Its called heui and it stands for hydraulically activated electronically controlled unit injector. China addon heui injector tester, find details about china heui injector. Solenoid injector heui for catc7c9 recambios inyectores. Inside the injector, hydraulic force is further amplified to give heuisthe capability to. Hydraulically actuated electronic unit injector heui systems. Read about the history of the heui injector here at hot shots secret. Access rights manager can enable it and security admins to quickly analyze user authorizations and access permissions to systems, data, and files, and help them protect their organizations from the potential risks of data loss and data breaches. Electronic unit injection heui is a unique and proven highpressure, direct injection fuel system for diesel engines.
Injector volume measuring test multiple testpoints slope, per. Because the heui is much different, a technician must use different troubleshooting methods. The caterpillar 3126 heui engine introduces a new era of the diesel engine in the bus industry using the medium duty diesel engine. Caterpillar 3116, 3126 engine complete service manual 8wl. Software, lizenz, betriebssystem, bemerkungen, homepage. This exploded view shows all the components by assemblies as follows. For more information please go to product bulletin. The study of ionization in a military, heavyduty, diesel engine. Addon heui injector tester hubei fotma machinery co.
A unit injector consists of several basic elements. A unit injector ui is a high pressure integrated direct fuel injection system for diesel engines, combining the injector nozzle and the injection pump in a single component. Information categories administration advancement aerographer automotive aviation construction diving draftsman. Images of injectors are just a support to show the solenoid with it. Caterpillar heui fuel injector nozzles parts reconditioned. Descargue como pdf, txt o lea en linea desde scribd. In a unit injector, the device is usually lubricated and cooled by the fuel itself. Heui injector exploded view 16 injector components 17 application chart 19 for more information visit us online additional cross reference 20 at or call us at 216. The basic engine takes advantage of the 3116s best features and years of experience and combines this with an electronically controlled fuel system, larger displacement, and other new features to produce the 3126.
The heart of the diesel engine is the fuel injection system. Its ridiculed and hated by diesel enthusiasts the world overbut were big fans of it. Advanced technology yields higher performance the heui hydraulically actuated electronically controlled unit injector fuel system represents one of the most significant. I have a 3126 with injector actuator pressure erratic. We specialize in remanufacturing heui injectors and their components for companies that remanufacture their own injectors. Apr 05, 2016 this feature is not available right now. Advanced technology yields higher performance the heui hydraulically actuated electronically controlled unit. The springloaded plunger and barrel assembly to pressurize fuel inside the injector. Heui uses engine oil pressure to power highpressure fuel injection, where usual method of unit injector operation is the engine camshaft. Unlike a conventional fuel system, where fuel injection pressures increase proportionally with engine speed, the heui system works with the ecm to electronically control injection independent of engine speed. Adobe pdf reader free foxit pdf reader free my account.
Heui fuel systems the revolutionary heui injector design is critical to the precision, performance, economy and proven reliability of the heui fuel system. Unit injector hydraulic pump 1 injection actuation pressure control valve 10 fuel transfer pump 35 injection actuation pressure sensor 6 note. Hydraulic electronic unit injector heui c7 and c9 components. This is a short promo of automates automotive training module covering heui the precursor to the common rail diesel engine. The plunger pump used is usually driven by a shared camshaft. System on natural gas with diesel pilot injection find, read and cite. The fuel system design eliminates external highpressure fuel lines, providing efficient, precise fuel.
Theoretical and experimental study of a hydraulically actuated. Controlled unit injection, as they combine the features. The hydraulic electronic unit injector heui system uses highpressure engine oil instead of a camshaft to control the injection of fuel. The components of the heui fuel system are not serviceable. Hydraulic electronic unit injector heui hydraulic oil lines. The heui operates in the same way as a hydraulic cylinder in order to multiply the force of the high pressure oil. Introduction this technicians guide explains the fuel injection system operation and is mainly focused on the electronic unit injector. Pdf on oct 25, 1999, talus park and others published operation of a. Electronic unit injectors are mechanically pressurized using electronic control of governing, timing and metering functions. The revolutionary heui injector design is critical to the precision, performance, economy and proven reliability of the heui fuel system. Hydraulic pump group fuel transfer and high pressure oil pumps.
Comparison of jp8 sprays from a hydraulically actuated. These fuel system components must not be disassembled. Caterpillar 3116, 3126 8wl1wm diesel engine special instructions. Specalog for 953c track loader, aehq554102, 10210576. Su concepcion y su resistencia mecanica le permite trabajar en ambientes humedos. A cross sectional view ofthe g2 injector coils andspool valve and plunger. Heui injectors box inserts torx assorted 26 insert and handle for assemblydisassembly star ref. High injection pressures and short injection duration provide fast response, clean burning and added fuel savings. A unit injector ui is a high pressure integrated direct fuel injection system for diesel engines. Photo 514 heui how high pressure oil injection systems work injector oil flow as you can imagine, the engine oil follows a very convoluted, lengthy path before it ever gets to the injectors.
A poppet valve, known also as a spill control valve or solenoid needle valve that. Pdf hydraulically actuated electronic unit injector. The heui injector was designed with a minimum of component parts. The heui uses engine lubrication oil that is pressurized from 6 mpa 870 psi to 27. Pdf operation of a compression ignition engine with a heui. The heui fuel system requires no mechanical adjustment. Navistar heui injector diesel nozzle,diesel plunger,head. In this months basic training we look at mechanical, heui, and commonrail injectors as we give you a proper tutorial on the fuel injectors on your rig. May 02, 2014 this feature is not available right now. Pdfreader, pdfviewer kostenlos adobe acrobat reader dc. Hydraulic electronic unit injection heui automate training. The injector application kits devised for the toledo heui master use. Lorem ipsum dolor sit amet, consect etur adipisic ing elit, sed do eiusmod tempor incididunt ut labore. Heui injectors utilize hydraulic force to pressurize fuel for injection.
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