[Ducati] exhaust energy, turbos and diesels

[Ronald Betts]

Turbos on aircraft engines have been around for decades. When I schooled for my A&P I was astounded to find turbos on engines made in the early 50s. Aircraft engineers have used turbos, intercoolers and water injection for a long time. Of course were comparing apples to oranges when comparing aircraft, marine and road vehicle usage of the internal combustion engine. 
Heres another couple of questions for the minions, What actually occurs to the intake mixture at ignition ? And , What are the five events of the 4 cycle engine?
Oh one more, What actually makes the noise coming out of the exhuast ?
Duc content: These things do occure on my Duc.
Peace...Ron"Desmohead"Betts 95 900 SPI've learned that I don't suffer from insanity, I enjoy it!> Date: Tue, 27 Nov 2007 06:50:04 -0800> From: Tim at pacificblasting.com> To: ducati at ducati.net> Subject: [Ducati] exhaust energy, turbos and diesels> > Brad, interesting thoughts about multi staged turbos. That's what would> be needed for gasoline powered sporting engines to be effective, let> alone efficient. Spent some years learning about and tuning turbo cars.> The 1.8T being the last effort. > > My conclusions are that in its current technology, turbocharging does> not make at ton of sense unless you had no other way to make power.> Seems to me, unless you are running at a constant rpm (planes,> generators, big rig diesels etc) the physics of turbo inertia works> against the "sporting feel" most of us gear heads want out of an engine.> And to your point, it also beats the hell out of the efficiency and> economy especially given the added maintenance (oil changes, turbo &> waste gate failures, cooling system stress, pressure leaks) and reduced> engine life. > > In the case of the 1.8T, it is hardly a world beater in economy even> though it is turbocharged; even using a power per unit of fuel> measurement. If it were, we'd be seeing turbos show up in hybrids and> other green vehicles. It is not a panacea and in fact it's probably the> wrong technology period.> > Tim > > ------------------------------> > Message: 7> Date: Tue, 27 Nov 2007 22:58:30 +1100> From: "Kerry and Brad Black" <bikeboy at alphalink.com.au>> Subject: [Ducati] exhaust energy, turbos and diesels> > .......which brings me on to my point. if you wanted to make real use> of the energy going out the exhaust you'd have either a wide ranging> variable turbo (not sure if they exist) or a twin / triple / quad turbo> set up. the smallest turbo would be boosting while you were cruising> around at 60 - 100km/h, because in reality that's where a lot of bikes> spend a lot of time (mine does) and when they're also very inefficient.> > most people don't worry about this sort of stuff tho, and no one turbos> a bike to help the part throttle fuel economy. but when you're running> an interstate truck and spending $100,000 a year on fuel (probably> more), 1% increase in economy is a decent chunk of cash. 10% makes> owners take real notice.> > brad> > > *****> > Our newest sponsor, MC Stands, has just opened its doors! It's a motorcycle> stand superstore. Every brand, every model, 95% in stock for immediate> shipment. Whether front stands, rear stands, paddock stands, dirt bike> stands, or any kind of stand or lift, MC Stands tests, rates, and discounts> everything they sell. Check them out!> > Visit: http://mcstands.com/> _______________________________________________> Ducati mailing list> Ducati at ducati.net> http://list.ducati.net/cgi-bin/mailman/listinfo/ducati> Mailto: ronaldebettsasalc0015 at hotmail.com
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