Navistar HEUI injector

grabcad

The High-Energy Fuel Injector, or HEUI for short, is a proprietary fuel system developed by Navistar International Corporation. It utilizes oil pressure to inject fuel into the engine's cylinders, offering improved performance and efficiency compared to traditional mechanical fuel systems. The HEUI system consists of a high-pressure pump that generates up to 5,000 pounds per square inch (psi) of oil pressure, which is then used to drive a plunger in the injector. This design allows for precise control over fuel injection, enabling better engine performance and lower emissions. Navistar's HEUI technology has been widely adopted across their range of diesel engines, providing a significant upgrade over earlier mechanical systems.