Knowledge Base - Info:- What Does an Oil Catch Can Do?

All manufacturers are required to minimise environmental damage. Part of the emission control system is called PCV or Positive Crankcase Ventilation. Hot oil vapour and combustion gases are passed back into the air intake so that they can burnt as a part of the intake charge.

Allowing the engine to draw in cold air increases engine power. The PCV is feeding hot oil vapour and gases into the intake thus increasing the intake charge temperature and polluting the nice clean air being drawn into the engine.

An oily mist will also build up in the intake manifold.

The catch can works by making the vapour pass into a chamber, which collects the hot oil vapour by allowing it to condense. What's left if then fed back into the intake to be burn.

A cheaper option in a PCV or Breather filter. This tries to catch the muck and allows the gases to enter the atmosphere. It can lead to the engine bay being splattered with an oily mist!

Toyota engineers started fitting a catch can as standard on all revision 3+ 3S-GTE engines.

Peter Jones.

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Created : 2011-10-05 16:30:57, Last Modified : 2011-10-05 16:30:57

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