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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By virtue of better dispersion and homogeneity of the directly injected fuel, the cylinder and piston are cooled, thereby permitting higher compression ratios and earlier ignition timingwith resultant enhanced power output. This was designed to meet the U. Part of the Inejction series.

With their extremely fast response time, multiple injection events can occur during each cycle of each cylinder of the engine. Following injextion racetrack success, the Mercedes-Benz SLthe first production sports car to use fuel injection, used direct injection.

How Fuel Injection Systems Work | HowStuffWorks

Continuous injection systems can be multi-point or single-point, but not direct. Since the early s, almost all gasoline passenger cars sold in first world markets are equipped with electronic fuel injection EFI. The fuel then squirts out into the inlet port in the cylinder head. To find out more about what makes direct injection engines more efficient, move on to the next injecttion. Along with this, the engine can operate with stratified lean-burn mixtures, and hence avoid throttling losses at low and part engine load.

In a continuous injection system, fuel flows at all times from the fuel injectors, but at a variable flow rate. Fuel injection also dispenses with the need for a separate mechanical chokewhich on carburetor-equipped vehicles must be adjusted as the engine warms up to normal temperature. Most of the 35 vehicles originally so equipped were field-retrofitted with 4-barrel carburetors. An electronic system is operated entirely by a microprocessor control unit.

This injectipn pressure must be relieved, and if it is done so by external bleed-off, the fuel must be safely contained. All diesel engines use fuel injection by design. Instead of hanging out in the air intake manifold, fuel is squirted directly into the combustion chamber. To injevtion fuel starvation when subject to lateral G-forcesvehicles are often provided with an anti-surge vessel, usually integrated in the fuel tankbut sometimes as a separate, small anti-surge tank. May Learn how and when to remove this template message.


Views Read View source View history. The relative proportions of air and fuel vary according to the type of fuel used and the performance requirements i. This works much like the spray nozzle of a hoseensuring that the fuel comes out as a fine mist.

Many motorcycles still use carburetored engines, though all current high-performance designs have switched to EFI. Throughout the early history of diesels, they were always fed by a mechanical pump with a small separate chamber for each cylinder, feeding separate fuel lines and individual injectors.

Diesel fuel injector for Citroen Saxo D, 57 hp, 5 doors, Price: €

Unlike carburetor-based systems, where the float chamber provides a reservoir, fuel injected systems depend on an uninterrupted flow of fuel. Excerpts from the Rambler Rebel Owner’s Manual “. A fuel pump sends the petrol to the engine bay, and it is then injected injeciton the inlet manifold by an injector. Fuel pressure is injectioj to a single-point injection system.

The fuel injector injects liquid fuel into the intake air the location of the fuel injector varies between systems.

Duel was widely adopted on European cars of that period, and a few Japanese models a short time later. Journal of the American Medical Association. Lucas licensed the system for production in Jaguar cars, initially in D-Jetronic form before switching to L-Jetronic in on the XK6 engine.

This alters the position of a shuttle valve within the metering control unit to allow more fuel to be squirted into the cylinders.

Maintaining the correct d557 pressure is done by a fuel pressure regulator. A throttle position sensor TPS provides this information. Early injection systems used mechanical methods to meter fuel, while nearly all modern systems use electronic metering. Porsche racing variants such as the RSR 2. In piston aircraft engines, continuous-flow fuel injection is the most common type.

The system was subsequently adopted very successfully in Formula One racing, securing championships by CooperBRMLotusBrabhamMatraand Tyrrell in the years through The carburetor remains in use in developing countries where vehicle emissions are unregulated and diagnostic and repair infrastructure is sparse.


Instead a manual control on the dash resembling a choke knob or, on later models, a microprocessor alters the position of the shuttle valve within the metering unit. There is either a separate injector for each cylinder or one or two injectors into the inlet manifold. Each injector contains a spring-loaded valve that is kept closed by its spring pressure.

Retrieved from ” https: MPI systems can be sequentialin which injection is timed to coincide with each cylinder’s intake stroke; batchedin which fuel is injected to the cylinders in groups, without precise synchronization to any particular cylinder’s intake stroke; or simultaneousin which fuel is injected at the same time to all the cylinders.

First, the fuel travels via pump from the fuel tank, through the fuel line and into fuel injectors that are mounted into the engine. Fuel injection was phased in through the latter s and 80s at an accelerating rate, with the German, French, and U.

Fuel injection

In a direct injection engine, fuel is injected into the combustion chamber as opposed to injection before the intake valve petrol engine or a separate pre-combustion chamber diesel engine.

Constant-flow injection systems continue to be used at the highest levels of drag v57, where full-throttle, high-RPM performance is key. These basic premises make a tremendous difference in an engine’s overall efficiency. More precise management of the fuel injection event also enables better control of emissions. Others use indirect injection injecion which the diesel fuel is injected into the specially shaped pre-combustion chamber which has a narrow passage connecting it to the cylinder head.

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. The first system uses continuous injection where the fuel is squirted into the inlet port all the time the engine is running.