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Method and system for evaluating emissions test equipment by simulating various engine operating conditions

An engine and emissions technology used in the field of simulating various engine operating conditions to evaluate emissions testing equipment and systems

Active Publication Date: 2016-05-18
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These systems and methods do not evaluate emissions testing devices under real-world conditions, and therefore do not evaluate emissions testing devices as accurately as desired

Method used

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  • Method and system for evaluating emissions test equipment by simulating various engine operating conditions
  • Method and system for evaluating emissions test equipment by simulating various engine operating conditions
  • Method and system for evaluating emissions test equipment by simulating various engine operating conditions

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Embodiment Construction

[0039] The following description is merely exemplary in nature and is in no way intended to limit the disclosure, its application, or uses. For purposes of clarity, the same reference numbers will be used in the drawings to identify similar elements. As used herein, the phrase at least one of A, B, and C should be construed as 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 disclosure.

[0040] As used herein, the term module may refer to, be part of, or include the following: application specific integrated circuits (ASICs), electronic circuits, combinational logic circuits, field programmable gate arrays (FPGAs), A processor (shared, dedicated, or grouped) executing the code, another suitable component providing the described functionality, or a combination of some or all of the above, such as a system on a chip. The term module may...

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PUM

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Abstract

The present invention relates to methods and systems for simulating various engine operating conditions to evaluate emissions testing equipment. A system in accordance with the principles of the present disclosure includes an engine control module, a valve control module, and a level determination module. The engine control module controls an engine mounted in one of an engine dynamometer and a chassis dynamometer based on a predetermined sequence of specified desired speeds relative to time. A valve control module controls a valve to inject a first amount of material into the exhaust system to simulate the engine output emissions. The level determination module determines an emissions level of the emissions within the exhaust system based on the predetermined timing and the first amount.

Description

technical field [0001] The present disclosure relates to methods and systems for simulating various engine operating conditions to evaluate engine emissions test equipment. Background technique [0002] The background art provided here is for the purpose of generally presenting the context of the disclosure. The work of the presently named inventors described in the Background of the Invention section and aspects of this specification as of the date of filing are not otherwise considered prior art as at the time of filing, and are neither expressly nor implicitly deemed contrary to this disclosure. current technology. [0003] Emissions testing equipment measures the level of emissions within the exhaust gas output by the engine. Emissions testing equipment may be used to ensure that vehicles comply with emissions standards. Emissions standards regulate the amount of emissions that a vehicle will produce. Emissions levels measured by emissions testing equipment must be a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/10G01N33/00
CPCG01M15/02
Inventor D.B.奈吉
Owner GM GLOBAL TECH OPERATIONS LLC