Why Electric Vehicles don’t have a gearbox?
A simple answer to a common question. An Internal Combustion Engine consists of many crucial parts such as a crankshaft and some oscillating parts such as a piston, valves, connecting rods, and springs. The idle RPM (revolutions per minute) for a petrol engine is approximately 1000 RPM and that for a Diesel engine is approx 800 RPM. When RPM increases, the oscillating parts create vibration which has to be balanced by using counterweights, in the form of a calculated and complicated design of a crankshaft. But as the engine approaches a higher RPM, the following problems come to life: 1. Excessive wear and enormous heat generation due to friction of oscillating surfaces like the inner lining of the cylinder and the piston/piston rings. 2. Risk of engine failure due to excessive vibration and continuous output of maximum power. 3. At high RPMs, the springs of the valves are unable to cope up with the speed of valve opening and closing, which might lead to po...