exhaust back pressure

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• exhaust back pressure — any pressure holding back the flow of the gases in an exhaust system. Pressure exerted in exhaust system in reverse direction. Also called back pressure …   Dictionary of automotive terms

• exhaust back pressure — The pressure produced in the exhaust system of a reciprocating engine as a result of the length and the diameter of the exhaust pipe. The pressure opposes the flow of exhaust gases as they are forced out of the cylinders when the exhaust valve is …   Aviation dictionary

• exhaust back pressure transducer valve — (BPV or BPS) a device sued to sense exhaust pressure changes and control vacuum to the EGR valve in response to these changes …   Dictionary of automotive terms

• 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 — 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

• Exhaust pulse pressure charging — (EPPC) is a system for supercharging two stroke diesel engines of the loop scavenge type. Loop scavenge engines cannot be pressure charged in the same way as uniflow engines or four stroke engines because the inlet and exhaust ports are open at… …   Wikipedia

• 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 — 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… …   Useful english 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

• Exhaust system — Exhaust manifold (chrome plated) on a car engine …   Wikipedia

• Exhaust brake — Since diesel engines lack a throttle valve on the intake manifold, there is no intake vacuum when the engine is not fueling. The intake vacuum creates the slowing effect felt in gasoline engines when they are going down a hill with the foot off… …   Wikipedia