A method for detecting and distinguishing engine pre-ignition and carbon deposition based on ion current
An ion current and engine technology, applied in combustion engine, engine control, machine/engine, etc., can solve the problem that the threshold judgment method is easy to cause misjudgment, and achieve the effect of protecting the engine structure, high timeliness, and reducing additional emissions
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment
[0042] like figure 1 As shown, the present invention provides a kind of engine pre-ignition detection method based on ion current, comprises the following steps:
[0043] A. Collect ion current signals and cylinder pressure signals under different working conditions of the engine (normal, pre-ignition, carbon deposition), where the ion current signals come from the electric field applied between the positive and negative electrodes of the spark plug. ;
[0044] B. Process the collected signal, and use the ion current signal to initially distinguish the pre-ignition cycle and the carbon deposition cycle, specifically: distinguish the pre-ignition and carbon deposition cycles from all data by the ion current signal amplitude in a period of time before the ignition time carbon cycle;
[0045] C. Use the cylinder pressure signal to mark the pre-ignition cycle and the pre-ignition time, specifically: calculate the heat release rate and combustion phase through the cylinder pressu...
PUM
![No PUM](https://static-eureka-patsnap-com.libproxy1.nus.edu.sg/ssr/23.2.0/_nuxt/noPUMSmall.5c5f49c7.png)
Abstract
Description
Claims
Application Information
![application no application](https://static-eureka-patsnap-com.libproxy1.nus.edu.sg/ssr/23.2.0/_nuxt/application.06fe782c.png)
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap