tachometer in a car

• 2022-10-24

The engine tachometer in a car is used to let the driver know the working state of the engine, whether at low speed or at high speed. If the engine turns to the red line at high speed for a long time, reaching more than 7000 revolutions, or even more than 8000 revolutions, the engine is prone to high temperature, and the temperature is too high, resulting in engine damage! Automobile tachometer is a very important instrument. It can intuitively and clearly express the vehicle speed, reflect whether the engine runs well, and match the gear, accelerator and speed of the engine and transmission.

Our car engine tachometer only shows our current engine speed, so that we can observe the current engine speed at any time and keep it within a reasonable speed when driving. As the engine tachometer rarely observes our engine tachometer in our daily use and rarely observes our engine tachometer, Rolls Royce is particularly bold to change the engine tachometer to a "power reserve meter", which shows that the driver can control how much power our car has. A few automatic transmissions and hybrid vehicles do not have engine speedometers, but directly give up and replace speedometers. For example, 15 BYD F0 low configuration vehicles do not have speedometers, and the previous generation Camry hybrid vehicles use the driving schedule, such as the three modes of ordinary, economic and sports.

The car tachometer can visually observe the digital pulse signal transmitted by the engine through the sensor, and then express it through the tachometer, which can better provide driving assistance for the driver. For example, when we overtook, we had already reached 100km/h, and we did not know whether we could pass smoothly. At this time, we looked at our Rolls Royce power reserve table, and it might also show that 50% of the power was at your disposal. At this time, we were very confident to step on the accelerator and go all the way.

Not using engine tachometer is not a cost consideration. Without a car engine tachometer, it is not absolutely impossible to drive a car. The main reason is the manufacturer's own design and consideration. For the current automatic transmission vehicles, the appropriate gear matching with the core will be intelligently switched according to the throttle opening, so some cars can understand that there is no tachometer. For example, if you don't have a tachometer, you can't feel whether the car has started.