Where are the pollutant control devices of gasoline vehicles located in the car?

Updated on Car 2024-07-06
2 answers
  1. Anonymous users2024-02-12

    Structure and working principle of microcomputer controlled fuel evaporation control system The function of the fuel evaporation control system is to prevent the gasoline vapor evaporated in the automobile fuel tank from being discharged into the atmosphere. It is composed of a steam ** tank (also known as an activated carbon tank), a control solenoid valve, a steam separation valve and the corresponding steam pipeline and vacuum hose. The vapor separation valve is installed on the top of the fuel tank, and the gasoline vapor in the fuel tank enters the vapor ** tank through the pipe through the outlet of this valve.

    The purpose of this valve is to prevent the fuel in the fuel tank from leaking out of the vapor pipe when the car is overturned. The steam ** tank is filled with activated carbon particles, so it is also called activated carbon tank. Activated carbon can adsorb gasoline molecules in gasoline vapor.

    When the gasoline vapor in the fuel tank enters the vapor ** tank through the vapor pipeline, the gasoline molecules in the vapor are adsorbed by activated carbon. Another outlet above the vapor** tank communicates with the engine intake manifold via a vacuum hose. There is a solenoid valve in the middle of the hose to control the opening and closing of the line.

    When the engine is running, if the solenoid valve is opened, under the action of vacuum suction of the intake manifold, fresh air will enter from under the vapor canister, and then enter the engine intake manifold of the hose from the outlet of the steam tank after the activated carbon, and send the gasoline molecules adsorbed on the activated carbon (re-evaporated) into the engine for combustion, so that it can be fully utilized; The activated carbon in the vapor** tank then restores its adsorption capacity and will not fail due to too long use. The amount of fuel vapor entering the intake manifold must be controlled to prevent disruption of the normal mixture composition. This control process is realized by the microcomputer according to the operating parameters such as water temperature, speed, throttle opening, etc., and controls the opening and closing of the solenoid valve by manipulating.

    When the engine is shut down or idling, the microcomputer closes the solenoid valve, and the fuel vapor escaping from the tank is absorbed by the activated carbon in the vapor** tank. When the engine is running at medium and high speeds, the microcomputer opens the solenoid valve, and the gasoline vapor stored in the vapor ** tank is sucked into the engine after passing through the vacuum hose. In this case, because the engine has a large air intake, a small amount of fuel vapor does not affect the composition of the mixture.

  2. Anonymous users2024-02-11

    Diesel vehicle pollution control devices mainly include the following:

    Particulate Trap (DPF): Used to capture and reduce particulate matter (PM) emissions in diesel vehicle exhaust, reducing the impact of PM on the environment and human health.

    Nitrogen Oxide (NOx) Adsorption Reduction System (LNT): It is used to reduce NOx emissions in diesel vehicle exhaust by adsorbing NOx and reducing it to nitrogen and water under certain conditions.

    Urea Selective Catalytic Reduction System (SCR): It is used to reduce NOx emissions in diesel vehicle exhaust, by adding urea water-soluble Qisui liquid to the exhaust gas, so that it reacts with NOx in the SCR catalyst to convert NOx into nitrogen and water vapor.

    Cooling exhaust gas recirculation system (EGR): It is used to reduce NOx emissions in diesel exhaust gases by reintroducing a part of the exhaust gases into the engine combustion chamber to reduce the high temperature and high pressure during combustion, thereby reducing the generation of NOx.

Related questions
What to do if a gasoline car mistakenly adds diesel, what to do if a gasoline car mistakenly adds a
16 answers2024-07-06

You should be careful when refueling to avoid the wrong refueling. However, if the wrong oil is really added, the owner should clean it up immediately, and never use it in the wrong way to avoid damage to the vehicle. The following is a collection of solutions to the wrong fuel in the car, welcome to read. >>>More

Why are diesel cars stronger than gasoline cars?
11 answers2024-07-06

Gasoline cars are ignited by spark plugs, diesel cars are compression-ignited, gasoline cars are fast-accelerating, diesel cars are powered, in contrast, diesel cars are more fuel-efficient.

Why can't gasoline cars be filled with diesel?
17 answers2024-07-06

There are many different types of cars. However, it can be mainly divided into two categories: gasoline vehicles and diesel vehicles. It seems that it has become a common practice that gasoline cars can only be filled with gasoline, and diesel cars can only be filled with diesel. But why is that? >>>More

Is the Zotye 5008 a diesel or gasoline car
2 answers2024-07-06

When it comes to today's automobile market, it is called a fire, and the main reason for the fire is probably the price reduction. In the uproar of price reduction, the car dream of countless families seems to be getting closer and closer. However, there are also headaches, gasoline prices have continued to rise, oil prices have hit record highs, and the problem of fuel consumption has become one of the top considerations for consumers today. >>>More

Which is better, diesel or petrol? Is a diesel or petrol car better?
12 answers2024-07-06

Traditionally, due to the different structures of gasoline engines and diesel engines, gasoline engines often belong to high-speed engines, which are faster in the long run, while diesel engines are low-rpm and high-torque engines, which are generally used for trucks, etc., but now each engine has developed greatly, so their respective advantages and disadvantages are not very obvious.