Automotive exhaust system catalytic converter for Volkswagen Magotan

Product introduction

Premium catalytic converter for The Volkswagen Magotan ，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!

1. Core functions and design features

1. Suitable for turbocharging conditions:

The high pressurization and high thermal efficiency of the EA888 engine require the catalytic converter to have stronger high temperature resistance (withstand transient high temperatures above 850℃) and anti-sulfide poisoning ability.

2. Power and fuel economy optimization

Reduce exhaust back pressure: Turbocharging depends on exhaust energy drive, catalyst blockage will cause turbine response lag, after replacement can restore low speed torque and acceleration smoothness.

Collaborative sensor precision control:

The front and rear oxygen sensors monitor air-fuel ratio in real time, and the ECU dynamically adjusts the fuel injection amount.

Some models are equipped with broadband oxygen sensors for more accurate data feedback and improved combustion efficiency.

Second, structural layout and technological innovation

1. Dual catalytic converter design (some high-power models)

Pre-Cat: Integrated inside the exhaust manifold, next to the turbocharger, fast heating to improve cold start purification efficiency.

Main catalytic converter (Main Cat) : located behind the turbine to further purify the exhaust gas and reduce emission pollution.

2. High density ceramic carrier

The 900 mesh/square inch honeycomb structure increases the reaction area, improves the conversion efficiency, and controls the exhaust resistance.

3. High temperature resistance and corrosion resistance

Stainless steel shell thickening: to prevent the chassis rubbing or gravel impact caused damage.

Precious metal double-layer coating: Some models use the "fast ignition + long-term stability" double-layer coating technology to shorten the cold start pollution emission time.

3. Common faults and performance

1. Cause of failure

Precious metal poisoning: long-term use of inferior fuel (sulfur, manganese) or burning oil leads to coating failure.

Carbon accumulation plugging: Direct injection engine is easy to produce carbon accumulation, and carbon particles in the mixture block the carrier pores.

High-temperature melting: engine misfire (such as ignition coil failure) leads to secondary combustion of unburned mixture in the catalyst, burning the carrier.

2. Typical symptoms

Power decline: turbine hysteresis is obvious, and acceleration is weak (especially in the 1500-4000 RPM range).

Increased fuel consumption: the exhaust resistance increases, and the ECU increases the fuel injection compensation power.

Fault alarm: The instrument panel lights up EPC light or engine failure light, and the diagnostic instrument shows P0420 (low catalytic converter efficiency) or P1296 (high exhaust temperature).

Abnormal exhaust gas: blue smoke (burning oil) or black smoke (insufficient combustion) at cold start, and the exhaust gas is pungent.

Iv. Maintenance and replacement suggestions

1. Daily maintenance

Use compliant fuel: Unleaded gasoline No. 95 or above must be added to avoid sulfide poisoning catalysts.

Change oil/filter regularly: Use VW 502/505 certified oil to reduce the risk of burning oil.

Check the ignition/fuel injection system: replace the spark plug and ignition coil in time to avoid fire damage to the catalyst.

2. Rectify the fault

Infrared temperature detection: in the hot car state, the outlet temperature of the catalytic converter should be 50 to 100 ° C higher than the entrance, and the temperature difference is too small to indicate failure.

Endoscopic observation: Check whether the carrier is blocked, chipped, or the coating is peeling.

OBD diagnosis: Read the voltage curve of the oxygen sensor before and after, if the fluctuation is synchronized, the catalyst will fail.

3. Change the precautions

Adaptation model selection:

Prohibited removal or modification: illegal removal of the catalytic converter will lead to annual inspection failure, fines, and trigger engine torque limit protection.