Excerpt:
"Here we’re going to talk about PCV, Fuel Evaporative
Systems, Thermostatic Air Cleaners, Air Injection, EGR, and
Catalytic Converters. What theory do you need to know about
how they work? How do they usually fail and cause problems?
How do we test them? And we’ll have some sample test questions.
PCV:(Positive Crankcase Ventilation):
These were our first emission control devices. (Unless
you want to call a gas cap a smog device, but the first gas
caps were vented, right?)
Inside the engine crankcase, where the oil lives and
breathes we have gas vapors that got there by sneaking
past the piston rings when the piston is compressing the air-fuel
ratio or the fuel is burning up. And the more power the engine
is ..."
The article contains these sections:
- PCV (Positive Crankcase Ventilation)
- Fuel Evaporative Systems
- Thermostatic Air Cleaners (TAC) and other Early Evaporation (EFE) Devices
- Air Injection (AIR)
- EGR, Exhaust Gas Recirculation
- Catalytic Converters (CAT)
- Basic Theory
