Factory supply catalytic converters for Changan Star

Product introduction

Premium catalytic converter for Changan Star，This product we use high-quality raw materials 409 stainless steel, and with high flow ceramic carrier, to help each car can purify exhaust gas, reduce fuel consumption, improve power, and extinguish engine failure lights!

First, core use

Tail gas purification

Conversion of harmful gases: Through the catalytic reaction of the precious metal (platinum, palladium, rhodium) coating inside the three-way catalytic converter, three main harmful substances in the tail gas are chemically converted:

Carbon monoxide (CO) → Carbon dioxide (CO₂) (oxidation reaction)

Hydrocarbons (HC) → Water (H₂O) and carbon dioxide (CO₂) (oxidation reaction)

Nitrogen oxides (NOx) → Nitrogen (N₂) and oxygen (O₂) (reduction reaction)

Reduce pollutant emissions: Through efficient catalysis, the exhaust emissions meet the environmental protection standards such as Country 4, Country 5 and Country 6, and reduce the pollution of the atmospheric environment.

Ensure vehicle compliance

Pass the annual inspection: the exhaust emission standard is one of the core indicators of the vehicle annual inspection, the failure of the three-way catalytic converter will lead to the failure of the test, and the replacement can ensure the smooth passage of the annual inspection.

Avoid restrictions and fines: Some cities implement restrictions or fines on high-emission vehicles, and normal catalytic converters can avoid such risks.

Two, the main effect

Improve engine performance

Optimization of exhaust efficiency: The honeycomb ceramic carrier inside the catalytic converter (mesh number is usually 600-900) is reasonably designed to balance exhaust resistance and purification efficiency to avoid power decline due to poor exhaust.

Reduce the impact of carbon accumulation: If the catalytic converter is blocked, it will lead to insufficient engine combustion, and restore exhaust smoothness after replacement, improve acceleration response and fuel economy.

Protect critical vehicle components

Prolong engine life: reduce the corrosion of unpurified sulfide and acid substances on cylinder, piston ring and other parts.

Protect the oxygen sensor: When the catalytic converter fails, the exhaust gas that is not fully treated may contaminate the oxygen sensor, causing its sensitivity to decrease or damage.

Avoid overheating of the exhaust system: Clogged catalysts can trap high-temperature exhaust gases, which can burn the exhaust pipe or cause deformation of other components.

Improve the driving experience

Reduce exhaust odor: Efficiently convert unburned hydrocarbons (HC) to reduce pungent exhaust odor.

Reduce noise: The structure of the catalytic converter can absorb part of the exhaust pulse vibration and suppress the abnormal sound of the exhaust system.

Economic and environmental value

Reduce vehicle costs:

Avoid the cost of repeated testing due to substandard exhaust gas;

Reduce the increase in fuel consumption caused by catalytic converter clogging (about 10%-15%).

Precious metal recovery: The waste catalytic converter contains platinum, palladium, rhodium and other precious metals, and the recovery value can reach hundreds of yuan, partially offset the replacement cost.

Third, adapt to the special design of Changan Star

Special car structure

Accurate matching of exhaust system: The original catalytic converter is customized according to Changan Star exhaust manifold size and engine displacement (such as 1.2L/1.5L) to ensure installation tightness and avoid gas leakage resulting in reduced catalytic efficiency.

High temperature resistant material: double stainless steel shell + ceramic carrier, can withstand high temperature above 800℃, suitable for high frequency and heavy duty conditions of commercial vehicles.

Long-term stability

Anti-poisoning design: By optimizing the ratio of precious metals, reduce the "poisoning" effect of sulfur, lead and other components in inferior fuel oil on the catalyst.

Anti-carbon coating: Some models add anti-carbon coating to delay carrier blockage caused by oil combustion or fuel impurities.

4. Precautions for use

Avoid inferior fuel: Long-term use of fuel with high sulfur content will lead to sulfur poisoning of the catalytic converter and reduce the conversion efficiency.

Regular inspection and maintenance:

If the vehicle has a power drop, failure light alarm (such as P0420 fault code), and the exhaust odor is aggravated, it is necessary to detect the catalytic status in time.

Catalysts (oxalic acid immersion or special cleaning agent) can be cleaned every 20,000 kilometers to delay clogging.

Choose genuine parts: Secondary parts may reduce precious metal content or use low mesh carriers, resulting in insufficient purification efficiency or triggering high exhaust temperature.