Electronically Controlled HEUI Injector Tester for CAT C7 C9 C3126 Unit Calibration

What is HEUI fuel injection system?

The HEUI system (Hydraulic Electronic Unit Injector) is a medium-pressure common rail, electronically controlled hydraulic injection system developed by C-aterpillar in the United States. Its core feature is the use of engine oil as the hydraulic medium, combined with electronic control and hydraulic actuation to achieve high-pressure fuel injection. ‌
Technical Features
‌Hydraulic Actuation‌: Medium-pressure (approximately 20-30 MPa) engine oil drives the booster piston inside the injector, raising fuel pressure to over 200 MPa. ‌
‌Electronic Control System‌: An electronic control unit precisely regulates hydraulic pressure and injection timing for precise injection. ‌
‌Independent Injectors‌: Each cylinder is equipped with an independent hydraulically controlled electronic injector, eliminating the traditional distributor structure. ‌
Comparison with Traditional Fuel Injection Systems
Unlike traditional high-pressure common rail systems (which rely on the inherent high pressure of the fuel), HEUI uses indirect hydraulic actuation, resulting in a more complex structure but higher fuel pressure. ‌
Unlike mechanical pump-injector systems, HEUI utilizes a combination of electronic control and hydraulic actuation to improve fuel efficiency and emissions. ‌

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Products: Providing diesel test benches, diesel system repair tools, diesel system parts, etc. to customers in the diesel injection field.

----Diesel fuel testing benches: Traditional mechanical pump test bench, high-pressure common rail test bench, HEUI test bench, multi-functional diesel fuel test bench for CRDI, HEUI, Unit Injector and Unit Pump.

----Diesel system repair tools: tools for disassembling and assembling diesel injectors and diesel injection pumps, measuring tools, testing tools, etc.

----Diesel system parts: fuel injectors, fuel injection pumps; control valves, nozzles, plungers, repair kits etc.

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Services:

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----We provide equipment and tools to overseas clients to help them establish economical and reliable diesel system service labs.

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