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: Akilrajas Mukus
Country: Barbados
Language: English (Spanish)
Genre: Marketing
Published (Last): 10 March 2008
Pages: 187
PDF File Size: 19.54 Mb
ePub File Size: 17.24 Mb
ISBN: 566-9-27942-157-5
Downloads: 74548
Price: Free* [*Free Regsitration Required]
Uploader: Vilkis

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 ]. Chevrolet d5 a mechanical fuel injection option, made by General Motors ‘ Rochester Products Divisionfor ijection V8 engine in U. Aircraft piston engine components, systems and terminology. It is then fed straight up pipes to the injectors. These examples specifically apply to a modern EFI gasoline engine.

All this information allows an electronic system to meter the fuel far more accurately than the simple mechanical system, which relies on sensing the airflow alone. May Learn how and when to remove this template message.

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. Before we look inside the direct injection engine, let’s view a quick second in the life of a standard gasoline engine for a more complete look at the gasoline engine, check out How Car Engines Work.


How a fuel injection system works | How a Car Works

By using this site, dd57 agree to the Terms of Use and Privacy Policy. They are often called petrol injection PI for short and the fuel flow is controlled by a mechanical regulator assembly. Power to the People”. Archived from the original PDF on The Hesselman engine was a low compression design constructed to run on heavy fuel oils.

The Mercedes-Benz W Formula 1 racing car engine used Bosch direct injection derived from wartime aircraft engines.

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 Electrojector patents were subsequently sold to Bosch. r57

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. Once the engine has warmed up to a certain temperature, a thermoswitch automatically cuts off the cold-start fudl.

As with continuous injection, timed injection can also be controlled either mechanically or electronically. Mechanical fuel injection was used in the s and s by many manufacturers on their higher-performance sports cars and sports saloons.

Fuel injection

The duration that the injector is open called the pulse width is proportional to the amount of fuel delivered. There ruel either a separate injector for each cylinder or one or two injectors into the inlet manifold. Earlier systems, relying on simpler injectors, often injected into a sub-chamber shaped to swirl the compressed air and improve combustion; this was known as indirect injection.


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. 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 injeciton and individual injectors.

NY State Journal of Medicine. The valve only opens when the fuel is squirted injeftion. The earliest systems were mechanically controlled.

How Fuel Injection Systems Work | HowStuffWorks

Residual pressure can remain in the fuel lines long after an injection-equipped engine has been shut down. At precisely timed intervals, injectkon valves open, corresponding to the different cylinders of the engine.

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 injwction on airplanes. It needs fuel, air oxygen, to be precise and spark in order to operate. Many modern EFI systems use sequential MPI; however, in newer gasoline engines, direct injection systems are beginning to replace sequential ones.

In a common rail system, the fuel from the fuel tank is supplied to the common header called the accumulator. Journal of Propulsion and Power. This is thanks to the increasing reliability and injectipn costs of electronic control systems.