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1.Test bench model: BC-NJ
2.The main function of the test bench: mainly used for endurance test of electronically controlled fuel injector assembly on the production line
3.Test bench main test parameters
3.1.Test bench common rail pump drive power: 11kW
3.2.Number of wear-in injectors: 8
3.3.Pump end maximum oil supply pressure:300MPa
3.4.Test bench fuel tank temperature range:40~50℃
3.5.Cooling method: forced cooling refrigeration unit
3.6.Medium used for testing: ISO4113 standard pump oil or JB-1 standard pump oil
4.The main components of the test bench: the frame part, the main drive system, the fuel supply system, the fuel cooling system, the electronically controlled injector drive system, the control system, and the quick installation.
4.1. Rack section
4.1.1.The test stand frame is mainly formed by sheet metal welding, and the operation space is a closed cover.
4.1.2.Install a fluorescent lighting system in the operating space and add a protective cover
4.2.Main drive system
4.2.1 The test bench oil source is generated by a motor driven Bosch common rail pump.
4.2.2 The motor is connected to the common rail pump with a durable coupling and a safety enclosure
4.2.3 The main drive motor parameters of the test bench are:4Ph-380V-50Hz-11KW,Motor speed range is 40~1450r/min
4.2.4 The inverter power matches the inverter motor
4.3 Fuel oil supply system
4.3.1 The fuel tank has a volume of about 60 liters.
4.3.2 Common rail pump oil supply mode is self-priming
4.3.3 Fuel filtration is divided into two levels
4.3.3.1 Install 200 mesh coarse filter in the fuel tank
4.3.3.2 Add a high-precision filter between the fuel tank and the common rail pump inlet with a filtration accuracy of 5um and a standard filter
4.3.4 Injector injection durable oil return adopts closed oil return, and the open filter is installed in the oil return pipeline for filtration. After running, the medium is filtered and then flows back to the fuel tank.
4.3.5. Pressure measurement method and range of oil supply pipeline
4.3.6. Fuel temperature control section
4.3.6.1. Fuel temperature control range is: 40~50°C
4.4. Fuel Cooling System
4.4.1. Cooling uses a refrigeration unit.
4.5. Rail pressure measurement system
4.5.1. The rail pressure measurement uses a high pressure sensor with a range of 0 to 350 MPa and an accuracy level of 0.5%.
4.5.2. The rail pressure sensor is installed on the self-made common rail
4.6. Electronically controlled injector drive system
4.6.1. The number of drive systems for electronically controlled injectors is eight.
4.6.2. Drivers are provided to Party B
4.6.3. Injector low pressure oil circuit and cable are manually installed
4.7. Control system
4.7.1. Test bed control system can calculate the main motor speed according to the fuel injection set value
4.7.2. Test bed control system can set parameters such as rail pressure and waiting time
4.8. Equipment installation environment temperature: 5 ~ 35 ° C
4.9. Relative humidity of the environment: 20~90% RH, no condensation
4.10. Power supply requirements: AC 3P-50Hz-380V±10%, the wiring method is three-phase five-wire system, and the grounding wire is required to be good.
5. Design and production compliance specifications and standards
5.1.GB/T 14096-1993 Fuel injection pump test bench Test method
5.2.JB/T 9734-1999 Fuel injection pump test bench Technical conditions
5.3.GB/T 8029-1987 Diesel engine fuel injection pump
5.4.GB 5226.1-2005 Mechanical and electrical safety Mechanical and electrical equipment Part 1: General technical conditions
