Reasons for Changes in Vehicle Technical Condition
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The reasons for changes in vehicle technical condition lie in the alterations of technical states of automotive components, mechanisms, or assemblies, which constitute the fundamental causes of automotive technical variations. Factors such as natural wear, plastic deformation, fatigue damage, corrosion, and other changes in parts or materials directly affect the modification of vehicle technical conditions. Supplementary information: Vehicle Technical Condition: 1. Vehicle technical condition refers to the comprehensive summation of a vehicle's appearance and performance parameter values at a specific moment, which characterizes its operational capability. The evaluation of vehicle technical condition is generally conducted through comprehensive assessment of automotive performance indicators, completeness of vehicle equipment, and external integrity status, typically measurable quantitatively. Automotive performance indicators include: power performance, fuel economy, braking performance, handling stability, and ride comfort. 2. The vehicle technical condition determines operational efficiency, safety, and environmental impact. 3. As mileage (or usage time) increases, the vehicle technical condition gradually deteriorates, leading to declines in power performance, fuel economy, reliability, and safety, along with increased environmental hazards. Primary indicators of deteriorating technical condition include reduced maximum speed, prolonged acceleration time, delayed braking response, heavy steering, vehicle vibration with abnormal noises, increased fuel/lubricant consumption, and abnormal exhaust emissions with peculiar odors.