A tachometer is the name of a part found in car engines. Among the hundreds of parts in vehicle engines, the tachometer is just one, but it helps indicate dangerous and safe levels. For this reason, its use, maintenance, and control are of great importance.
Unlike old tachometers, more advanced tachometers can be used in various fields. These tachometers can be classified as analog, digital, contact, contactless, time-measuring, and frequency-measuring tachometers. Each of them is used in different areas due to the varied features they contain.
What is a tachometer and what are its types?
The tachometer is used to measure the rotational speed of the component called the crankshaft. It can also be called a type of sensor device. The tachometer, which shows vehicle owners the number of revolutions per minute (RPM), is of great importance for engine safety.
Currently, the most commonly used type of tachometer is the digital tachometer. These tachometers display the read data using an LED or LCD screen and store the information with the help of memory. Through memory, statistical operations can be performed, and the revolutions per minute are calculated, thus allowing proper operation. Due to the dials and needles present in other types, the process becomes more difficult, which is why vehicle and engine manufacturers more frequently prefer digital tachometers.
How does the tachometer work?
The operating principle of the digital tachometer has been simplified to a very basic level. In the ignition system, the spark plug sends data to the tachometer each time an ignition occurs, and electronic tachometers calculate the average voltage based on pulses per minute.
Signals coming from the data detection head are transmitted to the dashboard through a two-wire cable. Through the tachometer, the vehicle’s computer automatically selects the speed and acceleration settings. If these settings are not made by the computer, long-term use and high-speed driving of the vehicle will cause major problems for its lifespan. Using the tachometer prevents these problems.
