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You can find and buy High Pressure Fuel Pump / Fuel Injection Pump of high High Pressure Fuel Pump / Fuel Injection Pump – HYUNDAI H Box D (57 . The last carburetor-equipped car came off the assembly line in Since then, fuel injectors have been the primary means of getting gasoline into the engine. For the engine to run smoothly and efficiently it needs to be provided with the right quantity of fuel/air mixture according to its wide range of demands.

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How Direct Injection Engines Work

Archived from the original on The engine had six electrically operated injectors and were fed by a semi-high-pressure circulating fuel pump system. Petrol engines can use gasoline direct injectionwhere the fuel is directly delivered into the combustion chamberor indirect injection where the fuel is mixed with air before the intake stroke.

Finally, the homogeneity of the fuel mixture allows for leaner air—fuel ratios, which together with more precise ignition timing injwction improve fuel efficiency.

It works, but from an engineering standpoint, inhection leaves much to be desired, and it’s pretty wasteful. This postponed the redesign and tooling costs of these components. The primary factor used in determining the amount of fuel required by the engine is the amount by weight of air that is being taken in by the engine for use in combustion. A typical system is the Bosch LJetronic, which is fitted to a wide range of European cars. Then, that cylinder’s designated spark plug fires, igniting the chamber into a high-pressure, high-energy explosion.

This system directed the inducted engine air across a “spoon shaped” plunger that moved in proportion to the air volume. An early use of indirect gasoline injection dates back towhen French aviation engineer Leon Levavasseur installed it on his pioneering Antoinette 8V aircraft powerplant, the first V8 engine of any type ever produced in any quantity. The fuel is sprayed with the help of a nozzle that is opened and closed with a needle injectio, operated with a solenoid.


By using this site, you agree to the Terms of Use and Privacy Policy. This was basically a specially lubricated high-pressure diesel direct-injection pump of the type that is governed by the vacuum behind an intake throttle valve. The other popular system is timed injection pulsed injection where the fuel is delivered in bursts to coincide with the induction stroke of the cylinder. Fuel injection systems are also able to operate normally regardless of orientation, whereas carburetors with floats are not able to operate upside down or in microgravity, such as encountered on airplanes.

Direct Injection Basics | HowStuffWorks

The functional objectives for fuel injection systems can vary. The carburetor remains in use in developing countries where vehicle emissions are unregulated and diagnostic and repair infrastructure is sparse.

This fuel is then sent through tubing to the injectors, which inject it into the combustion chamber. The computer compares the input signals from the sensors with information already programmed into it at the factory, and works out exactly how much fuel should be delivered to the engine. The system was subsequently adopted very successfully in Formula One racing, securing championships by CooperBRMLotusBrabhamMatraand Tyrrell in the years through This was a “port” injection where the injectors are located in the intake manifold, very near the intake valve.

These measure factors such as the air pressure and temperature in the air intake, the engine temperature, accelerator position and engine speed.

Since the fuel passes through the intake runners like a carburetor systemit ihjection called a “wet manifold system”. As well as improved control over fuel flow, the electronic system also operates at lower pressure than a mechanical system – usually at around psi. Due to the wartime relationship between Germany and Japan, Mitsubishi also had two radial aircraft engines using duel injection, the Mitsubishi Kinsei kinsei means “venus” and the Mitsubishi Kasei kasei means “mars”.


Fuel injection – Wikipedia

For cold starting, a choke on the dash or, on later models, a microprocessor control unit brings a special cold-start injector into operation, which injects extra fuel to create a richer mixture. Please help improve this article by adding citations to reliable sources.

The two most critical differences between a direct injection engine and a standard gasoline engine are how they deliver fuel and how the fuel mixes with incoming air. The injectors are one of two types, depending on the injection system.

The injectors spray gasoline into the air intake manifold, where fuel and air mix together into a fine mist. The amount of fuel injected depends on how long the solenoid holds the injector open.

Gasoline fuel injector for Opel Astra F 1.7 D, 57 hp, station wagon, 1992

The Bendix system is a direct descendant of the pressure carburetor. Did cars ever have external combustion engines? Global Fuel Economy Initiative. It then signals the on-off valve ig the injector fjel open and squirt fuel into the inlet port. Single-point injection was used extensively injectio American-made passenger cars and light trucks duringand in some European cars in the early and mids.

This mechanical system was used by some MaseratiAston Martinand Triumph models between and The first automotive direct injection system used to run on gasoline was developed by Boschand was introduced by Goliath for their Goliath GP automobile, and Gutbrod in In Brazil, carburetors were entirely replaced by fuel injection during the s, with the first EFI equipped model built injrction the Volkswagen Fox.