M+H PicoFlex en - Republic Salesftp.republicsales.com/documents/MANN-Filter/MHPicoFl… · · 2008-08-27Dust load of the main element depending on the filter type (with a dust addition

MANN+HUMMEL

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The new compact air cleanerfor your highest requirements

MANN+HUMMEL GMBH, Industrial Filters Business Unit

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MANN+HUMMELPicoFlex® Air Cleaner

IntroductionMarket trends:Less installation space due to ...

additional components in the engine compartment(e.g. air conditioning equipment, intercoolers, etc. )

new bonnet designs

transfer of air cleaner systems under the bonnet

Simultaneously there is an increased volumetric flow due to

increased engine performance

increased air requirement to fulfill the new exhaust emissionregulations

Conflict of interestauto

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IntroductionThe solution: PicoFlex®

low space requirement

compact design

long filter service life

especially easy to service

in-line air flow path allows new fitting possibilities

service switch connection integrated in housing

metal-free filter elements (fullyincinerable and environmentally friendly)

variable installation positions

easy to fit solutions for mounting on a bracket

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Flow path of a conventional two-stage filter

Filterchange

The new flow path of the PicoFlex® air cleaner.

Filter change

autoclick!

Clean air to the engine

Contaminated ambient air

Clean air to the engine

Contaminated ambient air

Flow path

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Size comparison

In comparison to a filter with a conventional design and similar service life the PicoFlex® is particularly well-suited to installation conditions where space is in short supply.

auto

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How the cyclone pre-separation works

CompacPlus®

filter elementMulti-cyclone

blockVanes create

eddying

Cyclone working principle:

Vanes cause the inflowing air to rotate (eddy)

Centrifugal forces carry dust outwards to the wall of the cyclonewhere it accumulates.

An outlet divides the flow and thepre-cleaned air is then guided to the fine filter.

Approx. 10% of the inflowing airvolume is ejected back into thesurroundings by means of scavenging.

Cle

aned

air

flo

ws

to th

e en

gine

Am

bien

t air

and

dust

is

suc

ked

in

Scavenging allows dust to return to the ambient surroundings

Pre-separation

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Pre-separation

η: efficiency of the pre-separator

Single stage air cleaner

Two stage air cleaner

PicoFlex®

Dust load of the main element depending on the filter type (with a dust addition of 1000g)

η = 0%: 1000g on the element



PicoFlex® Multi-cyclone block

A higher pre-separation efficiency results in less dust reaching the filter element and therefore the air cleaner design can be made more compact. As a result the highest possible efficiency is a prime objective.The best efficiency is achieved with parallel switching of many small cells in a so-called multi-cell or multi-cyclone block.

This design requires a constant dust discharge by means of ...

an exhaust pipe ejector a radiator fan ora separate blower

click!

Single stage air cleanerη = 0%

1000g on the element

Two stage air cleanerη = 85%

150g on the element

PicoFlex®

η = 95%50g on the elementη: efficiency of the pre-separator

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The key component of the PicoFlex® is the new CompacPlus® filter element developed by MANN+HUMMEL.

high dust capacity50% greater filter surface areacompared to a star pleated elementinline flow pathsecure axial sealmetal-free (fully incinerable)and so … environmentally friendly

Alternately closed filter channels allow an in-line guidance of the air and a large filter surface area in a small installation space.

CompacPlus® filter element

- Filter Element

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Details

Connection SS/SI Connection for service switch or indicatorintegrated in the housing

Threaded insert

Through-hole

Various possibilities for fitting to the vehicle

Safety filter element as optional extra

Robust housing in fibre-glassreinforced polyamide

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Sealing technology

Tests have shown that the axial seal is the best and most reliable solution for sealing a compact element.

This is especially true if the element is removed from the housing at the side.

The sealing action is made with the aid of compression guides in the cover during closing.

Specially formed ribs on the seal seats enable particularly good sealing characteristics.

Counteracting forceSealing force

Axial seal for the main element

Compression guides in the cover

Element frame Filter housing Clean air port Axial seal of the main element

Main element frame Compression guides in the cover

Axial seal of the main element

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Sealing technology

Radial seal of the safety filter element

Radial seal of the safety filter elementThe sealing of the secondary filter element is made with a newly developed radial seal, whereby the filter housing and the seal have an elliptical design in order to achieve the best possible sealing effect.

Even distribution of the radial sealing force with PicoFlex®

Uneven distribution of the radial sealing force with the

racetrack-design

Dic

htkr

aft

Filter housing Clean air port

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The PicoFlex® is particularly easy to service

It is not necessary to dismantle anyconnections in order to replace anelement

Element access from the sideensures easy servicing

No tools are required to exchangean element

The pre-separator is easy toremove and clean

Example of an air cleaner system with PicoFlex®

Raw air line with intake

hood

PicoFlex® air cleaner

Clean air pipe to the engine

Pipe for the dust discharge

Servicing

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ServicingStep 1Remove the cover.

Step 2Now remove the element frame together with the main element.

Step 3Remove the element from the frame and dispose according to the environmental regulations. The frame is re-used.

Step 4Now there is access to the safety element, which must also be changed regularly.

click!

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Servicing

Cyclone blockThreaded insert

ScrewAir cleaner housing The PicoFlex® pre-separator is easy to clean:

In case unfavourable application conditions do cause the pre-separator to block, it can easily be cleaned as follows:

unscrew the central locking screw

remove the cyclone block

clean cyclone block and housing with compressed air

carefully reassemble

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Permanent scavenging

Scavenging using the radiator fan

Scavenging using an exhaust ejector integrated in the silencer

Scavenging using a MANN+HUMMEL exhaust ejector fitted downstream of the silencer

Blower

Silencer with integrated ejector

Silencer

Ejector

In order to ensure a reliable and smooth function of the PicoFlex®, the pre-separator of the air cleaner must be continuously scavenged.

This removes the pre-cleaned dust from the pre-separator and avoids deposits which otherwise would lead to a considerable reduction in efficiency and service life.

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Installation positions

To ensure correct dust discharge in different installation positions, the PicoFlex® is available with three different orientations of the scavenging port.

Scavenging Scavenging Scavenging

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The PicoFlex® size 7 introduced to the market in the last quarter of 2003 with a nominal flow rate of 7m³/min is the first of the PicoFlex® series fromMANN+HUMMEL.

Further sizes for increased air volumes will follow in the near future.

New series

Documents

M+H PicoFlex en - Republic Salesftp.republicsales.com/documents/MANN-Filter/MHPicoFl… · · 2008-08-27Dust load of the main element depending on the filter type (with a dust addition