对于电喷车而言，   免拆清洗时勿贪便宜目前市场上普遍采用的免拆清洗机清洗方式。其清洗是按喷油嘴的数量进行收费，一般一瓶清洗剂可以洗4个喷油嘴。需要注意的各种清洗剂的热值是不同的另外由于其中化学添加剂的差别，劣质清洗剂在清洗过程中，会对喷油器的密封圈、三元催化剂造成一定损害，而且长时间清洗对发动机的相关零部件有利。

For EFI vehicles, do not be greedy for cheap when cleaning without dismantling. At present, the cleaning method of non disassembly cleaning machine is widely used in the market. The cleaning is charged according to the number of fuel injection nozzles. Generally, a bottle of cleaning agent can wash 4 spray nozzles. The calorific value of various cleaning agents that need to be noted are different. In addition, due to the difference of chemical additives, inferior cleaning agents will cause certain damage to the sealing ring of fuel injector and three-way catalyst in the cleaning process, and long-time cleaning is beneficial to the relevant parts of the engine.

目前市场上的免拆清洗有三种：清洗剂清洗、免拆清洗机清洗和超声波清洗机。

At present, there are three kinds of non disassembly cleaning on the market: cleaning agent cleaning, cleaning machine cleaning and ultrasonic cleaning.

把清洗剂直接加入油箱里进行清洗

Add the cleaning agent directly into the oil tank for cleaning

只需要将合适的清洗剂加入油箱即可。但是目前市场上的清洗剂品种繁多，   此种方法简便易行。且规格不一，质量差的清洗剂由于热值不同（一般都会偏大，燃烧时的温度和压力比汽油混合气燃烧时要高，部件接受的热负荷与机械负荷会增大）清洗过程中，容易对进排气门、活塞、缸壁产生损害。

Just add the right cleaning agent to the tank. However, there are many kinds of cleaning agents on the market, so this method is simple and easy to operate. In addition, the cleaning agents with different specifications and poor quality are prone to damage the intake and exhaust valves, pistons and cylinder walls during the cleaning process due to different calorific values (generally, the temperature and pressure during combustion are higher than that of gasoline mixture combustion, and the thermal load and mechanical load of components will increase).

清洗过程因为要洗掉缸内的积碳，   方面。所以尾气排放肯定会暂时超标，清洗效果越明显，其排放的尾气浓黑剧烈，同时说明缸内的积碳已被大部分清洗掉了

 the cleaning process because to wash away the cylinder carbon, environmental protection. Therefore, the exhaust emission will certainly exceed the standard temporarily. The more obvious the cleaning effect is, the more black the exhaust will be. At the same time, most of the carbon deposits in the cylinder have been cleaned

免拆清洗机清洗

Cleaning without disassembly cleaning machine

用清洗剂替代油料燃烧对缸内的积碳进行清洗，   免拆清洗机清洗的原理就是利用发动机本来系统的压力及循环网络。然后借排放系统排出。免拆清洗机的优点在于方便快捷，而且对于喷油嘴的清洗效果明显；缺点是进气道的前一段清洗不到而且喷油嘴的好坏也检查不出来。对于新车而言，其清洗效果一般可以达到80%左右，旧车”没有依照一定里程进行经常清洗的效果稍差，但洗后百的效果还是很明显的

The principle of the cleaning machine is to use the pressure and circulation network of the original system of the engine. It is then discharged by the discharge system. The advantage of the cleaning machine is that it is convenient and fast, and the cleaning effect of the fuel injection nozzle is obvious; the disadvantage is that the front section of the intake port can not be cleaned and the quality of the fuel injection nozzle can not be checked out. For new cars, the cleaning effect can generally reach about 80%. The effect of "old cars" is not as good as that of "old cars" which are not cleaned regularly according to a certain mileage, but the effect after washing for 100 km is still very obvious

超声波清洗机

ultrasonic cleaning

与用清洗机不同，   一般这种清洗的费用较高。要拆下喷油嘴。其优点在于，可以用超声波对喷油嘴有无雾化、响应水平、开关灵敏度、否漏油等进行检测。但其同样也存在缺点，由于在清洗过程中喷油嘴的电磁阀不动，阀芯的针孔不容易被清洗到目前新款的超声波清洗机，也可以给阀芯加上交流电，让其打开并通过眼芯往复运动，对阀芯的清洗效果比拟好。

Different from cleaning machine, this kind of cleaning cost is higher. To remove the fuel injection nozzle. The advantage of this method is that ultrasonic can be used to detect whether the nozzle has atomization, response level, switch sensitivity and whether there is oil leakage. However, it also has disadvantages. Because the solenoid valve of the nozzle does not move during the cleaning process, the pinhole of the valve core is not easy to be cleaned. The new ultrasonic cleaning machine can also add alternating current to the valve core to make it open and move back and forth through the eye core, which has a better cleaning effect on the valve core.