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	Fuel injection - Wikipedia, the free encyclopedia
		Fuel injection atomizes the fuel by forcibly pumping it through a small nozzle under high pressure, but a carburetor relies on the vacuum created by intake air rushing through it to add the fuel to the airstream.
		There are other benefits associated with fuel injection, such as better atomization of the fuel in the intake (constant-choke carburetors have poor atomization at low air speeds, needing modifications such as sequential twin-barrel designs) and better breathing due to eliminating the carburetor's venturi.
		The fuel distributor is mounted atop a control vane through which all intake air must pass, and the system works by varying fuel volume supplied to the injectors based on the angle of the air vane, which in turn is determined by the volume flowrate of air past the vane.
	en.wikipedia.org /wiki/Electronic_fuel_injection (4765 words)

	Howstuffworks "How Fuel Injection Systems Work"
		The 1990 Subaru Justy was the last car sold in the United States to have a carburetor; the following model year, the Justy had fuel injection.
		But fuel injection has been around since the 1950s, and electronic fuel injection was used widely on European cars starting around 1980.
		In this article, we'll learn how the fuel gets into the cylinder of the engine, and what terms like "multi-port fuel injection" and "throttle body fuel injection" mean.
	auto.howstuffworks.com /fuel-injection.htm (182 words)

	d-jet
		A time switch, in control unit, allows fuel pump to run approximately 1 to 1.5 seconds after ignition is turned on, The control unit is connected to all sender units by a special wiring harness, coupled to a multiple plug.
		A fuel injection system that uses 1 injector per cylinder, mounted on the engine to spray fuel near intake valve area of combustion chamber.
		A fuel injection system which uses a micro-computer to determine and control the amount of fuel required by, and injected into, a particular engine in the same sequence as engine firing sequence.
	www.icbm.org /erkson/ttt/engine/fuel_injection/d-jet.html (2922 words)

	Automotive Tutorial - Electronic Fuel Injection
		The fuel is delivered to the engine in precise quantities and in most cases is injected into the inlet manifold to await the valve's opening, then drawn into the combustion chamber by the incoming air.
		This type of high-pressure fuel pump (Fig 1.0) is called a roller cell pump, with the fuel entering the pump and being compressed by rotating cells which force it through the pump at a high pressure.
		When the fuel pump is activated, fuel flows into the system until the required pressure is obtained; at this point 'excess' fuel is bled past the pressure regulator and back into the tank.
	www.picotech.com /auto/tutorials/fuel-injection.html (1587 words)

	Electronic Fuel Injection
		Electronic Fuel Injection is a quick, responsive, reliable way to meter the right amount of fuel and spark for a given volume of air to an engine.
		Fuel injectors are really just simple solenoid devices that allow pressurized fuel to be squirted into your intake manifold in a fine spray for a predetermined period of time.
		Fuel pressure is determined by both the fuel pump and the fuel pressure regulator.
	www.well.com /~mosk/EFI1.htm (2725 words)

	Electronic Fuel Injection for sale - Intlwaters Community Forum
		The presence of fuel line between the regulator and the carb reduces it's effectiveness, not to mention the rate at which EGT varies in a 2 stroke being very different to a 4 stroke.
		The fuel delivery is not constant thru a jet like a carb, but the injector opens and closes regularly to supply the precise amount of fuel to maintain the correct pre-determined mixture.
		Bob Fuel injection cars has been around cents early 1980"s the first fuel injection was back in the 1955.
	www.intlwaters.com /index.php?showtopic=5943 (754 words)

	Electronic Fuel Injectors
		Vehicles equipped with electronic controlled fuel injection are now the standard in the automotive industry, and many new boats are also being built with similar systems.
		With this equipment, and highly competent technicians, we are able to take your "tired and dirty" electronic fuel injectors, and renew them to like new condition, at a savings of over 75% of replacing the injectors with new.
		So if you feel that you are experiencing a problem that might be fuel injector related, or you just want to breath some new life into your vehicle, call us or Email us, and we'll gladly discuss your particular situation with you, and give you a quote.
	automarine.com /inboardfuelinjectors.html (385 words)

	Chief Marine Electronic Fuel Injection Systems
		Exact fuel control for every rpm and load value increases overall fuel economy from 15% to 20%.
		The intake manifold, billet throttle body, billet fuel rails, injectors and related miscellaneous parts are factory-assembled and tested prior to packaging.
		The spark and fuel maps can also be viewed in a graphical form, which helps to better visualize the data.
	www.chiefengines.com /efi.htm (1809 words)

	Electronic Fuel Injection
		Fuel injecting the Pantera provides ease of starting and improved drivability under most all operating conditions.
		The original fuel supply line can be utilized for a return line however the fuel strainer which is in the tank will need to be defeated.
		Any equivalent fuel lines can be used as long as they are rated for the pressures as put out by the fuel pump.
	www.panteraplace.com /page176.htm (1410 words)

	Electronic Fuel Injection and The Power Commander
		Electronic Fuel Injection (EFI) was introduced by Mother Harley in the 1995-96 model year on some of the FLT series chassis bikes.
		This 14 to 1 is the air to fuel ratio.
		Electronic fuel injection provides very precise fuel metering at all throttle positions under a variety of atmospheric conditions.
	www.hdforums.com /m_69174/tm.htm (894 words)

	Joe's Spitfire4 (Site not responding. Last check: 2007-11-06)
		Timing is provided by a crank trigger consisting of embedded magnets installed in the fan belt pulley and a Hall Effect sensor which is controlled by the ECU located in the passenger compartment kick panel.
		Fuel is provided by a Universal In-line pump through the fuel rail and is regulated at 39 psi by a Mallory 4305M regulator and returned to the tank at the top.
		The SDS controller is programmed and adjusted by a hand held controller and a fuel mixture knob, both of which can be disconnected when the settings are attained.
	members.cox.net /spitlist/EFI.htm (346 words)

	RaceKrafters > Electronic Fuel Injection > Holley Fuel Injection
		Now, performance enthusiasts will be able to control fuel delivery, spark timing, boost compensation, fuel pump, cooling fan, true idle quality and more.
		The Holley Multi-Point Fuel Injection Power Pack kits are complete fuel injection systems, except for ECU, wiring harness and fuel pump, for Chevrolet V8 engines.
		They are available with a variety of fuel injector sizes, the largest being able to sustain up to a 1600 horsepower motor.
	www.racekrafters.com /efi_comps_holley.shtml (434 words)

	Electronic Fuel Injection Help Needed
		There are fuel to air ratio laws derived for spark ignition engines which ensure the maximum power and the minimum consumption of fuel, which are the two principal functioning modes of the injection.
		The objective of fuel injection is to obtain a much better - fuel/air (oxidizer) mixture - in order to maximize combustion efficiency.
		Then there is the electronic control system - solid-state digital microprocessor, sensors and actuators - which controls flow rate and pressure of fuel in conjunction with flow rate, temperature and pressure of the air.
	www.physicsforums.com /showthread.php?p=459426 (560 words)

	Troubleshooting Electronic Fuel Injection Problems
		Electronic fuel injection is a great means of delivering fuel to an engine.
		Fuel injection problems encompass everything from hard starting, stalling and misfiring to hesitation, surging and no-starts.
		This test can be done by connecting a fuel flow gauge into the fuel supply line, or by disconnecting the fuel return line from the fuel pressure regulator and connecting a hose from the regulator to a large container.
	www.aa1car.com /library/2003/us60324.htm (2204 words)

	Ontronic 32-bit Electronic Fuel Injection (EFI)
		The numerical data processing is performed by a 32-bit microprocessor, which processes all service parameters to fuel injection and ignition data using several tuning maps (climatic correction, sensors calibration, static and dynamic engine processes).
		EFI is the abbreviation for Electronic Fuel Injection.
		Electronic fuel injection is superior to carburetion because it allows more precise fuel metering for easier starting, lower emissions, better fuel economy and engine performance.
	www.ontronic-efi.com (264 words)

	Installing Electronic Fuel Injection (Site not responding. Last check: 2007-11-06)
		Think of electronic fuel injection as your engine's performance management system, monitoring every aspect and adjusting fuel delivery and spark timing perfectly based on the engine's needs.
		Injectors are fed through two fuel rails that run the depth of the engine, with one rail on each bank.
		The fuel pressure regulator controls return flow to the fuel tank, thereby controlling pressure.
	www.mustangandfords.com /techarticles/5228 (2397 words)

	How GM Electronic Fuel Injection
		This document describes how GM Fuel Injection manages fuel and spark in gasoline engines from a novice’s point of view.
		There are three basic functions of GM fuel injection; fuel management, spark control, and transmission control.
		This is because a portion of the gasoline doesn’t vaporize and pools inside the manifold until engine heat vaporizes the fuel.
	fastfieros.com /tech/how_gm_electronic_fuel_injection.htm (3278 words)

	Electronic Fuel Injection
		The fuel regulators on the D-Jetronic system maintain the pressure in the fuel rail at a constant value, while the regulators for the Digital P system vary the fuel rail pressure according to intake manifold vacuum.
		Fuel injectors tend to be blamed for a lot of problems, probably more than they actually are responsible for.
		Note: if the left side fuel pressure regulator is not connected directly to manifold vacuum, it may not be wise to disconnect the vacuum to the right fuel pressure regulator.
	www.jag-lovers.org /books/xj-s/07-FuelEFI.html (9773 words)

	Electronic Fuel Injection
		Port injection systems are far superior to throttle body in terms of performance.
		Since each cylinder receives fuel individually, the computer is able to control fuel consumption as well as power much more efficiently.
		A fuel injector is a solenoid that opens and closes allowing fuel to pass through it.
	www.gerrysap.com /efi.html (2129 words)

	Electronic Fuel Injection for the GMC Motorhome
		The purpose of EFI is to match the amount of fuel burned to the amount of oxygen present under all operating conditions and reduce emissions.
		The fuel injection period is based upon the position of the throttle, signals from the MAP and the Oxygen Sensor when running in the closed loop mode.
		Figure 4 is a schematic showing how electronic spark timing is controlled by monitored advances of rpm, coolant temperature and manifold pressure (reduction) less any imbalanced mechanical advance to result in total spark advance to the distributor.
	www.gmcws.org /Tech/efi/efi.html (1949 words)

	Electronic Fuel Injection Stuff
		Injection won't make a slow engine fast, or improve economy.
		The way to make an fuel injected engine powerfull is to concentrate on the short block of the engine (more later - cams/compression/cylinder heads)....
		larger fuel injectors or increase fuel pressure and use a fuel pressure regulator.
	www.nastyz28.com /fuelie.html (1226 words)

	Automotive Tutorial - Electronic Fuel Injection (part 2)
		The multi-point injector is an electro-mechanical device, which is fed by a 12 volt supply from either the fuel injection relay or from the Electronic Control Module (ECM).
		With simultaneous injection the injectors are wired in parallel and all fire together at the same time (Fig 1.0).
		This individual firing allows the system, when used in conjunction with a phase sensor, to deliver the fuel when the inlet valve is open and the incoming air helps to atomise the fuel.
	www.picotech.com /auto/tutorials/fuel-injection2.html (1205 words)

	Mechanical Electronic Fuel Injection - Conversion — Hot Rod Magazine (Site not responding. Last check: 2007-11-06)
		This is because mechanical fuel injection was originally designed for racing with an emphasis on wide-open-throttle metering.
		Mechanical devices like a carburetor or mechanical fuel injection rely on a manifold vacuum signal or crude mechanical controls to meter fuel at part throttle, and therefore are a compromise throughout most of the engine’s part- and full-throttle rpm range.
		Factory fuel and spark maps are burned into dedicated chips that cannot be reprogrammed easily, and while it’s certainly possible to customize a chip to make the system driveable, this should be left up to only the most EFI knowledgeable.
	www.hotrod.com /techarticles/mechanical_to_electronic_fuel_injection (1715 words)

	Motorcycle Fuel Injection Kits and Electronic Fuel Injection Systems - EFI
		With the complexity of factory OEM fuel injection systems, Techlusion felt it was important to give the motorsports owner/tuner a product that was easy to operate and understand while not upsetting the stock fuel curve or any of its functions.
		Finally, an affordable way to adjust your fuel injection system to accommodate modifications to your motorcycle's exhaust system, air cleaner, or engine components.
		Even though you may encounter the same throttle positions at the same R.P.M.s in both situations, the engine's fuel requirement will not be the same because it The TFi module allows you to tune the fuel injection much the same way you jet a carburetor.
	www.techlusion.com (517 words)

	How GM Electronic Fuel Injection Works
		Once the ECM goes into closed loop, the Integrator begins to adjust the fuel delivery to maintain a 14.7 A/F ratio, however, the Integrator term is only weighted half as much as the Block Learn term.
		Asynchronous Fuel Mode — This is not a term in the equation above but rather a temporary mode in which the injectors are commanded on longer for transient conditions.
		The accelerator pump shot is an asynchronous mode function in which extra milliseconds are added to the injector pulse width when the throttle postion sensor rapidly changes state.
	www.customefis.com /GMEFI.html (4278 words)

	EFI Components For Electronic Fuel Injection (Site not responding. Last check: 2007-11-06)
		Making the change from carburetion to fuel injection can be intimidating.
		The MAP sensor relays engine load output to the ECU which in turn adjusts fuel enrichment for optimum performance and economy.
		Designed for do-it-yourself fabricators who design their own multi-port fuel injection manifolds, these aluminum bushings can be welded or epoxied in a single plane, dual plane, tunnel ram or sheet metal manifold.
	www.fuelairspark.com /Products/Information/EFIcomponents.asp (387 words)

	Introduction to MegaSquirt (Site not responding. Last check: 2007-11-06)
		The philosophy for the MegaSquirt system is simple: provide a controller for fuel injectors which can be adapted to any application, without having to write embedded code or understand the details of engine controls.
		MegaSquirt is a universal electronic fuel injection controller that can be made to work on any spark ignition internal combustion engine, with the right external parts.
		MegaSquirt is the fuel injection controller only, and YOU will have to figure out everything else you need for your vehicle.
	www.megasquirt.info /v22manual/mintro.htm (3042 words)

	Electronic Fuel Injection Sites
		Fel-Pro Speed-Pro® Electronics Menu Now it looks like it's called F.A.S.T. This is the current bad boy ECM in the street car shootout classes- Fel-Pro (F.A.S.T) has really got their sh-t together with this one.
		I think this software would be better for someone racing one car (as long as they could get it to link to it) As far as someone who always has friends coming over and wanting them to hook their car up and see what's wrong with it, it is quite frustrating.
		RC Engineering Another fuel injector clean and blueprint company, they also sell new injectors among other parts.
	www.nitrostreet.com /efi.html (1536 words)

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