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Kingteam Precision Hardware's VVT (variable valve timing system) valve core for automobile engines

The VVT spool is a part of the motor and is usually used in the automotive field, especially turbocharged cars. The advantages of turbocharged cars are particularly obvious. Under the premise of the same displacement, the power and torque of the engine can be greatly increased, about 40%, with more complete combustion and better fuel economy.


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The centrifugal compressor and the turbine are combined into a whole, which is called a turbocharger. The main difference between it and the gas turbine is that the unit does not have a combustion chamber and corresponding system. The turbine uses the exhaust energy of a reciprocating internal combustion engine to work, and the compressed air provided by its centrifugal compressor is used as the charge for the reciprocating internal combustion engine. In the turbocharger, the compressor impeller and the turbine are assembled on the same rotating shaft, which is called the rotor. The seals and thrust pieces are placed on the same rotor shaft and rotate together.

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Variable valve timing (VVT, variable valve timing) is a technology used in automobile piston engines. VVT technology can adjust the overlap time and timing (part or all of them) of the engine's intake and exhaust systems, reducing fuel consumption and improving efficiency. The VVT control valve is an oil control valve that controls the valve timing of the engine. The engine system controls the advance or lag of the VVT by controlling the change of the oil passage of the VVT control valve to realize the adjustment of the engine intake and exhaust volume. Make the engine reach the best working condition.

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Shenzhen Kingteam Precision Technology Co., Ltd. provides a lot of precision hardware for the heart of the car and the engine! Before, we introduced Kingteam Precision Hardware's automotive engine intake valve control shaft and VVT (variable timing valve system) valve sleeve. Today we introduce another precision hardware on the car engine: VVT (variable timing valve system) valve core.

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The components of a VVT control valve generally include a valve core, a valve sleeve and an electromagnetic device. The valve core moves in the valve sleeve under the action of the electromagnetic device to achieve oil control.


However, one end of the existing valve core is a hollow oil return hole, and two through holes connected to the oil return hole are also provided on the valve core. These two through holes are used to recover the oil of the variable camshaft phase adjuster. However, the two existing through holes are connected. One of them returns oil when the other is supplied. When one returns oil, the other is inevitably affected. The pressure of the return oil will produce the pressure of the oil supply. As a result, the pressure value of the oil supply pipe is inaccurate, and the adjustment time for the oil pressure in the variable camshaft phase adjuster to reach the required pressure value will increase.


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The production process of this VVT valve core produced by Kingteam Precision mainly includes CNC turning/processing and CNC milling, grinding, precision tolerances on the inner and outer diameter of the hole, and high surface roughness requirements are very high!

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CNC turning or machining and CNC milling are mainly used for cutting inner and outer cylindrical surfaces of shaft parts or disc parts, inner and outer conical surfaces of any cone angle, complex rotating inner and outer curved surfaces, cylindrical and conical threads, etc., and can perform grooving and drilling. Hole, reaming, reaming and boring, etc.

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The material used for this VVT valve core produced by Kingteam Precision is AL6061. 6061-T651 is the main alloy of 6061 aluminum alloy. It has excellent processing performance, excellent welding characteristics and electroplating, good corrosion resistance, high toughness and processing After no deformation, compact material without defects, easy to polish, easy to color film, excellent oxidation effect and other excellent characteristics.

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The surface treatment of this VVT valve core produced by Kingteam Precision is hard anodized. The main purpose of hard anodizing of aluminum alloy is to improve various properties of aluminum and aluminum alloy, including corrosion resistance, wear resistance, weather resistance, insulation and adsorption. It is not only suitable for deformed aluminum alloy, but also for die casting aluminum alloy parts.

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As emission standards become more and more stringent, there will be fewer and fewer large-displacement self-priming engines, gradually embarking on the route of small-displacement turbocharging. Kingteam Precision Hardware's VVT (Variable Valve Timing System) valve core for automobile engines enables more fuel combustion, better fuel economy, and a healthier and more environmentally friendly life for the public!