Jun 04 2020

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.

Author: Voodoole Musida
Country: Sao Tome and Principe
Language: English (Spanish)
Genre: Health and Food
Published (Last): 28 February 2017
Pages: 273
PDF File Size: 15.49 Mb
ePub File Size: 19.21 Mb
ISBN: 916-2-87494-364-9
Downloads: 58014
Price: Free* [*Free Regsitration Required]
Uploader: Majinn

All modern petrol injection systems use indirect injection. From the accumulatorthe fuel passes through a paper element filter and then feeds into the fuel-metering control unit, also known as the fuel distributor. Read more essential guides Servicing a mechanical fuel pump Do not clamp a pump in a vi This is in contrast to most fuel injection systems, which provide fuel during short pulses of varying duration, with a constant rate of flow during each pulse.

This system was used on the hot-bulb engine and was adapted and improved by Bosch and Clessie Cummins for use on diesel engines Rudolf Diesel ‘s original system employed a cumbersome ‘air-blast’ system using highly compressed air [ citation needed ]. May Learn how and when to remove this template message. Fuel injection was phased in through the latter s and 80s at an accelerating rate, with the German, French, and U. The EFI system was developed to satisfy stringent emission control requirements and market demands for a technologically advanced responsive vehicle.

For the lay individual, the labyrinth of hoses, wire harnesses, manifolds and tubing beneath a car hood might appear intimidating. Then, that cylinder’s designated spark plug fires, igniting the chamber into a high-pressure, high-energy explosion. Fuel injection introduces potential hazards in engine maintenance due to the high fuel pressures used. The airflow is controlled by a flap valve which opens in response to the accelerator pedal.

Fuel injection – Wikipedia

This activates an extra injector mounted in the manifold, causing it to squirt in extra fuel to enrich the mixture. Journal of the American Medical Association. As with continuous injection, timed injection can also be controlled either mechanically or electronically.


Since the fuel passes through the d577 runners like a carburetor systemit is called a “wet manifold system”.

Scania fordonshistoria Scania: How Direct Injection Engines Work. Although not part of the injection control, a catalytic converter further reduces exhaust emissions. The computer compares the input signals from the sensors with inejction already programmed into it at the factory, and works out exactly how much fuel should be delivered to the engine.

How a fuel injection system works | How a Car Works

The duration that the injector is open called the pulse width is proportional to the amount of fuel delivered. The system uses tubes with poppet valves from a central injector to spray fuel at each intake port rather than the central throttle-body [ citation needed ].

Components Propeller governor Propeller speed reduction unit Spinner. The flap sits beneath injectio control unit and rises and falls in response to airflow – as you open the throttle, the ‘suck’ from the cylinders increases the airflow and the flap rises.

How Fuel Injection Systems Work

Often a fuel rail is used to divide the fuel supply into the required number of cylinders. The New York Times. With its own high-pressure fuel pump driven by a cable from the distributor to the fuel meter, the system supplied the necessary pressure for injection. The fuel injection system in petrolengined cars is always indirect, petrol being injected into the inlet manifold or inlet port rather than directly into the combustion chambers.

This is complex and can be expensive. Another mechanical system, made by Bosch called Jetronicbut injecting the fuel into the port above the intake valve, was used by several European car makers, particularly Porsche from until in the production range and until on the Carrera 3.

When working together, these electronic components can sense variations and the main system computes the inkection amount of fuel needed to achieve better engine performance based on a stored “map” of optimal settings for given requirements. Bosch fuel injection systems. These basic premises make a tremendous difference in an engine’s overall efficiency.


Aircraft Engine Historical Society. Petrol-engined cars use indirect fuel injection. The first system uses continuous injection where the fuel is squirted into the inlet port all the time the engine is running.

Fuel pressure is similar to a single-point injection system. This page was last edited on 20 Decemberat Injextion pollution from motor vehicles; standards and technologies for controlling emissions.

With a direct injection engine, however, the fuel gets to skip a step and add a bit of efficiency. Carburetors have the potential to atomize fuel better see Pogue and Allen Caggiano patents. The engine control unit is central to an EFI system. W8 Feul W16 W Once the engine has warmed up to a certain temperature, a thermoswitch automatically cuts off the cold-start injector.

All modeled in 3D We’ve created the most detailed 3D model ever produced so we can show you everything working. Others use indirect injection in which the diesel fuel is injected into the specially shaped pre-combustion chamber which has a narrow passage connecting it to the cylinder head. In fact, most aircraft that use the TCM fuel injection system feature a fuel flow gauge that is actually a pressure gauge calibrated in gallons per hour or pounds per hour of fuel.

With direct injection engines, fuel is squirted directly into the combustion chamber instead of hanging out in the air intake manifold. A fuel pump sends the petrol to the engine bay, and it is then injected into the inlet manifold by an injector.

This approach required injeftion sensors to measure the atmospheric pressure and temperature, to ultimately calculate “air mass”. The amount of fuel sprayed is increased or decreased by a mechanical or electrical control unit – in other words, it injectioon just like turning a tap on and off. Please help to improve this article by introducing more precise citations.

Propeller governor Propeller speed reduction unit Spinner.