In lubrication system, several filters with the different filtration capacity, i.e. collecting filter and fine filter, are installed in parallel and in series with the main oil passage respectively. Therefore, the filter can be divided into full flow type. The full flow filter, that is, the primary filter, is connected in series with the main oil passage, so all engine oil passes through it. It can filter out impurities with large particle size (diameter more than 0.1mm) in the engine oil, and the filter element is paper. In order to prevent the oil cut-off due to the blockage of the strainer, a bypass valve is installed at the head of the strainer. Once the bypass valve of the strainer is blocked, it can be opened to allow the unfiltered oil to be input into the main oil passage to ensure the lubrication of all parts of the real estate bureau.

风流滤清器即细滤器，细滤器可以滤去直接的0.001mm以上的细小杂质，它和主油道并联，滤芯亦为纸质。机油经细滤器滤清后回到油低壳，由于发动机工作过程中总有一部分机油通过细滤器进行过滤，因此提高了总体滤清效果，延长了机油使用寿命。

The air flow filter is the secondary filter. The secondary filter can filter direct fine impurities above 0.001mm. It is connected in parallel with the main oil passage, and the filter element is also paper. The engine oil returns to the low oil shell after being filtered by the fine filter. Because part of the engine oil is always filtered by the fine filter during engine operation, the overall filtering effect is improved and the service life of the engine oil is prolonged.

全流式滤清器必须与分流式滤清器一起使用，不可只用分流式滤清器代替全流式滤清器。

The full flow filter must be used together with the shunt filter, and the shunt filter cannot be used instead of the full flow filter.

KTTA型柴油机使用的全流式机油滤清器由滤清器座和滤芯组成。滤清器座有三种类型：全流式机油滤清器座；旁通式滤清器座；组合式滤清器座。滤清器座有铝制和铸铁制两种：老式K38型用铝制滤清器座；新式K38型和K50型用铸铁制滤清器座。

The full flow oil filter used in KTTA diesel engine is composed of filter base and filter element. There are three types of filter seats: full flow oil filter seat; Bypass filter base; Combined filter base. Filter seats are made of aluminum and cast iron: old K38 aluminum filter seat; The new K38 and K50 filters are made of cast iron.

全流式机油滤清器座，全部机油从冷却器流到全流式机油滤清器座，经滤芯到柴油机主油道。旁通式机油滤清器座只有部分机油留到旁通式滤清器座和滤芯。组合式机油滤清器座含全流式滤芯和旁通式滤芯。

Full flow engine oil filter base: all engine oil flows from the cooler to the full flow engine oil filter base and to the main oil passage of the diesel engine through the filter element. Only part of the oil in the bypass oil filter base is left to the bypass oil filter base and the filter element. The combined oil filter base contains a full flow filter element and a bypass filter element.

全流式机油滤清器座的组成由压力调节阀、滤清器旁通阀和活塞冷却阀。

The full flow oil filter base consists of a pressure regulating valve, a filter bypass valve and a piston cooling valve.

压力调节阀——保持柴油主油道中的正确的机油压力，并将主油道不需要的机油返回机油道。

Pressure regulating valve - maintain the correct oil pressure in the diesel main oil passage and return the unnecessary oil in the main oil passage to the oil passage.

旁通阀——在机油滤芯中阻力过大时。旁通机油，避免滤芯堵塞时柴油机因缺油而损坏。

Bypass valve - when the resistance in the oil filter element is too large. Bypass the engine oil to avoid damage to the diesel engine due to lack of oil when the filter element is blocked.

活塞冷却阀——控制机油只流向有滤清器座的柴油机一侧。活塞冷却油道有一分开的活塞冷却阀，控制机油流向与有滤清器座相对一侧的活塞冷却出道。

Piston cooling valve - controls the flow of oil only to the side of diesel engine with filter base. The piston cooling oil passage has a separate piston cooling valve to control the oil flow to the piston cooling outlet on the side opposite to the filter base.

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