twc introduce

What is a three-way catalytic converter? A three-way catalytic converter is the most important external purification device installed in a car's exhaust system, which can remove CO from the car's exhaust Harmful gases such as HC and NOx are converted into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. Simply put, they purify the exhaust gas. The working principle of a three-way catalytic converter is as follows: 1. When the engine exhaust gas is discharged through the exhaust pipe, due to the catalytic effect of the purifying agent in the three-way catalytic converter, the activity of C0, HC, and NOx is enhanced, leading to oxidation and reduction reactions. 2. C0 is oxidized to colorless and non-toxic C02 at high temperatures, HC compounds are oxidized to H20 and C02 at high temperatures, while NOx is reduced to N2 (nitrogen) and 02 (oxygen), thereby purifying the engine's exhaust emissions)

Method for installing a three-way catalytic converter

Method for installing a three-way catalytic converter: ① Use 8 bolts to install 2 heat shields on the new preheated three-way catalytic converter. ② Install the new gasket, protective ring, and sealing gasket onto the preheated three-way catalytic converter. ③ Use 3 bolts and 2 new nuts to install the preheated three-way catalytic converter with a tightening torque of 29N. m. ④ Use bolts and nuts to install the exhaust manifold bracket with a tightening torque of 42N. m. ⑤ Use bolts and nuts to install the No.1 exhaust manifold bracket with a tightening torque of 42N. m. ⑥ Connect the secondary oxygen sensor connector

audi a6 introduce

The Audi A6L is a series of cars developed by FAW Volkswagen Audi based on the new A6 in Germany. It is a successor to the A6 and was launched on June 16, 2005 In June 2012, Audi's new generation A6L was launched, equipped with 35 TFSI power, and its appearance seemed a bit like the all-new A4L version. On January 23, 2014, the new generation A6L was launched, priced at 38300-742600 yuan, which is almost no different from the 2012 model. For a long time, the official image of Audi A6 has been deeply rooted in people's hearts, and even in Europe and America, A6 has also been favored by government agencies and business people. The 09 A6L has made some modifications in terms of appearance, The biggest change is the addition of LED daytime running lights to the headlights, and the use of LED tail lights with a new arrow shaped design. In March 2012, the younger generation of Audi A6L was launched in China