一种车用柴油机氨逃逸在线检测方法及系统
By combining exhaust conditions and engine data, and utilizing SCR catalyst temperature changes and urea injection data, parameters for ammonia storage and nitrogen oxide conversion are constructed, solving the inaccuracy problem of ammonia slip detection in existing technologies and achieving high reliability and adaptability of online detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BENGBU COLLEGE
- Filing Date
- 2026-01-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies cannot fully reflect changes in ammonia storage and nitrogen oxide conversion processes inside the SCR catalyst in online ammonia slip detection, resulting in judgment results being greatly affected by fluctuations in operating conditions, and failing to fully utilize the characteristics of different operating states of the SCR catalyst.
By acquiring exhaust status data and engine operation data, combined with SCR catalyst temperature changes and urea injection data, ammonia storage change parameters and nitrogen oxide conversion change parameters are constructed. Using the state switching time and effective time range, ammonia escape judgment characteristic parameters are generated to achieve online detection.
It improves the pertinence and reliability of ammonia slip detection, reduces the risk of misjudgment, and can make accurate judgments during periods of high ammonia release risk. It adapts to complex operating conditions and meets the needs of online monitoring and emission control for vehicle diesel engines.
Smart Images
Figure CN121676122B_ABST
Abstract
Citation Information
Patent Citations
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