Is it normal to have a speed of 120 km/h with an engine speed of 3500 rpm?
1 Answers
A speed of 120 km/h with an engine speed of 3500 rpm is not normal; this rpm is relatively high. Generally, most cars maintain an engine speed of around 2000 rpm at 120 km/h. When driving at high speeds, the transmission is usually in a high gear, which helps reduce engine speed and save fuel. Engine speed constantly reflects the working condition of the engine. If the speed is too low, fuel combustion in the cylinders may be incomplete, leading to carbon buildup in the engine, which can cause significant damage over time. Conversely, if the speed is too high, it can result in greater engine wear. Engine speed refers to the number of revolutions an object makes around a circular path per unit of time (different from frequency), with common types including rated speed and maximum speed.