TE 90 MULTI-STATION RECIPROCATING TRIBOMETER

 





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    Introduction

    The TE 90 Multi-Station Reciprocating Tribometer is a modular machine providing features drawn from a range of established test machines including the TE 77 High Frequency Friction Machine, the TE 80 Fuel Lubricity Tester and the TE 57 Pressurized Lubricity Tester.

    Single station multi-function and multi-range test machines may be able to perform a wide variety of different tests, but they can still only perform one experiment at a time. Simpler multi-station test rigs can provide a means for increasing test capacity at a substantially lower cost per test station than the single station solution. The TE 90 is a two, four, eight or twelve station reciprocating tribometer with test stations configured to meet a range of standard reciprocating test applications.

    Reciprocating Drive Assembly

    The reciprocating drive assembly incorporates a splined shaft and two eccentric cams, each driving a scotch yoke assembly. The cams are arranged 180 degrees out of phase, so that primary balancing of the reciprocating assembly is achieved. The assembly is a fixed stroke device with the stroke length dependent on the eccentricity of the cams. Cams for strokes of up to a maximum of 10 mm may be accommodated. Moving specimen carriers are attached to one or both sides of each scotch yoke.

    A single reciprocating assembly thus provides the basis for a two or four station test machine. In order to create eight, twelve or indeed higher numbers of test stations reciprocating assemblies may be attached together in series on a common splined shaft.

    Test Assemblies

    Four types of test assembly are currently available, each based on both existing tribometers and existing test standards.

    Four Station Non-instrumented Wear Head

    Atmospheric Pressure – 1 mm Stroke

    Based on: TE 80 Two Station Fuel Lubricity Wear Test Machine
    Purpose: To run tests under conditions specified in ASTM D 6079 Standard Test Method for Evaluating Lubricity of Diesel Fuels by the High-Frequency Reciprocating Rig.
    To run tests under conditions specified in ISO 12156 Assessment of Lubricity using the High Frequency Reciprocating Rig.
    To run reciprocating wear tests with point contact at moderate temperatures and light loads.
    Note: The TE 90 Fuel Lubricity Tester will run tests in accordance with the test parameters specified in ISO 12156-1 and ASTM D6079 fuel lubricity test standards and will rank fluids in the same order, but will consistently produce larger wear scars than the PCS HFRR instrument and a wider discrimination between low and high reference fuels.
    The effect is particularly marked for the low lubricity reference fluid. The bias in the results arises for two reasons, firstly from differences in the method of loading between the two instruments and secondly from the method of actuation. A full analysis of these differences is given in Guidance on Diesel Fuel Lubricity Test .

    Two Station Non-instrumented Wear Head

    Pressurized – 1 mm Stroke

    Based on: TE 57 Pressurized Lubricity Test Machine
    Purpose: To run tests under conditions specified in ASTM D 6079 Standard Test Method for Evaluating Lubricity of Diesel Fuels by the High-Frequency Reciprocating Rig (HFRR) under pressurized conditions.
    To run reciprocating wear tests with point contact at moderate temperatures and light loads under pressurized conditions.

    Two/Four Station Instrumented Test Assembly – 10 mm Stroke

    Based on: TE 77 High Frequency Friction Machine
    Purpose: To run tests under conditions specified in ASTM G 133 Standard Test Method for Linearly Reciprocating Ball on Flat Sliding Wear.
    To run test under conditions specified in ASTM G181 Standard Practice for Conducting Tests on Piston Ring and Cylinder Liner Materials under Lubricated Conditions.
    To run tests under conditions specified in Draft prEN1071-12 Methods of Test for Ceramic Coatings – Part 12 – Reciprocating Wear Test.
    To run standard reciprocating tests with point or line contact at elevated temperatures and varying loads.

    Four Station Instrumented Test Assembly – 2 mm Stroke

    Based on: TE 77 High Frequency Friction Machine
    Purpose: To run tests under conditions specified in ASTM D 5706 Standard Test Method for Determining Extreme Pressure Properties of Lubricating Grease Using a High Frequency Linear-Oscillating Test Machine
    To run test under conditions specified in ASTM D 5707 Standard Test Method for Measuring Friction and Wear Properties of Lubricating Grease Using a High Frequency Linear-Oscillating Test Machine
    To run standard reciprocating tests with point contact at elevated temperatures and varying loads.

    Load Control Options – Instrumented Machines

    MANUAL 1-2:

    One regulator and one load force transducer for master test station:

    Manual control of master test station load by precision regulator, with resulting master test station load measured by force transducer. Slave test station cylinder connected in parallel to master test station with no slave test station load measurement.

    MANUAL 2-2:

    Two regulators and two load force transducers, one per test stations:

    Manual control of both test station loads by independent precision regulators, with resulting test station loads measured by force transducers.

    SERVO 1-2:

    One servo valve and one load force transducer for master test station:

    Automatic control of master test station load by servo valve with force transducer feedback. Slave test station cylinder connected in parallel to master test station with no slave test station load measurement.

    SERVO 2-2:

    Two servo valves and two load force transducers, one per test station:

    Automatic control of both test station loads by independent servo valves, each with force transducer feedback.

    MANUAL 1/4:

    One regulator and one load force transducer for master test station:

    Manual control of master test station load by precision regulator, with resulting master test station load measured by force transducer. Slave test station cylinder connected in parallel to master test station with no slave test station load measurement.

    MANUAL 4/4:

    Four regulators and four load force transducers, one per test stations:

    Manual control of test station loads by independent precision regulators, with resulting test station loads measured by force transducers.

    SERVO 1/4:

    One servo valve and one load force transducer for master test station:

    Automatic control of master test station load by servo valve with force transducer feedback. Slave test station cylinders connected in parallel to master test station with no slave test station load measurement.

    SERVO 4/4:

    Four servo valves and four load force transducers, one per test station:

    Automatic control of test station loads by independent servo valves, each with force transducer feedback.

  • Technical Specifications

    Four Station Non-instrumented Wear Head
    Atmospheric Pressure – 1 mm Stroke
    Load: Dead Weight
    Load Measurement: Not available
    Friction Force: Not available
    Contact Potential: Not available
    Load: 2 to 10 N
    Stroke: 1 mm
    Maximum Frequency: 50 Hz
    Temperature: Ambient to 100°C
    Test Samples: 6 mm diameter ball (point contact)
    Instrumentation: Speed Indicator
    Batch Counter
    Temperature Controllers x 4
    Two Station Non-instrumented Wear Head
    Pressurized – 1 mm Stroke
    Load: Dead Weight
    Load Measurement: Not available
    Friction Force: Not available
    Contact Potential: Not available
    Pressure: 7 bar maximum
    Load: 2 N
    Stroke: 1 mm
    Maximum Frequency: 50 Hz
    Temperature: Ambient to 100°C
    Test Samples: 6 mm diameter ball (point contact)
    Instrumentation: Speed Indicator
    Batch Counter
    Temperature Controllers x 2
    Note: Pressurized fluid supply system not included.
    Two/Four Station Instrumented Assembly – 10 mm Stroke
    Number of Stations: 2 or 4
    Load: Pneumatic Cylinder
    Load Measurement: Force Transducer
    Friction Force (rms): Piezo Force Transducer (Optional)
    Contact Potential: Lunn-Furey Circuit
    Load: 25 to 500 N
    Stroke: 10 mm
    Maximum Frequency: 25 Hz
    Temperature: Ambient to 250°C
    Test Samples: 6 mm diameter ball
    4.76 mm diameter ball
    6 mm x 16 mm cylinder
    Ring on liner samples
    Instrumentation: SUPERSLIM x 1/2 (two/four station)
    Software: COMPEND 2000
    Two/Four Station Instrumented Assembly – 2 mm Stroke
    Number of Stations: 2 or 4
    Load: Pneumatic Cylinder
    Load Measurement: Force Transducer
    Friction Force (rms): Piezo Force Transducer (Optional)
    Contact Potential: Lunn-Furey Circuit
    Load: 25 to 1000 N
    Stroke: 2 mm
    Maximum Frequency: 50 Hz
    Temperature: Ambient to 250°C
    Test Samples: 10 mm diameter ball on disc
    Instrumentation: SUPERSLIM x 1/2 (two/four station)
    Software: COMPEND 2000
    Services
    Electricity: 220/240V, single phase, 50 Hz, 3 kW
    110/120 V, single phase, 60 Hz, 3 kW
    Clean, dry air: 4 cfm at 8 bar (120 psi) (instrumented assemblies only)

  • Applications

    additive screening
    boundary lubrication
    crankcase lubricants
    diesel fuel lubricity
    friction modifier
    fuel lubricity
    hydraulic fluids
    multi-station
    scuffing

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  • User List

    Launched 2011

    Shell Global Solutions USA

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