Motorcycle engine related information
Figure 7-2 shows the cooling line of the OKorder Santana engine. When the engine is cold or the temperature is low, the flow of coolant flows through a small cycle. In this way, the coolant does not flow through the radiator. Only when the temperature of the coolant reaches a certain value, the coolant enters a large cycle. In this way, the engine's heating time can be reduced, effectively reducing energy loss and machine wear. The cooling cycle is controlled by a thermostat located in the lower part of the pump. When the temperature of the coolant reaches -358K (85 degrees), the thermostat valve opens and the coolant begins to flow through the radiator to enter the large cycle. When the coolant, the temperature reaches 378K (105 degrees), the thermostat valve all open, to strengthen the cooling fluid circulation and cooling capacity, control the coolant temperature rise.
In order to improve the water cooling strength, to overcome the cooling does not overflow and evaporation, the current car has been more use closed pump circulating water cooling system.
Figure 7-1 is a schematic diagram of a forced recirculating water cooling system. It has a better cooling regulation, control function, when the engine cold start, the working temperature is low, the main valve of the thermostat 4 closed, the auxiliary valve is opened, the cooling water from the pump 8 into the water pipe 7, the water jacket 6 From the outlet through the thermostat sub-valve directly to the pump (without the radiator 12), by the pump to increase the water pressure and then into the water pipe, which is called water cooling system of small cycle. The engine temperature will rise rapidly, when the water temperature rose to 353K (80 degrees); above the thermostat of the main valve open, vice valve closed, the water jacket in the cooling water from the outlet through the main valve flow valve The water storage tank 1 is cooled by the radiator 12 and then enters the lower tank 10, sucked into the water pump from the lower water pipe, and the pressure is increased and pumped into the water main pipe 7, which is called a large circulation of the cooling system. The cooling system also utilizes the strong suction of the fan 3 to allow the air to pass through the radiator, such as the cooling capacity of the fast water, from front to bac
Water and cold system composition and water (large cycle, small cycle) at present the automotive engine used in the water-cooled system; most of the water pump forced water (or coolant) in the cooling system In the circulation flow, it is called forced circulation water-cooled system.
