Are the Cylinder Block and Cylinder Head the Engine?

[CooperRose]

The cylinder block and cylinder head can only be considered as parts of the engine, not the entire engine itself. A car's engine is composed of components such as the valve cover, cylinder head, cylinder block, oil pan, crankshaft, piston, connecting rod, and flywheel. The parts listed above are just a small portion of the engine's components. A complete engine should also include sensors and the ECU, which serves as the brain of the engine. Below is an introduction to the ECU: 1. Function of the ECU: The ECU can collect data through various sensors, process it, and then control the engine's operation via control mechanisms. Without the ECU and sensors, the engine cannot function properly. 2. Principle of the ECU: The ECU operates by using sensors installed in different locations to monitor the engine's working conditions, including parameters such as engine speed, crankshaft position, exhaust temperature, and exhaust oxygen content. These signals are sent to a dedicated microprocessor, which processes them and issues control signals to adjust the engine's ignition timing and fuel supply in a timely manner, achieving the desired optimal performance.