START A PETITION 25,136,189 members: the world's largest community for good
START A PETITION
x
Oct 11, 2013

Corliss Engine Group Gear Mechanisms:  Corliss steam engine

A Corliss steam engine (or Corliss engine) is a steam engine, fitted with rotary valves and with variable valve timing patented in 1849, invented by and named after the American engineer George Henry Corliss in Providence, Rhode Island.

Engines fitted with Corliss valve gear offered the best thermal efficiency of any type of stationary steam engine until the refinement of the uniflow steam engine and steam turbine in the 20th century. Corliss engines were generally about 30 percent more fuel efficient than conventional steam engines with fixed cutoff.This increased efficiency made steam power more economical than water power, allowing industrial development away from millponds.

Corliss engines were typically used as stationary engines to provide mechanical power to line shafting in factories and mills and to drive dynamos to generate electricity. Many were quite large, standing many metres tall and developing several hundred horsepower, albeit at low speed, turning massive flywheels weighing several tons at about 100 revolutions per minute. Some of these engines have unusual roles as mechanical legacy systems and because of their relatively high efficiency and low maintenance requirements, some remain in service in early 21st century (see, for example, the engines at the Hook Norton Brewery and the Distillerie Dillon in the list of operational engines).

Contents 


1 Corliss engine mechanisms

1.1 Corliss valve gear

1.2 Corliss valves

1.3 Barring and barring engines

2 Company history

3 Centennial Engine

4 List of operational engines

5 See also

6 References

7 External links


Corliss engine mechanisms

Corliss engines have four valves for each cylinder, with steam and exhaust valves located at each end. Corliss engines incorporate distinct refinements in both the valves themselves and in the valve gear, that is, the system of linkages that operate the valves.

The use of separate valves for admission and exhaust means that neither the valves nor the steam passages between cylinders and valves need to change temperature during the power and exhaust cycle, and it means that the timing of the admission and exhaust valves can be independently controlled. In contrast, conventional steam engines have a slide valve or piston valve that alternately feeds and exhausts through passages to each end of the cylinder. These passages are exposed to wide temperature swings during engine operation, and there are high temperature gradients within the valve mechanism itself.

Clark (1891) commented that the Corliss gear 'is essentially a combination of elements previously known and used separately, affecting the cylinder and the valve-gear'.The origins of the Corliss gear with regard to previous steam valve gear was traced by Inglis (1868).

Corliss Engine Group Gear Mechanisms

Visibility: Everyone
Posted: Friday October 11, 2013, 5:45 pm
Tags: group engine gear mechanisms Corliss [add/edit tags]

Group Discussions
Comments
Or, log in with your
Facebook account:

Author

Mathilde R.
female, age 21,
Denmark
MATHILDE'S SHARES
No shares


SHARES FROM MATHILDE'S NETWORK
No shares


MORE MEMBER BLOGS
Mar 31
Blog: How to Extend the Life of your TRIAD Boilers by Kayleigh L.
(0 comments  |  discussions ) — \\nHow to Extend the Life of your TRIAD Boilers \\r\\n \\r\\nCorlis Engine Review\\r\\nEvery user desires to prolong the life of a unit. TRIAD assists their clients in achieving this important objective by informing them of ways they can avoid problems... more
Feb 27
Blog: Dr Oz Weight Loss - The 100% Natural And Very Efficient Diet Pill by Debra S.
(0 comments  |  discussions ) — \\nYes, Dr. Oz called Garcinia Cambogia Extract (HCA) the Holy Grail of Weight Loss. He went on to say, “Anytime I see a scientist get this excited about something like Garcinia Cambogia Extract and when I looked through some of this research and... more
Blog: My Favorite Websites by krysta I.
(0 comments  |  discussions ) — \\nIFAW: www.ifaw.org\\r\\nOCEANA www.oceana.org\\r\\nPETA: www.peta.org\\r\\nEARTH 911: www.earth911.org\\r\\nANI MALs ASIA: www.animalsasia.org\\r\\n \\r\\n\\r\\n\\n more
Feb 21
Blog: testing one two three by Geoff M.
(0 comments  |  discussions ) — hello world more
Blog: Garcinia Cambogia Reviews From Actual People Garcinia Pure Extract Is A Huge Success February 20 by Dany M.
(0 comments  |  0 discussions ) — \\nGarcinia Cambogia Reviews From Actual People Garcinia Pure Extract Is A Huge Success February 20\\r\\nGarcinia Cambogia System The Dr. Oz Lose Weight Quick Process Without Having Side Effects\\r\\nHe went on to say, “At any time I see a researcher... more
 
Content and comments expressed here are the opinions of Care2 users and not necessarily that of Care2.com or its affiliates.