. Hence it becomes necessary to check their adulteration as it may affect the performance and also may damage the appliances in the worst possible case. Petrol is generally adulterated with kerosene, as the price of kerosene, distributed through public distribution system is kept low due to social and economic considerations. Petroleum fuels are similar in structure but kinematic viscosity is different. In this method, a spring-mass system guided inside a container like a damped vibration system to find adulteration. Hence damping vibration index number will vary for different fuel samples with same set of oscillations.