What problems we may confront when using throttle body?

Although throttle body is widely applied in our daily life, and has brought us many benefits, we may still face some problems when using it. Addressing these problems and learning to maintain them in a correct manner help bring the potential of throttle body to the best.

• What problems we may confront when using throttle body?

• What are the advantages of the throttle body?

• How to maintain throttle body?

What problems we may confront when using throttle body?

Mechanical impurities or colloid, asphalt, carbon slag precipitated from oxidation of the throttling body. As the oil is extruded to produce charged molecules, and there is a difference on the surface of the throttling body, the molecules will be adsorbed to the gap surface. So a firm boundary adsorption layer is formed. It is so thick that it can affect the performance of the throttling body. When the above deposits and adsorbates grow to a certain thickness, they will be washed away by the liquid flow and then attached to the valve again. When its pressure difference is large enough, the degree of liquid extrusion will be enhanced. And the metal surface is more vulnerable to friction. Therefore, when the pressure difference is large, it is easy to produce blockage. PCV exhaust gas comes from the combustible mixture in the combustion chamber entering the crankcase through the piston gap and mixing with the engine oil steam. In order to avoid dilution and contamination of engine oil, the mixture will be pumped into the inlet by the positive crankcase ventilation system (PCV) to participate in secondary combustion. After the waste gas enters the inlet, it will condense and form liquid phase due to the decrease of temperature, and the "unstable components" will oxidize and condense at high temperature, forming oil dirt on the surface of throttle body. For turbocharged engines, exhaust gas driving mode is generally adopted, that is, the turbine is driven by the high-pressure exhaust gas generated by the exhaust passage, and the compressor blades in the inlet passage are driven by coaxial to create air flow in the inlet passage. However, under long-term and bad working conditions, the coaxial bearing is easy to result in volatilization of lubricating oil. And the inflation efficiency increases, which is easier to form heavy oil pollution and aggravate the adhesion of deposits in the throttle body. It will block the throttle body.

What are the advantages of the throttle body?

The throttle body can control liquid flow. When the pressure difference of throttle valve is limited, the opening size affects the change of flow. The function of throttle body is similar to the faucet. If there is a large amount of water flowing out, we need to turn it down and there will be less water. The throttle body and the one-way valve can be combined in parallel to form a one-way throttle body. The throttle body has no negative function and cannot compensate for the speed instability caused by load change. It is generally used in occasions with little load change or low requirements for speed stability.

How to maintain throttle body?

It is necessary to maintain the throttle body. If it has not been maintained for a long time, it will be too dirty to use. The gas entering the diesel engine will bring in many residues, which will endanger the normal ignition of vehicle and reduce the output power of diesel engine. If it is more serious, idling and flameout will occur. After the throttle body is cleaned, calibrate the opening of it. If it is not calibrated, the throttle body may stall. Because the relativity of natural ventilation at the throttle body is higher while the temperature is lower, the oil will vapor and mixed carbon in the vapor caused by the operation of diesel engine are very easy to solidify here and produce oil scale. So, it needs cleaning. Otherwise, the acceleration will not be smooth when adding oil.

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