①水箱百叶窗没有及时打开,散热不良;②发动机冷却水不足;③风扇装反,风扇皮带不紧,叶轮打滑;④冷却水箱或发动机水套内水垢过厚;⑤节温器失灵,冷却水不进行大循环;⑥水泵泵水能力降低,冷却水循环速度降低;⑦点火时间过晚,使过多的热量传给冷却水;⑧混合气过稀,燃烧速度缓慢,大量的热传给冷却水;⑨寒冷地区水箱因结冰使冷却水不循环。 现举一例分析如下:有一台CA-10B型汽油发动机在工作中“开锅”。经检查,百叶窗全部打开,冷却水充足,风扇皮带紧度正 ① tank shutter does not open in time, poor heat dissipation; ② lack of engine cooling water; ③ fan mounted anti-fan fan belt is not tight, slippery impeller; ④ cooling tank or engine water jacket scale too thick; ⑤ thermostat failure, cooling water is not Large cycle; ⑥ pump pump water capacity decreased cooling water circulation speed reduction; ⑦ ignition time is too late, so that too much heat to the cooling water; ⑧ mixture too dilute, burning speed is slow, a lot of heat to the cooling water; ⑨ Cold water in the cold area will not circulate the cooling water. Here is an example analysis is as follows: There is a CA-10B-type gasoline engine in the work of “boil.” After examination, louvers all open, sufficient cooling water, the fan belt tightness is positive