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

Method for determining error of the oil ejecting execution element ejection quantity

A technology of control device and injection quantity, applied in the direction of fuel injection control, electrical control, engine control, etc., can solve problems such as the influence of exhaust gas quality engine noise, and achieve the effect of preventing unwanted disappearance, reliable and accurate compensation

Active Publication Date: 2008-03-26
ROBERT BOSCH GMBH
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Small changes in the amount of pre-injection actually injected can have serious effects on exhaust gas quality and engine noise

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 determining error of the oil ejecting execution element ejection quantity
  • Method for determining error of the oil ejecting execution element ejection quantity
  • Method for determining error of the oil ejecting execution element ejection quantity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] FIG. 1 shows in detail an internal combustion engine 10 with a fuel injection system 12 , an angle sensor 14 , a control unit 16 and a driver desire sensor 18 . Fuel injection system 12 has at least one fuel injection actuator 20 . Injection actuator 20 is designed as an injector with which fuel is individually metered into a combustion chamber of internal combustion engine 10 . The internal combustion engine 10 is preferably a diesel engine, but the invention is not limited to diesel engines, but gasoline engines and Wankel engines can also be used.

[0020] Driver desire sensor 18 is used to detect the torque request of internal combustion engine 10 . If the internal combustion engine 10 is used as a motor for a road vehicle, the torque request is given by the driver. As an alternative or in addition, however, the torque request can also be predetermined by a function of the vehicle which is carried out in the control unit 16 or in another control unit of the vehicl...

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 a method for determining the deviation (F) of practical injection amount and preconcerted reference amount of a fuel injection system (12) of an internal combustion engine (10) with at least a controllable oil spraying executing element (20), in this method, different combustion courses have different oil injection modes, each combustion course injecting a certain work point needed practical injection amount (QLL) into the internal combustion engine (10); the deviation (F) is determined by comparing the reference amount formed from a first oil spraying mode with the reference amount formed by a second oil spraying mode. The characteristic of this method is, the first oil spraying mode (35) has x single oil spray, the second oil spraying mode (37) has y single oil spray, wherein x and y are separately more than 1, and x is not equal to y. Furthermore, the present invention relates to a controlling device, the controlling device is set for applying this method.

Description

technical field [0001] The invention relates to a method according to the preamble of claim 1 and to a control device according to the preamble of the independent device-related claim. Such a method and a control device are known from DE 10 343 759 A1. Background technique [0002] In order to achieve the best noise characteristics and exhaust gas characteristics of internal combustion engines, modern internal combustion engines place high demands on the accuracy of fuel injection timing and injection quantity. When triggering an injection actuator such as a fuel injector, manufacturing-related and aging-related tolerances can lead to deviations in the actually injected injection quantity from the injection quantity calculated by the control unit of the internal combustion engine. Such deviations can lead to deterioration of the noise characteristics, causing noise problems, unstable operation and unacceptable power dissipation. [0003] In order to determine this deviatio...

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): F02D41/24
CPCF02D41/40Y02T10/44F02D41/2438F02D41/247Y02T10/40
Inventor T·丁格勒S·农南马彻
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