What is the air flow meter data for the 2011 Buick Excelle?
1 Answers
The standard air flow meter data for the 2011 Buick Excelle is 2.28 to 2.42 grams. Function of the air flow meter: The air flow meter measures the volume of fresh air entering the engine intake manifold and the intake temperature. The ECU uses this information to adjust fuel injection quantity, limit smoke emission, and control the EGR valve opening. It is installed on the engine intake pipe, behind the air filter. Working principle of the air flow meter: Some electronic components are integrated on a ceramic substrate. When the engine is running normally, the diaphragm is first heated. As fresh air flows through the sensor, it carries away some of the heat. The ECU then controls the Wheatstone bridge on the diaphragm to replenish the heat, causing a change in the electrical signal. When this signal is transmitted to the ECU, the ECU calculates the intake air volume based on this change.