supercritcal fuel injection

[arcosine]

I wonder if it is lean burn.

Ultra-Efficient Gas Engine Passes Test | MIT Technology Review

[user removed]

Yes it is "lean burn". More diesel like than a gas engine without the NOX issue.

Runs on blends of diesel and gasoline as well as almost any type of liquid fuel, possible emissions legal without any aftertreatment.

Google transsonic combustion. I've posted about it here for probably 3 years.

I like evacuated tube transportation technology better, New York to LA in 45 minutes, human passenger magnetic rail gun that takes you close to 200 miles to get to 4000 MPH and recovers that energy slowing down at your destination. Now that's my kind of electric transportation, you carry no fuel in the vehicle, just a pod with passengers in 0 atmosphere.

regards
Mech

[user removed]

Transonic Combustion | Revolutionizing Combustion Technology

regards
Mech

[user removed]

Maybe in my lifetime.

Why ET3? | Evacuated Tube Transport Technologies

regards
Mech

[freebeard]

If it happens in your and my lifetimes, we'll prolly have to go to China to see it. I recall the earliest iteration I saw used underground tunnels and gravity to start and stop the train. Miles deep.

Speed in initial ET3 systems is 600km/h (370 mph) for in state trips, and will be developed to 6,500 km/h (4,000 mph) for international travel that will allow passenger or cargo travel from New York to Beijing in 2 hours. ET3 is networked like freeways, except the capsules are automatically routed from origin to destination.

ET3 capsules weigh only 183 kg (400 lbs), yet like an automobile, can carry up to six people or 367 kg (800 lbs) of cargo. Compared to high speed rail, ET3 needs only 1/20th the material to build because the vehicles are so light. With automated passive switching, a pair of ET3 tubes can exceed the capacity of a 32 lane freeway. ET3 can be built for 1/10th the cost of High Speed Rail, or 1/4th the cost of a freeway.

I wonder what it's like to go through an (cloverleaf?) interchange at 4000mph.

[user removed]

Deadly. I like vacuum tubes for short distances. ET3 is for long distances.

regards
Mech

[freebeard]

Kidding of course. New York—Beijing will be an express lane.

I don't get the vacuum tube/ET3 distinction.

[user removed]

ET3 is as close to a perfect vacuum as pracitcal. The other vacuum tubes would only need less than a .5 PSI negative pressure to work. Both have the power and fuel supply in one place and the vehicles have neither.

ET3 is a magnetic rail gun and you are the projective. The other is like the tubes at banks, where the atmosphere in the tubes also serves as a buffer between vehicles.

I like the idea ofshort range electric vehicles that converge on the vacuum tube and feed into it then exit where they work, or very close to it. Range would be a few miles.

regards
Mech

[arcosine]

Yea, all you have to do is dig a hole to China and jump in.

[user removed]

There is enough heat energy in the Earths core to provide a virtually infinite supply of energy to mankind and it would offset global warming (assuming it exists regardless of the source).

regards
Mech