Odometer information is stored on a small EEPROM chip on the circuit board. 61-62) and the ancient Greek Strabo (11.8.9). The odometer on a car tells how far the vehicle has traveled. The first step in repairing the unit is to remove it from the car. We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. As the white ring rotates, the two teeth starts moving on the outer circular track engraved on the black ring which allows smooth motion of the white ring. Sometimes banging the dashboard on the top while traveling above … An odometer is a tool of measurement used to determine how far a vehicle has traveled. The first tooth of the white ring pushes the black tooth of the white gear while red tooth passes by without making any contact with the red tooth of white gear. When the wheel rotates the driver cable also rotates with the wheels that transfer the motion of wheel to the gear assembly which sets the gears in connected motion. Fig. The only way you'll know if your car hits the 200,000 mile mark is by having a functioning odometer. Fig. An odometer measures and displays the distance travelled by a vehicle by sensing the rotations of a wheel. An odometer is something that measures the total distance a vehicle has traveled. ‘haven’t opened ‘er up and eyeballed it yet. We also share information about your use of our site with our social media, advertising and analytics partners who may combine it with other information that you’ve provided to them or that they’ve collected from your use of their services. This in turn sets the white ring into motion. An odometer, much like a speedometer, can be either purely mechanical or electronic in nature. Artwork: How an electronic speedometer works: 1) A magnet connected to one of the wheels (or more likely to a driveshaft attached to one of the wheels) rotates at high speed. An odometer is designed in two types, mechanical and electronic. Understanding how an odometer works will help explain why their readings can get messed up when tires of different sizes are used. We have colored the teeth of the small white gear as black and red. This is the cheapest but useful odometer correction tool. The odometer is designed in such a way that each kilometer traveled by the car corresponds to a certain number of wheel revolutions. The milometer is worked by a small gear linked to the inner cable where it emerges into the speedometer. measures and displays the distance travelled by a vehicle by sensing the rotations of a wheel. On removing the gears we can clearly see the odometer as shown below. Repair the Odometer/PRND321 LCD Display on a '99-'06 GM/Chevy Truck: In this Instructable, I will show you how to repair odometer/gear select (PRND321) LCD on your GM truck. Fig. I get a problem ,my university professor for physics 1 ask me to search about work of odometer in physical view ,I mean he doesn't want to describe the mechanical or electronic odometers ! Moreover, this parameter does not change. 2) Every time it makes one complete revolution, it passes a Hall-effect (or other magnetic) sensor and the field from the magnet triggers the sensor. The next image shows the entire arrangement of rings clearly. The only exception is when a motorist installs non-standard wheels on his car. Here's how our independent testing process works. Now we have seen earlier how the black ring and the white gear inside it are connected. Is There a Scientific Strategy for Finding a Good Parking Spot? The process goes on till ring 6. Now we have seen earlier how the black ring and the white gear inside it are connected. The four gears in the speedometer assembly starts the connected motion. With every 10 turns, the mechanical links rotate the adjacent tumbler by one digit, and so on. Follow the procedure described in Project 88 (Replacing the Speedometer) for instructions on removing it from your dash. The gear assembly is made up of four gears in contact with each other. To understand how the digits are moved in odometer assembly we need to have a clear picture of their design. For modern vehicles, these are mostly electronic. 1: Image Showing Gear Assembly in An Odometer. Odometer assembly works even when one tooth is damaged because the height of the teeth on small white gear is varied such that the second tooth of the ring passes without coming in contact. .This ensures that the movement of black ring only by one point. A small white gear is present inside the second ring and covered with a plastic plate. If we look carefully a white structure is visible. The blue gear of the assembly is connected to the white ring as shown in the first image. One side has teeth running along the entire circumference while other side has only two teeth. I’d bet it’s in the mechanism for resetting it—that is, pushing the button IN to reset the TRIP odometer to 00000….. now jammed at 190.1 or so …. Part of the odometer includes a trip meter. The alternate tooth on the gear are specifically carved with different depths. 2: Image Showing A Typical Odometer Without Gears. When viewed from the opposite angle the image shows the internal structure of the white ring. If your odometer has stopped working, yet your speedometer still works, the cause is probably one of the two faults described above. The process goes on till ring 6. How odometer works ?? On removing the gears we can clearly see the odometer as shown below. Fig. This is a step by step guide on how an automotive odometer works, this information pertains to all motor vehicles. US Hottest, digiprog 3, ship from UK. 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