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single camshaft engine,Okx app download also known as SOHC engine (Single Overhead Camshaft engine), is an internal combustion engine design that adopts a single The camshaft drives the valve switch and fuel injection. Compared with twin camshaft engines and DOHC engines, its design is simpler and lighter, but its performance at high speeds is usually limited. In this article, we will have an in-depth understanding of the design, working principle and advantages and disadvantages of the SOHC engine. The design of SOHC engine is relatively simple. Because only one camshaft is used to drive the valve switch, the design of this engine is more simplified than that of a double camshaft engine.The camshaft is generally installed at the top of the cylinder head, and only a small number of accessories are needed to control the valve switch. Unlike twin-camshaft engines, SOHC engines usually have only one valve (each cylinder is designed with only one intake valve and one exhaust valve), which means that they need larger valve horns (also known as valve brackets) to ensure the smooth opening and closing of the valve. In addition, the design of SOHC engines usually includes a separate belt or chain to drive the camshaft. Working principle The working principle of the SOHC engine is similar to other internal combustion engines. Its principle is to mix the fuel with air and burn in the cylinder, drive the piston movement, and then convert the linear motion of the piston into rotary motion through the connecting rod and crankshaft. A single camshaft is located at the top of the cylinder head and is connected to the crankshaft through a gear system.Each valve is connected to the camshaft through a special valve bracket or horn, which means that when the valve is opened, the bump on the camshaft will push the horn away and then open the valve. When the valve is closed, the bulge on the camshaft will leave the horn, and the valve spring will close the valve. The different shapes and positions of the bumps on the camshaft determine when and how long each valve is opened. This design usually uses a separate camshaft to control the intake and exhaust of the cylinder. This design is not only simpler, but also lighter. In addition, due to the lightweighting of its system and the reduction of the number of components, it can provide efficient fuel economy. Advantages and disadvantages The simple design and lightweight of the SOHC engine is one of its most prominent advantages. Compared with the double camshaft engine and the DOHC engine, it has a lower maintenance cost and is easier to repair and maintain.In addition, the design of SOHC engines is usually more energy-saving because it does not require multiple camshafts and valves. Moreover, SOHC engines also have less friction loss than other engines, because they usually have fewer mechanical parts that transmit power. However, compared with twin camshaft engines and DOHC engines, SOHC engines usually perform poorly at high speeds. Since the camshaft is responsible for controlling all valves, this may lead to mutual influence, making some valves unable to fully open at high speeds, thus limiting performance. In addition, the valve designed by SOHC is usually large, which leads to an increase in inertial load at high speeds, which may affect the reliability of the engine. In summary, the SOHC engine is relatively simple in design, low maintenance cost, and more energy-saving, so it is used in many vehicles.However, its performance at high speed is usually limited, so it may not be competent in some application scenarios. When choosing a vehicle, the specific performance and use required by it should be taken into account in order to determine the most suitable engine type.

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