Possible CCV solution? take a look

[Turbo_Bimmer]

While reading on different designs of crankcase setups, I found a well designed device that is used on Cummins engine.
I don't know if diesel fumes compare to petrol though.

This device has a heating element, a safety depression valve, a crankcase pressure sensor and it seems bulletproof.






Here is the link if you want to access the complete document:
http://www.fleetguard.com/pdfs/produ...LT32599_06.pdf

[JCL]

Interesting link.

Fumes are similar between diesels and gasoline engines.

This unit is designed for larger (ie 10-14 litre displacement) diesel engines used in commerical vehicles, primarily highway trucks. Those engines haven't historically been required to have CCV systems, so there is a market for retrofit as well as new design as emissions regulations are expanded. The unit is physically larger (approx 12" tall) and sized for those larger engines. Blow by volume would have to be measured on an X5, but it is likely much less than these units are designed to handle. For those reasons, the hose fittings are large (1"). Vacuum and pressure specs would also have to be confirmed, ie max crankcase pressure setting.

Given all that, if it could be physically fit under the hood, it would likely work. It would still have the same problem as the BMW OE CCV in that condensate collects and freezes at various points (and the optional heater is only in the unit, not along the hoses). What would be an improvement is the servicability, this unit is designed to be serviced, and has a replaceable filter element.

Any idea how much it costs?

Might just be easier to maintain the BMW CCV and hoses.

[Turbo_Bimmer]

I was also curious about the cost. I phoned my local Cummins distributor, and they said it is a new part, no number exist for it yet, so no price.

I also saw a solution that many guys in performance BMWs use. Its an oil separator that was used on the E39 M5, a kind of cyclone device that separate the oil fumes and send the cleaned air to the intake and the oil back to the oil pan.
BUT, on the X5, it seems that the problem is not related to the design of the system, but more on the placement of it under the hood or driving habits.
On my 2002 E46 with 210000km, I'm still on my original oil separator and it works very well. I drive 100km per day though.

E39 M5 Parts #1 and 2: $33 ea.