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Definition and Development History of Excavators Excavators are heavy construction equipment used for digging and excavating materials, such as soil, rock, and debris. They consist of a boom, stick, and bucket, which are controlled by hydraulic systems to perform various digging and loading operations. The history of excavators dates back to the late 19th century, when steam shovels were used for ...
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Excavator classification Excavators come in a variety of types, each designed for different applications and work environments. In this article, we will describe the main types of excavators that are commonly used in construction, mining, and other industries. Crawler Excavator: These excavators have a tracked undercarriage and are designed for rough terrain and muddy or rocky work conditions. The...
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Common faults of excavator Excavators are commonly used in construction sites for digging and moving earth, rocks and other materials. However, like any other machine, excavators are prone to faults and breakdowns, which can result in downtime and losses for the operators. In this article, we will look at some of the common faults of excavators and how they can be prevented or fixed. 1.Hydraulic S...
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The difference between copper radiator and aluminum radiator Copper and aluminum heat sinks are two common types of heat sinks used in various electronic devices for thermal management. Here are some key differences between copper heat sinks and aluminum heat sinks: 1.Thermal Conductivity: Copper has a higher thermal conductivity compared to aluminum. This means that copper can transfer heat more ...
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Definition of diesel engine A diesel engine, also known as a compression-ignition engine, is a type of internal combustion engine that operates on the principle of compression ignition. In a diesel engine, fuel is injected into the combustion chamber at a high pressure. The fuel and air mixture is compressed by the piston, which raises the temperature inside the combustion chamber. This high tempe...
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How many parts are the internal combustion engine product models? What does each mean? An internal combustion engine (ICE) consists of several essential components that work together to generate power. Here are the main parts of an internal combustion engine and their functions: 1.Engine Block: The engine block forms the foundation of the engine and houses various components. It provides support t...
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What is the reason for the engine valve not closing tightly? When engine valves do not close tightly, it can be attributed to several potential reasons: 1.Valve Clearance Issues: Each engine valve has a specified clearance range that allows for expansion due to heat. If the valve clearance is too large, the valve may not close tightly, resulting in a loss of compression. Regular valve clearance ad...
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What is the reason for the unstable engine speed? What is the solution? Unstable engine speed, also known as engine surging or hunting, refers to fluctuations in the RPM (revolutions per minute) of the engine at idle or while driving. There are several potential reasons for this issue, and the solutions can vary depending on the underlying cause. Here are some common causes and possible solutions:...
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Explanation of common sensor performance terms Here are explanations of common performance terms associated with sensors: 1.Accuracy: Accuracy refers to the degree of conformity between the measured value and the true value of the parameter being measured. It measures the sensor's ability to provide measurements that are close to the actual value. Accuracy is typically expressed as a percentage of...
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What are the components of the piston connecting rod group and their functions? The components of a piston connecting rod set typically include the following: 1.Piston: The piston is a cylindrical component that moves up and down inside the cylinder bore. It is responsible for compressing the air-fuel mixture and transferring the combustion pressure to the connecting rod. 2.Connecting Rod: The con...
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Camshaft Introduction The camshaft is an essential component in an internal combustion engine. It is a cylindrical shaft with lobes or cams that control the opening and closing of the engine's intake and exhaust valves. The camshaft is typically driven by the engine's crankshaft through a timing belt or chain. The lobes or cams on the camshaft are carefully shaped to determine the timing and durat...
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What is the function of the crankshaft front oil seal The crankshaft front oil seal, also known as the front main seal, serves an important function in an engine. Its primary role is to prevent oil leaks from the front end of the crankshaft. The seal is located at the front of the engine, where the crankshaft extends out from the engine block. The crankshaft front oil seal creates a tight seal bet...
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