back pressure


back pressure
noun
1. : residual pressure on the exhaust side of a steam-engine piston against which the steam on the intake side must work
2. : opposition to flow of a liquid or gas due to friction, inertia, gravity, or other cause

* * *

back pressure noun (engineering)
1. The pressure opposing the motion of the piston of an engine on its exhaust stroke
2. The exhaust pressure of a turbine
• • •
Main Entry:back

* * *

back pressure,
pressure in a direction opposite to normal, such as pressure against the discharge of a cylinder in an exhaust system, or pressure against the flow in any circulation of fluids, as caused by an obstruction.

Useful english dictionary. 2012.

Look at other dictionaries:

  • Back pressure — usually refers to the pressure exerted on a moving fluid by obstructions or tight bends in the confinement vessel along which it is moving, such as piping or air vents, against its direction of flow. For example, an automotive exhaust muffler… …   Wikipedia

  • Back pressure — Back Back, a. 1. Being at the back or in the rear; distant; remote; as, the back door; back settlements. [1913 Webster] 2. Being in arrear; overdue; as, back rent. [1913 Webster] 3. Moving or operating backward; as, back action. [1913 Webster]… …   The Collaborative International Dictionary of English

  • Back pressure — Pressure Pres sure (?; 138), n. [OF., fr. L. pressura, fr. premere. See 4th {Press}.] 1. The act of pressing, or the condition of being pressed; compression; a squeezing; a crushing; as, a pressure of the hand. [1913 Webster] 2. A contrasting… …   The Collaborative International Dictionary of English

  • back pressure — [1] The resistance to the flow of exhaust gases through the exhaust system. By rerouting the exhaust gases for noise suppression, a muffler causes back pressure, but a straight pipe alone causes only minimal back pressure. Some engines require… …   Dictionary of automotive terms

  • back pressure — atgalinis slėgis statusas T sritis fizika atitikmenys: angl. back pressure; backpressure; return pressure vok. Gegendruck, m; Rückdruck, m rus. обратное давление, n pranc. contre pression, f; pression de retour, f …   Fizikos terminų žodynas

  • back pressure — pressure in direct opposition to the normal flow …   English contemporary dictionary

  • back pressure — A pressure exerted backward; in a field of fluid flow, a pressure exerted contrary to the pressure producing the main flow. Specifically, the pressure inside the exhaust system of a reciprocating engine that prevents the flow of burned gases from …   Aviation dictionary

  • back pressure — the pressure caused by the damming back of the blood in a heart chamber and its tributaries, due to an obstructive heart valve or failing myocardium …   Medical dictionary

  • Back pressure — Противодавление; Давление между печатным и офсетным цилиндрами …   Краткий толковый словарь по полиграфии

  • back pressure — ● ►en loc. ►PERIPH Fonction intelligente de contrôle de flux (flow control en anglais), dans le mode half duplex pour un répartiteur (switch). Il bloque l émission en cas de congestion (définition de Jean Pierre Kolly) …   Dictionnaire d'informatique francophone


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.