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Method for determining a remaining useful life of an air filter

An air filter and filter technology, applied in the direction of fuel air filter, electrical control, machine/engine, etc.

Active Publication Date: 2013-11-06
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the miles driven of these vehicles may not be an acceptable means of predicting the condition of their air filters

Method used

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  • Method for determining a remaining useful life of an air filter
  • Method for determining a remaining useful life of an air filter
  • Method for determining a remaining useful life of an air filter

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Embodiment Construction

[0055] The following detailed description is merely exemplary in nature and is not intended to limit the application and uses of the invention. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description.

[0056] An improved method for determining when to replace a vehicle air filter is disclosed herein. The improved method includes taking air pressure measurements in an air cleaner assembly having an air filter, obtaining data relating to the pressure differential observed in a new air filter and an end-of-life air filter, and using the measured The pressure and pressure difference data are used to calculate the remaining service life of the air filter.

[0057] The method includes taking at least two measurements of air pressure in the air cleaner assembly at a location downstream of the air filter (i.e., taking air pressure measurements at a lo...

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Abstract

A method is provided herein for determining a remaining useful life of an air filter. The method includes, but is not limited to, measuring a first airflow rate and a first air pressure (P1) in an air cleaner assembly downstream of the air filter, wherein P1 corresponds to the first airflow rate. The method further includes measuring a second airflow rate and a second air pressure (P2) in the air cleaner assembly downstream of the air filter, wherein P2 corresponds to the second airflow rate. The method further includes obtaining pressure differentials A1, A2, B1, and B2 from a data storage device. The method also includes calculating with a processor a result indicative of a useful life remaining for the air filter by taking into account P1, P2, A1, A2, B1, and B2. The method also includes reporting the result to a user.

Description

technical field [0001] The present invention relates generally to filters, and more particularly to air filters. Background technique [0002] Air filters, such as those used in air cleaner assemblies that remove particulate matter from the air stream before it is introduced into the combustion chamber of a vehicle's internal combustion engine, periodically become clogged and need to be replaced . Historically, such air filters have been monitored indirectly to determine when they should be replaced. For example, the number of miles a vehicle has driven since the last air filter change is often used as a means of determining when to change a vehicle's air filter. The miles driven are used as the basis for making this determination, which relies on a correlation between the vehicle's miles driven and the rate at which the vehicle's air filter becomes clogged with particulate matter. [0003] While this method of determining when to replace a vehicle's air filter is adequat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M35/02
CPCF02M35/02F02D41/18F02D41/22
Inventor J·K·穆尔T·W·奥斯坦L·李J·L·贝姆P·J·费凯尼T·J·莫克里奇D·P·斯滕森S·J·麦科米克
Owner GM GLOBAL TECH OPERATIONS LLC