Exhaust gas temperature assist for two-cycle uniflow scavenged diesel engines at lower engine loads with various engine operating schemes
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United States of America Patent
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May 17, 2022
Grant Date -
Feb 25, 2021
app pub date -
Oct 12, 2020
filing date -
May 21, 2018
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Abstract
A method of raising exhaust gas temperatures of a two-cycle uniflow scavenged engine at lower loads. At lower loads, the exhaust valves are activated with a frequency that is less frequent than every engine cycle. This exhaust valve deactivation may be combined with additional engine operating strategies, such as by using fewer than all cylinders as combusting cylinders, adjusting fueling to combusting cylinders, and reducing compressor output.
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