Oil Catch Can ?

[al 2]

"Oil catch cans are simple devices that can greatly benefit direct-injected engines. They prevent oil and other contaminants from causing buildup inside your engine's intake manifold. Here's how they work, and why you might want to install one on your own car.


A typical catch can plugs into a hose running from the top of your engine's crankcase to the intake manifold. This hose relieves pressure in the crankcase generated by blow-by (when pressure escapes the combustion chamber by seeping past the piston rings). The problem is, this pressure relief hose allows oil and other nasty stuff from the crankcase to get into the intake manifold, where it doesn't belong. These contaminants can build up inside the intake; when left unchecked, this buildup can hurt fuel economy and horsepower, and can even cause misfires.


Why does this specifically affect direct-injected engines? Well, in port-injected engines, the fuel being sprayed into the intake works as a cleanser, washing off any oil buildup that might occur. Since direct injection engines shoot fuel directly into the cylinder, there's nothing preventing gunk from building up.


An oil catch can acts as a filter, plugging into this hose line to "catch" the contaminants before they can reach the intake. As Jason Fenske of Engineering Explained shows in this video below, even a budget catch can is better than nothing. The only downsides are figuring out how to mount one under your hood, and remembering to empty it every now and then."


Hello, what do you think? Is it interesting for our fsi? Thanks to anyone who wants to comment. H

 

[Catnip64]

Isn't the standard crankcase breather assembly effectively an oil catch can, or would an additional container plumbed in improve it further?

 

[al 2]

Your point of view makes sense, but according to the manufacturers of the "oil cath can" this box acts in surplus, like a decanter where the oil vapors condense and remain in the bottom (which must be emptied from time to time). time) and in the air intake then penetrates only a minimum of cleaner oil vapors than at the start.
Friendships

 

[PlasticMac]

"Oil catch cans are simple devices that can greatly benefit direct-injected engines. They prevent oil and other contaminants from causing buildup inside your engine's intake manifold. Here's how they work, and why you might want to install one on your own car.


A typical catch can plugs into a hose running from the top of your engine's crankcase to the intake manifold. This hose relieves pressure in the crankcase generated by blow-by (when pressure escapes the combustion chamber by seeping past the piston rings). The problem is, this pressure relief hose allows oil and other nasty stuff from the crankcase to get into the intake manifold, where it doesn't belong. These contaminants can build up inside the intake; when left unchecked, this buildup can hurt fuel economy and horsepower, and can even cause misfires.


Why does this specifically affect direct-injected engines? Well, in port-injected engines, the fuel being sprayed into the intake works as a cleanser, washing off any oil buildup that might occur. Since direct injection engines shoot fuel directly into the cylinder, there's nothing preventing gunk from building up.


An oil catch can acts as a filter, plugging into this hose line to "catch" the contaminants before they can reach the intake. As Jason Fenske of Engineering Explained shows in this video below, even a budget catch can is better than nothing. The only downsides are figuring out how to mount one under your hood, and remembering to empty it every now and then."


Hello, what do you think? Is it interesting for our fsi? Thanks to anyone who wants to comment. H

FSIs, being a bit complex, would need a very careful think about how changes in the EGR/PCV system could be picked up by sensor elsewhere, and trigger errors. My feeling has always been that if an FSI is fed good quality fuel, and fully synthetic oil, (of the appropriate spec, changed annually), crud build up in the inlet manifold will be minimal.
Mac.

 

[al 2]

FSIs, being a bit complex, would need a very careful think about how changes in the EGR/PCV system could be picked up by sensor elsewhere, and trigger errors. My feeling has always been that if an FSI is fed good quality fuel, and fully synthetic oil, (of the appropriate spec, changed annually), crud build up in the inlet manifold will be m...

I agree with the statement in the last sentence, but I don't understand the implication of the EGR valve in the case of fitting an "oiler". The EGR valve works intermittently and downstream, and in this case it would receive a mixture of air and exhaust gas, both purified of most of the oil vapors and therefore with an additional benefit for its operation.
It's an entirely personal opinion, but I'm very reluctant to make any changes to an engine as complicated and "gimmicky" as the FSI. Although seeing the internal photos of direct injection systems is scary!
Thank you all for expressing your views.