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Fuel control system and method for more accurate response to feedback from an exhaust system

一种控制系统、燃料的技术，应用在燃料喷射控制、排气处理装置的电控、电气控制等方向，能够解决不容易适用其它技术等问题

Active Publication Date: 2015-01-28
GM GLOBAL TECH OPERATIONS LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, this extensive calibration is required for each powertrain and vehicle type and is not readily applicable to other technologies, including but not limited to variable valve timing and lift

Method used

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  • Fuel control system and method for more accurate response to feedback from an exhaust system
  • Fuel control system and method for more accurate response to feedback from an exhaust system
  • Fuel control system and method for more accurate response to feedback from an exhaust system

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Embodiment Construction

[0079] The following description is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. For purposes of clarity, the same reference numbers have been used in the drawings to identify similar elements. As used herein, the phrase at least one of A, B, and C should be understood to mean a logical (A or B or C) using a non-exclusive logical or. It should be understood that steps within a method may be executed in different order without altering the principles of the present invention.

[0080] As used herein, the term module refers to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group) and memory, a combinational logic circuit that executes one or more software or firmware programs , and / or other suitable components that provide the described functions.

[0081] A desired amount of fuel to be supplied to the engine (ie, a fuel command) may be adjusted based on feed...

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Abstract

An engine control system includes a saturation determination module, an adjustment factor generation module, and a fuel control module. The saturation determination module determines when a first exhaust gas oxygen (EGO) sensor is saturated, wherein the first EGO sensor is located upstream from a catalyst. The adjustment factor generation module generates an adjustment factor for an integral gain of a fuel control module when the first EGO sensor is saturated. The fuel control module adjusts a fuel command for an engine based on differences between expected and measured amounts of oxygen in exhaust gas produced by the engine, a proportional gain, the integral gain, and the integral gain adjustment factor.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 246,685, filed September 29, 2009. The disclosure of the aforementioned application is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to internal combustion engines, and more particularly to fuel control systems and methods for improved response to feedback from an exhaust gas oxygen (EGO) sensor in an exhaust system in the event of an equivalence air / fuel ratio (EQR) excursion . Background technique [0004] The background description provided herein is for the purpose of generally presenting the context of the disclosure. The work of the presently named inventors (to the extent described in the Background section) and aspects of this description that are not otherwise considered prior art at the time of filing are neither expressly nor implicitly admitted to be relevant to the present ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/14F01N11/00F02D41/30
CPCF02D2041/1409F02D41/1402F02D2041/1432F02D41/1454F02D41/1441F02D41/2454
Inventor J·迈尔S·W·米德拉姆-莫勒K·P·杜德克S·于尔科维奇Y·G·盖真内克
Owner GM GLOBAL TECH OPERATIONS LLC
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