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Method for filtering and correcting for oscillations in abundance signals from detectors

A correction method and detector technology, applied in machine/engine, fuel injection control, engine control, etc., can solve problems not involving abundance signal filtering and correction, and achieve pollution elimination, performance optimization, and abundance oscillation elimination Effect

Active Publication Date: 2019-12-17
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0023] However, this document is not concerned with filtering and correcting the abundance signal measured at the detector during at least one operating condition of the engine that produces oscillations in the abundance signal

Method used

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  • Method for filtering and correcting for oscillations in abundance signals from detectors
  • Method for filtering and correcting for oscillations in abundance signals from detectors
  • Method for filtering and correcting for oscillations in abundance signals from detectors

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Embodiment Construction

[0047] It should be noted that the drawings are given as examples and not as limitations of the invention. The drawings form schematic diagrams to facilitate understanding of the invention and are not necessarily to scale of actual application. Particularly, figure 1 Dimensions shown for various elements do not represent reality.

[0048] With reference to all drawings and especially figure 1 , figure 2 and Figure 4 , the invention relates to a method for filtering and correcting the signal of the measured abundance Mes sond sam during at least one operating condition of the engine which causes the measured abundance signal Mes sond sam to oscillate and during changes in the detector model Degree Mes sond sam from detector.

[0049] The abundance of the air / fuel mixture in the engine 1 is adjusted according to the abundance setpoint Consrich sond at the upstream probe 4a and the measured abundance Mes sond sam determined by the upstream probe 4a, which is corrected by t...

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Abstract

The invention relates to a filtering and correction method for filtering and correcting during at least one operating condition of an engine which causes oscillations in the abundance signal (Mes sond sam) measured by a detector and during a change of the detector model Correction of this abundance signal (Mes sond sam), the so-called upstream probe, is carried out on the engine with a predetermined abundance setpoint at the engine (Consrich sond) to identify operating conditions during pre-testing related to adjustments. As soon as the at least one value is detected at a given moment of engine operation, the first filtering is discontinued and replaced by a second filtering for filtering the measured abundance (Mes sond sam). Then, at least one parameter (ttrans, treps) of the detector is calibrated.

Description

technical field [0001] The invention relates to a method for filtering and correcting an abundance signal from a detector during at least one operating condition of the engine causing the abundance signal to oscillate, and a model change of the detector. This detector is a detector arranged in the exhaust line at the outlet of the heat engine and is called an upstream detector since it is usually arranged upstream of the catalytic converter. Background technique [0002] The adjustment of the abundance of the air / fuel mixture in the engine is performed based on the abundance setpoint at the upstream probe, which is in the engine The detector model is corrected based on the predetermined abundance set point and at least one operating parameter of the detector. [0003] Preferably, the invention is applicable to engines having gasoline fuel controlled ignition and supercharging. Gasoline designations include blends based on gasoline, ethanol, or liquefied petroleum gas. Thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/14F02D41/24
CPCF02D41/1401F02D41/1439F02D41/1441F02D41/1454F02D41/1456F02D41/1486F02D41/2432F02D2041/1431F02D2041/1432F02D2041/1433F02D2200/0411F02D2200/101
Inventor 西里尔·塔维罗德弗雷德里克·丹布里卡特格雷戈勒·加尼叶
Owner PEZHO SITROEN AUTOMOBILS SA
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