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

Mazda 3-star Cheng introduce

The Mazda 3 Star Cheng hatchback (null) is a compact two door sedan launched by Mazda's domestic car manufacturer, Changan Mazda, in 2011. The latest model year is 2015, abbreviated as M3, Maz3, and formerly known as Mazda 3, Axela, also known as Mazda 3. The Mazda 3 Star Cheng is a new Mazda 3 model that Changan Mazda is expected to launch in October 2011. On June 23, Changan Mazda officially confirmed its Chinese name as Mazda 3 Star Cheng, The expected selling price is 125000 to 165000 yuan. The Mazda 3-Star Cheng 2.0L model will be equipped with a 6-speed manual or 5-speed automatic transmission. The appearance also has a brand new design. On June 23, 2011, Changan Mazda announced the Chinese name of the new Mazda 3- Mazda 3-Star Cheng. In terms of power, the Mazda 3-Star Cheng will still be matched with 1.6L and 2.0L engines, but its 2.0L model will be equipped with a 6-speed manual or 5-speed automatic transmission