hmm, I see. I suspect that a catalytic could bring the UHC down to ~1g/kwh but much beyond that is pushing it. Possibly going to a stratified charge as well as after treatment could get us there. But the target is a moving on, by the time that could be sorted the regulations will have shifted...
I'm not terribly up to date on modern automotive emission specs but maybe we can start to quantify this. The DI snowmobile engines I'm used to dealing with have no catalytic aftertreatment and emission numbers are approximately as follows on a production engine. This is also not a variable...
There are examples of 2-stroke DI motors with very very clean emissions, cleaner than the 4-strokes they compete against in those particular classes. Particularly outboard boat engines and snowmobiles.
If you're getting into it for personal satisfaction, there's no such thing as too late. However if you're getting into it for financial reasons, a future worth calculation can provide a much more qualitative answer than any number of opinions we can provide.
Norm: I concur. BMEP and Piston speed is the fast and dirty way of calculating a rough estimate of power output. But even that method shows very clearly that a higher bore:stroke ratio is going to net you a higher amount of power with the same BMEP. Sadly there's a lot more to engine design than...
I've seen some of those engines ya. And yes society seems so caught up in the cylinder swept volume that they neglect the more basic metrics. There seems to be an assumption that an engine with a larger swept volume will be massier. Altho you take that little 4 cylinder box 4 turbo, and start...
I'd like to point out that the displaced volume is a rather arbitrary means of comparing engines. Personally I thought outright mass or geometric size is a much more relevant comparison. Doesn't sell as well on the paper perhaps, but I for one am extremely impressed with the LS7's mass specific...
The real question is will management stop using the buzzword of the minute and applying it on Engineers?
Lean, Siz Sigma, Paradigm Shift, 7 Habits, Green, etc.
Ya Fort Mac was hit hard, my understanding is that it's starting to pick up again with the price of crude back in the $80 range, it really needs to be over $100 for the Athabascan sands to be in high gear, but there's plenty of build projects underway.
That said, I wouldn't recommend Fort Mac...
if you've got experience in oil&gas head for Fort McMurray in Northern Alberta, big money in that area, altho not a whole lot in the way of vacation material, and the winters are generally harsh. Newfoundland also has a fairly large oil/subsea industry and is probably better for a vacation spot...
given the push for clean coal that is at the moment the most pallatable option politically that's capable of filling the grids needs. I'd say it's a big ask to take carbon sequestration off the table.
388hp on an 86mm squared 4 cylinder at 6250 rpm comes out to be right around 28 bar of BMEP. More than reasonable for an absolute pressure of 2.6 bar in my opinion. To put it in perspective that'd be just over 10bar at atmospheric pressure, which is actually relativly mild tune. Ofcourse you...
