What is K value in turbochargers?
It is a distance between the rotor shaft end and the flange of bearing cover measured by blower side.
Purpose of K value in turbochargers?
To ensure that rotating impeller does not to touch the stationary blower casing cover in case of thrust bearing worn out.
Remove the suction cover and measure the critical clearance . It is the distance between the
compressor end cover mounting face and shaft end. Mark it as K .
Pull the rotor shaft towards the compressor side until the impeller comes in contact with the
insert and determine K2.
Impeller clearance L= K- K2
Thrust the rotor shaft towards the turbine side until the turbine disc and nozzle ring comes in
contact with each other and measure K1
Disc clearance M=K1-K
The above measured clearance is very important as this will determine the proper functioning of the labyrinth seal between the impeller and exhaust shield and also the alignment of the shaft.
It is a distance between the rotor shaft end and the flange of bearing cover measured by blower side.
Purpose of K value in turbochargers?
To ensure that rotating impeller does not to touch the stationary blower casing cover in case of thrust bearing worn out.
Remove the suction cover and measure the critical clearance . It is the distance between the
compressor end cover mounting face and shaft end. Mark it as K .
Pull the rotor shaft towards the compressor side until the impeller comes in contact with the
insert and determine K2.
Impeller clearance L= K- K2
Thrust the rotor shaft towards the turbine side until the turbine disc and nozzle ring comes in
contact with each other and measure K1
Disc clearance M=K1-K
The above measured clearance is very important as this will determine the proper functioning of the labyrinth seal between the impeller and exhaust shield and also the alignment of the shaft.
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