Can a Car with 200,000 Kilometers Still Be Driven?
1 Answers
Calculated via mechanical or electronic odometers. A car with 200,000 kilometers can still be driven. Below are relevant introductions about odometer mileage calculations: 1. Mechanical Odometer: A mechanical odometer consists of worm gear mechanisms and numeral wheels. When the car moves, the drive shaft rotates the first numeral wheel on the far right through three sets of worm gears, displaying 1/10 km. From the first numeral wheel leftward, each adjacent pair of numeral wheels forms a 1:10 gear ratio via their internal teeth and carry-over gears. When the first numeral wheel completes a full rotation from 9 to 0, its internal teeth drive the second numeral wheel to rotate 1/10 turn, incrementing by 1 km. Similarly, when the second numeral wheel completes a rotation from 9 to 0, the third numeral wheel rotates 1/10 turn, incrementing by 10 km. The remaining numeral wheels display higher digits in sequence, thus showing the total mileage. 2. Electronic Odometer: An electronic speedometer/odometer comprises a speed sensor (installed on the wheel's transmission worm gear assembly, using photoelectric or magnetic principles), a microcomputer processing system, and a display. The photoelectric or magnetic pulse signals from the sensor are processed by the onboard computer to display speed. The odometer calculates and displays mileage based on speed and cumulative operating time via microcomputer processing.
