The HEUI fuel injection system (Hydraulic Electronic Unit Injector) is a medium-pressure common rail, electronically controlled hydraulic injection system developed by C-aterpillar. It uses engine oil as the hydraulic medium, combined with electronic control and hydraulic drive to achieve high-pressure fuel injection.
The most widely used HEUI injectors include CAT C7, C9, C-9, C3126, 3412E,3412A,ISUZU,NAVISTAR and FORD G2.8/G2.9.
To test HEUI injector, must need a HEUI Fuel Injection Test Bench.