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combination analog speedometer tachometer mph km
The speed unit is the speed unit of mile, 1MPH=1.609KM\u002FHMILES. That is how many yards are often said. Mph is the abbreviation of mile per hour, which is a unit of measurement for speed, expressing miles\u002F hours. Everyone commonly calls it "mai", 1 mile = 1.609344 kilometers\u002F hours. The relevant information about the car dashboard is as follows: 1. Introduction: The car dashboard is a device that reflects the working status of each system of the vehicle. The common ones are fuel indicator light, washer fluid indicator light, electronic throttle indicator light, front and rear fog light indicator lights and warning lights. 2. Speedometer: The speedometer actually consists of two tables. One is the speedometer and the other is the odometer.
Tachometer: The unit of measure printed on the tachometer, usually RPM (revolutions per minute), represents the current engine speed. Depending on the type of engine, the measurement range of the tachometer is generally 0 RPM ~ 7000 RPM. Generally, the scale above 6000 RPM is marked with red color, which we call "red zone". Try to avoid running the engine in the red zone speed range for a long time, because too high engine speed is harmful to ordinary engines. Of course, most of the current new cars use electronic devices to automatically limit the occurrence of excessively high speeds.The tachometer is not designed to be seen by novices. Novices don't need to pay attention to the value of the tachometer during driving, and they can add or subtract gears according to the road conditions.
Speedometer: The unit of measurement is printed on the speedometer, usually KM/H (kilometer per hour), and the unit of measurement for some imported car speedometers is MPH (miles per hour, which is commonly known as "mile"). The tachometer value indicates the current vehicle speed.The tachometer indicates how fast the engine crankshaft is rotating, and the speedometer indicates how fast the car is going. The unit of the tachometer is rpm and the unit of the speedometer is kilometers per hour. The information shown in the two tables is completely different. All car engines have a speed when they work. In fact, most drivers do not pay attention to vehicle speed information while driving. But many professional drivers always pay attention to speed when driving. Many cars don't have a speedometer, just a tachometer. Some novice drivers pay attention to the tachometer when driving, because most novices need to look at the tachometer to change gears. All car engines have a relatively economical rev range. When driving a car, if the engine speed can be kept within a reasonable speed range, the fuel economy of the car can be improved. When driving intensely, it is necessary to delay shifting to allow the engine to reach the high-speed zone, because only in this way can the engine output maximum power. But the higher the engine speed, the higher the fuel consumption and the greater the wear and tear. Generally, driving in urban areas rarely speeds up, and there is no need to speed up when cruising on the highway. But when overtaking, you need to increase the speed. It is recommended that you do not let the engine run at high speed for a long time when driving, which will increase the wear and tear of the engine.
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