2018年4月9日 · It’s called HEUI and it stands for hydraulically activated electronically controlled unit injector. An interesting yet complicated injection system that functions by using pressurized engine oil to fire its fuel injectors, HEUI is the perpetual underdog in diesel performance.

2013年4月1日 · We’ll answer both of these questions, as well as detail the injector firing process in an HEUI injector. We’ll also offer some insight as to why the 7.3L’s HEUI system was so reliable in ...

2020年11月24日 · The HEUI uses engine lubrication oil that is pressurized from 6 MPa (870 psi) to 28 MPa (4050 psi) in order to pump fuel from the injector. The HEUI operates in the same way as a hydraulic cylinder in order to multiply the force of the high pressure oil.

HEUI Fuel Injectors. The hydraulically actuated electronic unit injector was technology developed by Caterpillar in the early 1990's. The most popular application of this technology was arguably the 7.3L and 6.0L Power Stroke diesel engines designed by International Navistar and used heavily in Ford 3/4 and 1 ton pickups.

2017年3月1日 · HEUI systems were the first modern injection system that could pressurize fuel independently from engine RPM. HEUI applications included the 7.3L and 6.0L Powerstroke used between 1993.5 and 2007 by Ford.

Caterpillar Inc. has developed a new diesel engine fuel system, powered by hydraulics and controlled electronically. This Hydraulic Electronic Unit Injector, (HEUI), requires no mechanical actuating or mechanical control devices, and offers many advantages over conventional fuel injection systems.In

Cat Reman C7 HEUI fuel system kit includes 6 Cat Reman fuel injectors plus Cat Reman HEUI pump, Injection Actuation Pressure (IAP) sensor, harness, hold-down bolts, seals, and O-rings.

2022年3月8日 · The acronym HEUI refers to the hydraulically activated, electronically controlled, unit injector (HEUI) fuel system found on the 7.3L and 6.0L Powerstroke engines used in Ford diesel trucks. This system was created by Caterpillar and Navistar in 1993.

The HEUI injector functions as an atomizer by pumping high pressure fuel through orifice holes in the unit injector tip. The HEUI injector delivers the correct amount of atomized fuel into the combustion chamber and the HEUI injector disperses the atomized fuel evenly throughout the combustion chamber.

This paper describes the Caterpillar HEUI Fuel System, its operating features, performance advantages, and application to diesel engines. System performance is compared to conventional mechanical and electronic unit injected fuel systems. HEUI characteristics are also compared to future fuel system requirements of the diesel engine as determined