Every car has several meters or counters that can be found on the dashboard. First of all, the speedometer that indicates the exact driving speed. We also know the counter that keeps track of the tank content. In addition, some clocks, the total mileage, gear indicator, etc. Finally, every car also has a tachometer, but what are the revs of the car? A tachometer 1,2,3,4,5,6,7 (x1000) displays the number of revolutions of the engine. It’s really nothing more than the number of revolutions of the crankshaft per minute.
The speed varies greatly per type of car, engine and especially the power. A petrol engine is constructed differently than a diesel engine. For example, the moment an engine makes 2000 revolutions, this means that the crankshaft rotates completely 2000 times per minute. A car with a lot of power makes more revolutions and automatically has more revolutions per minute. Cars from 10 to 20 years old often rev higher. Nowadays, the technology has been developed in such a way that you will receive a message on the dashboard with upshifting from gear 2 to 3, in order to keep the speed low. This zone is often colored green. When your car makes too many revs (often 6, 7+) the counter will be in the red, this is undesirable and bad for the engine.
The higher the revs, the more the engine will consume. It is better to change gears earlier, this ensures lower fuel consumption and is also better for the engine. Please note, when the injectors are dirty, you will experience a stuttering car when you shift up quickly. Cleaning the injectors is a good option in that case. Don’t have a gear indicator? Then try to shift between 2000 and 3000 rpm.
Conclusion: The speed indicates the number of complete revolutions of the crankshaft per minute. And is therefore an indication for switching.