Air Induction And Exhaust Systems Flashcards
What is central purpose of an air induction system?
Supply the engine with an ample supply of cool, clean air for combustion
An air induction can be composed of what parts?
Air cleaner(s), Pre-cleaner(s), Air filter(s), Dust ejection system(s), restriction indicator, filter housing(s), Inlet tubing, Clamp, Hoses, Cold/hot air intake systems, Manifold(s) and gaskets, Shutdown devices
What are the main functions of the air induction system?
Cleans the air supply, Silences the inlet airflow, Provides air for combustion, Cools air, it allows extra airflow when blowers and turbo’s are used.
Maximum engine performance occurs when air is less then?
33 C
2 stroke engines are considered to be:
Naturally aspirated, unless equipped with turbo
Engines without a turbocharger are considered to be?
Naturally aspirated
What factor can limit the volumetric efficiency of a engine?
Engine operating speed, Air humidity, Air temperature, Altitude, Liner and ring condition, Valve adjustment and cam condition, Air filter and inlet tubing condition
Naturally aspirated engines may have a volumetric efficiency of?
75-85%
Pre cleaners may be able to remove what percentage of large particles?
80%
What is called when exhaust gases cause the dust ejectors to dump?
Exhaust gas aspirator
What are the two types of air filter assemblies?
Wet or Oil bath
Dry type
How effective are each of the different types of air filter assemblies ?
Oil bath - up to 98.5%
Dry type - up to 99.5%
Dry filters are commonly constructed of what?
Pleated paper
Screw on constant torque clamp must extend how far?
1/4”
Seals and gaskets should:
Be replaced when components are disconnected