What are the reasons for excessive vehicle emissions?
3 Answers
Excessive vehicle emissions are caused by: 1. Aging of various vehicle components; 2. Use of low-quality fuel; 3. Failure of the three-way catalytic converter. The solutions for excessive vehicle emissions include: 1. Inspecting the three-way catalytic converter; 2. Using higher-quality fuel; 3. Replacing leaded gasoline with unleaded gasoline to reduce the emission of toxic substances in exhaust gases. The impacts of vehicle exhaust are: 1. Lead in the exhaust enters organs, disrupting the acid-base balance and causing lead poisoning; 2. Carbon monoxide in the exhaust hinders blood absorption and oxygen delivery, harming the human body and producing carcinogenic substances; 3. Inhalable particulate matter irritates the eyes and lungs, increasing the risk of respiratory diseases.
I have been driving for over twenty years and have seen many cases of excessive vehicle emissions. The main reason is incomplete combustion in the engine, leading to excessive exhaust emissions. Common factors include clogged air filters, which, if not replaced in time, accumulate dust and affect air intake. Aging spark plugs cause unstable ignition, increasing fuel consumption and pollutants. A clogged or damaged catalytic converter is a critical issue—it is responsible for purifying exhaust gases, and reduced efficiency makes it difficult to meet standards. Poor fuel quality also contributes, especially when using low-grade gasoline with high impurity content. Faulty oxygen sensors are another common problem—they control the air-fuel mixture ratio, and if broken, they misjudge and inject more fuel. I have also seen vehicles idling for long periods, increasing the risk of untreated emissions. Regular inspection and maintenance of the engine system, such as cleaning carbon deposits or replacing parts, can effectively prevent these issues and keep vehicle emissions clean.
I usually pay a lot of attention to environmental protection, and excessive car emissions are often caused by the accumulation of multiple habits. Driving style has a significant impact, such as frequent sudden acceleration or braking, which increases fuel waste and emits more pollutants. Infrequent vehicle maintenance, delayed replacement of air filters and engine oil, and accumulated oil sludge affect efficiency. The aging of the catalytic converter is a major cause, especially in older cars where efficiency decreases over time, leading to insufficient exhaust purification. Fuel quality is also not negligible, as low-quality gasoline leaves more residues and results in incomplete combustion. I've also noticed that prolonged idling in city traffic jams leads to continuous emissions. To avoid exceeding emission limits, it is recommended to develop smooth driving habits, reduce unnecessary stops, choose good fuel, and maintain the catalytic converter system on time, all of which can help reduce risks.
