Part of Lesson Plan: **5 Gas Analysis (updated) by Richard Williams

Activity Overview / Details

At this time I issue a vehicle to each group of students (2 to 4) and instruct them to follow lab sheet and analyze the exhaust. They are also instructed to log on to smogsite.com (http://www.smogsite.com/calculators.html#lambda), find and use a lambda calculator and record on back of lab sheet. They will also be encouraged to manipulate the exhaust gasses to find a particular result.

For example:

"If I introduce propane into the intake, which gases will change, by how much and in which direction?"

They are also encouraged to connect an appropriate scan to a Digital Storage Oscilloscope to monitor O2 sensors as well as Long & Short Term Fuel Trim for conclusions that will later be discussed in the classroom.

I will also visit and interview each group throughout the lab session.