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System and method for engine sound calibration

An engine sound and engine technology, applied in engine testing, engine control, machine/engine, etc., can solve the problems of driver and passenger hearing discomfort, high noise level of diesel engine, etc.

Inactive Publication Date: 2008-10-29
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This in turn results in high noise levels emitted by the diesel engine which may exceed the engine noise target
Additionally, these high noise levels can exceed typical gasoline-powered engine noise levels and can be aurally uncomfortable for the driver and passengers in the vehicle

Method used

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  • System and method for engine sound calibration
  • System and method for engine sound calibration
  • System and method for engine sound calibration

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Embodiment Construction

[0025] The following description is merely exemplary in nature and is not intended to limit the disclosure, application or use.

[0026] figure 1 A system 10 is shown for establishing cylinder combustion noise of an engine 12 as a function of engine sound in accordance with the principles of the present invention. In the particular example provided, the engine 12 is a combustion diesel engine, however it should be understood that the engine 12 may take a variety of forms and that the present invention is not limited to any particular type of engine 12 . Engine 12 includes at least one combustion cylinder (not shown) for combusting fuel. The engine 12 is electronically connected to an engine controller 14 . Engine controller 14 is an electronic device having a preprogrammed digital computer or processor, control logic, memory for storing data, and at least one I / O section. The control logic includes multiple logic programs for monitoring, manipulating and generating data. T...

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PUM

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Abstract

A method for calibrating an engine is provided. The engine includes a cylinder for combustion of a fuel. The method includes setting combustion parameters of the engine, detecting a combustion noise during combustion proximate to the cylinder, detecting an engine sound radiated from the engine during combustion, adjusting the combustion parameters and repeating the steps of detecting a combustion noise and detecting an engine sound. The method further includes generating a relationship between the combustion noises and the engine sounds, determining a combustion noise level that correlates to a predefined engine sound threshold from the relationship, adjusting a speed of the engine and a load on the engine and repeating the previous steps to determine a combustion noise level for each engine speed and engine load setting, and calibrating the engine using the combustion noise levels.

Description

technical field [0001] The present disclosure relates to calibration (or calibration) of engines, and more particularly to calibrating engines to meet engine sound targets. Background technique [0002] The descriptions in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] A typical diesel engine in a car needs to be calibrated to meet emissions standards, power and torque demands, and to meet fuel economy targets. Once these goals are met, the engine needs to be calibrated to account for the sound emitted (or radiated) by the engine. However, by first calibrating for emissions, power, torque, and fuel economy targets, the engine can have high combustion pressures and high rates of pressure rise within the combustion cylinders. The pressure and rate of rise can generate dynamic forces on the structure of the diesel engine. This in turn results in high noise levels emitted by the diesel engine, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/00G01H17/00
CPCG01M15/042F02D41/2432F02D2200/025
Inventor G·J·哈泽尔顿F·G·雷顿B·D·斯托科维克K·V·塔宁S·H·埃尔塔里
Owner GM GLOBAL TECH OPERATIONS LLC