Afc fuel injection types 1 and 2 from november, 1974. On diesel engines, fuel injection is a necessity, whilst on petrol engines fuel injection is. Understanding how the system functions makes this system easier to diagnose and repair. Troubleshooting the fuelinjection system in the ford ranger can be a daunting task. Some of the vehicles are equipped with a multipoint type injection and others available in 198891 may be equipped with a dualpoint injection system. Airfuel management as well as engine operational functions are performed by an embedded electronic control unit ecu. Troubleshooting cars with electronic ignition and fuel. The electronic control module ecm, or electronic control unit ecu, is a small. This video is the working principle animation of electronic fuel injection system. Fuel pressure should be a constant 10 15 psi on a tbi fuel injection system and is typically around 12 psi. Hondas programmed fuel injection pgmfi systems consist of three subsystems. Shop for affordable electronic fuel injection systems developed using oemlevel components, walkthrough fitech fuel injection. Always check to insure that you have the proper fuel pressure.
We show you how to diagnose and repair your harley davidson motorcycles delphi fuel injection system when you have stalling problems from loss of fuel pressure. Air in fuel system bleed fuel system, eliminate air leaks shut offstart device defective repair or replace fuel filter blocked. Sequential electronic fuel injection engine management systems sequential electronic fuel injection engine management systems sequential fuel injection description system ecu only sequential fuel injection with hei and idle air control wide band oxygen sensing option included 302110. Mixing fuel this way allows for it to puddle and condense in the plenum of the intake manifold, a. Fuel quality contamination i have been involved with diesel fuel injection all my working life and still find the topic of fuel and solutions controversial.
Electronic fuel injection is a great means of delivering fuel to an engine. Closedloop electronic fuel injection 20amp charging, regulated yellow oil cap and dipstick large filters air, oil, fuel hardened crank journals pto sideload sleeve bearing hydraulic valve lifters 12volt solenoid shift electric start dualelement air cleaner dual oil drains electronic ignition solenoid fuel shutdown oil sentry automatic. Troubleshooting guide for engines with electronic fuel injection. Fuel pressure is critical to the operation of a fuel injection system. Part no 4790227 gb troubleshooting guide preliminary.
View online or download mercury 150 efi service manual. Where a carburetor uses mechanical methods to provide the required fueling, the fuel injection system relies on a set of sensors and a computer to calculate and deliver the fuel needs. Some, however, use a vane type fuel pump mounted directly to the injection pumpfuel distributor assembly. Injector nozzle breakage and leakage problems were solved. Electronic fuel injection system diesel engine author. Harley davidson delphi fuel injection problems part 1. Certain mechanical fuel injection systems also utilize a mechanical fuel pump, typically some early gasoline fuel injection systems. Explore electronic fuel injection with free download of seminar report and ppt in pdf and doc format.
Todays impressively powerful vehicles are possible through direct fuel injection. Electronic fuel injection efi is interesting tech, critical to the performance of a modern engine. Installing a good ecu while a problem still exists elsewhere in the system. Efielectronic fuel injection systems at summit racing. Electronic fuel injection efi drove carburetors out of newcar production for good about a decade ago. The efi engines run more smoothly, with lower emissions and fuel consumption.
Take a technological leap forward with a new electronic fuel injection system from summit racing. The efi system uses various sensors to detect the engine condition and vehicle running condition. Fuel injection electronic gasoline fuelinjection systems from the mid 1970s to the mid 1990s and later are all very similar in design and operation because they share a common beginning with robert bosch gmbh, a german company. Principle and working of electronic fuel injection system. Delphi pump diagnostic troubleshooting oregon fuel injection. Highpressure fuel is supplied to the fuel injector by the fuel pump. Higher pressure than 15 psi indicates that there is. Bosch ljetronic fuel injection troubleshooting, maintenance. This design delivers the fuel into the air flow stream in the plenum similar to a carburetor. The ecm determines the timing, the injection pressure, and the amount of fuel that is delivered to each cylinder.
User manual for efi fuel systems pg engineered control. Pdf sensors system,advanced fuel injection system,computer. Troubleshooting guide for diesel fuel injection systems with bosch inline fuel injection pumps tank empty or tank vent blocked fill tankbleed system, check tank vent. Engine acceleration or response poor cranking fuel pressure is low engine operating fuel pressure is low engine decelerates slowly. Between the years 1973 and 1995, the highly reliable, mechanical multipoint injection system kjetronic was installed as original equipment in seriesproduction vehicles. Principle of efi efi is an indirect, pressurized injection system with injectors operated by. Originally hated as computercontrolled carburetors, efi gained reliability in the 1980s and picked up performance in the 1990s. Today, it has been superseded by gasoline injection systems which thanks to. Electronic fuel injection seminar report, ppt, pdf for. Table of contents page contact list 3 engine management system overview 4 a ecm system components 7. Gasoline engine efi electronic fuel injection fuel. The fuel tank breather can sometimes be blocked causing a vacuum in the tank which in turn draws the fuel back to the tank. Pdf automobile engineering report on electronic fuel. Efielectronic ignition k100 2v troubleshooting disclaimer.
Modern automobiles use electronic fuel injection efi in their fuel delivery system in order to increase the efficiency. Many of them use a fuel pump essentially identical to the carbureted fuel systems. Engine performance troubleshooting tree cm554 electronic control system with caps fuel system this troubleshooting procedure should be followed for the following symptoms. Its the most universal type of electronic fuel injection system, but its not ideal for high performance engines. The problem with such constantflow mechanical injection systems is that the. Some of these are in our stalling nonstarting repair page. These factors are based on the actual conditions and on the desired conditions at any given time during starting and operation. I am not a professional but only a k100 enthusiast with good knowledge of the bike. If equipped with a fuel supply pump check for minimum of 23 psi fuel supply pump pressure. Unit which interprets data from sensors that monitor the vital parts of the. Bosch is the largest supplier of fuelinjection systems in the world. Electronic fuel injection system diesel engine keywords.
Engine type electronic fuel injection efi engine rpm 3600 recommended oil 10w30 sae 30 oil capacity qt l 1. Yet we can actually trace efis roots back way before thento the systems developed by robert bosch in the late 60s and early 70s for volkswagen and other european carmakers. The lift pump produces a positive pressure, but of more importance, a solid column of fuel at the inlet of the injection pump. The efi is controlled by the ecu electronic control. Also explore the seminar topics paper on electronic fuel injection with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020. This system consists of the unit injectors, fuel manifolds, electronic pressure regulator, high pressure fuel pump, electronic control unit, wiring harness, and engine sensors. Afc fuel injection training and troubleshooting manual.
It gives the clear idea about how to work a fuel injection system. Most of the information contained is this document was not available anywhere on. Chrysler cars with fuel injection all have electronic ignition which became standard in the mid1970s across the line. The main difference between carburetor and fuel injection system carburetorzfuel is atomized by processes relying on the air speed greater than fuel speed at the fuel nozzle, zthe amount of fuel drawn into the engine depends upon the air velocity in the venturi fuel injection systemzthe fuel speed at the point of delivery is greater than the air speed to atomize the fuel. Advanced diesel electronic fuel injection and turbocharging. A servojet electronic fuel injection system was designed and manufactured for the cummins vta903 engine. User manual for efi fuel systems pg engineered control solutions. We carry many efi systemsmany selftuning and selflearningfrom the top players in engine performance, including msd ignition, edelbrock, holley, fast, accel, chevrolet performance, quick fuel, and more. Pdf advanced electronic fuel injection systemsan emissions. Troubleshooting guide for diesel fuel injection systems. Introduction to fuel injection common service manual. To help our customers shop hasslefree, we have categorized our products. Our framemount inline pump kit comes with the fuel pump and many items.
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