digital tachometer hour meter

• 2022-06-10

Nowadays, the degree of automobile electrification is getting higher and higher. Automatic transmission, reverse imaging, electronic assistance and other equipment have been completely popularized to household vehicles.Yes, and many vehicles have been able to approach the form of semi-automatic driving. At this time the car There are many parts or functions that are relatively backward, such as CD player, mechanical key and tachometer. I believe many people are confused that almost no one will notice the tachometer, but why put it in the most prominent position? Some sports cars even highlight the tachometer. I believe that the design of the car must have its reason. Let's take a look at the functions of the tachometer?

Electronic tachometer: it works according to the principle of magnetic stability. It receives the pulse signal generated when the primary current in the ignition coil is interrupted and converts this signal into a displayable speed value. The faster the engine speed is, the more pulses are generated by the ignition coil, and the greater the speed value displayed on the table. Cars are generally electronic tachometers, including sail based needle type and LCD digital display type. There is a digital integrated circuit in the meter, which drives the pointer to move or digital display after calculating the ballast voltage pulse transmitted from the ignition coil.

A row of numbers on the digital tachometer is an hour meter, a one-way counter. The car odometer unit is km/h. The automobile odometer actually consists of two meters, one is the speedometer, the other is the odometer. Odometer is a kind of digital instrument, which is meshed with the worm on the transmission shaft of speedometer through the transmission gear of counter drum.

For example: the engine is generally 700-1100r/min at idle speed. What is the function of automobile tachometer? So much has been said above. Many novice friends don't know the function of the tachometer at all. Let me tell you in secret.

The specific functions are as follows: 1. Observe whether the car starts. I believe many car owners have encountered a problem. That is, they have been sitting in the empty car of Machang, so they have forgotten whether the car started. I tell you quietly that I have also encountered this situation several times, because the overall silence of the car is really good.