Audi a4l35tfsi stands for this a4l with a 2.T engine. TFSI is Audi's patented technology, which means in-cylinder injection stratified combustion turbocharged engine. Because stratified combustion technology must rely on in-cylinder direct injection, it can be called stratified combustion turbocharged engine for short. Because the turbocharger often works at high speed and high temperature, the exhaust gas turbine end temperature of the turbocharger is about 6℃, and the turbocharger rotor rotates at a high speed of 8-11 r/min. In order to ensure the normal operation of the turbocharger, attention should be paid to not leaving the car without authorization, not turning off the engine immediately, keeping it clean, being clean and paying attention to maintenance. Because the supercharger often runs at high temperature, the lubricating oil pipeline is subjected to high temperature, and the internal oil is easy to coke locally, which will lead to insufficient lubrication of the supercharger bearing and damage. Therefore, the lubricating oil pipeline should be cleaned after running for a period of time. Before and after getting out of the car, check the connection of each pipe in the air passage to prevent the supercharger from malfunctioning and the air from falling off and entering the cylinder. It can be seen that after the engine is supercharged, the structure of the components is strengthened. From the aspect of use and maintenance, it is necessary to strengthen the compulsory maintenance of the engine and pay attention to the correct operation method.