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

Method and device for identifying and distinguishing a cause of at least one misfire of an internal combustion engine

An internal combustion engine and cause technology, applied in the direction of internal combustion piston engine, engine ignition, combustion engine, etc., can solve the problem of long deactivation phase in the detection process of combustion misfire

Pending Publication Date: 2021-09-07
VTESCO TECH GMBH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This means that the deactivation phase of the non-smooth running based combustion misfire detection process is very long

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 and device for identifying and distinguishing a cause of at least one misfire of an internal combustion engine
  • Method and device for identifying and distinguishing a cause of at least one misfire of an internal combustion engine
  • Method and device for identifying and distinguishing a cause of at least one misfire of an internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0079] figure 1 A schematic diagram of an internal combustion engine 10 having six cylinders CYL( 0 )-CYL( 5 ) is shown, where internal combustion engine 10 may be configured, for example, to propel a vehicle. Internal combustion engine 10 has a first cylinder group CYLB1 and a second cylinder group CYLB2 arranged in parallel to each other. Cylinders CYL(0), CYL(2), CYL(4) are arranged in the first cylinder group CYLB1, and cylinders CYL(1), CYL(3), CYL(5) are arranged in the second cylinder group CYLB2. The internal combustion engine 10 also has an intake duct 11 configured to supply air to the internal combustion engine 10 . In this regard, the intake passage 11 has a throttle valve 16 configured to control the air supply. Furthermore, the internal combustion engine 10 has a fuel supply device 12 which is configured to supply the internal combustion engine 10 with fuel. Internal combustion engine 10 additionally has exhaust ducts 13A, 13B which are arranged immediately do...

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 disclosure relates to a method for identifying and distinguishing a cause of at least one misfire (V) of an internal combustion engine (10), wherein the internal combustion engine (10) has a plurality of cylinders (CYL(0)-CYL(5)), at least one exhaust gas tract (13A, 13B) and an exhaust gas sensor (15A, 15B), which is arranged in the exhaust gas tract (13A, 13B), the method having the following steps: - detecting a measurement signal (MS_CYL) using the exhaust gas sensor (15A, 15B) over a determined first time period (delta t1), the measurement signal (MS_CYL) being characteristic of the oxygen content in the exhaust gas tract (13A, 13B), - dividing the measurement signal (MS_CYL) into measurement signal portions (MS_CYL_AB), - assigning the measurement signal portions (MS_CYL_AB) to the corresponding cylinders (CYL(0)-CYL(5)), as a result of which cylinder-selective measurement signal profiles (MS_CYL_SEL(0-5)) are created which are characteristic of the respective oxygen contents downstream of the cylinders (CYL(0)-CYL(5)) over the determined first time period (delta t1), - evaluating the cylinder-selective measurement signal profiles (MS_CYL_SEL(0-5)) to identify at least one misfire (V) of the internal combustion engine (10).

Description

technical field [0001] The invention relates to a method and a device for detecting and distinguishing the cause of a combustion misfire in an internal combustion engine having several cylinders with at least one exhaust port, wherein an exhaust gas sensor is arranged in the at least one exhaust port and measures the signal is characteristic of the oxygen content in the exhaust gas of an internal combustion engine. Background technique [0002] For example, in an internal combustion engine, a misfire occurs if the amount of fuel supplied or the ignition energy is insufficient to ignite the air / fuel mixture. For example, there may be a fault in the injection system of an internal combustion engine, for example caused by an unexpected failure of an injection valve to open. This means that there is no combustible mixture in the combustion chamber and that cylinder does not contribute to the torque output by the internal combustion engine. However, the cause of the failure may...

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): G01M15/10F02D41/00G01M15/11
CPCG01M15/11G01M15/104F02D41/1454F02D2200/1015F02D2250/14F02D41/221F02P11/06F02P17/00Y02T10/40
Inventor M·赫恩伯格F·恩佩霍夫
Owner VTESCO TECH GMBH