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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Single-point injection was used extensively on American-made passenger cars and light trucks duringand in some European cars in the early and mids. The ECU interprets data from input sensors to, among other tasks, calculate the appropriate amount of fuel to inject. This activates an extra injector mounted in imjection manifold, causing it to squirt in extra fuel to enrich the mixture.

Continuous injection systems can be multi-point or single-point, but not direct. The more consistent and predictable composition of the exhaust makes emissions control devices such as catalytic converters more effective and easier to design. An electronic system is operated entirely by a microprocessor control unit.

Fuel injection – Wikipedia

Throughout the early history of diesels, they were always fed by a mechanical pump with a furl separate chamber for each cylinder, feeding separate fuel lines and individual injectors. To find out more about what makes direct injection engines more efficient, move on to the next page.

There are several competing objectives such as:. 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.

On petrol engines, fuel injection replaced carburetors from the s onward. Fuel is transported from the fuel tank via fuel lines and pressurised using fuel pump s.

This works much like the spray nozzle of a hoseensuring that the fuel comes out as a fine mist. As the piston ascends once more, it squeezes compresses the fuel-air mix until it is nearly nine times as dense as it was to begin with.

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The limited production Chevrolet Cosworth Vega was introduced in March using a Bendix EFI system with pulse-time manifold injection, four injector valves, an electronic control unit ECUfive independent sensors, and two fuel pumps. When the solenoid is not activated, the spring forces the needle valve into the nozzle passage and prevents the injection of fuel into the cylinder. This was a “port” injection where the injectors are located in the intake manifold, very near the intake valve.

Bosch superseded the D-Jetronic system with the K-Jetronic and L-Jetronic systems forthough some cars such as the Volvo continued using D-Jetronic for the following several years.

NY State Journal of Medicine. Inone of the first Japanese designed cars to use mechanical fuel injection was the Daihatsu Compagno. knjection

This is basically a short-term reservoir that keeps the fuel-supply pressure constant and also irons out the pulses of fuel coming up from the pump. By using this site, you agree to the Terms of Use and Privacy Policy.

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.

Retrieved from ” https: Fuel injection is the introduction of fuel in an internal combustion enginemost commonly automotive enginesby the means of an injector. The control unit is fed by a constant-pressure fuel pump.

Direct Injection Basics | HowStuffWorks

The circumferential velocity component is first generated as the propellant enters through helical or tangential inlets producing a thin, swirling liquid sheet. The most common automotive continuous injection system is Bosch’s K-Jetronicintroduced in The injector simply acts as a spray nozzle to break up the fuel into a fine spray – it doesn’t actually control the fuel flow. It works, but from an engineering standpoint, it injectin much to be desired, and it’s pretty wasteful.

How Gas Compression-ignition Engines Work.

How Direct Injection Engines Work

The Bosch fuel injectors were placed into the bores on the cylinder wall used by the spark plugs in other Mercedes-Benz six-cylinder engines the spark plugs were relocated to the cylinder head.


Components Propeller governor Propeller speed reduction unit Spinner. All diesel engines with the exception of some tractors and scale model fel have fuel injected into the combustion chamber.

This little bang injeection the piston back down with tremendous force, causing it to turn the crankshaft and ultimately send power to the wheels. More precise fuep of the fuel injection event injrction enables better control of emissions.

As well as improved control over fuel flow, the electronic system also operates at lower pressure than a mechanical system – usually at around psi. 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.

This ensures that the fuel is well mixed with the air before it enters the chamber. 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 ]. Each injector contains a spring-loaded valve that is kept closed by its spring pressure. Journal of the American Medical Association. Direct fuel injection costs more than indirect injection systems: The solenoid lifts the needle e57 from the s57 seat, and fuel under pressure is sent in the engine cylinder.

A fuel pump sends the petrol to the engine bay, and it is then injected into the inlet manifold by an injector. Later closed-loop fuel injection systems improved the air—fuel mixture control with an exhaust gas oxygen sensor.

How a fuel injection system works

This approach required additional sensors to measure the atmospheric pressure and temperature, to ultimately calculate “air mass”. The fuel then squirts out into the fiel port in the cylinder head. It is heated so much by compression that atomized fuel injected at the end of the compression stroke self-ignites.

There is either a separate injector for each cylinder or one or two injectors into the inlet manifold. The Electrojector patents were subsequently sold to Bosch.