Paul,

What was the largest Wankel engine ever built? What was it's dimensions?

Bruce Smith

Big!

Paul Lamar



Paul,

Was that for a railroad engine or a ship?

Bruce Smith

I think that drove a compressor. Worked for years 24 hours a day and ran
on
natural gas.

Paul Lamar


One version offered to the Navy By John Deer as a replacement for the
Fairbanks Morse 38D81/8 opposed piston two cycle diesel for alternator
drives on
ships. 8 pieces on aircraft carriers. two pieces on each submarine.

Lynn E. Hanover



Is that the same design pictured? I read somewhere that Ingersoll Rand
bought the design for that compressor engine from John Deere. If so it's
remarkably small for a ship powerplant.

Everett



See this link:
http://www.der-wankelmotor.de/Motoren/Ingersol_Rand/ingersol_rand.html

Ingersoll-Rand erwarb seine Wankel-Lizenz 1972. Man stellte
Wankel-Gasmotoren her. Der IR-2500 brachte 550 PS bei 1000 Upm aus einem
Kammervolumen von 41 Liter. Die Zweischeiben-Ausführung bringt 1000 PS.
Der Motor hat ein TBO von 10000 Stunden.
Mit 41Liter Kammervolumen sind dies die größten Wankelmotoren. Ein
Ingersoll-Rand Wankelmotor hält
auch den Lebensdauerrekord mit über 41000 Stunden, ohne Überholung. Die
Motoren wurden bis 1986 gebaut. Der Verbrauch liegt 10% niedriger als
bei Gasturbinen und 30% niedriger als bei Hubkolben- motoren.
© Photo Audi NSU

Rough translation:
Ingersoll Rand took out a Wankel License in 1972. A Gas Wankel Engine
was built. The model IR 2500 achieved 550 HP at 1000 rpm having a
chamber volume of 41 Liter (~ 2500 cuin). A two rotor versions generates
1000 Hp.
TBO is 10,000 hrs.
Having 41 Liter chamber volume makes it the largest Wankel engine built.
An Ingersoll Rand Wankel engine also holds the durability record for
longest hours run at 41,000 hrs without maintenance.
The engines were built in 1966. Fuel consumption is 10% below that of
gas turbines and 30% less than that of reciprocating piston engines

Rolf Pfeiffer

I think that last sentence is reversed or wrong Rolf.

I would say 10% higher than a piston engine and 30% less
than a turbine.

Paul Lamar



I agree, with you Paul, it must be the other way around. 30% better than
the gas turbines and 10 under the Recips.

I just repeated what the German text said. They must have reported it
incorrectly. It can't be as stated in the German website.

Rolf