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Author Topic: Stumpf Uniflow Steam Engines  (Read 34325 times)
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« on: April 06, 2011, 12:31:30 PM »

Here is a book that I ran across about uniflow steam engines that were designed by Prof. J. Stumpf, apparently out of Germany.  Stumpf came up with some quite a sophisticated design for single cylinder steam engine that was reported to be as efficient as a compound engine.

Stumpf went on to actually have a number of these engines constructed, and apparently they did perform as he predicted.  Unfortunately, his designs arrived at the end of the steam engine era, but it would appear that the influence of the uniflow engine lasted far beyond this period.

Nordberg also had a Uniflow design (engraving included below).

The last engraving in this series mentions a cutoff value of 8% of the stroke.  Since the engine bearings and other parts are designed for initial pressure, these engines can work for extended periods of time under overload conditions, with double the normal horsepower output.

Detroit Diesel built a series of 2-stroke diesel engines in the 1940's that use the uniflow design, and they are considered some of the most reliable and maintainable diesel engines ever built.  We have operated a Detroit Diesel in the family for 39 years (671 inline model), and this engine continues to run flawlessly, although it does require an occasional rebuild.  The Detroit Diesel was designed to be easily rebuilt, and included replaceable cylinder liners, etc.
The 671 uses individual injectors, so failure of one or more of the injectors will not prevent the engine from starting and running.


* Stumpf-100.jpg (24.64 KB, 614x768 - viewed 517 times.)

* Stumpf-101.jpg (117.91 KB, 518x616 - viewed 474 times.)

* Stumpf-102.jpg (213.34 KB, 1110x738 - viewed 476 times.)

* Ludy-37.jpg (205.53 KB, 1438x884 - viewed 552 times.)

* Stumpf-01.jpg (237.74 KB, 1416x732 - viewed 474 times.)

* Stumpf-02.jpg (174.83 KB, 1096x880 - viewed 463 times.)

* Stumpf-03.jpg (161.84 KB, 1142x808 - viewed 433 times.)

* Stumpf-04.jpg (145.47 KB, 762x1032 - viewed 489 times.)

* Stumpf-05.jpg (152.28 KB, 910x1356 - viewed 430 times.)

* Stumpf-06.jpg (127.07 KB, 819x1135 - viewed 511 times.)

* Stumpf-07.jpg (123.11 KB, 842x840 - viewed 452 times.)

* Stumpf-08.jpg (90.83 KB, 771x863 - viewed 466 times.)

* Stumpf-09.jpg (145.08 KB, 944x894 - viewed 438 times.)

* Stumpf-10.jpg (179.54 KB, 808x1119 - viewed 450 times.)

* Stumpf-11.jpg (95.7 KB, 884x1068 - viewed 441 times.)
« Last Edit: March 02, 2014, 12:58:41 AM by admin » Logged

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admin
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TN


« Reply #1 on: April 06, 2011, 12:34:14 PM »

More Uniflow steam engines by Stumpf.


* Stumpf-12.jpg (109.21 KB, 850x1142 - viewed 415 times.)

* Stumpf-13.jpg (103.53 KB, 896x1170 - viewed 373 times.)

* Stumpf-14.jpg (78.3 KB, 926x708 - viewed 465 times.)

* Stumpf-15.jpg (142.49 KB, 1138x857 - viewed 407 times.)

* Stumpf-16.jpg (154.19 KB, 1155x890 - viewed 408 times.)

* Stumpf-17.jpg (137.97 KB, 1208x836 - viewed 449 times.)

* Stumpf-18.jpg (83.25 KB, 834x814 - viewed 444 times.)

* Stumpf-19.jpg (177.09 KB, 1423x660 - viewed 491 times.)

* Stumpf-20.jpg (230.6 KB, 1407x753 - viewed 466 times.)

* Stumpf-21.jpg (111.36 KB, 847x1322 - viewed 445 times.)

* Stumpf-22.jpg (137.4 KB, 832x1356 - viewed 455 times.)

* Stumpf-23.jpg (166.83 KB, 1191x701 - viewed 491 times.)

* Stumpf-24.jpg (184.76 KB, 1386x817 - viewed 448 times.)

* Stumpf-25.jpg (148.09 KB, 1351x765 - viewed 421 times.)

* Stumpf-26.jpg (152.9 KB, 886x975 - viewed 401 times.)
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admin
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Posts: 5853


TN


« Reply #2 on: April 06, 2011, 12:37:27 PM »

More Uniflow steam engines by Stumpf.


* Stumpf-27.jpg (174.14 KB, 1158x900 - viewed 418 times.)

* Stumpf-28.jpg (65.05 KB, 1305x564 - viewed 396 times.)

* Stumpf-29.jpg (93.71 KB, 1440x636 - viewed 393 times.)

* Stumpf-30.jpg (72.55 KB, 1400x418 - viewed 398 times.)

* Stumpf-31.jpg (103.58 KB, 1418x612 - viewed 403 times.)

* Stumpf-32.jpg (188.69 KB, 985x864 - viewed 478 times.)

* Stumpf-33.jpg (109.76 KB, 1132x854 - viewed 388 times.)

* Stumpf-34.jpg (121.03 KB, 1222x782 - viewed 415 times.)

* Stumpf-35.jpg (169.9 KB, 894x1008 - viewed 480 times.)

* Stumpf-36.jpg (120.13 KB, 891x812 - viewed 426 times.)

* Stumpf-37.jpg (160.83 KB, 1108x916 - viewed 492 times.)

* Stumpf-38.jpg (96.31 KB, 784x1342 - viewed 414 times.)

* Stumpf-39.jpg (116.92 KB, 1301x864 - viewed 448 times.)

* Stumpf-40.jpg (165.09 KB, 1362x782 - viewed 496 times.)

* Stumpf-41.jpg (210.99 KB, 1446x898 - viewed 457 times.)
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