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

Brilliance BMW X1 introduce

The domestically produced Brilliance BMW X1 and the imported version X1 are almost identical. For BMW, there are no missing iconic details. The front face still features the standard dual kidney grille, coupled with the energetic triangular eyes, giving the entire front face a certain aura. The main difference between the domestically produced X1 xDrive20i and 28i on the front face is that they use a black grille while the 28i uses a chrome grille, The 28i has an additional horizontal chrome strip on the lower grille compared to the 20i. On the side of the Brilliance BMW X1, there is not much decoration, and a slightly upturned waistline gives its side a sense of power. The snowflake shaped five spoke aluminum alloy wheels add some fashionable elements to this sense of power, and the two are well integrated. On the C-pillar at the rear of the car, The classic corners of BMW are clearly visible, while the 28i has an additional silver skirt trim on the side compared to the 20i. At the rear, X1 continues to follow the rugged route of an SUV, but what reflects this ruggedness is the few simple lines. The large rear window occupies the majority of the rear. The sharp LED tail lights in the shape allow X1's body lines to continue here. The difference between the 20i and 28i at the rear is not significant, Mainly in terms of the silver trim on the rear bumper, the 28i is taller