这种故障的检查和排除可在现场完成。用手油泵泵油至一定压力,松开放气螺钉,如有气泡溢出且始终排气不尽,则说明油路进空气;如没有气泡但柴油从放气螺钉处溢出无力,则说明油路被堵塞。正常情况是稍松开放气螺钉,立即有油柱以一定压力喷射出来。排除故障方法是找出损坏或老化的垫圈、接头或油管予以更换。
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2 喷油泵和喷油器故障
2. 1 高压油泵供油量过大或过小
喷油嘴 | P | 9 430 084 703 | DLLA150P106 |
喷油嘴 | P | 0 433 171 098 | DLLA150P105 |
喷油嘴 | P | DLLA150P1008 | DLLA150P1008 |
喷油嘴 | P | DLLA150P082 | DLLA150P082 |
喷油嘴 | P | DLLA150P070 | DLLA150P070 |
喷油嘴 | P | E WEAD900121001A | DLLA150P068 |
喷油嘴 | P | DLLA150P011 | DLLA150P011 |
喷油嘴 | P | DLLA150P010 | DLLA150P010 |
喷油嘴 | P | DLLA149P703 | DLLA149P703 |
喷油嘴 | P | DLLA149P541 | DLLA149P541 |
喷油嘴 | P | 0 433 171 370 | DLLA149P514 |
喷油嘴 | P | DLLA149P460 | DLLA149P460 |
喷油嘴 | P | 0 433 171 694 | DLLA149P369 |
喷油嘴 | P | DLLA149P369 | DLLA149P369 |
喷油嘴 | P | DLLA149P174 | DLLA149P174 |
喷油嘴 | P | DLLA148PN283 | DLLA148PN283 |
喷油嘴 | P | 105017-2660 | DLLA148PN266 |
喷油嘴 | P | DLLA148P932 | DLLA148P932 |
喷油嘴 | P | DLLA148P928 | DLLA148P928 |
喷油嘴 | P | 0 433 171 605 | DLLA148P911 |
喷油嘴 | P | DLLA148P694 | DLLA148P694 |
喷油嘴 | P | 9 430 084 756 | DLLA148P597 |
喷油嘴 | P | 0 433 171 369 | DLLA148P513 |
喷油嘴 | P | 0 433 171 291 | DLLA148P408 |
喷油嘴 | P | DLLA148P329 | DLLA148P329 |
喷油嘴 | P | 0 433 171 195 | DLLA148P241 |
喷油嘴 | P | DLLA148P229 | DLLA148P229 |
喷油嘴 | P | DLLA148P199 | DLLA148P199 |
喷油嘴 | P | DLLA148P170 | DLLA148P170 |
喷油嘴 | P | DLLA148P169 | DLLA148P169 |
喷油嘴 | P | DLLA148P168 | DLLA148P168 |
喷油嘴 | P | 0 433 171 146 | DLLA148P163 |
喷油嘴 | P | DLLA148P1549 | DLLA148P1549 |
喷油嘴 | P | 0 433 171 134 | DLLA148P149 |
如果高压油泵供油量调整不当或零件磨损,就会产生供油量过大或过小。当供油量过小时启动困难,功率不足,转速下降;当供油量过大时,柴油机转速过高,冒黑烟,甚至可能有“游车”和“飞车”现象。这时,应当重新调整高压油泵的供油量,使供油量达到要求。
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