US Patent 11028775 Bleed air boosted engine oil cooler
Patent 11028775 was granted and assigned to The Boeing Company on June, 2021 by the United States Patent and Trademark Office.
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An aircraft engine system has a turbofan engine with a lubricating oil system. An oil pump is connected to pump oil from the oil tank through a cooling circuit to the turbofan engine. The cooling circuit has a bleed air boosted engine oil cooler assembly with a liquid/air heat exchanger (LAHEX) connected to an oil inlet conduit and receiving fan air from a high bypass fan of the turbofan engine as the cooling working fluid. The LAHEX is connected to an oil exit conduit. An ejector downstream of the LAHEX receives bleed air from a compressor section of the turbofan engine. The ejector draws the fan air through the LAHEX.
US Patent 11028775 Bleed air boosted engine oil cooler
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