This conversion procedure was also performed for temperature measurements at the impeller exit, diffuser vane
exit and return channel bend.
The VGT's diffuser vane and the turbine nozzle blade angles can be varied in real time so as to optimize overall compressor efficiency at any operating point.
For maximum efficiency, the angle [Alpha] of the true velocity leaving the compressor wheel, c, should exactly match the diffuser vane angle [[Alpha].
A properly designed control scheme could modulate the diffuser vane angle and the turbine nozzle ring blade angle to optimize not only turbocharger performance but also overall engine performance.
The compressor efficiency gain was achieved by advancing the design of the compressor impeller, volute, variable diffuser vanes
, inlet guide vanes and controls.
Improvements in performance characteristics of single-stage and multistage centrifugal compressors by simultaneous adjustments of inlet guide vanes and diffuser vanes
The effective cross-sectional area was the fraction of the outlet's cross-sectional area not blocked by diffuser vanes
, and was taken, since values for the actual diffusers were not available, from manufacturer's data for similar diffuser grills, to be 0.
This device has the advantage of a sensor probe that can get into the access areas of a ventilation system and between diffuser vanes
to measure humidity.
Only in rare cases are adjustable diffuser vanes