back pressure

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back pressure

1. (Mechanical Engineering) engineering

a. the pressure that opposes the motion of a piston on its exhaust stroke in an internal-combustion engine

b. the exhaust pressure in external combustion engines

2. (Pathology) med the local pressure that builds up when fluid flow is obstructed in the cardiovascular or urinary systems

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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References in periodicals archive ?

Pipeline exploded as a result of back pressure due to which water supply to Karachi city was suspended.

Water supply to Karachi city suspended, pipeline bursts

Back pressure is the resistance to exhaust gas flow out of the engine as occasioned by the atmosphere and the size of the exhaust pipe.

CAR CLINIC: Don't split hairs, get a Vanguard

In a metering pump system, using a back pressure valve alone does nothing to improve fluid flow.

Blacoh Fluid Control Introduces New Hybrid Valve

In their study they have observed that Model 5 was the optimum design having 0.845 bar back pressure and 12.5 m/s exhaust velocity.

CFD analysis of IC engine exhaust manifold with respect to the performance of a turbocharger

For good landings, pilots need to have what I call a fine pitch control--not too much, not too little back pressure. What is right is up to pilot/air plane combination.

Endurance and gouges

The back pressure of blood in the aorta against the heart's aortic semilunar valve is higher than that against the pulmonic semilunar valve of the pulmonary trunk.

Structural adaptation

It features a new titanium exhaust system with larger diameter tailpipes, providing reduced back pressure.

BMW to develop production version of M4 GTS

When a U-Clip is placed on a shaft to hold a reel or core in place, the object being secured can create back pressure against the clip.