Explains the operating principles, diagnosis, and laboratory testing of traditional emission control systems. Topics include positive crankcase ventilation, timing control systems, exhaust gas recirculation, air injection, and two-and three-way catalysts. Also covers tune-up, five-gas analysis, and oscilloscope diagnosis on appropriate vehicle systems.
Goals, Topics, and Objectives
- Introduction to an Emission Controls
- Engine Operating Principles
- Engine Air-Fuel Requirements
- Fuel tank, Canister, Lines, and Evaporative Emission Controls
- Exhaust Gas Recirculation
- Positive Crankcase Ventilation
- Intake Air Temperature Control
- Exhaust Gas Treatment
- Electronic Fuel Metering Control
- Electronic Engine Control Systems
- Gasoline Fuel-Injection Systems
- Recognize and identify selected modern emission systems components.
- Interpret results of five-gas analyzer measurements.
- Perform evaporative emission system diagnostic leak tests.
- Perform secondary air tests.
- Measure electrical parameters of sensors and actuators.
- Diagnose engine malfunctions relating to the vehicle emission control system.
- Perform basic fuel system feedback tests.
- Use mode 6 data and trouble codes to diagnoses drivability symptoms.
Assessment and Requirements
Attendance, quizzes and a written final examination. Measurable objectives will be evaluated on the basis of instructor evaluations.
Students must take notes on demonstrations, carefully read and analyze assigned course materials and perform exercises to determine their competence in servicing modern emission control systems.
Automotive Fuel and Emission Controls by: James Halderman, Prentice Hall.