What does 1000r/min mean?

[DiEva]

1000r/min is the unit of engine speed. The following are specific details about engine speed: 1. 800/min~1200/min: During cold starts, the idle speed of the ignition engine should be below 800/min or above 1200/min; otherwise, the engine's condition is poor. 2. Below 2000r/min: While driving, try to avoid letting the engine operate below 2000r/min. If the speed is too low, the engine will lack power, and the load on the engine at low speeds can be excessive, causing damage and easily leading to carbon buildup. 3. Above 4000r/min: When the engine operates above 4000r/min, the combustion time becomes shorter, and the fuel does not burn completely, leading to a significant increase in fuel consumption. If driving normally in fifth gear, the speed generally reaches 150km/h, which is already a relatively dangerous speed. 4. 2200~3500r/min: The engine operates most economically and performs best within the range of 2200~3500r/min. During regular use, try to keep the engine speed within this range.