does any data exist (tests, reviews) about the claims that air filters - filter better when loaded up?
test data on air filters?
- Thread starter edwardh1
- Start date
- Status
A little old but it's the best test I know of.
http://www.nicoclub.com/archives/kn-vs-oem-filter.html
http://www.nicoclub.com/archives/kn-vs-oem-filter.html
Do a search on SAE, plenty of data in their library.
If you are serious, look back to the previous air filter posting (Who is changing their air filter every oil change) which you asked the same question. Heavy duty filter manufacturers tell the truth. Light duty manufacturers advertise to sell filters.
A quote taken directly from the conclusions of SAE paper #952557 "Total Filtration: The influence of Filter Selection on Engine Wear, Emissions, and Performance" by Marty Barris of Donaldson Company.
"Too Frequent air filter change intervals can double engine wear rate, especially if changed within the first 30% of the filter's life."
"Too Frequent air filter change intervals can double engine wear rate, especially if changed within the first 30% of the filter's life."
Originally Posted By: compratio10_5
A quote taken directly from the conclusions of SAE paper #952557 "Total Filtration: The influence of Filter Selection on Engine Wear, Emissions, and Performance" by Marty Barris of Donaldson Company.
"Too Frequent air filter change intervals can double engine wear rate, especially if changed within the first 30% of the filter's life."
but is that due to trash trapped araound the old filter in the housing?
A quote taken directly from the conclusions of SAE paper #952557 "Total Filtration: The influence of Filter Selection on Engine Wear, Emissions, and Performance" by Marty Barris of Donaldson Company.
"Too Frequent air filter change intervals can double engine wear rate, especially if changed within the first 30% of the filter's life."
but is that due to trash trapped araound the old filter in the housing?
Vacuuming out the filter housing and wiping all sealing surfaces with a damp cloth is good practice when changing or checking filter condition but these numerous studies by the filter manufacturers and the engine manufacturers all agree that surface filtration air cleaner efficiency improves with use (precoating) as long as the differential pressure is within design limits and the seals are tight.
See another quote from SERVICE LIFE EXPECTATIONS OF EAC & AIF (Engine air cleaners & Air Induction Filters) SAE #2000-01-3317 by Neville Bugli of Visteon Corp.
Understanding service life requirements is crucial for
optimum engine protection. Estimating the EAC service life
for a certain engine or vehicle can be complex. EAC need to
be serviced after they have surpassed an allowable
restriction rise due to contaminant loading. Further, the
point at which the EAC are serviced affects their filtration
performance and overall vehicle performance. EAC having
high or excessive restriction values can significantly
degrade overall engine performance. It has been well
demonstrated that the filtration efficiency of the AIF
improves with contaminant loading [1,2,4,5,8,9]. With the
increase in efficiency, the rate of engine wear significantly
decreases [4]. Servicing the AIF at the recommended
(design intent) restriction rise or pressure drop, allows the
filter to achieve its highest efficiency thus provides
maximum engine protection. Frequently servicing the EAC,
especially within the first 30% of its service life can
significantly increase engine wear [4,7]. Generally, the EAC
are over-serviced by the end customer. As a result the
customer never utilizes the full value of the EAC/AIF as it
never achieves its highest efficiency levels, thus reducing
overall engine protection by increasing the rate of engine
wear [3,4,7,9] . Also, the customer is throwing away a
perfectly good filter which increases the cost of vehicle
ownership.
See another quote from SERVICE LIFE EXPECTATIONS OF EAC & AIF (Engine air cleaners & Air Induction Filters) SAE #2000-01-3317 by Neville Bugli of Visteon Corp.
Understanding service life requirements is crucial for
optimum engine protection. Estimating the EAC service life
for a certain engine or vehicle can be complex. EAC need to
be serviced after they have surpassed an allowable
restriction rise due to contaminant loading. Further, the
point at which the EAC are serviced affects their filtration
performance and overall vehicle performance. EAC having
high or excessive restriction values can significantly
degrade overall engine performance. It has been well
demonstrated that the filtration efficiency of the AIF
improves with contaminant loading [1,2,4,5,8,9]. With the
increase in efficiency, the rate of engine wear significantly
decreases [4]. Servicing the AIF at the recommended
(design intent) restriction rise or pressure drop, allows the
filter to achieve its highest efficiency thus provides
maximum engine protection. Frequently servicing the EAC,
especially within the first 30% of its service life can
significantly increase engine wear [4,7]. Generally, the EAC
are over-serviced by the end customer. As a result the
customer never utilizes the full value of the EAC/AIF as it
never achieves its highest efficiency levels, thus reducing
overall engine protection by increasing the rate of engine
wear [3,4,7,9] . Also, the customer is throwing away a
perfectly good filter which increases the cost of vehicle
ownership.
Originally Posted By: Olas
Do a search on SAE, plenty of data in their library.
they charge for access I think
Do a search on SAE, plenty of data in their library.
they charge for access I think
Originally Posted By: compratio10_5
Vacuuming out the filter housing and wiping all sealing surfaces with a damp cloth is good practice when changing or checking filter condition but these numerous studies by the filter manufacturers and the engine manufacturers all agree that surface filtration air cleaner efficiency improves with use (precoating) as long as the differential pressure is within design limits and the seals are tight.
See another quote from SERVICE LIFE EXPECTATIONS OF EAC & AIF (Engine air cleaners & Air Induction Filters) SAE #2000-01-3317 by Neville Bugli of Visteon Corp.
Understanding service life requirements is crucial for
optimum engine protection. Estimating the EAC service life
for a certain engine or vehicle can be complex. EAC need to
be serviced after they have surpassed an allowable
restriction rise due to contaminant loading. Further, the
point at which the EAC are serviced affects their filtration
performance and overall vehicle performance. EAC having
high or excessive restriction values can significantly
degrade overall engine performance. It has been well
demonstrated that the filtration efficiency of the AIF
improves with contaminant loading [1,2,4,5,8,9]. With the
increase in efficiency, the rate of engine wear significantly
decreases [4]. Servicing the AIF at the recommended
(design intent) restriction rise or pressure drop, allows the
filter to achieve its highest efficiency thus provides
maximum engine protection. Frequently servicing the EAC,
especially within the first 30% of its service life can
significantly increase engine wear [4,7]. Generally, the EAC
are over-serviced by the end customer. As a result the
customer never utilizes the full value of the EAC/AIF as it
never achieves its highest efficiency levels, thus reducing
overall engine protection by increasing the rate of engine
wear [3,4,7,9] . Also, the customer is throwing away a
perfectly good filter which increases the cost of vehicle
ownership.
Thanks, thats what I was after
Vacuuming out the filter housing and wiping all sealing surfaces with a damp cloth is good practice when changing or checking filter condition but these numerous studies by the filter manufacturers and the engine manufacturers all agree that surface filtration air cleaner efficiency improves with use (precoating) as long as the differential pressure is within design limits and the seals are tight.
See another quote from SERVICE LIFE EXPECTATIONS OF EAC & AIF (Engine air cleaners & Air Induction Filters) SAE #2000-01-3317 by Neville Bugli of Visteon Corp.
Understanding service life requirements is crucial for
optimum engine protection. Estimating the EAC service life
for a certain engine or vehicle can be complex. EAC need to
be serviced after they have surpassed an allowable
restriction rise due to contaminant loading. Further, the
point at which the EAC are serviced affects their filtration
performance and overall vehicle performance. EAC having
high or excessive restriction values can significantly
degrade overall engine performance. It has been well
demonstrated that the filtration efficiency of the AIF
improves with contaminant loading [1,2,4,5,8,9]. With the
increase in efficiency, the rate of engine wear significantly
decreases [4]. Servicing the AIF at the recommended
(design intent) restriction rise or pressure drop, allows the
filter to achieve its highest efficiency thus provides
maximum engine protection. Frequently servicing the EAC,
especially within the first 30% of its service life can
significantly increase engine wear [4,7]. Generally, the EAC
are over-serviced by the end customer. As a result the
customer never utilizes the full value of the EAC/AIF as it
never achieves its highest efficiency levels, thus reducing
overall engine protection by increasing the rate of engine
wear [3,4,7,9] . Also, the customer is throwing away a
perfectly good filter which increases the cost of vehicle
ownership.
Thanks, thats what I was after
- Status
