tachometer hour meter combination

• 2023-07-21

In recent years, with the rapid development of electronic technology, the electronic level of vehicles has been continuously improving. Various onboard electronic instruments have emerged as the times require. Electronic instruments can accurately reflect the actual operation status of vehicles in real time. Car engines must operate within a fixed speed range, otherwise the machine will be damaged. When adjusting the machine, the speed is also a very important parameter. The hour meter is used to measure the total working time of the car, which is conducive to regular maintenance and understanding of the wear and tear level and service life of the machine. So this design has significant practical significance. Our tachometer hour meter  is combination gauge.

More and more people drive automatic transmission with their cars. Many people do not understand the role of engine tachometer . Today, when automatic transmission is popular, fewer and fewer people pay attention to tachometer with hour meter . However, no matter how fuel powered cars develop, seemingly useless tachometers still have not been eliminated. Today, let's talk about the purpose of tachometers. Let's start with ignition. The speed of a four cylinder gasoline engine usually reaches 80 revolutions per minute to ensure successful ignition, but in order to ensure ignition quality, the actual speed will reach 120. For a large engine like the V6, the speed must reach above 140. Without a tachometer, it is unknown if the engine has a problem. Some cars idle very quietly, and some ambitious people may forget that the car is still starting. In this case, check the tachometer to avoid making mistakes. There is still a start. At the moment of engine start, the speed often reaches 1200 to 1500 revolutions per minute, even higher in cold weather. However, during cold start, the speed should not be too high because the lubricating oil does not reach the upper part of the engine. To reduce wear, it is more appropriate to operate within 2000 rpm. When the engine condition stabilizes, it will drop to 800 at idle. Without a tachometer, there are problems during the starting stage, and we cannot quickly diagnose and eliminate them. This is the use of a tachometer. In addition, the tachometer can also indicate the timing of manual gear shifting. Generally, shifting around 2500 rpm is the smoothest and most fuel-efficient, requiring power to shift above 3000 rpm.