Hydraulic Electronic Unit Injector Consists Of

Hydraulic Electronic Unit Injector HEUI Testing Bench 569 Figure 3. Deviations from the correct sequence of the process may cause additional diagnostic time and a result in a claim that will not be paid.

161331173 Diesel Trucks Diesel Fuel Trucks Lifted Diesel

A gear driven axial pump raises the normal pressure to the.

Hydraulic electronic unit injector consists of. HYDRAULIC ELECTRONIC UNIT INJECTOR HEUI FUEL SYSTEM The operation of the HEUI fuel system Figure 3 is different from mechanically actuated fuel injection systems. Vehicle Specific Application Kits including cams. The fuel injection system in two stroke engine is very important therefore the hydraulic electronic unit injector system is developed and the injection characteristics of hydraulic electronic unit injector are investigated.

In a unit injector the device is usually lubricated and cooled by. The diagnostic documents for troubleshooting the systems of the Hydraulic Electronic Unit Injector HEUI have been revised in order to provide significantly improved diagnostic methods. Adherence to the updated diagnostic flow chart is required.

INJECTOR COMPONENTS The injector contains 35 part numbers. The spring-loaded plunger and barrel assembly to pressurize fuel inside the injector. Channel 1 red in figure 4 shows the injector voltage and channel 2 yellow the current through the servo hydraulic injector.

Firstly the HFPE and the hydraulic electronic unit injector working principle are analyzed and then PID control strategy is built by engine demand. The unit injector hydraulic pump uses an axial piston. Hydraulic Electronic Unit Injector HEUI C7 and C9 - Components.

Approximately 4A is required to energize the solenoid and 15A holds it open. A solenoid on each injector meters the amount of fuel that is delivered by the injector. Intensification of the fuel pressure to desired injection pressure levels is accomplished by the ratio of areas between the intensifier piston and.

Range of Solenoid and Piezo amplifiers. The unit injector hydraulic pump pressurizes the engine lubrication oil to the injection actuation pressure that is required in order to power the HEUI injectors. A solenoid on each injector controls the amount of fuel delivered by the injector.

This fuel system consists of six basic components. Many of the mechanical drive components found in standard mechanical or electronic unit injection systems are not used in this system. In order to validate the feasibility of hydraulic electronic unit injector.

Principal Component in the HEUI System 4. Electronic unit injectors are mechanically pressurized using electronic control of governing timing and metering functions. Lets concentrate on the main injection visible in figure 4.

The signals consist of three injections of which the first two are pre injections and the last is the main injection. The hydraulic electronic unit injectors use high pressure engine oil to provide the force needed to complete injection. The HEUI injector serves four functions.

Unit injector hydraulic pump is a piston pump that has a fixed displacement. The HEUI injector functions as an atomizer by pumping high-pressure fuel through orifice holes in the unit injector tip. 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.

HEUI consists of five major componentsa solenoid poppet valve mushroom- shaped intensifier piston barrel and a seven-hole nozzle assembly Fig. This engine utilizes a Hydraulic Electronic Unit Injector fuel system HEUI. The unit injector hydraulic pump uses a portion of the engine lubrication oil.

Hydraulic Electronic Unit Injector HEUI 5 Electronic Control Module ECM 18 Unit injector hydraulic pump 1 Fuel transfer pump 11 Injection Actuation Pressure sensor 9. It consists of a range of basic elements such as the spring-loaded plunger and barrel to pressurize the fuel in the injector the poppet valve to regulate the pressure build-up an electric solenoid to actuate movement of the needle or poppet valve fuel inlet. The HEUI injector pressurizes supply fuel from 450 kPa 65 psi to 175 MPa 25382 psi.

HK1500 Rack Enclosure kit. The plunger pump used is usually driven by a shared camshaft. The middle segment of the injector consists of the hydraulic intensifier piston the plunger and barrel and the plunger return spring.

Early Lucas electronic diesel unit injector. Load cell for peak pressure measurement. An Electronic Control Module ECM sends a signal to the injection actuation pressure control valve.

A poppet valve known also as a spill control valve or solenoid needle valve that. An axial piston pump that is referred to as the unit injector hydraulic pump pressurizes oil in order to activate the injector. HK1502 Base Cambox inc.

The electronic unit injector is mechanically pressurized using the electronic control of metering timing and governing functions. A unit injector consists of several basic elements.

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