CCV Idea

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Nov 19, 2010 | 06:19 PM

#46

superduty4x4

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Joined: Jul 2003

Posts: 12,177

Likes: 40

From: Newport, WA

Quote:

Originally Posted by strokersace

That older song, "It's my party and I'll cry if I want to" just popped into my head!!!

Thanks a lot arsehole, now it's stuck in my head too!

Nov 20, 2010 | 11:05 AM

#47

Ford_Six

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Joined: Oct 2002

Posts: 18,488

Likes: 22

From: The Big, Oregon

Quote:

Originally Posted by Talyn

Stupid internet.

Apparently Mercedes does this already with their diesels.

Pierburg Diesel Vacuum Pump - Auto Parts Warehouse

Guess its a viable option, just have to research it more.

That vacuum pump is used to run systems on the car like climate control, brake booster, engine shutdown, etc. and it vents INTO the crankcase. The crankcase evacuation system on the Mercedes diesel consists of a line from the valve cover to an oil separator in the air cleaner, with a drain tube back to the oil pan. That vacuum pump you pictured mounts to the front of the engine and is driven by a cam machined into the front of the injection pump sprocket. It disengages when the vacuum system is fully pumped out, if it were to run all the time, then the bearings on that lever come apart putting shrapnel into the timing chain killing the engine.
If you want to see what happens when you draw a vacuum on a crankcase, pull the breather off a gasser and run just a PCV valve. You will suck in seals, have extremely low oil pressure, and low power.
The ideal CCV system would be a line to a separator can about on level with the oil cooler, with a drain line going below oil level in the pan, and a vent line going vertically to the suction side of the turbo. There will still be some vapors, but shouldn't be any oil mist.