Tenders Are Invited For Test Benches – Loading And Automation System For An Engine Test Bench

Test Benches – Loading And Automation System For An Engine Test Bench. Preliminary Remark The Engine Test Bench Will Be Set Up In The Laboratory Hall Of The Faculty Of Automotive Engineering. In The Test Room There Is An Air-Suspended Foundation 4000 Mm X 1900 Mm With A Groove Spacing Of 200 Mm On Which The Test Stand Is To Be Mounted. Ventilation Systems, Central Fuel Supply And Connections To The Central Cooling System Are Available. The Connections For The Media Supply Are Located On The Foundation. Control Panel And Control Cabinet Must Be Provided In The Control Room. The Control Cabinet For Connection To The Laboratory Halls Power Grid Must Be Installed In An Electrical Operating Room. The Test Room And The Electrical Operating Room Are Approximately 20 M Apart. All Of The Following Devices Are To Be Delivered Exclusively As New Devices. Pos. 1 Loading Device With The Following Minimum Requirements: Nominal Torque? 600 Nm To At Least 3750 Rpm Nominal Speed 4,000 Rpm +/- 10% Nominal Power (S1 Operation According To Iec 60034-1) ? 250 Kw Maximum Speed 10,000 Rpm +/- 10% Power Loss Nominal < 10.4 Kw Nominal Current 350 A +/- 10% Power Motor Operation? 90% Of The Regenerative Power Overload Capacity (60 S Every 10 Minutes)? 20% Mass Moment Of Inertia < 0.350 Kgm² Acceleration Capacity > 20,700 Rpm Machine Noise At Nominal Speed < 85 Db (A) Calculated Bearing Service Life L10h ? 30,000 Hours Protection Class Min. Ip23 Ambient Conditions Temperature + 5 °C To + 40 °C Total Weight < 1100 Kg Maximum Dimensions Length: 1.10 M Width: 0.90 M Height: 1.30 M 1.1. Four-Quadrant Operation 1.2. Overload Protection 1.3. Rotary Encoder For Speed Measurement 1.4. Suitable Inverters According To Din En 61800-3 Category C3 Standardized In A Separate Control Cabinet 1.5. Intermediate Frame For The Loading Device With An Axis Height Of The Loading Device 700 Mm To The Foundation Surface 1.6. Ready-To-Use Assembly On The Foundation 1.7. Required Control Cabinets And Controls 1.8. Required Connection, Control And Signal Cables Between The Inverter And The Control Cabinet (Approx. 25M Separated From Each Other) Pos. 2 Torque Measurement With The Following Minimum Requirements: 2.1. Locking Device For Torque Calibration 2.2. Test Lever For Calibrating The Torque Measuring System 2.3. Torque Measuring Flange With The Following Requirements: Accuracy Class? 0.05 Nominal Torque Mnom 1 Knm Nominal Speed > 11,000 Rpm Nominal Characteristic Value (Span Between Torque = Zero And Nominal Torque): Frequency Output Voltage Output 30 Khz 10 V Characteristic Value Tolerance (Deviation Of The Actual Output Variable At Mnom From The Nominal Characteristic Value) Frequency Output And Voltage Output +/- 0.1% Linearity Deviation Including Hysteresis, Based On The Nominal Characteristic Value: Frequency Output And Voltage Output, For A Maximum Torque In The Range: 0% Mnom To 20% Mnom >20% Mnom To 60% Mnom >60% Mnom To 100% Mnom < +/- 0.01% < +/- 0.02% < +/- 0.03% Temperature Influence Per 10K In The Nominal Temperature Range On The Output Signal, Based On The Actual Value Of The Signal Span