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DSP based rough road detection system

一种道路检测、不平的技术，应用在诊断系统领域，能够解决发动机控制系统不正确记录、没有点火不良事件等问题

Inactive Publication Date: 2006-12-27
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some road conditions can cause the engine control system to incorrectly register a misfire event that did not actually occur

Method used

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  • DSP based rough road detection system
  • DSP based rough road detection system
  • DSP based rough road detection system

Examples

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Embodiment Construction

[0019] The following description of the preferred embodiments is merely exemplary in nature and in no way intended to limit the invention, 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 term module refers to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (general purpose, specialized or a group) and memory, combinational logic circuit, and / or other suitable components that provide the described functionality.

[0020] refer to figure 1 , shows a vehicle 10 including an engine 12 therein. Engine 12 includes cylinders 16 with associated fuel injectors 18 and spark plugs 20 . While a single cylinder 16 is shown, it is understood that the engine 12 may include multiple cylinders 16 with associated fuel injectors 18 , spark plugs 20 , and intake and exhaust valves (not shown). For example, engine 12 may include 4, 5, 6, 8, 10, or 1...

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Abstract

A rough road detection system for a vehicle according to the present invention includes a frequency domain module, an engine misfire module, and a rough road module. The frequency domain module converts a vector signal into a frequency domain signal. The engine misfire module determines whether an engine misfires based on the frequency domain signal. The rough road detection module determines whether the vehicle is driving on a rough road based on the frequency domain signal.

Description

technical field [0001] The present invention relates to diagnostic systems, and more particularly to a system for distinguishing between rough road and engine misfire conditions. Background technique [0002] Cross References to Related Applications [0003] This application claims the benefit of US Provisional Application No. 60 / 693967, filed June 24,2005. The disclosures of the aforementioned applications are hereby incorporated by reference. [0004] Vehicles include an internal combustion engine that produces drive torque. More specifically, the engine takes in air and mixes the air with fuel to form a combustion mixture. The combustion mixture is compressed within the cylinder and combusted to drive a piston slidably disposed within the cylinder. The piston rotatably drives a crankshaft delivering drive torque to the gearbox and wheels. When an engine misfires, the cylinder's fuel mixture burns at the wrong time, and it can cause engine vibration and driveline osci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/04G01M15/11
CPCB60W2040/1392F02D2041/288B60W2550/147F02D2200/702F02D2200/1012B60W2050/021F02D41/1498G01M15/11B60W2030/206F02D41/0097F02D2200/1015F02D2041/1432B60W50/0205B60W2510/0638B60W2050/0057B60W2552/35
Inventor C·A·埃尔南德斯
Owner GM GLOBAL TECH OPERATIONS LLC
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