car tachometer for sale

• 2022-01-26

Car tachometer for sale : Tachometer wholesale, promotion price, origin and source of goods from Nanjing Hemu Auto Parts with high quality and low price.

The tachometer of the car is the speed indicator multiplied by 1000 or 100, that is, the speed of the engine per minute. For example, when the engine is idling, it is 700-110r / min, i.e. 700-1100 rpm. If the speed reflects the overall working conditions of the vehicle, the speed reflects the working conditions of the engine. It is one of the most important parameters for starting.

Normal parameters of automobile tachometer:

1.Start: 1500-2000r / min round start, the cold start speed should not be too high, because the lubricating oil of the cold start engine cannot reach the upper part of the engine, and too high speed will cause serious wear; If it's a hot start, you can use a little higher speed, so it's a strong start.

2.Shift: it is only applicable to manual shift, and it is more suitable to shift at about 2500r / min. At this time, the shift is often stable and powerful, and the economy of the engine is relatively good. If you need fast acceleration, you can choose to replace the gear at more than 3000 / min., At this time, the driving force is more superior.

3.Turbocharging: turbocharging is to exhaust the rotor through the exhaust gas at high speed, so as to increase the air flow pressure in the intake pipe. The working conditions of the turbine are better at about 1800r / min, the engine power begins to increase significantly and does not work at low speed.

Each car is different. The machine speed during automatic shift during normal driving is called the shift range. If you step on the accelerator again. Generally, the gear won't be upshifted until after 3000 revolutions. When you step on it completely, the gear won't be upshifted until the speed reaches the red line area (this setting principally replaces the function of s gear). On the negative, if you step on the accelerator sluggishly, the gearbox will rise to the coming gear at the foremost when the speed is lower than 2000, so as to meet the motorist's intention and save energy. During normal driving, the shift timing is generally 2400 RPM of the machine, and the gear will rise to gear 2, 3, 4 and 5 when the speed is 20, 40, 60 and 80 yards independently. The gearbox isn't an incommutable fixed shift timing. It can realize the shift in advance or detention according to your intention.When the speed is 3000-4000, it should be between third and fourth gears. At this time, the speed may be affected by the change of vehicle speed due to business and other reasons. Under normal circumstances, the transmission will judge that there's no need to downshift, that is, it'll not shift until the speed drops to 2500 or indeed lower.