Obturator ring

For other uses see Obturator

Obturator rings are a specific type of piston ring used in World War I aero engines to compensate for warping of the cylinders.

Purpose

The rotary aircraft engines of World War I (engines with the crankshaft fixed to the airframe and rotating cylinders) were notoriously difficult to keep cool when operating. Thus, their very thin walled steel cylinders would become distorted to an unacceptable level. Obturator rings, made of brass, were fitted to compensate for this out-of-roundness in much the same way as a leather washer does in a bicycle pump. Wear on the rings was considerable and they only lasted a matter of hours. By the time the war ended, technology and materials had advanced sufficiently to do away with these obturator rings.

See also

• Piston ring

This article about a mechanical engineering topic is a stub. You can help Wikipedia by expanding it.v · Categories: Aerospace engineering Mechanical engineering stubs Wikimedia Foundation. 2010. Игры ⚽ Поможем написать курсовую Commission on Higher Education Vamık Volkan Look at other dictionaries: Obturator — Contents 1 See also Obturator may refer to: In medicine: Obturator artery Obturator nerve Obturator vein Obturator externus muscle Obturator internus muscle Obturator membrane …   Wikipedia Obturator externus muscle — The obturator externus and nearby hip muscles (posterior view) …   Wikipedia Obturator internus muscle — The obturator internus and nearby muscles …   Wikipedia Obturator artery — Artery: Obturator artery The relations of the femoral and abdominal inguinal rings, seen from within the abdomen. Right side. (Obturator artery is visible at bottom.) …   Wikipedia Deep inguinal ring — Front of abdomen, showing surface markings for arteries and inguinal canal. (Abdominal inguinal ring labeled at lower left.) Latin annulus inguinalis profundus …   Wikipedia Superficial inguinal ring — Front of abdomen, showing surface markings for arteries and inguinal canal. (Subcutaneous inguinal ring labeled at lower left.) …   Wikipedia Crura of superficial inguinal ring — The subcutaneous inguinal ring. (Superior crus labeled at bottom right.) Latin crus mediale anuli inguinalis superficialis, crus laterale anuli inguinalis superficialis Gray s …   Wikipedia Obturating ring — For other uses see Obturator An obturating ring is a ring of relatively soft material designed to obturate under pressure to form a seal. Obturating rings are often found in artillery and other ballistics applications, and similar devices are… …   Wikipedia Compression ratio — For compression ratio in data compression, see data compression ratio. The compression ratio of an internal combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamber from its… …   Wikipedia Oil pump (internal combustion engine) — This article is about a part in an internal combustion engine. For other uses, see Oil pump. Oil circulation system …   Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”