Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for controlling a spark-ignition direct-injection internal combustion engine at low loads

A spark ignition and injection technology, applied in spark ignition controllers, internal combustion piston engines, electrical control, etc., can solve problems such as increasing combustion instability and reducing fuel efficiency

Inactive Publication Date: 2011-01-12
GM GLOBAL TECH OPERATIONS LLC
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] however, excess fuel reformation to increase the operable range of controlled auto-ignition may increase combustion instability and thereby reduce fuel efficiency

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 for controlling a spark-ignition direct-injection internal combustion engine at low loads
  • Method for controlling a spark-ignition direct-injection internal combustion engine at low loads
  • Method for controlling a spark-ignition direct-injection internal combustion engine at low loads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0069] Referring now to the drawings, the illustrations therein are for illustration of certain exemplary embodiments only and are not intended to limit the invention. figure 1 An internal combustion engine 10 constructed in accordance with an embodiment of the present disclosure and associated control module 5 is schematically shown. Engine 10 is selectively operable in a variety of combustion modes, including a controlled auto-ignition combustion mode, a homogeneous spark-ignition combustion mode, and a stratified spark-ignition combustion mode. Engine 10 is selectively operated at a stoichiometric air / fuel ratio and at a stoichiometric predominantly lean air / fuel ratio. The present disclosure can be applied to various internal combustion engine systems and combustion cycles.

[0070] In one embodiment, engine 10 may be connected to a transmission arrangement (not shown) for transmitting tractive power to a powertrain (not shown) of a motor vehicle. The transmission, which...

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

A spark-ignition direct-injection internal combustion engine is controlled at low loads through split fuel injections and spark discharges including one injection and spark during a negative valve overlap period and another injection and spark during a compression phase of the engine cycle.

Description

technical field [0001] The present disclosure relates to the operation and control of homogeneous compression ignition (HCCI) engines. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] Known spark ignition (SI) engines introduce an air / fuel mixture into each cylinder, which is compressed during the compression stroke and ignited by a spark plug. Known compression ignition engines inject pressurized fuel into the combustion cylinder near top dead center (TDC) of the compression stroke, which ignites after injection. Combustion for both gasoline and diesel engines involves a premixed or diffusion flame controlled by fluid mechanics. [0004] SI engines are capable of operating in a number of different combustion modes, including homogeneous SI combustion mode and stratified SI combustion mode. SI engines can be set to operate in a combustion mode of ...

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 Applications(China)
IPC IPC(8): F02D13/02F02D41/34F02D41/40F02P5/04F01N9/00F02B23/10
CPCY02T10/44F02D13/0265F02D41/402F02D41/3041F02D41/1462F02P15/08Y02T10/46F02D2250/36F02P5/1508Y02T10/40
Inventor N·维尔穆思P·M·纳特H·允
Owner GM GLOBAL TECH OPERATIONS LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com