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

Method for precontrolling lambada regulating device

An adjustment device and pre-control technology, applied in electrical control, engine control, fuel injection control, etc., can solve problems such as delay and achieve the effect of improving driving comfort

Inactive Publication Date: 2008-07-02
ROBERT BOSCH GMBH
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This also leads to overshooting or undershooting of the control variable and the actual value of lambda over their final values ​​during regulation and reaching these values ​​only with a delay

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 precontrolling lambada regulating device
  • Method for precontrolling lambada regulating device
  • Method for precontrolling lambada regulating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] FIG. 1 shows a schematic illustration of a technical environment in which the method according to the invention can be used for the pilot control of a lambda regulator 20 . Air is supplied to the internal combustion engine 10 via an air supply system 11 and the mass of the air is determined with an air mass measuring device 12 . The air quality meter 12 can be designed as a hot film air quality meter. The exhaust gas of the internal combustion engine 10 is discharged via an exhaust duct 15, wherein a nitrogen oxide storage catalytic converter 16 is arranged downstream of the internal combustion engine 10 in the direction of flow of the exhaust gas, at the outlet of which nitrogen oxide storage catalytic converter 16 Exhaust gases are discharged via an exhaust line 17 . For controlling internal combustion engine 10 , lambda control device 20 is provided, which supplies fuel to internal combustion engine 10 via fuel metering device 13 on the one hand and the air mass mea...

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 a method for pre-controlling a lambda regulator for the fuel-air ratio for operating an internal combustion engine, wherein the internal combustion engine is connected to an air supply system and an exhaust system, and wherein the control device of the internal combustion engine has A lambda control with an injection quantity calculator for determining the injection quantity for the pilot control, a controller for adjusting the actual lambda value to the desired lambda value, and an air system regulator for regulating the actual value of the air mass flow. If such a precontrol of the lambda control is carried out, the precontrolled injection quantity and / or air mass flow setpoint value is used as a function of the current injection quantity of the system consisting of air supply system, internal combustion engine and exhaust system The correction value determined by the transfer coefficient between the nominal value, the actual value of the air mass flow rate and the actual value of lambda is corrected. This makes it possible to reach the actual lambda value faster and with less overshoot and undershoot when changing the lambda target value. In addition, it can be achieved that the pilot control is also more precise during regeneration.

Description

technical field [0001] The invention relates to a method for pre-controlling a lambda regulator for the fuel-air ratio for operating an internal combustion engine, wherein the internal combustion engine is connected to an air supply system and an exhaust system, and wherein the control device of the internal combustion engine has A lambda control with an injection quantity calculation unit for determining the injection quantity for the pilot control, a controller for adjusting the actual value of the lambda to the target value of the lambda, and an air system controller for regulating the actual value of the air mass flow. Background technique [0002] Exhaust gas aftertreatment is necessary in accordance with the legal regulations on nitrogen oxide emissions from vehicles. To absorb the nitrogen oxides that are produced, a nitrogen oxide storage catalyst can be used. However, the nitrogen oxide storage catalyst can only absorb a limited amount of nitrogen oxide and must be...

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): F02D41/14F02D41/02
CPCF02D41/027F02D41/1454
Inventor W·克伦克G·哈特曼C·弗莱克
Owner ROBERT BOSCH GMBH
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