The role of the throttle valve of the automobile engine

The function of the throttle valve is to control the speed of the engine;

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

The throttle is installed on the engine, which is used to control the amount of oil entering the cylinder combustion (commonly known as the throttle), the larger the opening, the more fuel mixture enters the cylinder, the higher the engine speed, and the opening of the throttle is changed, so as to control the engine speed; The transmission is installed between the engine and the transmission system of the wheels, and is used to transmit the power of the engine and change the transmission ratio between the engine and the wheels (in layman's terms, torque).

If you don't want a transmission, only use the throttle (throttle) to control the speed of the vehicle, the throttle is fast and fast, the maximum driving speed of the vehicle is equal to the maximum opening of the throttle, which not only wastes a lot of engine power resources, but also fails to meet the ideal speed requirements.

For example, when you step on a bicycle, you need to use a lot of force to make the car run, and when the speed of the car gradually gets faster, with a certain inertial force, you can keep the car moving forward at a certain speed more easily and effortlessly without such a large force.

The car is also a reason, just start the need to consume a large amount of engine power, through the transmission, can have a more torque of the engine to transmit, so as to effectively drive the wheels, when the car moves to a certain speed, gradually increase the gear (through the size of the gear to change the transmission ratio), the engine does not need to maintain the high speed of the throttle, but properly maintain a certain throttle (throttle) opening, you can make the car maintain a certain speed forward, that is to say, the car does not need to open the throttle to the maximum, can reach a comparable speed. In this way, not only the power resources of the engine are fully and reasonably and skillfully utilized, but also a lot of fuel can be saved and the mechanical wear of the engine can be reduced.

A valve that controls the flow of fluid by changing the throttle section or throttle length. If the throttle valve and the check valve are connected in parallel, they can be combined to form a one-way throttle valve.

Throttle valve and one-way throttle valve are simple flow control valves, in the hydraulic system of the quantitative pump, the throttle valve and the relief valve can be combined to form three types of throttle speed regulation system, namely the inlet throttle speed regulation system, the return oil throttle speed regulation system and the bypass throttle speed regulation system.

The throttle valve does not have a negative flow feedback function, which cannot compensate for the speed instability caused by load changes, and is generally only used in situations where the load change is not large or the speed stability is not required.

Installation and maintenance

Attention should be paid to the following matters in the installation and maintenance of throttle valves:

The valve is frequently operational, so it should be installed in a location that is easy to operate.

When installing, it should be noted that the direction of the medium is consistent with the direction of the arrow marked on the valve body.

1.Mechanical impurities in the oil or gum, asphalt, carbon slag and other dirt precipitated due to oxidation are accumulated in the throttling gaps.

2.Due to the aging or extrusion of the oil to produce charged polarized molecules, and there is a potential difference on the metal surface of the throttle gap, the polarized molecules are adsorbed to the surface of the gap to form a firm boundary adsorption layer, the thickness of the adsorption layer is generally 5 8 microns, thus affecting the size of the throttle gap. When the above accumulation and adsorbate grow to a certain thickness, it will be washed away by the liquid flow and then reattached to the valve port.

In this way, the cycle is repeated, and the pulsation of the flow is formed.

3.When the pressure difference between the valve port is large, the degree of extrusion of the liquid is enhanced due to the high temperature of the valve port, and the potential difference is formed on the metal surface by friction, so it is easy to cause blockage when the pressure difference is large.

Gasoline engine throttle valve, also known as throttle valve, is used to control the intake flow, in fact, with the throttle is the same meaning, when you step on the throttle, the throttle valve will open, the deeper you step on, the larger the opening, the more air intake, the electronic control unit calculates the required amount of fuel injection according to the air intake, in order to ensure that the engine has sufficient power output. If you don't understand, you can jia me wei core, the same nickname.

The throttle valve is generally the name of the throttle on the aircraft, and it should be the throttle valve in the car, which is used to control the air intake and is directly connected to the accelerator pedal.

This is to control the size of the traffic! Are you the throttling of the **? It's a throttle.

The throttle valve can play a role in controlling the flow of fluid, generally speaking, when the pressure difference of the throttle valve is constant, the size of the opening affects the change of liquid flow, so what is the main role of the throttle valve? Let me take you to find out.

1. The role of interception and speed regulation. The shut-off valve changes the flow rate by controlling the throttle section or length, which is the main role and function of the throttle valve.

2. Play the role of load resistance. The throttle valve can also play a certain role in load, which is only part of the function of the throttle valve, and the main role of the throttle valve is still throttle speed regulation.

3. The role of pressure buffering. The throttle valve can play a role in pressure cushioning the fluid, and when the fluid flows through the throttle valve, the throttle valve can hinder the operation of the fluid to a certain extent to reduce the impact force.

1. Exhaust throttle: exhaust throttle sail skin valve.

After the exhaust throttle, the reversing valve is reversed, and the check valve on the inlet side of the cylinder is adopted.

Open, quickly inflate the rodless cavity of the cylinder, and the gas in the rodless cavity can only be exhausted through the throttle valve on the exhaust side. By adjusting the opening speed of the throttle valve, the speed of movement of the cylinder can be changed. In this control mode, the piston runs stably and is the most commonly used circuit.

Exhaust throttling should be used for double-acting cylinders. Hydraulics of electric jacks.

The throttling method of mid-spin zone cracking is selected according to the actual situation of the customer.

2. Intake throttling: After the intake throttle speed regulation is adopted, the check valve on the inlet side is closed, and the check valve on the exhaust side is opened. The inlet flow is small, the inlet chamber pressure rises slowly, the exhaust is rapid, and the exhaust chamber pressure is very low.

The piston is mainly driven forward by the expansion of compressed air, so it is difficult to control the speed of the cylinder to achieve stability in this throttling method. It is generally used for single-acting cylinders, clamping cylinders and low friction.

The cylinder and other speed control stupid car closed.

Cruzeon the cylinder blockThrottle valvesOne of the functions is to adjust the feed rate, and the other is to adjust the return speed. The speed of the cylinder can be achieved by adjusting the flow rate of the inlet air, such as the regulating valve, throttle valve, etc., if different speeds are required, multiple air paths can be used, and the combined output of the control of multiple air paths can achieve a variety of cylinder speeds.

The role of the throttle valveAutomobile throttle valve is also known as throttle valve, its function is to control the intake flow, the larger the opening, the larger the air intake, Qifan electronic control unit according to the air intake calculation.

The amount of fuel injected is required to ensure that the engine has enough power to be closed, and the output throttle valve is a valve, throttle and check valve that controls the flow of fluid by changing the flow section or throttle length of the throttle.

Connected in parallel to form a one-way throttle valve, the throttle valve and the one-way throttle valve are simple flow control valves.

The function of the throttle valve is to control the flow of fluid by changing the throttle section or throttle length of the throttle buster.

When the flow of air in the pipeline is lower than that of the throttle valve, the air will be cut off when the air passes through the throttle valve; When the flow of air in the pipeline is greater than that of the throttle valve, the air is drawn into the throttle valve for further use.

Throttle valve is divided into hydraulic pressure gauge throttle valve and Zhinian pneumatic pressure gauge throttle valve, in the industrial control system, the hydraulic pressure gauge throttle valve is used to regulate the flow and pressure of air and water, is a control element commonly used in industrial production, it can be used to control the speed and pressure of the fluid through the pipeline according to the need, to ensure the normal progress of the production process.

Precautions for installation and maintenance of throttle valves

For the sake of ease of operation, attention should be paid to the flow direction of the medium during installation. Under the same pressure, the flow rate of the control valve is negligible compared with other valves, but the flow range required by the project should be considered in the project. The valve is installed in a horizontal pipe, and if the centerline of the valve body is asymmetrical, it should be placed in a symmetrical position for use.

The long-term use of the throttle valve will lead to parts wear, leakage and other problems, so it is necessary to carry out regular maintenance, regularly clean the inside of the throttle valve, maintain the surface finish of the parts, and check whether there is looseness, wear, etc., replace the parts if necessary, check and maintain the sealing performance of the throttle valve in time, if the leakage problem is found, it should be dealt with immediately.

The above content reference: Encyclopedia - throttle valve.