How it works and what the device consists of on Daewoo and Chevrolet Lanos
To understand the principle of operation, you need to understand the design of the catalytic converter on Lanos. Inside the cylindrical barrel there is an appropriate amount of noble metals, which are tasked with filtering exhaust gases. Inside the device consists of small meshes, which are also called honeycombs. These meshes are made of a ceramic or metal base using expensive non-ferrous metals. The honeycomb is opened from above using a platinum-iridium alloy. A special sensor is installed in front of the converter, the existence of which everyone has probably heard of - this is a lambda probe or an oxygen pressure sensor. He is responsible for recording and analyzing the level of gas contamination before the device. If the cells are clogged, clogged or destroyed, then the CO2 level accordingly increases, which is recorded by the sensor. It sends a signal to the ECU and the Check Engine light comes on.
This is interesting! The reason for the high cost of the catalyst lies precisely in the presence of non-ferrous metals (platinum and iridium) inside the device.
If gold is present in the composition, it is in very small quantities. The device starts working only after warming up, so for the first 3-5 minutes after starting the engine, the exhaust gases are not filtered by the neutralizer, from which you can hear the corresponding smell of acetone. As soon as the device heats up to a temperature of 600 degrees or higher, an oxidation reaction begins to occur. In the process of this reaction, harmful substances from the operation of the Lanos engine are burned, and low-harm substances - nitrogen and carbon dioxide - are already released into the atmosphere. A normal reaction to reduce harmful substances occurs when the neutralizer is heated to a temperature above 750 degrees.
This is interesting!
On new models of Lanos and Chance, converters began to be installed directly at the outlet of the exhaust manifold. This is done to quickly warm up the device, so the neutralizer starts working immediately after starting the engine.
Chevrolet Lanos Fuel pumP › Logbook › Replacing the fuel pump filter
Although there are a lot of posts on replacing the fuel pump mesh, I decided to post my process with many photos. I will be pleased if my notes help someone in solving problems with the fuel pump
