中英文文獻(xiàn)翻譯0001

1、附錄A英文文獻(xiàn)與中文參考翻譯In the 1970s introduced electronic controls fuel injection system with high performance, it can meet the modern automobile to except the strict request discharge, saving, increase in power, to improve performance and many other aspects accelerating its advantages, gradually replacing c

2、arburetor and extensive use, is the inevitable trend of the future.In EFI system, a fuel common faults mainly has: the ignition switch, pump, oil pump does not turn the oil pipeline, not too high or too low, hydraulic injection fuel nozzle nozzle, no oil leakage or drops of oil, fuel nozzle and tubi

3、ng connection or the intake manifold junction leakage, and cold start-up nozzle doesnt work, etc. The following simple introduction of these faults and eliminate.oil pump oil or notThe ignition switch, pump can turn or pump oil, the main causes of the following: (1) if the engine running, because th

4、e air flow has not moved, and the impeller of it is not connected to pump switches to L (EFI system), or distributor in speed signal transmission to the electronic controller (ECU) (EFI system for D) : 2) pump drive circuit relay or main contactor relays disconnect circuit breakers, or coil ablation

5、, 3) pump power input, or the power plug contact undesirable conductor disconnected, 4) pump brush, brush spring break or wear loses elasticity: 5) of the armature winding burning oil: 6) pump wheels stuck. For this failure, should press following method for checking and removing: check whether the

6、oil pump, electric in through the ignition switch engine running, not after the press the pump drive circuit switch, such as oil pump check and its driving circuit itself without fault, pump should be able to turn and oil pump. If pump, should first turn not check whether the power plug pump, or loo

7、se wires connecting the disconnect, this is the most common causes of malfunction, also more easily. Further, including driving circuit can check to the failure of the ignition switch, fuse is, the relay, power supplies, and such as relays disconnect the plug and wires connecting them. The relay con

8、tacts ablation, electromagnetic winding drive circuit broken will affect the burn, pump can rotate. If contact ablation is not serious, can repair, or by burnish should replacement parts. Final inspection pump itself, can use digital multimeter measurement of the oil pump motor armature, normally it

9、s resistance to 12 15n, if the measurement result is somewhat larger, probably due to plug, attachment areas such as poor contact, or brush wear. If the measured value is infinite, you must have been burned armature winding is broken. Because of the pump is whole package, cannot open repair, so shou

10、ld be replaced. After the examination, and in different parts of the normal circumstance, still appear likely engine running, dont turn pump is due to the air flow pump switches have caused by fault, switch contact undesirable, can cause failure attachment breakers. Through the inspection pump switc

11、hes, easily find fault.pump rotation but not pump oilPump rotation but not pump oil, mainly composed of the following reasons: 1) the pump pressure valves, or stuck roof-floor valve spring break, make discharging pressure valves, pumps have often open the oil pump flow back, but only to the tank can

12、 pump pressure pipe in fuel, 2) of the oil pump fitting stuck out of oil pump, not by pressing pressure oil pressure valves only by return tank, 3) the pump JinYou blocked, or JinYou mesh seere blockages, make the pump suction resistance due to too much and cannot pump out fuel, 4) pump impeller and

13、 pump shell with serious wear, mutual exist great gap, cannot be fuel pump. To avoid this problem, should strictly in accordance with the requirements of operation and maintenance, cleaning, cleaning tank on screen, avoid jam phenomenon. To check or discharging pressure valves, slight delay card can

14、 use the method to eliminate keystrokes and vibration. If you have severe worn or damaged parts of the situation, it should be replaced pump.fuel pressure lowFrom the oil pump output to fuel pressure should be 0.27-0.30 MPa. Low pressure will seriously affect the fuel injection quantity measurement,

15、 to reduce power down, causing difficulty, starting to engine performance. Low pressure caused by the reasons for oil pump, valve, pressure from 0 - or - to valve leakage, JinYou filter clogging pump impeller and, wear, and fuel filters in oil, are the factors should be taken into consideration. Ano

16、ther to consider is the regulator, if the voltage regulator, the diaphragm spring is damaged, soft, seating damage caused by oil pressure will be low. If the above situation, should replace the regulator.fuel pressure is too highPressure regulator is caused by excessive stiffness spring is the main

17、reason for the high pressure difference, if the standard with excessive, will make the injection quantity, causing the mixture, now should replace pressure regulator. In addition, pressure regulator and the intake manifold connection pipe leakage, make its cannot feel intake manifold vacuum, will ca

18、use the compensating mixture too thick. Through the careful installation of connection lines and often check, can avoid such failure.cold start-up nozzles.such workCheck whether the cold start nozzle can work normally, it should be removed from the inlet connection, with the special tools to coiled

19、tubing connection with the cold start nozzle together, reoccupy interconnects socket and special tools to both the battery. Note battery anode, positive line only even in my hand, and in a very short time point of contact battery anode piles, if the cold start nozzle is good, it will be a brief jet

20、fuel. Otherwise, shall check the cold start nozzle, main is to check whether the magnetic coil. Using a multimeter to check the magnetic coil, the resistance should be in 3-5 Q, if the resistance, that the magnetic coil is burning. If the cold start nozzle is good, but do not spray, should check whe

21、ther the normal temperature switches. Using the multimeter to test its two ends, wiring resistance should be 20- 50 Q, if reach 50 -60 Q that its internal contacts have closed loop, nozzle coil current, cause not spray. Note that if the environment temperature over 40 C, the temperature of the time

22、switch contacts open attribute normal phenomenon.參考譯文：20世紀(jì)70年代推出的電子控制燃料噴射系統(tǒng)具有優(yōu)良的性能，它除了可以滿(mǎn)足 現(xiàn)代汽車(chē)對(duì)排放、節(jié)油的嚴(yán)格要求外，還在增大功率、改善加速性能等許多方面具有 優(yōu)勢(shì)，其逐步取代化油器而廣泛使用，是今后的必然趨勢(shì)。在EFI燃油系統(tǒng)中，較常見(jiàn)的故障主要有：點(diǎn)火開(kāi)關(guān)接通后，油泵不轉(zhuǎn)動(dòng)、油泵 不泵油、管路中的油壓過(guò)高或過(guò)低、燃油噴嘴不噴油、燃油噴嘴滲油或滴油、燃油噴 嘴與油管連接處或進(jìn)氣歧管連接處漏油，以及冷起動(dòng)噴嘴不工作等。下面簡(jiǎn)單介紹這 些故障的分析及排除。（1）油泵不轉(zhuǎn)或不泵油點(diǎn)火開(kāi)關(guān)接通后，油泵不

23、能轉(zhuǎn)動(dòng)或不泵油，主要由下列原因造成：1）若發(fā)動(dòng)機(jī)尚 未運(yùn)行，因空氣流量計(jì)葉輪未動(dòng)，使與它聯(lián)動(dòng)的油泵開(kāi)關(guān)未被接通（對(duì)L型EFI系統(tǒng)）， 或分電器中無(wú)轉(zhuǎn)速信號(hào)輸送到電子控制器（ECU）中去（對(duì)D型EFI系統(tǒng)）:2）油泵驅(qū)動(dòng)電 路主繼電器或電路斷開(kāi)繼電器的觸頭燒蝕，或線圈斷路；3）油泵的電源輸入插頭接觸 不良，或電源導(dǎo)線斷開(kāi)；4）油泵的電刷磨損，電刷彈簧斷裂或失去彈性：5）油泵的電 樞線圈燒斷；6）泵輪卡住。對(duì)于這一故障，應(yīng)按如下方法進(jìn)行檢查和排除：為了檢查 電動(dòng)油泵是否良好，在接通點(diǎn)火開(kāi)關(guān)后發(fā)動(dòng)機(jī)尚未運(yùn)行時(shí)，按下油泵驅(qū)動(dòng)電路中的油 泵檢查開(kāi)關(guān)，如油泵本身和它的驅(qū)動(dòng)電路沒(méi)有故障，油泵應(yīng)能轉(zhuǎn)動(dòng)和泵油。

24、如果油泵 不轉(zhuǎn)，應(yīng)首先檢查油泵的電源插頭是否松動(dòng)，連接導(dǎo)線有無(wú)斷開(kāi)之處，這是最為常見(jiàn) 的故障根源，排除也比較容易。進(jìn)一步可檢查驅(qū)動(dòng)電路，其中易發(fā)生故障的是點(diǎn)火開(kāi) 關(guān)、熔斷絲、主繼電器、電源斷開(kāi)繼電器等部件，以及連接它們的插頭和導(dǎo)線。繼電 器的觸頭燒蝕、電磁線圈燒斷都會(huì)影響驅(qū)動(dòng)回路，使油泵不能轉(zhuǎn)動(dòng)。若觸點(diǎn)燒蝕不嚴(yán) 重，可以通過(guò)打磨進(jìn)行修復(fù)，否則應(yīng)更換部件。最后檢查油泵本身，可使用數(shù)字萬(wàn)用 表測(cè)量油泵電機(jī)的電樞，正常情況下它的電阻為1215n，如果測(cè)量結(jié)果略大一些， 可能是由于插頭、連線等部位接觸不良，或電刷磨損所致。若測(cè)量值為無(wú)窮大，則必 然是電樞線圈已被燒斷。由于油泵是整體封裝的形式，無(wú)法拆開(kāi)

25、修理，因此應(yīng)予更換。 經(jīng)上述檢查后，在各部分均正常的情況下，仍有可能出現(xiàn)發(fā)動(dòng)機(jī)運(yùn)行時(shí)油泵不轉(zhuǎn)的情 況，這是由于空氣流量計(jì)中的油泵開(kāi)關(guān)有故障所致，開(kāi)關(guān)接觸不良，連線斷路等都會(huì) 造成故障。通過(guò)檢查油泵開(kāi)關(guān)連線，可以比較容易地發(fā)現(xiàn)故障。（2）油泵轉(zhuǎn)動(dòng)但不泵油油泵轉(zhuǎn)動(dòng)但是不泵油，主要由如下原因造成：1）油泵的卸壓閥被卡住，或卸壓閥 彈簧折斷，使卸壓閥常開(kāi)，油泵所泵的油只是流回到油箱，而不能泵壓到燃油管道中;2）油泵出油口的單向閥被卡住不能出油，通過(guò)泵輪被加壓的壓力油只能經(jīng)卸壓閥流回 油箱；3）油泵的進(jìn)油口堵塞，或進(jìn)油濾網(wǎng)嚴(yán)重堵塞，使油泵由于吸入阻力太大而不能 泵出燃油；4）油泵的葉輪和泵殼由于嚴(yán)重的磨損，相互間存在著很大的間隙，無(wú)法將 燃油加壓泵出