In the early stage of the engine, the water temperature is very fast; when the water temperature gauge indicates 80, the heating rate slows down, it indicates that the thermostat is working normally. On the contrary, if the water temperature increases rapidly, when the internal pressure reaches a certain degree, the boiling water suddenly overflows, it indicates that the main valve is stuck and suddenly opens. When the water temperature gauge indicates 70 ℃ - 80 ℃, open the radiator cap and radiator drain switch, and feel the water temperature by hand. If both hands are tied, it means that the thermostat works normally; if the water temperature at the radiator water inlet is low, and there is no water outflow or little water flow at the inlet pipe of the radiator upper water chamber, it means that the main valve of the thermostat cannot be opened. If the thermostat is stuck or not closed tightly, it should be removed for cleaning or correction, and should not be used with mercy.
运用沟通法，拆下发动机的空气滤清器，假定此时混凝土搅拌车主张机排出的不是黑烟，那说明是空气滤清器有严重的阻塞，应消弭阻塞或许变换滤芯，变换新的滤芯效果非常好。因为发动机喷油泵和调速器调整不恰当，使油嘴的喷油量太大，逾越了混凝土搅拌车发动机的每个循环喷油数量，或许是有对比严重的后滴油现象等，构成供油量过大。
Using the communication method, remove the air filter of the engine. Assuming that the smoke emitted by the concrete mixer is not black smoke, it means that the air filter is seriously blocked. It is necessary to eliminate the blocking. Maybe it is very good to change the filter element and change the new filter element. Because the fuel injection pump and governor of the engine are not properly adjusted, the fuel injection quantity of the nozzle is too large, which exceeds the fuel injection quantity of each cycle of the concrete mixer engine. Maybe there is a serious phenomenon of post drip, which constitutes the excessive fuel supply.
在装有涡轮增压设备的混凝土搅拌车柴油机，应按混凝土搅拌车修补守则上的涡轮增压设备的缺陷确诊办法间断确诊与清扫，或选用置换法，即换用同类型的涡轮增压器，若沟通后没有黑色烟雾就能够证明混凝土搅拌车柴油机冒黑烟是涡轮增压器损坏所发作的。柴油是碳氢化合物，假定发动机在短少氧气的条件下停息，简单构成停息不充分，不无缺，会导致部分没有无缺停息的碳元素构成游离碳，混入废气排出，导致发作了黑色的烟雾。
The diesel engine of the concrete mixer equipped with turbocharging equipment should be diagnosed and cleaned intermittently according to the defect diagnosis method of the turbocharging equipment in the repair code of the concrete mixer, or the replacement method should be selected, that is, the same type of turbocharger should be used. If there is no black smoke after communication, it can be proved that the black smoke of the diesel engine of the concrete mixer is caused by the damage of the turbocharger. Diesel is a hydrocarbon. Assuming that the engine stops under the condition of short oxygen, the simple composition of stopping is not sufficient, which will lead to the formation of free carbon by some carbon elements without stopping, which will be mixed into the exhaust gas and lead to black smoke.
翻开散热器加水口盖，若散热器内冷却水安静，则标明节温器工作正常，否则，则表明节温器工作异常。这是因为，在水温低于70℃时，节温器胀大筒处于缩短情况，主阀门关闭;当水温高于80℃时，胀大筒胀大，主阀门逐步翻开，散热器内循环水初步活动。
Open the radiator water inlet cap. If the cooling water in the radiator is quiet, it indicates that the thermostat works normally. Otherwise, it indicates that the thermostat works abnormally. This is because, when the water temperature is lower than 70 ℃, the expansion cylinder of the thermostat is in the shortening condition, and the main valve is closed; when the water temperature is higher than 80 ℃, the expansion cylinder is expanded, and the main valve is gradually opened, and the circulating water in the radiator is initially active.
当水温表指示70℃以下时，散热器进水管处若有水活动，水温温热，则表时节温器主阀门关闭不严，使冷却水过早大循环。假定是纤细的脏污，可不必搅拌车车身清洗剂，直接用毛巾擦，当即就能够擦洁净。但假定玻璃上附着的是油膜，用通常的办法很难肃清，这时，需求动用肃清油膜专用的玻璃清洗剂来擦洗，它的效果是能够使油膜不易附在玻璃上。运用玻璃专用清洗产品前，应先清洗车窗，否则清洗效果会打扣头。玻璃清洗剂在干了以后，就像打蜡相同会变白，只需用柔软的布将它拭去即可。
When the water temperature gauge indicates below 70 ℃, if there is water movement at the radiator inlet pipe and the water temperature is warm, the main valve of the thermometer is not closed tightly, which makes the cooling water circulate prematurely. Assuming that it is a fine dirt, you don't need to mix the car body cleaning agent, just use a towel to clean it immediately. But suppose that the oil film is attached to the glass, and it is difficult to clean it with the usual method. At this time, it is necessary to use the special glass cleaning agent to clean the oil film. Its effect is that the oil film is not easy to adhere to the glass. Before using the special cleaning products for glass, the windows should be cleaned first, otherwise the cleaning effect will be compromised. After the glass cleaner is dry, it will turn white just like waxing. Just wipe it off with a soft cloth.
