how to install a tachometer on a car without one

• 2022-04-16

Many people know that cars have speedometers and tachometers when they learn to drive. Especially in the slope rise of subject 2, many people look at the revolution table to carry out the slope rise. Stabilize the speed at 1500, slowly lift the clutch on the slope and start smoothly.

The revolution meter can not only monitor the engine revolution, but also reflect some faults related to the engine gearbox. For example, your car's clutch slips, which can be seen from the tachometer. For example, if there is something wrong with your gearbox, the revolution meter can also reflect it.

There is no tachometer in the van. You can directly replace the instrument. If there is one that directly integrates the tachometer and speedometer (found on Taobao), you must pay attention to the replacement. The speed ratio of the replaced instrument must be the same as that of the original car. Otherwise, the vehicle speed may be inaccurate or the instrument may burn . If you have the conditions, you'd better go to a professional car refitting shop. After all, it's refitting . It's safer to go to a professional car refitting shop . Moreover, it won't be very expensive to refit one.

Rotational speed is the physical quantity of the ratio of the number of revolutions of a rotating body to time. In engineering , it is usually expressed as rotational speed = number of revolutions / time. It is an important parameter to describe the rotational motion of an object. Electricians often need to measure the speed of the motor and its driving equipment, using a portable tachometer. Tachometer is an instrument used to measure motor speed and linear speed. There are many kinds of tachometers . Generally, there are mechanical centrifugal tachometers and digital electronic tachometers.

The tachometer reads the received digital pulse signal (sent by the sensor) directly into the counting port of the CPU after processing, calculates the speed and the corresponding position of the pointer through the software, and then amplifies it through the control port of the CPU to drive the stepper motor to rotate in the positive and negative directions and indicate the corresponding speed value (the pointer is directly installed on the rotating shaft of the stepper motor ). The step of the stepper motor is only 1 / 3 degree.