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PRCI PR-266-9721
- Re-Aeroing an Elliott L-40 Turbocharger
- Report / Survey by Pipeline Research Council International, 05/16/1999
- Publisher: PRCI
$75.00$150.00
L51813e
The National Gas Machinery Laboratory, Kansas State University
Need: Interest in turbocharger performance has escalated over the last several years. This escalation has been brought about by the gas transmission industry's need to: (1) reduce the Nox emissions from compressor sites and (2) increase the performance and reliability of the existing reciprocating engines used to drive transmission compressors. Once a turbocharger has been overhauled and reinstalled on an engine, attempts may be made to measure the turbocharger's performance and compare it to guaranteed values. This however is time consuming and costly and failure to meet the guaranteed performance values may put the site at risk of being shut down due to high emissions. By re-aeroing an existing turbocharger, it may be possible to reach a new design operating point that is established through detailed knowledge of the emissions guidelines, engine components, auxiliary systems, and turbocharger.
Benefit: This study examined the effects of component modifications on increased turbocharger performance for an Elliott L40 turbocharger. The Elliott turbocharger represents a significant installed population (2,512 L40 turbocharges manufactured to date) and thus the reason for choosing this particular turbocharger. Two major conclusions were derived from this study; (1) this particular modification does not substantially affect turbocharger turbine efficiency, (2) the turbocharger modifications will drastically alter the engine air flow load line.
Result: Evaluation of re-aeroing an Elliott L-40 turbocharger which can be applied to other manufacturers suggests that such a process is not cost effective for the user.
The National Gas Machinery Laboratory, Kansas State University
Need: Interest in turbocharger performance has escalated over the last several years. This escalation has been brought about by the gas transmission industry's need to: (1) reduce the Nox emissions from compressor sites and (2) increase the performance and reliability of the existing reciprocating engines used to drive transmission compressors. Once a turbocharger has been overhauled and reinstalled on an engine, attempts may be made to measure the turbocharger's performance and compare it to guaranteed values. This however is time consuming and costly and failure to meet the guaranteed performance values may put the site at risk of being shut down due to high emissions. By re-aeroing an existing turbocharger, it may be possible to reach a new design operating point that is established through detailed knowledge of the emissions guidelines, engine components, auxiliary systems, and turbocharger.
Benefit: This study examined the effects of component modifications on increased turbocharger performance for an Elliott L40 turbocharger. The Elliott turbocharger represents a significant installed population (2,512 L40 turbocharges manufactured to date) and thus the reason for choosing this particular turbocharger. Two major conclusions were derived from this study; (1) this particular modification does not substantially affect turbocharger turbine efficiency, (2) the turbocharger modifications will drastically alter the engine air flow load line.
Result: Evaluation of re-aeroing an Elliott L-40 turbocharger which can be applied to other manufacturers suggests that such a process is not cost effective for the user.
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