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Do you know the several structures of the engine block? Let's take a look
The engine is the main source of power for automobiles, engineering machinery, and other mechanical equipment. The cylinder block is the main body of the engine, connecting various cylinders and crankshafts as a whole. It is the supporting framework for installing pistons, crankshafts, connecting rods, and other components and accessories.
The structure, shape, and appearance of the cylinder body are diverse in color, with a large number of machined end faces and holes, and uneven wall thickness. The machining accuracy requirements are high. At the same time, high-quality cylinder bodies need to have sufficient strength, good pouring and cutting ability. Currently, mainstream powertrain generation enterprises use automated machine tools, robotic arms, vision and other automated equipment for production and transportation to ensure product processing accuracy and consistency, and save labor costs, Improve the production efficiency of the production line.
The power source of a car is the engine, and the power of the engine comes from inside the cylinder. Most cars have four and six cylinder engines. Since the power of the engine mainly comes from the cylinders, is it better to have more cylinders? Actually, as the number of cylinders increases, the components of the engine also increase accordingly, making the structure of the engine more complex. This also reduces the reliability of the engine, and also increases the manufacturing cost and maintenance cost of the engine in the later stage. Therefore, the number of cylinders in a car engine is a comprehensive choice made based on the purpose and performance requirements of the engine. The V12 engine, W12 engine, and W16 engine are only used on a few high-performance cars.
Inline engine: All cylinders are arranged side by side in a plane, with a simple cylinder block and crankshaft structure. It also uses a cylinder head, which has low manufacturing cost, high stability, good low-speed torque characteristics, low fuel consumption, compact size, and wide application. Its disadvantage is low power.
V-type engine: An engine in which adjacent cylinders are arranged at a certain angle to form a plane with two sets of cylinders at an angle, and the cylinders appear in a V-shaped shape when viewed from the side. The height and length dimensions of the V-type engine are small, making it more convenient to arrange on a car. It is easy to increase displacement and power by expanding cylinder diameter and is suitable for higher cylinder numbers. At present, many domestic mid size models use V-type 6-cylinder engines, such as the Regal, Passat, and Audi A6.
Horizontal opposed type: The engine pistons are evenly distributed on both sides of the crankshaft and move left and right in a horizontal direction.
Horizontal alignment reduces the overall height and length of the engine, reduces the center of gravity of the vehicle, and makes driving smoother. The engine is installed on the centerline of the vehicle, and the torque generated by the pistons on both sides offsets each other, greatly reducing the vibration of the vehicle during driving. The engine speed is greatly increased, reducing noise.
V-shaped cylinder structure
In fact, a V-shaped engine, in simple understanding, is a combination of adjacent cylinders at a certain angle, which looks like a V-shaped engine from the side. Compared to the inline engine, the V-type engine has a reduced height and length, which can lower the hood and meet aerodynamic requirements. The cylinders of the V-type engine are arranged at an angle opposite to each other, which can counteract some of the vibration. However, the disadvantage is that two cylinder heads must be used, and the structure is relatively complex. Although the height of the engine has decreased, its width has also increased accordingly, making it difficult to install other devices in the fixed space of the engine compartment.
W-shaped cylinder structure
Stagger the cylinders on both sides of the V-type engine at a small angle to create a W-type engine. The advantage of a W-type engine compared to a V-type engine is that the crankshaft can be shorter, the weight can be lighter, but the width also increases accordingly, and the engine compartment will be filled more fully. The disadvantage is that the structure of the W-type engine is divided into two parts, which is more complex and can cause significant vibration during operation,
