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Lubrication system for waste heat recovery gear box

  • US 10,513,975 B2
  • Filed: 03/16/2018
  • Issued: 12/24/2019
  • Est. Priority Date: 10/01/2015
  • Status: Active Grant
First Claim
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1. A combustion engine comprising:

  • a crankshaft;

    a waste heat recovery system including an expander having an expander shaft;

    a lube pump;

    an output shaft coupled to the lube pump;

    a first speed-reducing means for transferring power from the expander shaft to the output shaft to drive the lube pump;

    a second speed-reducing means for transferring power from the output shaft to the crankshaft; and

    an expander bearing supporting the expander shaft, a lube sump in a power drive housing, and a lube discharge rifle in the power drive housing, wherein the lube pump is configured to suction lubrication fluid from the lube sump and discharge the lubrication fluid through the lube discharge rifle to lubricate the expander bearing and return the lubrication fluid to the lube sump.

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