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The fuel being injected was described as being in vapour phase having been heated by the engine cylinder. The pressure of the fuel was regulated at the fuel pump, and the amount of fuel admitted was controlled by mechanical means at the rotary admission valve. It seems this radical design wasn't taken further by F. E. Baker.
As in a carburetted induction system, the fuel is mixed with the air before entering the intake manifold. [15] Single-point injection was a relatively low-cost way for automakers to reduce exhaust emissions to comply with tightening regulations while providing better "driveability" (easy starting, smooth running, no engine stuttering) than ...
Port injection refers to the spraying of the fuel onto the back of the intake valve, which speeds its evaporation. [1] An indirect injection diesel engine delivers fuel into a chamber off the combustion chamber, either a prechamber or swirl chamber, where combustion begins and then spreads into the main combustion chamber. The prechamber is ...
Common rail fuel system on a Volvo truck engine. In 1916 Vickers pioneered the use of mechanical common rail systems in G-class submarine engines. For every 90° of rotation, four plunger pumps allowed a constant injection pressure of 3,000 pounds per square inch (210 bar; 21 MPa), with fuel delivery to individual cylinders being shut off by valves in the injector lines. [1]
It is commonly used in engines with spark ignition that use petrol as fuel, such as the Otto engine, and the Wankel engine. In a manifold-injected engine, the fuel is injected into the intake manifold, where it begins forming a combustible air-fuel mixture with the air. As soon as the intake valve opens, the piston starts sucking in the still ...
Fuel injection allows a precise amount of fuel to suit the amount of air flowing through the engine, making it more efficient. [ 4 ] [ 5 ] [ 6 ] Fuel injection is also used to regulate the horsepower rating of the stock cars, making the sport safer, providing for more fuel efficient vehicles, in addition to cleaning the environment for the ...
This is achieved by compressing the intake air, to increase the mass of the air-fuel mixture present within the combustion chamber. A naturally aspirated engine is limited to a maximum intake air pressure equal to its surrounding atmosphere ; however a forced induction engine produces "boost", [ 3 ] whereby the air pressure is higher than the ...
This produces a homogeneous charge: a homogeneous mixture of air and fuel, which is ignited by a spark plug at a predetermined moment near the top of the compression stroke. In a homogeneous charge system, the air/fuel ratio is kept very close to stoichiometric, meaning it contains the exact amount of air necessary for complete combustion of ...