The water cooling system is also equipped with a water temperature sensor and a water temperature gauge. The water temperature sensor is installed at the outlet pipe of the cylinder head to transmit the water temperature of the outlet pipe to the water temperature gauge. Operators can use a water temperature gauge to constantly understand the working condition of the cooling system, and the normal working water temperature is generally between 80 and 90 ℃. Cooling liquid and anti cooling liquid: The cooling liquid used in diesel engines should be clean soft water. If hard water is used, the minerals in it will precipitate at high temperatures, adhere to pipes, water jackets, and radiator cores, forming scale, reducing heat dissipation capacity, easily causing the diesel engine to overheat, and also poisoning the radiator core, accelerating the wear of the water pump impeller and pump casing. For hard water with a high content of minerals, it needs to undergo softening treatment before being added to the cooling system. The commonly used method for softening hard water is to add 0.5-1.5g of sodium carbonate or 0.5-0.8g of sodium hydroxide to 1L of water. After the generated impurities settle, clean water from above is taken and injected into the cooling system

The diesel engine cylinder head and cylinder block are both cast with cooling water jackets. After being pressurized by the water pump, the coolant enters the cylinder water jacket through the water distribution pipe. As it flows, it absorbs the heat from the cylinder wall, increases in temperature, and then flows into the cylinder head water jacket. It enters the water pipe through the thermostat and radiator and enters the radiator. At the same time, due to the rotation and suction of the fan, air is blown through the radiator core, causing the heat of the coolant flowing through the radiator core to continuously dissipate into the atmosphere and reduce the temperature. Finally, after being pressurized by the water pump, it flows into the cylinder water jacket again, continuously circulating, and the diesel engine speed increases. In order to ensure uniform cooling of the front and rear cylinders of a multi cylinder diesel engine, a water distribution pipe or a cast water distribution chamber is generally installed in the cylinder body of the diesel engine when the water is too heavy. The water distribution pipe is a metal pipe with a longitudinal thermal water outlet, which is larger from the water pump, so that the cooling intensity of the front and rear cylinders is similar and the overall cooling is uniform.

The diesel engine cylinder head and cylinder block are both cast with cooling water jackets. After being pressurized by the water pump, the coolant enters the cylinder water jacket through the water distribution pipe. As it flows, it absorbs the heat from the cylinder wall, increases in temperature, and then flows into the cylinder head water jacket. It enters the water pipe through the thermostat and radiator and enters the radiator. At the same time, due to the rotation and suction of the fan, air is blown through the radiator core, causing the heat of the coolant flowing through the radiator core to continuously dissipate into the atmosphere and reduce the temperature. Finally, after being pressurized by the water pump, it flows into the cylinder water jacket again, continuously circulating, and the diesel engine speed increases. In order to ensure uniform cooling of the front and rear cylinders of a multi cylinder diesel engine, a water distribution pipe or a cast water distribution chamber is generally installed in the cylinder body of the diesel engine when the water is too heavy. The water distribution pipe is a metal pipe with a longitudinal thermal water outlet, which is larger from the water pump, so that the cooling intensity of the front and rear cylinders is similar and the overall cooling is uniform.