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expansion valve gear

См. также в других словарях:

  • Expansion valve — Expansion Ex*pan sion, n. [L. expansio: cf. F. expansion.] 1. The act of expanding or spreading out; the condition of being expanded; dilation; enlargement. [1913 Webster] 2. That which is expanded; expanse; extend surface; as, the expansion of a …   The Collaborative International Dictionary of English

  • Valve gear — The valve gear of a steam engine is the mechanism that operates the inlet and exhaust valves to admit steam into the cylinder and allow exhaust steam to escape, respectively, at the correct points in the cycle. It is sometimes referred to as the… …   Wikipedia

  • Walschaerts valve gear — The Walschaerts valve gear is a type of steam engine valve gear invented by Belgian railway mechanical engineer Egide Walschaerts in 1844. The gear is sometimes named without the final s , since it was incorrectly patented under that name. It was …   Wikipedia

  • Baker valve gear — was the main competitor to Walschaerts valve gear for steam locomotives in the United States. Strictly speaking it was not a valve gear but a variable expansion mechanism adapted to the Walschaerts layout replacing the expansion link and sliding… …   Wikipedia

  • Stephenson valve gear — The Stephenson valve gear or Stephenson link or shifting link [Snell, J B (1971). Mechanical Engineering: Railways, Longman Co, London] is a simple design of valve gear that was widely used throughout the world for all kinds of steam engine. It… …   Wikipedia

  • Southern valve gear — was briefly popular on steam locomotives in the United States. It combines elements of the Walschaerts and Baker patterns.HistorySouthern valve gear was devised by locomotive designers on the Southern Railway (US) and used on many locomotives on… …   Wikipedia

  • Expansion gear — Expansion Ex*pan sion, n. [L. expansio: cf. F. expansion.] 1. The act of expanding or spreading out; the condition of being expanded; dilation; enlargement. [1913 Webster] 2. That which is expanded; expanse; extend surface; as, the expansion of a …   The Collaborative International Dictionary of English

  • Expansion — Ex*pan sion, n. [L. expansio: cf. F. expansion.] 1. The act of expanding or spreading out; the condition of being expanded; dilation; enlargement. [1913 Webster] 2. That which is expanded; expanse; extend surface; as, the expansion of a sheet or… …   The Collaborative International Dictionary of English

  • Expansion coupling — Expansion Ex*pan sion, n. [L. expansio: cf. F. expansion.] 1. The act of expanding or spreading out; the condition of being expanded; dilation; enlargement. [1913 Webster] 2. That which is expanded; expanse; extend surface; as, the expansion of a …   The Collaborative International Dictionary of English

  • Expansion curve — Expansion Ex*pan sion, n. [L. expansio: cf. F. expansion.] 1. The act of expanding or spreading out; the condition of being expanded; dilation; enlargement. [1913 Webster] 2. That which is expanded; expanse; extend surface; as, the expansion of a …   The Collaborative International Dictionary of English

  • Expansion joint — Expansion Ex*pan sion, n. [L. expansio: cf. F. expansion.] 1. The act of expanding or spreading out; the condition of being expanded; dilation; enlargement. [1913 Webster] 2. That which is expanded; expanse; extend surface; as, the expansion of a …   The Collaborative International Dictionary of English

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