What is a Car Tachometer? Its Types, Functions, and How It Works
A car tachometer is a device that measures the engine's rotation in a car in RPM (Rotation Per Minute). This way, car users can measure the danger and safe points in the car. In the automotive world, car tachometers come in various types. To learn more about car tachometers, let's pay attention to the following information.
What Is a Car Tachometer?
As explained earlier, a car tachometer is a device that measures the engine's rotation in a car. The tachometer consists of several components, namely the RPM indicator needle and the RPM display numbers. The RPM indicator needle functions to show how the speed of the RPM rotation in the car.
When the car is running, the indicator needle will automatically move following the car's rotation direction. Meanwhile, the numbers on the tachometer indicate how high the RPM is in the car. These numbers are usually installed on the car's dashboard and are located next to the speedometer. The tachometer indicator typically has numbers from 0 to 6 as indicators of the car's safe and danger points. The numbers 0 to 6 are multiplied by 1000 to determine the car's RPM conversion.
Read Also: Here Are the Differences Between Speedometer, Odometer, & Car Tachometer
Types of Car Tachometers
There are several types of car tachometers on the market that you need to know. Here are the complete types.
1. Optical Tachometer
This type of tachometer can measure the engine's rotation speed without being directly connected to the engine. This is because the optical tachometer has optical sensors and magnets that function to identify the movement of one of the engine components. The optical tachometer is a popular type among car owners due to its accurate calculations and no installation process required.
2. Gear Rotor Tachometer
As the name suggests, this type of tachometer uses rotating gears, wheels, and magnets to measure the car's RPM. Additionally, the gear rotor tachometer is also equipped with additional sensors such as HES (Hall Effect Sensor) and VRS (Variable Reluctance Sensor).
3. DC Tachometer
The DC tachometer utilizes DC electric voltage as the energy source for measuring the car's RPM. This type of tachometer has coils and magnets as conductors of DC electricity in the RPM conversion process.
Functions of a Car Tachometer
The functions of the tachometer in a car are as follows.
1. Measuring Engine Rotation Speed
As explained earlier, a car tachometer is a device that measures the engine's rotation in RPM. This way, the car driver can maintain the engine's rotation speed according to the desired distance and align the engine's performance.
2. Monitoring Gear Shifts in Manual Transmission
In cars with manual transmission, the tachometer functions as a gear shift monitoring tool.
3. Facilitating Speed Control
The tachometer also helps drivers drive at low speeds with stable acceleration. Additionally, in automatic transmission cars, the tachometer optimizes engine rotation to produce optimal car performance and quick acceleration.
4. Engine Problem Indicator
The tachometer also serves as an indicator of problems in the car's engine. With the tachometer, car owners can detect engine issues early on.
How a Car Tachometer Works
A car tachometer works when the car is running. When the car moves, the indicator needle will follow the car's rotation, and the display numbers will move according to the engine's rotation. The faster the engine rotation, the higher the value displayed on the indicator numbers.
This is a complete review of car tachometers. Given its important functions, immediately service this component at the official Daihatsu workshop if any damage occurs.
