Does Idling Affect the Car?
1 Answers
Idling has a certain degree of harm to the vehicle. Why idling consumes fuel: The cylinders consume fuel during operation, and idling is equivalent to doing useless work. According to the law of energy conservation, the fuel is converted into heat and lost, while the car does not move at all. The reason for fuel waste is that when the engine speed is very low (idling is generally the lowest point), the leakage of the valves and piston rings increases, and the contact time between the combustion gases in the cylinder and the cylinder wall lengthens, increasing heat dissipation losses, thus causing the engine's fuel consumption to rise. For gasoline engines, since the intake airflow is relatively weak during idling, the carburetor has difficulty dispersing the fuel mist, requiring a richer mixture, which also increases fuel consumption. The hazards of idling: Under idling conditions, due to incomplete combustion in the cylinder, the exhaust contains a large amount of harmful and toxic components such as hydrocarbons, carbon monoxide, and nitrogen oxides. During the emission of these harmful and toxic components, some deposit in the cylinder. During idling, the engine oil pressure is relatively low, worsening the lubrication of moving parts. Unburned fuel washes the cylinder walls, the intake vortex is weak, and fuel combustion is incomplete, leading to the easy formation of carbon deposits. The above factors will accelerate the wear of moving parts. In addition, when the coolant temperature drops below 60 degrees, combustion byproducts in the cylinder may react chemically with water, forming acidic substances, thereby increasing cylinder corrosion.
