Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

EO M232.04 Explain the functions of oil in a four-stroke pis

No description
by

Hang Hu

on 4 December 2014

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of EO M232.04 Explain the functions of oil in a four-stroke pis

By: FSgt. Hu
EO M232.04 Explain the functions of oil in a four-stroke piston-powered engine
 Oil creates a smooth surface between parts.
 Has different grades and viscositie
 The viscosity affects the oil’s stickiness, with low-viscosity flowing more easily than high-viscosity.
Oil thins as the temperature raises.
 Engine manufacturers will often specify what oils to use and this direction should be followed to avoid engine wear.
 Lubricating
 Sealing
 Cooling
 Flushing

Oil has four roles
 Oil prevents the expanding gases from leaking out during the power stroke.
 It does so by creating a barrier between the engine components
 High viscosity oil provides the best seal for the combustion chamber.
Low viscosity allows more oil to be delivered to bearing surfaces.

Sealing
 Engine parts get hot and needs to be cooled.
 Oil carries the heat away and equalizes the temperature within the engine.
 Oil must maintain its viscosity while it’s near the heat of the combustion chamber.
 Once again, this is taken into account when specifying what oil to use.

Cooling
Lubricating
Flushing
Oil removes and holds tiny particles and grit (which are harmful to the engine).
 Oil carries away dirt and debris from the engine as it flows through.
 Oil and the oil filter has to be changed regularly
Full transcript