Unlock instant, AI-driven research and patent intelligence for your innovation.

Oxygen concentration-based exhaust gas recirculation flow rate compensation control method and engine system

A technology of exhaust gas recirculation and engine system, applied in the direction of electrical control, combustion engine, engine control, etc., can solve the problems of cost increase, expensive oxygen sensor, lower product competitiveness, etc., and achieve the effect of improving performance and solving additional costs

Pending Publication Date: 2020-12-25
HYUNDAI MOTOR CO LTD +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Third, the use of oxygen sensors (or oxygen sensors) is expensive, which may reduce product competitiveness due to increased cost

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
  • Oxygen concentration-based exhaust gas recirculation flow rate compensation control method and engine system
  • Oxygen concentration-based exhaust gas recirculation flow rate compensation control method and engine system
  • Oxygen concentration-based exhaust gas recirculation flow rate compensation control method and engine system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein includes motor vehicles such as passenger cars in general, including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, marine craft including various boats and ships, aircraft, etc., and including hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g., from resource fuel). As referred to herein, a hybrid vehicle is a vehicle that has two or more sources of power, eg, gasoline-powered and electric vehicles.

[0039] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will be further understood that when used in thi...

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 invention relates to an oxygen concentration-based exhaust gas recirculation flow rate compensation control method and an engine system. An oxygen concentration-based exhaust gas recirculation (EGR) flow rate compensation control method may include a model compensation mode, which, via a controller, confirms engine information acquired from an engine system, calculates an intake oxygen concentration by a model intake oxygen mass ratio through a combination of an intake oxygen mass ratio model value and a model exhaust lambda value and an indirect intake oxygen mass ratio through a combination of the intake oxygen mass ratio model value and an exhaust-side measurement lambda value, respectively, and compensates the model intake oxygen mass ratio as a model intake oxygen mass ratio compensation value applying a compensation error relative to the indirect intake oxygen mass ratio by using the model intake oxygen mass ratio as a model intake oxygen mass ratio current value.

Description

technical field [0001] The present disclosure relates to exhaust gas recirculation (EGR) flow rate control, and more particularly, to performing oxygen concentration-based EGR using exhaust-side oxygen sensor measurements without applying an oxygen sensor (or oxygen sensor) to the intake system Flow rate compensation controls the engine system, thereby improving NOx reduction effect. Background technique [0002] In general, oxygen concentration control or the like based on exhaust gas recirculation (EGR) is an example of a technique for reducing pollution control materials applied to vehicles in order to reduce NOx / CO / HC. [0003] Specifically, EGR-based oxygen concentration control is a method using an exhaust gas recirculation system in which an EGR line in which a turbocharger, an EGR valve, and an EGR cooler are installed is connected to an intake manifold so as to Some exhaust gases are mixed with incoming air for the same combustion, the combustion peak temperature i...

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): F02D41/00F02D41/14
CPCF02D41/0065F02D41/0072F02D41/0052F02D41/1454F02D41/1445F02D2041/143F02D2041/1433F02D2200/0402F02D41/1458F02D41/0077Y02T10/40F02D2041/1409F01N2560/025
Inventor 申范植
Owner HYUNDAI MOTOR CO LTD