.
1 fuel supply system
Introduction:
Task gasoline engine fuel supply system is in accordance with the requirements of different operating conditions of the engine to prepare a certain number and concentration of the combustible mixture for the cylinders, so that in the near end of the compression ignition combustion is a two expansion work. Finally, the system should supply the products of combustion mdash; mdash; exhaust gas into the atmosphere.
Gasoline fuel supply system:
Gasoline combustion mode:
Task gasoline engine fuel supply system is gasoline through the atomization and evaporation (vaporization) and when a certain proportion of air and homogeneously mixed into the combustible gas mixture, and then according to the requirements of different engine operating conditions, the supply of different mass (i.e., at different concentrations) and various amounts of combustible mixture into the engine cylinder, so as to compress the end of the adjacent ignition combustion gas generate heat expansion work, the last cylinder in the exhaust gas to the atmosphere.
It gasoline fuel supply system are: carburetor fuel supply system; gasoline injection fuel supply system; LPG fuel supply system as well as other mixed fuel supply system. Carburetor fuel supply system is a conventional gasoline feeding system is still widely used, and the fuel injection fuel supply system on a gasoline engine using universal. Gasoline working stroke:
There are 4-stroke gasoline engine, namely: intake, compression, for power and exhaust.
operates as follows:
intake: the intake air in the atmosphere gas is sucked into the cylinder, while the injected fuel;
Compression: The intake air and fuel together compressed, so that the compression ratio and the temperature reaches a certain level;
do work: in the extreme compression, ignition by a spark plug, the compressed gas is combusted with fuel confused, so that the cylinder pressure is increased rapidly, the piston is driven back.
exhaust: is combusted when the working gas, primarily carbon dioxide discharged to the atmosphere.
by the four strokes, in order to achieve reciprocation of the engine.
The diesel fuel supply system:
function of the fuel supply system of the diesel engine is: constantly supplied to the engine through the fuel filter and clean the air, according to the requirements of different working conditions diesel , the amount of diesel fuel at a certain pressure and timing of injection mass injected into the combustion chamber, and combustion rapidly mixing it with air for the combustion exhaust gas discharged after the power cylinders.
The diesel fuel supply system main components and functions:
The diesel fuel supply system is mainly composed of the fuel supply means, air supply means, a mixed gas forming means and an exhaust gas discharge means four parts.
1. The main function of the fuel supply device is completed storing fuel, filtration and the transport operation, and a constant injection pressure and quality, timing, quantity of fuel to be injected into the combustion chamber. .
The main function of air supply means 2 is supplied to the engine clean air;.
3 Diesel Engine Mixture forming apparatus is the main function of the combustion chamber so that the fuel is mixed with air to form a mixture.
4. The main function of the exhaust gas discharge device is discharging the combustion exhaust gas within the cylinder after the completion of the engine for power.