Model 4222 Brake Emissions Particle Measuring System

Product Overview

LINK’s Model 4222 Brake Emissions Particle Measuring System is designed to accurately measure and report particle mass (PM10 and PM2.5) and particle number (Solid and Total). The Model 4222 system enables the operator to automate filter changing (via filter tracking with an RFID) and have the system provide real-time monitoring and operation. Additional instruments can measure particle size distribution and real-time mass measurement.

LINK’s design meets the GRPE-87-40 testing procedure and can support future R&D to understand better the factors influencing your emissions. Integrating the Model 4222 system builds on our expertise in integrating measurement systems as part of standard dynamometer systems (e.g., noise and vibration analyzers, thermal imaging, capacitive sensors, and specialized torque measurement systems).

    Key Features

The LINK Model 4222 Brake Emissions Particle Measuring System Provides:

  • Self-contained, pre-calibrated, and fully integrated with our ProLINK controls and data acquisition systems
  • The seamless testing process, from background checks to automated PM filter changes (to avoid downtime between cycles or during off-shift testing), to real-time monitoring and quality controls
  • Ease of transport and connection (or disconnection for non-permanent installations) to the dyno controls and the sampling train—simplifying calibration and maintenance
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    Type of TestTest HighlightsEquipment UsedExample Procedures
    Chemical TestingMeasurement of copper, asbestos and other elements in brake friction materialsICP-OES / PLMJ2975
    Materials TestingPhysical properties including quality control for friction, wear, compressive strain, shear strength, corrosion resistance, swell and growthChase Machine / Compressibility Machine/ Shear Machine / Corrosion Chamber / Environmental Chamber / OvenJ661, ISO 6310, ISO 6311, ISO 6312, ABNT NBR 9301, ABNT NBR 5505, ABNT NBR 5537, ASTM B117
    Frequency ResponseComponent Frequency ResponseLaser Vibrometer Test StandSAE J2933, J3001, J2598, L-4375
    Structural Fatigue and
    Breaking strength, cyclic fatigueServo Hydraulics, Torque FlexJ2995, C419, C441, GMW18022
    Caliper FingerprintingCaliper characteristics such as knockback, rollback, fluid displacement, deflection...Caliper Test Bench / Brake DynamometerL-4177, PF.90257
    Brake Drag and DTVResidual drag, disc thickness variation, brake feel and vehicle fuel mileageOff Brake Drag Stand / Brake DynamometerJ2923, GMW14926, GMW14351, PF.90257, L-13080
    PerformanceHydraulic, air and electric brakes, friction levels, stopping distance, corrosion, cleanability, brake torque variation, rotor cracking, regulation, stability control, coastdownBrake Dynamometer, Model 4000 DASJ2784, J2928 IS026867, GMW14985, PF.90210, PF.90244, L-405, FMVSS 121, FMVSS 122, FMVSS 105, FMVSS 135, FMVSS 126, FMVSS 136, ECE R13H, AMS
    WearRotor wear, drum wear, lining wear, DTV, durability, city traffic, suburban trafficBrake Dynamometer, Model 4000 DASJ2707, USCT, L-423, PF.90244, Los Angeles, Detroit, Phoenix, Birmingham, Marquette
    NVHBrake squeal during drag and decel events at different temperatures, pressure and torque levelsNVH Brake DynamometerJ2521, L420, 1430, GMW17427, PF. 90244
    Brake EmissionsBrake dust particle size, count, concentration and massBrake DynamometerWLTP, CARB, Duty cycle


    Type of TestTest HighlightsEquipment UsedExample Procedures
    Wheel BearingWater intrusion and durability when exposed to mud and saltBearing Test StandLINK Hub and Bearing, GMW16306, GMW16310
    Passenger car, sport/performance and open bed vehicle wheel bearing spallingBearing Test StandGMW16311, GMW16308, GMW16309
    Brinelling resistance validates long-term reliability/durabilityBearing Test StandGMW16305
    Rotary fatigue lifeRotary Fatigue MachineGMW16325
    Wheel HubRotary bending fatigue life characteristicsRotary Fatigue MachineGMW14249
    Hub/BearingEvaluate hub and bearing performance, durability, seals and NVH when exposed to extreme environmental effects such as temperature and mud/salt solutionBearing Test Stand/Rotary FatigueTIP-000037A, LINK Hub and Bearing, SAE J1095, LINK Impact
    Hub FatigueHub fatigue using biaxial loadingBiaxial Test StandSAE J2562


    Type of TestTest HighlightsEquipment UsedExample Procedures
    ChemicalEvaluates filiform corrosion on painted aluminum wheels and painted aluminum trimICP-OESASTM E3061
    Wheel Corrosion and CoatingsEvaluates filiform corrosion, tape adhesion, degree of rusting on painted aluminum wheels and painted aluminum trimCorrosion ChamberSAE J2635, ASTM B368, ISO 9227,
    ISO 2409, ASTM D3599,
    ABNT NBR 11003, ASTM D610,
    ASTM D1654
    Wheel FatigueLoad simulation test of aluminum alloy wheelsBiaxialBMW QV36026, SAE J2562, FORD
    L-307, GMW14340
    Dynamic Cornering Fatigue and Dynamic Radial Fatigue - Steel wheelsEccentric Mass and RadialABNT NBR 6750
    Rotational fatigue, Radial load fatigue and biaxial load fatigue of steel and aluminum wheelsEccentric Mass, Radial and BiaxialABNT NBR 6751
    Dynamic Cornering Fatigue and Dynamic Radial Fatigue and Impact resistance of temporary use and normal highway use aluminum wheelsEccentric Mass, Radial and Drop TestABNT NBR 6752
    Wheel Radial FatigueRadialGMW14909
    Wheel ImpactWheel Inboard Rim Flange Vertical ImpactDrop TestGMW15321
    Wheel radial impactDrop TestCETP 04.04-L300
    Wheel Lateral ImpactDrop TestGMW14910, SAE J175
    Wheel StiffnessFrequency Response Function (FRF)Frequency ResponseGMW14876
    Deformation of the wheelServo HydraulicsJ2315
    Center cap heat
    Center Cap deformation under elevated temperature conditionsBench TestBrake Heat Center Cap


    Type of TestTest HighlightsEquipment UsedExample Procedures
    Parking ForcesAllows proper sizing of power steering componentsForce and MotionLINK Parking Forces
    Tire FootprintDetermines the contact patch geometryForce and MotionTire Footprint
    Tire Modeling
    Determine tire inertia which is then used Ftire and other models and simulationsInertia MachineLINK Tire Inertial Properties
    On-center parking effort test for Ftire inputForce and MotionSWP
    Determine static stiffness (X, Y, Z, Alpha) for Ftire inputStatic Stiffness MachineSAE Static Stiffness
    Determine how the tire envelopes an obstacleCleat MachineJ2731
    Measure the forces and moments generated at a high frequency response spindle when the tire impacts a cleatCleat MachineJ2730
    Braking and Cornering PerformanceDetermine the straight line braking performance of a tireForce and MotionJ2673
    Determine the free rolling cornering properties of a tireForce and MotionSAE TIME, J1987, SWP
    Measure the combined cornering and braking performance of a tireForce and MotionJ2675
    Tire StiffnessMeasure rolling vertical stiffness of a tire at speedRolling Vertical Stiffness
    Rolling ResistanceMeasure tire rolling resistance using a drumForce and Motion, Rolling ResistanceJ1269, J2452
    Tire WearAssess tire wear in the labForce and MotionLINK Wear Test
    Tire NVHTest tire sizzle, cornering noise, pass-by noise, steering wheel dither, freeze crack impacts, high speed uniformity and imbalance sensitivityForce and Motion, Dynamometer, Model 4000 DASNoise, Vibration, Harshness