Check patentability & draft patents in minutes with Patsnap Eureka AI!

Leaky injector mitigation action for vehicles during idle stop

A fuel injector and idling technology, applied in fuel injection control, engine starting, machine/engine, etc., can solve the problems of increasing engine damage, weakening engine lubrication, etc., and achieve the effect of reducing engine emissions

Active Publication Date: 2017-03-15
FORD GLOBAL TECH LLC
View PDF15 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fuel leaks during extended idle stops can also allow fuel to seep past the piston rings and into the crankcase where the seeped fuel can dilute the engine oil and impair engine lubrication, increasing the likelihood of engine damage

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
  • Leaky injector mitigation action for vehicles during idle stop
  • Leaky injector mitigation action for vehicles during idle stop
  • Leaky injector mitigation action for vehicles during idle stop

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The following description relates to systems and methods for controlling a vehicle engine with fuel injector leakage during idle stop. In one example, a vehicle system includes a figure 1 The engine to which the fuel supply system configured in the engine supplies fuel. exist figure 2 A detailed schematic diagram of one cylinder of the engine is illustrated in . image 3 and Figure 4 A method of identifying an engine cylinder with a leaking fuel injector and repositioning the engine to mitigate the effects of the fuel leak during idle stop is illustrated. Figure 5 example plots showing fuel pump operation and fuel rail pressure during engine stop, and Figure 6 Illustrating example plots of intake and exhaust valve positions after repositioning engine cylinders with a starter motor during a four-stroke engine cycle.

[0014] exist figure 1 A vehicle system 1 including a fuel system 20 is illustrated in FIG. Fuel system 20 delivers fuel to engine 10 having a pl...

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 application discloses leaky injector mitigation action for vehicles during idle stop. According to the invention, methods and systems are provided for mitigating the effects of a leaky fuel injector during vehicle idle stop conditions. In one example, a method may include identifying the cylinder with a leaky fuel injector, and at or during engine shutdown, positioning the engine to a selected position based on the identified cylinder such that an exhaust valve of the identified cylinder is at least partly open.

Description

technical field [0001] The present invention generally relates to methods and systems for controlling a vehicle engine having fuel injector leakage during idle stop. Background technique [0002] Engine fuel injectors may become degraded and begin to leak fuel to corresponding engine cylinders. Such leaking fuel injectors can degrade fuel consumption, increase emissions, and cause engine starting problems. Attempts to solve the problem of fuel injector leakage may include corrective actions that are implemented while the engine is running. In one example approach, a lean air-fuel mixture is delivered to cylinders with leaking fuel injectors to compensate for the presence of leaking fuel, and / or other cylinders may be operated lean. [0003] However, the inventors herein have recognized a problem with using the above approach, as the above mentioned corrective actions can only be implemented while the engine is running and not during engine off conditions. Specifically, de...

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
IPC IPC(8): F02D13/08F02D41/22F02D41/00
CPCF02D13/08F02D41/008F02D41/22F02D2041/225F02D41/0295F02D41/042F02N11/0814F02D2200/0814F02N2019/008F02N2200/023F02D41/221F02D17/04F02D35/0007F02D35/02F02D41/08F02D41/3005
Inventor A·M·杜达尔
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