Cams and Cranks Flashcards
1
Q
What do cams and cranks do?
A
Turn rotary motion into reciprocating motion
2
Q
What are the four steps of a 4-stroke engine to produce power?
A
- Suck (intake)
- Squeeze (compression)
- Bang (power)
- Blow (exhaust)
3
Q
What are the different type of cam profiles?
A
Circular
Pear-shaped
Uniform acceleration and retard
Heart-shaped
Cylindrical/ barrel
Box
Flat plate/ linear
Swash plate
Offset
4
Q
What are the different types of followers?
A
Point
Knife edge
Roller type
Flat foot/ mushroom
Lever type
5
Q
What is the purpose of a follower?
A
To follow the cam profile to produce reciprocating motion
6
Q
Followers are meant to always be in contact with the cam. What is put in place in high speed systems to stop them losing contact?
A
Springs are added to the follower to ensure permanent contact with the cam
