Mecelec Design has designed and built a test rig which performs a full functional test on diesel pumps for a leading truck manufacturer.
The test rig has three identical test heads. Each test head can test 1 pump at a time. The rig has two modes, fully automated and manually loaded. In automatic mode, pumps are picked from the in-feed conveyor by a 6 axis robot and placed in a test head. After the test is complete, the robot removes the pump and places it on the out-feed conveyor. In Manual mode, the pumps are loaded and unloaded through vertical doors at the front of the rig.
In the truck, the pump is situated in the cylinder block and is driven by a camshaft. The pump pressurises a common rail to 3000 bar which then feeds the injectors.
In the test rig there is a cambox which replicates the cylinder block and camshaft. There is also an actual truck fuel rail which is pressurised to 3000 bar during the test.
At the rear of the test rig there is a hydraulic bay which conditions the temperature and pressure of the diesel calibration fluid and lube oil.