卡特彼勒CAT柴油发动机修理技术

卡特彼勒CAT柴油发动机修理技术

Caterpillar CAT diesel engine repair technology

总 述

The total of the

燃油输送泵(7)装在柴油机右边，柴油机下面油泵轴驱动这齿轮式输送泵。来自供油箱的燃油，经过初步过滤，由输送泵抽出送到燃油过滤箱。

Fuel pump (7) installed on the diesel engine on the right, diesel engine oil pump shaft drive below the gear type pump. From the supply tank of fuel, after a preliminary filter, by conveying pump to the fuel filter box.

输送泵有一个止回伐和一个旁通伐。泵件装在管线(9)后面，止回伐装在泵头上，当使用注油泵时，止回伐防止燃油通过输送泵流回去，旁通伐装在输送泵驱动端盖后面，旁通伐限制燃油的最大压力。如果燃油压力上升到860千巴(125磅/吋²)，旁通伐开启将泵的输出端和输入端连通，这样就防止由于太大压力而引起燃油系统损坏。

The pump has a check valve and a by-pass valve. Pump installed in the pipeline (9) behind, check valve installed in the pump head, when the oil pump, check valve to prevent the fuel through the pump flow back, bypass of installed in the pump drive end behind the cover, the maximum pressure by-pass cutting limits of fuel. If the fuel pressure up to 860000 bar (125 lbs / inch ²), the bypass of opening will be connected to the output end of the pump and the input, so as to prevent because of too much pressure caused by damaged fuel system.

输送泵泵出油，通过燃油过滤箱到达燃油支管。燃油支管有两部分，通过支管上面管子的油流到每缸头右边的燃油管线进口。早期柴油机，逢隙式过滤器装在燃油进入气缸头的配合地方，后期柴油机，逢隙式过滤器装在喷油器进口。燃油通过缸头中的钻孔通道进入喷油器周围的园胫(园形状)，这园胫由喷油器外径的园环和缸头的喷油器孔围成。

Pump pump oil, through the fuel filter box to the fuel pipe. Fuel pipe has two parts, flow into the fuel line imported each cylinder head right through the branch pipe of oil. Early diesel engine, every gap type filter is installed in place with the fuel into the cylinder head of diesel engine, later, every gap filter installed in the fuel injector inlet. Park Shin fuel through the drilling channel cylinder head in the injector (around the garden, the garden and shape) from the fuel injector ring injector diameter and cylinder head hole surrounded.

园胫的燃油仅有部分用于喷射。通过园胫流到缸头左边钻孔通道的燃油，大约是正常燃烧所需要的4½倍。左边钻孔通道接到管线(13)出口端，再到燃油支管的下面，喷油器周围的这种燃油连续流动有助于冷却喷油器。

Fuel only part of garden tibial for injection. Flow into the cylinder head left hole channel fuel through the Park Shin, is about normal burning need 4 ½ times. The left hole channel received line (13) to the outlet end, fuel branch pipe, the fuel injector around the continuous flow helps cool the fuel injector.

燃油通过每根燃油支管的下面管子返回到压力调节伐(5)压力调节伐在右边燃油支管的前面，燃油流经此伐然后返回油箱。

The fuel through the fuel pipe below each branch back to the pressure adjusting valve (5) pressure adjusting valve in front of the right fuel branch pipe, the fuel flows through the cutting and then return tank.

根据所消耗燃油(用于燃烧)，检查每次柴油机的安装，看其剩余燃油量，最少的流量是消耗燃油量的三倍。剩余的燃油随后返回燃油箱后不是返回输送泵入口，这样就保证燃油送回喷油器前消除系统中的空气。

According to the fuel consumption (burning), check each diesel engine installation, see the amount of fuel remaining, minimum flow is three times the amount of fuel consumed. The remaining fuel before returning to the fuel tank is not returned to the pump entrance, so that the fuel injector system to eliminate air.

装在燃油支管下面和燃油流回油箱的管线之间的压力调节伐(5)有一根弹簧和一个柱塞。 伐保持燃油压力在415至450千巴之间（60到65磅/吋2）。

Installed in the fuel pipe fuel tank below and pipeline pressure adjusting valve (5) with a spring and a plunger. Keep the fuel pressure of between 415 to 450000 bar (60 to 65 pounds per inch 2).

变换各种过滤器时，为了抽除系统中空气，在调节器伐保持器的进出通道之间应用缸吸器（小喷咀）。变换各种过滤器后，一般不必用注射泵驱赶空气离开系统，当管线干燥时必须使用注射泵，如：大修后或其它主要燃油系统处理后。

Transform a variety of filter, in order to pumping system in air, the regulator of import channel is maintained between the application cylinder haustorium (small nozzle). Transformation of various filters, generally do not have to leave the system for injection pump to drive the air drying, when the pipeline must use the injection pump, such as: overhaul or other main fuel system after treatment.