卡特彼勒CAT柴油發(fā)動機修理技術

Caterpillar CAT diesel engine repair technology

總 述

The total of the

燃油輸送泵(7)裝在柴油機右邊，柴油機下面油泵軸驅動這齒輪式輸送泵。來自供油箱的燃油，經(jīng)過初步過濾，由輸送泵抽出送到燃油過濾箱。

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.

輸送泵有一個止回伐和一個旁通伐。泵件裝在管線(9)后面，止回伐裝在泵頭上，當使用注油泵時，止回伐防止燃油通過輸送泵流回去，旁通伐裝在輸送泵驅動端蓋后面，旁通伐限制燃油的最大壓力。如果燃油壓力上升到860千巴(125磅/吋²)，旁通伐開啟將泵的輸出端和輸入端連通，這樣就防止由于太大壓力而引起燃油系統(tǒng)損壞。

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.

輸送泵泵出油，通過燃油過濾箱到達燃油支管。燃油支管有兩部分，通過支管上面管子的油流到每缸頭右邊的燃油管線進口。早期柴油機，逢隙式過濾器裝在燃油進入氣缸頭的配合地方，后期柴油機，逢隙式過濾器裝在噴油器進口。燃油通過缸頭中的鉆孔通道進入噴油器周圍的園脛(園形狀)，這園脛由噴油器外徑的園環(huán)和缸頭的噴油器孔圍成。

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.

園脛的燃油僅有部分用于噴射。通過園脛流到缸頭左邊鉆孔通道的燃油，大約是正常燃燒所需要的4½倍。左邊鉆孔通道接到管線(13)出口端，再到燃油支管的下面，噴油器周圍的這種燃油連續(xù)流動有助于冷卻噴油器。

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.

燃油通過每根燃油支管的下面管子返回到壓力調節(jié)伐(5)壓力調節(jié)伐在右邊燃油支管的前面，燃油流經(jīng)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.

根據(jù)所消耗燃油(用于燃燒)，檢查每次柴油機的安裝，看其剩余燃油量，最少的流量是消耗燃油量的三倍。剩余的燃油隨后返回燃油箱后不是返回輸送泵入口，這樣就保證燃油送回噴油器前消除系統(tǒng)中的空氣。

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.

裝在燃油支管下面和燃油流回油箱的管線之間的壓力調節(jié)伐(5)有一根彈簧和一個柱塞。 伐保持燃油壓力在415至450千巴之間（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).

變換各種過濾器時，為了抽除系統(tǒng)中空氣，在調節(jié)器伐保持器的進出通道之間應用缸吸器（小噴咀）。變換各種過濾器后，一般不必用注射泵驅趕空氣離開系統(tǒng)，當管線干燥時必須使用注射泵，如：大修后或其它主要燃油系統(tǒng)處理后。

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.