Supercharge Your Innovation With Domain-Expert AI Agents!

Method and system for hot spark plug fouling detection

A spark plug and fouling technology, applied in ignition safety devices, spark ignition controllers, engine ignition, etc., can solve problems such as accumulation of fuel additives that cannot be easily removed, exhaust catalyst efficiency degradation, etc.

Active Publication Date: 2020-08-18
FORD GLOBAL TECH LLC
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in eventual degradation of exhaust catalyst efficiency and the need for frequent catalyst replacement
Additionally, buildup of fuel additives cannot be easily removed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for hot spark plug fouling detection
  • Method and system for hot spark plug fouling detection
  • Method and system for hot spark plug fouling detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The following description relates to systems and methods for inferring fouling of spark plugs due to accumulation of fuel additives thereon. Spark plugs are included in engine systems such as figure 1 engine system). Spark plug fouling may be inferred based on a comparison between actual and estimated exhaust gas temperatures. The controller can execute control programs such as figure 2 example program) to respond to actual exhaust gas temperatures higher than those based on engine operating conditions (such as air-fuel ratio, Figure 5 ) estimated presumed spark plug thermal fouling. The controller may also monitor a number of parameters for other signals of spark plug fouling to increase confidence in spark plug fouling predictions based on exhaust gas temperature. For example, the engine controller may monitor changes in the adaptive knock term, engine pre-ignition rate, engine misfire rate, and engine exhaust oxygen sensor switching frequency (or other paramete...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to methods and systems for hot spark plug fouling detection. Methods and systems are provided for inferring fouling of spark plugs due to accumulation of fuel additives thereon. In one example, the engine controller may infer spark plug thermal fouling based on higher than expected exhaust gas temperatures by correlating elevated exhaust temperatures to late combustion phasing due to additive buildup. A confidence factor for spark plug fouling detection may be increased based on data regarding simultaneous misfire and / or pre-ignition events.

Description

technical field [0001] The present invention relates to methods and systems for detecting and resolving spark plug fouling due to the presence of fuel additives in internal combustion engines. Background technique [0002] An engine ignition system may include a spark plug for delivering electrical current to a combustion chamber of a spark-ignition engine to ignite the air-fuel mixture and initiate combustion. Depending on engine operating conditions, spark plug fouling can occur, wherein the firing tip of the spark plug insulator is coated with foreign matter such as fuel, oil, or soot. Once fouled, the spark plugs will not provide enough voltage to trigger cylinder combustion until the plugs are adequately cleaned or changed. [0003] Spark plug fouling caused by hot spark plugs is a significant problem in areas with poor fuel quality control. In some countries, fuel additives such as methylcyclopentadiene manganese tricarbonyl (MMT) are added to fuel to raise the octan...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/00F02B77/08F02D9/00
CPCF02B77/083F02D9/00F02D41/0007F02D41/0077F02D41/008F02D2041/0022F02P3/04F02P11/06F02P11/02F02P17/12
Inventor C·P·格鲁格拉G·J·胡伯茨N·W·莫罗
Owner FORD GLOBAL TECH LLC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com