Autocare with Damilare: Car Speedometer

 Autocare with Damilare


Car Speedometer


A speedometer is a device used to measure the traveling speed of a vehicle, usually for the purpose of maintaining a sensible pace. Its development and eventual status as a standard feature in automobiles led to the enforcement of legal speed limits, a notion that had been in practice since the inception of horseless carriages but had gone largely ignored by the general public. Today, no automobile is equipped without a speedometer intact; it is fixed to a vehicle's cockpit and usually shares a housing with an odometer, which is a mechanism used to record total distance traveled. Two basic types of automobile speedometer, mechanical and electronic, are currently produced.


A speedometer has 3 purposes/ uses


It measures speed.. In every highway, street, Road, etc.. there is safe to do drive on that particular stretch of road. A speedometer allows you to drive safely on that road.


It can be used to measure a known/ unknown distance. In an emergency, it can be used to measure your fuel tank range. If your fuel gauge is inop, the odometer( a part of the speedometer) can be used to measure distance to empty.


How the speedometer work


When the engine turns over, the driveshaft turns to make the wheels spin round.


The speedometer cable, powered by the driveshaft, turns as well.


The cable spins a magnet around at the same speed inside the speed cup. The magnet rotates continually in the same direction (in this case, counter-clockwise).


The spinning magnet creates eddy currents in the speed cup.


The eddy currents make the speed cup rotate counter-clockwise as well in an attempt to catch up with the magnet. Remember that the magnet and the speed cup are not joined together in any way—there's air in between them.


The hair spring tightens, restraining the speed cup so it can turn only a little way.


As the speed cup turns, it turns the pointer up the dial, indicating the car's speed.


A speedometer is a gauge which tells you the velocity of the vehicle at that moment. An odometer is a gauge that tells you the distance traveled by the vehicle since “new” (or when the odometer was last reset).


The Future


Design firms are currently experimenting with improvements in speedometer readout, an effort to eliminate the moment of distraction needed for a driver to look down and gauge his or her speed. Digital readouts projected onto the windshield appear to be the next developmental step. Some proto-types for these speedometers actually make the readout appear as though it is floating over the engine hood. Because this type of display looks as though it is several feet beyond the steering wheel, drivers will be able to continually monitor speed without having to take their eyes off the road. The mirrors and projection devices used in this system could also be adjusted to suit the driver's position, much in the same way that a rear-view mirror does. In addition, speedometer projection systems will eventually be integrated with navigation tools, allowing directional information to appear with gauge readouts.



Post by: Oriyomi Oluwadamilare Dolapo

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