Invention Grant
- Patent Title: Exhaust gas temperature assist for two-cycle uniflow scavenged diesel engines at lower engine loads with various engine operating schemes
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Application No.: US17068270Application Date: 2020-10-12
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Publication No.: US11333091B2Publication Date: 2022-05-17
- Inventor: Michael B. Riley , John Craig Hedrick , Steven Gerard Fritz
- Applicant: Yelir, Inc.
- Applicant Address: US CO Fort Collins
- Assignee: Yelir, Inc.
- Current Assignee: Yelir, Inc.
- Current Assignee Address: US CO Fort Collins
- Agency: Livingston Law Firm
- Main IPC: F02D41/00
- IPC: F02D41/00 ; F02D41/02 ; F02D13/06 ; F02D41/14 ; F02B75/02

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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