汽车方面论文英语翻译

汽车方面论文英语翻译内容摘要：

lubrication pump, thermostat, eliminating the pump abnormal noise, protection of copper, aluminum, tin and other metal parts to prolong tank life, to prevent the tank boil The engine work at normal temperature. Clear of Cooling scale measures maintenance: can be 2% caustic soda solution added to the cooling system, making the car driving all released one day after, and then rinse。 then the same caustic soda solution, put the for a day, and finally washed with water . Can also fill with water in the cooling system from the expansion tank outlet add 1kg of soda, car driving day to put the after the engine running at low speed and continue adding water from the filler, you can pletely remove scale. 2, leaking fluid, may have a leak, the water in the cylinder water jacket in the event of leakage, Water temperature gauge, water temperature will rise sharply, such a situation, you must promptly take the necessary measures in order to avoid not the necessary trouble, here to introduce to you Chi Puresistant S530 Cooling stanch agent for repair and protective effect of the cooling system is equivalent to 99 super repair agent and S201, engine repair and protection, to prevent the leakage of the tank, radiator, water pump, thermostat and other parts are unique, it can be used with any coolant blending, and can slow down the cooling system of impurities produce. In general, the cooling system failure, can not be enumerated. Under normal circumstances, you owners should follow such a principle, vehicles, each traveling 1,000 km, it should look at the work of the engine. In addition, the car just stop, can not immediately open the radiator cap in order to avoid burns. Fifth, Cooling System Works The function of the cooling system is to make the engine in any condition to an appropriate degree of cooling, thereby maintaining the appropriate temperature (coolant temperature) work. Chapter Three of the cooling system is characterized by The role of the traditional cooling system is to reliably protect the engine, but should also have a role to improve fuel economy and lower emissions. To this end, the cooling system should consider the following factors: internal engine friction losses。 the power of the cooling system pump。 bustion boundary conditions, such as the bustion chamber temperature, Charge density, charge and temperature. Advanced cooling system uses a systematic, modular design approach, and consider each of the influencing factors, so that the cooling system to ensure that the engine work properly, but also improves engine efficiency and reduce emissions. the temperature set point The limits of the engine operating temperature depends on the maximum temperature of the surrounding area of the exhaust valve. Ideally, the metal temperature than the coolant temperature controlled cooling system, so as to better protect the engine. Cooling temperature set by the cooling system is based on full load cooling rate basis, therefore, the engine and cooling system at part load in less than ideal, such as urban driving and low speed will result in high fuel consumption and emissions . By changing the set point of the coolant temperature can improve the performance of the engine and cooling system at part load. According to the temperature limit of the exhaust valve around the area, you can increase or reduce the set point of the metal temperature of the cooling fluid. Increase or decrease the temperature points have their own characteristics, depending on the desired purpose. to raise the temperature setpoint Increase the temperature set point is a popular method. Increase in temperature has many advantages, it directly affects the formation of engine wear and tear and the effect of the cooling system and engine emissions. Operating temperature will increase the engine oil temperature, reducing engine friction and wear, lower engine fuel consumption. Studies have shown that the engine operating temperature on the friction loss. Coolant discharge temperature to 150℃ , so that the cylinder temperature to 195℃ , fuel consumption decreased by 4% 6%. Coolant temperature will be maintained in the range of 90115 ℃ , so the engine oil temperature of 140℃ , the fuel consumption at part load decreased by 10%. Increase temperature significantly affect the performance of the cooling system. Improve coolant or metal temperature will improve the delivery of the engine and the cooling gas heat transfer effect, lower coolant flow rate, reducing the power rating of the pump, thereby reducing the power consumption of the engine. In addition, can be used in different ways, to further reduce the coolant flow rate. to lower the temperature setpoint Reduce the operating temperature of the cooling system can improve the engine volumetric efficiency, reduce intake air temperature. This bustion process, fuel efficiency and emissions favorable. The lower the temperature set point can save the engine operating costs and increase ponent life. Studies have shown that if the cylinder head temperature is reduced to 50℃ , ignition advance angle is 3176。 in advance A not occurred knock 2% volumetric efficiency, improved engine operating characteristics, helps to optimize the pression ratio and parameter selection to obtain more good fuel efficiency and emissions performance. Chapter Four cooling system overhaul Common cause of engine overheating reasons: the cooling air flow reduction (such as radiators blocking, etc.)。 cooling fan does not work。 low speed uphill, the ambient temperature is too high。 Vbelt is too loose, turn the efficiency is poor。 cylinder scale. thermostat failure, pump damage, thermal switch failure. In order to prevent the coolant temperature is too high,。