Wait a minute...If more air is being forced into the cylinder at lower RPMs I can see how turbo lag is reduced. But more air allows more fuel to be injected, so how is the efficiency of the engine increased?
Modern electronic injection schemes will prohibit full injector volumes at low boost, so where does the efficiency gain come from? It looks like a smaller engine can burn more fuel, but I would not call that efficiency.

I expect it’s through more complete combustion of the fuel in the cylinder—i.e., more efficient. I haven’t seen detailed combustion or emissions numbers on the concept, which would provide another way to calibrate this...

Less displacement also means lighter. Lighter means less energy required to accellerate.

It's all about lowering parasitic losses. More BMEP out of smaller engines means more fuel is converted into motion.

Dual-turbo systems like this seem to be the way of the diesel's future. I just wonder - what about costs? 1 turbo already adds a fair amount of cost (close to $1kUSD). I'd think 2, even if one is small, would tend to increase cost as well.

Regardless, these engines seem fantastic on paper. And by what I've heard, they are great in reality too - like the new BMW 535D.

Dear Sirs,

Is suggested new high performance supercharger system designs for cardinal improvement of heavy vehicles & tanks operational characteristics. PATENTABLE.
See WWW. EXCAVATOR. INFO All machines are welcome!!!
Thanks for your answer, Lev Valdman

Dear Sirs,

Is suggested new high performance supercharger system designs for cardinal improvement of heavy vehicles & tanks operational characteristics. PATENTABLE.
See WWW. EXCAVATOR. INFO All machines are welcome!!!
Thanks for your answer, Lev Valdman

NEW SUPERCHARGER SYSTEM
/ additional air charger /

Suggested system ensures:
- Increase of air charge density + fuel cyclic on the peak torque regime due to supplying of additional pure low - temperature air to the inlet manifold.
As an outcome: Radical torque reserve increase.
- Pronounced lagging decrease of air charge density growth behind the growth of the fuel cyclic supply at transient conditions.
As an outcome: Greater mobility & propoulsion of vehicles. Reduction fuel consumtion on transitions & accelerations regimes.

NEW COMPRESSOR UNIT DESIGNS
for gas - turbine engines

Suggested unit designs comprising additional device for force additional pure air into inlet of compressor.
Amount of additional air is regulated by fuel apparatus according to engine conditions.
One of the version unit designs allows, at the same initial compressor pressure ratio, to replace high head wheel compressor to medium head wheel compressor at RPM reduction.
As an outcome:
- Increase efficiency / higher fuel economy on off - design engine coditions /;
- Operation life increase / RPM & vibration reduction /

Thanks for your answer, Lev Valdman

Dear Sirs,

New Method ("Methof")and system designs for improved engine performance are suggested.
Application: Gas turbine and diesel engines.
Suggested "Method" is based on:
US Patent 6.726.441 by DaimlerChrysler,
US Patent Applications 2004/0250541A1 and
2005/0163606A1 by General Motors and
US Patent Application 2004/0045281A1 by
Detroit Diesel Corporation - Prototype.
Prototype has been supplied with additional means for radically improved air compressor recirculation system.
Suggested "Method" in comparison to existing "Methods" provides additional engine efficiency:
* Higher dynamics performance.
* Higher fuel economy on off-design engine conditions.
* Longer operating life.

US

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