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Engine Dissection Project
Your team is dissecting a 3.5 HP single cylinder, 4 cycle engine, made by Briggs and Stratton in Milwaukee, Wisconsin
These engines are typically used in lawn mowers, snow blowers, go-carts, etc
Engine Dissection Project
n Start engine.
n Disassemble engine.
n Review parts and functions – Ask questions!
n Reassemble engine.
n Re-start engine.
n Write individual report on how engine works.
n 4 Cycle Process
How do engines work?
n How does the engine complete these Primary Functions?
n Get started?
n Suck in fuel?
n Suck in air?
n Mix air and fuel?
n Compress the mixture?
n Ignite the mixture (at the right time)?
n Make the combusting gases do work?
n Make the work available to somebody?
n Exhaust the gases?
n Shut off?
How do engines work?
n How does the engine complete these Secondary Functions?
n Stay lubricated?
n Operate the valves at the right time?
n Smooth out the power pulses?
n Store the fuel?
n Keep cool?
n Make it easy to start?
n Some variations:
Fuel Injection (electronic, multi-port)
2 Stroke Process (for comparison)