wh500special
New member
"OK, the title of this message
"OK, the title of this message was a little ambiguous but I have a question to, hopefully, placate my curiousity about these engines (and other DI 2-stroke engines):
How does the engine receive lubrication inside the crankcase if the fuel charge is injected directly into the combustion chamber?
I know on a conventional 2S the engine sucks in air/fuel/oil thwough the carburator and reed valve into the crankcase before it heads into the combustion chamber. It lubricates the engine while it whirls around inside before being burned.
In a DI 2S, how does oil get to the crankcase? The cartoon drawings on the Nissan website sure make it look like the fuel is squirted in right next to the plug.
Clearly, I am missing something obvious here and I don't have any doubts that the system works but am instead curious as to HOW.
This is more of a curiousity question than something I really need to know. I have already decided I will be buying a new Nissan 40 hp TLDI in the next month or so since the engines seem impressive and the price is attractive. Hopefully we don't have much ice this winter so I can get it out and run it!
Thanks in advance,
Steve"
"OK, the title of this message was a little ambiguous but I have a question to, hopefully, placate my curiousity about these engines (and other DI 2-stroke engines):
How does the engine receive lubrication inside the crankcase if the fuel charge is injected directly into the combustion chamber?
I know on a conventional 2S the engine sucks in air/fuel/oil thwough the carburator and reed valve into the crankcase before it heads into the combustion chamber. It lubricates the engine while it whirls around inside before being burned.
In a DI 2S, how does oil get to the crankcase? The cartoon drawings on the Nissan website sure make it look like the fuel is squirted in right next to the plug.
Clearly, I am missing something obvious here and I don't have any doubts that the system works but am instead curious as to HOW.
This is more of a curiousity question than something I really need to know. I have already decided I will be buying a new Nissan 40 hp TLDI in the next month or so since the engines seem impressive and the price is attractive. Hopefully we don't have much ice this winter so I can get it out and run it!
Thanks in advance,
Steve"