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Qaagi - Book of Why

Causes

Effects

changing gears or backing off the throttle quickly and is designed for turbo charged engines running boost pressure(passive) caused bycompressor pressure surge

when the diverter or blow - off valve vents only just enough airto preventcompressor surge

changing gears or backing off the throttle quickly and is designed for turbo charged engines running up to 25 psi boost(passive) caused bycompressor pressure surge

changing gears or backing off the throttle quickly and is designed for turbo charged engines running high boost pressure(passive) caused bycompressor pressure surge

changing gears or backing off the throttle quickly and is designed for turbocharged engines running up to 25 psi boost(passive) caused bycompressor pressure surge

orderto preventcompressor surge

operation in the lower left portion of this curvewould causecompressor surge

an HKS blow - off valve ... to helppreventcompressor surge

controller initiating corrective actionsto preventa compressor surge

to which a BLITZ blow off valvewill preventcompressor surge

The role of the blow off valve isto preventcompressor surge

a dual BOV ... to helppreventcompressor surge

The designed purpose of a BOV isto preventcompressor surge

on some turbocharger conditionscan causecompressor surge

A Turbosmart Raceport blow - off valvepreventscompressor surge

changing gears or backing off the throttle and is comfortable running up to 35 psi(passive) caused bycompressor pressure surge

14 , 3236 3246 Bachellerie , J. Progressive blocking of the air filter in servicemay causecompressor surge

the valve ... requiredto preventsurge of the compressor

a tight BoVwill causecompressor surge

A BoV is usedto preventcompressor surge

the absence of a BOV(passive) caused byclassic compressor surge

Benslidin180 BOV isto preventcompressor surge

A BOV 's purpose isto preventcompressor surge

The main function of the turbo blow - off valve isto preventcompressor surge

engine deterioration(passive) may be caused byCompressor surge

startupto preventcompressor surge

said vanesto preventsurge of said compressor

Blowoff valves are usedto preventcompressor surge

the ability to control the pressure of the refrigerant reaching the condenser ( 41 ... if necessaryto preventcompressor surge

valves also helpto preventcompressor surge

pressure to increase uncontrollablyultimately leadingto a compressor surge

A large BOV is recommendedto preventcompressor surge

to control the boost and BOVto preventcompressor surging

bov ... the many other thingscausecompressor surge

spool time ... helpspreventcompressor surge

the back pressure in a compressor , which helps to reduce the angle of attack of the rotor blades and thus helpspreventcompressor surge

the BOV wo n't open thencausingcompressor surge

that require a high flowing BOVto preventcompressor surge

Co - surge ” is another phenomenon unique to twin - turbo engines that results when an air flow imbalance exists between competing compressorsleadingone compressor to surge

In some gas turbine applications , there are instances of gas turbine plant operation where the gas turbine pressure ratio reaches the operating pressure ratio limit of the compressorresultingin compressor surge

to turbo damage or even failureleadsto turbo damage or even failure

serious damage ( to the turbocausesserious damage ( to the turbo

various degrees of damage to an enginecausingvarious degrees of damage to an engine

equipment damagecan causeequipment damage

to damage your turboscreatedto damage your turbos

compressor damagecausingcompressor damage

serious damage to your turbochargercan causeserious damage to your turbocharger

from the buildup of boost pressure in the chargeis causedfrom the buildup of boost pressure in the charge

vibration and compressor blades damagecan causevibration and compressor blades damage

catastrophic damage to turbine compressorscan causecatastrophic damage to turbine compressors

mechanical damage to the internals of a compressorcan causemechanical damage to the internals of a compressor

to vibration in the compressor shaft and serious damage to the compressorcan leadto vibration in the compressor shaft and serious damage to the compressor

severe vibration and damage in the machine and the associated piping systemcan causesevere vibration and damage in the machine and the associated piping system

in a loss of capacity and may cause serious damage to the compressorresultsin a loss of capacity and may cause serious damage to the compressor

impeller to hit housing if blow - off valve is not used to release excess boost pressure that engine connot processcan causeimpeller to hit housing if blow - off valve is not used to release excess boost pressure that engine connot process

to the unit malfunctioning , including rapid flow reversals and changes in axial thrust , high vibration and damage to rotor seals and bearings , which could necessitate equipment replacementcan leadto the unit malfunctioning , including rapid flow reversals and changes in axial thrust , high vibration and damage to rotor seals and bearings , which could necessitate equipment replacement

strong oscillations of pressurecausesstrong oscillations of pressure

oftenwill ... causeoften

the inverter to tripcausesthe inverter to trip

rapidly cycling pressure fluctuationscreatesrapidly cycling pressure fluctuations

the impeller to strike the housingcan causethe impeller to strike the housing

in the reversal of the flow through the compressor and the expulsion of the previously compressed airmay resultin the reversal of the flow through the compressor and the expulsion of the previously compressed air

essentiallycreatesessentially

to oscillations in compressor flows and internal pressureleadsto oscillations in compressor flows and internal pressure

severe aerodynamic fluctuation in the compressorcan causesevere aerodynamic fluctuation in the compressor

the one(passive) caused bythe one

to fuel flow values that were too low to maintain the N1 level required by the crewledto fuel flow values that were too low to maintain the N1 level required by the crew

The unstable performance(passive) caused byThe unstable performance

from a variety of reasons , such as , for example , when the compressor inlet profile of airflow pressure or temperature becomes unduly distorted during normal operation of the compressormay resultfrom a variety of reasons , such as , for example , when the compressor inlet profile of airflow pressure or temperature becomes unduly distorted during normal operation of the compressor

a cold pipe pulsecreatinga cold pipe pulse

adverse conditions(passive) can be caused byadverse conditions

That kind of thrust wear(passive) is caused byThat kind of thrust wear

the bearing failure(passive) caused bythe bearing failure

When drivingwill ... createWhen driving

to engine failure in jet enginescan leadto engine failure in jet engines

to a flame - out of both enginesledto a flame - out of both engines

when the compressor does not have the capacity to absorb momentary disturbancesmay resultwhen the compressor does not have the capacity to absorb momentary disturbances

to NVH issues such as undesirable noise from the engine intake systemcan leadto NVH issues such as undesirable noise from the engine intake system

excessive noisecan causeexcessive noise

in quicker turbo responseresultingin quicker turbo response

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