用于微粒过滤器负荷估算的系统和方法
By monitoring PF temperature and oxygen flow during engine shutdown, the carbon soot combustion rate and amount are estimated, solving the problem of inaccurate carbon soot load estimation in the prior art, optimizing PF regeneration arrangements, and improving engine performance and fuel economy.
CN109488430BActive Publication Date: 2026-07-17FORD GLOBAL TECH LLC
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FORD GLOBAL TECH LLC
- Filing Date
- 2018-08-31
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing technologies cannot accurately estimate the soot load on exhaust particulate filters during non-combustion periods of the engine, leading to inaccurate regeneration arrangements that affect engine performance and fuel economy.
Method used
By monitoring PF temperature and oxygen flow during engine shutdown, the soot combustion rate and amount are estimated, and the soot load is updated to accurately estimate the PF load when the engine restarts.
Benefits of technology
It enables accurate estimation of PF load during engine restart, optimizes regeneration arrangements, and improves fuel efficiency and emission quality.
✦ Generated by Eureka AI based on patent content.
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Figure CN109488430B_ABST
Abstract
本发明涉及用于微粒过滤器负荷估算的系统和方法。提供了用于在发动机非燃烧状况期间监测排气微粒过滤器(PF)碳烟负荷的变化的方法和系统。在一个示例中，一种方法可以包括：响应于紧在发动机关闭之前的高于阈值的PF温度，估算当所述发动机不再燃烧时的碳烟燃烧速率，并且部分地基于所述碳烟燃烧速率估算在紧接着的发动机起动期间及开始时PF上的碳烟负荷。
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