FUEL INJECTION D57 PDF
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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To more easily comply with emissions regulations, automobile manufacturers began installing fuel injection systems in more gasoline engines during the late s.
Direct fuel injection costs more than indirect injection systems: Many diesel engineshowever, use direct injection in which the diesel is injected directly into the cylinder filled with compressed air. Journal of Propulsion and Power. A high-pressure electric fuel pump mounted near the fuel tank pumps fuel at a pressure of psi up to a fuel accumulator.
The earliest systems were mechanically controlled. The injectors through which the fuel is sprayed are screwed, nozzle-first, into either the inlet manifold injecrion the cylinder head and are angled so that the spray of fuel is fired towards the inlet valve.
Later versions of the Rolls-Royce Merlin and Wright R used single point fuel injection, at the time called “Pressure Carburettor”. First, the fuel travels via pump from the fuel tank, through the fuel line and into fuel injectors that are mounted into the engine. 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.
Gasoline fuel injector for Opel Astra F D, 57 hp, station wagon, Price: €
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The flap sits beneath the 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. One solution is to fit twin-carburettors, but these are difficult to tune correctly. Instead, many cars are now being fitted with fuel-injected engines where the fuel is delivered in precise bursts. It needs fuel, air oxygen, to be precise and spark in order to operate.
For cold starting, a choke on the dash or, on later models, a microprocessor control unit injrction a special cold-start injector into operation, which injects extra fuel to create a richer mixture.
How does an electric water pump benefit your engine? Since the early s, almost all gasoline passenger cars injectiln in first world markets are equipped with electronic fuel injection EFI. The system pumps more fuel than is needed for injection – a loop circuit returns the excess to the fuel tank via a pressure regulator which keeps the pressure in the pipes constant.
Engines so equipped are usually more efficient and more powerful than carburetted ones, and they can also fiel more economical, as well as having less poisonous emissions. This is in injectoon to most fuel injection systems, which provide fuel during short pulses of varying duration, with a constant rate of flow during each pulse.
This fuel is then sent through tubing to the injectors, which inject it into the combustion chamber. As well as improved control over fuel flow, the electronic system also operates at lower pressure than a mechanical system – usually at around psi.
Gasoline fuel injector for Opel Astra F 1.7 D, 57 hp, station wagon, 1992
Depending on the system design, the timing of when injectkon opens is either relative each individual cylinder for a sequential fuel injection SFI systemor injectors for multiple cylinders may be signalled to open at the same time in a injwction fire system. Once the engine has injrction up to a certain temperature, a thermoswitch automatically cuts off the cold-start injector. Injectin first appeared on the Porscheand uses a mechanical airflow meter L for LuftGerman for “air” that produces a signal that lnjection proportional to “air volume”.
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.
Automobile emissions control Catalytic converter Diesel particulate filter Exhaust manifold Glasspack Muffler. 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. The control unit is fed by a constant-pressure fuel pump. German direct injection petrol engines used injection systems developed by Bosch from their diesel injection systems.
Each injector contains a spring-loaded valve that is kept closed by its spring pressure. This article includes a list of referencesbut its sources remain unclear because it has insufficient inline citations. A fuel injection system Fuel pump Fuel filter Fuel accumulator Fuel distributor Inlet tract Inlet manifold Injectors Cold-start injector Pip from petrol tank Return pipe to tank A fuel injection system Petrol-engined cars use indirect cuel injection.
Later closed-loop fuel injection systems improved the air—fuel mixture control with an exhaust gas oxygen sensor. On petrol engines, fuel injection replaced carburetors from the s onward.
An electronic system is operated entirely by a microprocessor control unit. This page was injecttion edited on 20 Decemberat Archived from the original on This system was not a “pulse” or intermittent injection, but rather a constant flow system, metering fuel to all cylinders simultaneously from a central “spider” of injection lines.
During the s, other mechanical injection systems such as Hilborn were occasionally used on modified American V8 engines in various racing applications such as drag racingoval racingand road racing. In a continuous injection system, fuel flows at all times from the fuel injectors, but at a variable flow rate.
Propeller governor Propeller speed reduction unit Spinner. Residual pressure can remain in the fuel lines long after an injection-equipped engine has been shut down. 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. Aircraft piston engine components, systems and terminology. The Ultimate 20 hour car mechanics video course Learn everything about modern cars from our new video series.
It’s more common to have single-point injection where a single injector feeds all the cylinders, or to have one injector to every two cylinders. Fuel injection generally increases engine fuel efficiency.