Diesel speed means that the speed suddenly rises and it greatly exceeds the nominal speed. At this time, the exhaust sound of the diesel engine is getting denser, the exhaust pipe is emitting black smoke, and reducing the throttle can't reduce the speed. If no emergency measures are taken, the connecting rod bolt will break and the cylinder head, body, and piston will be damaged. Such parts, but also will appear flywheel rupture, valve and valve spring breaking and other major accidents, and even a direct threat to personal safety, which requires the driver to be in no danger, calmly take effective methods to resolve or reduce the accident The degree of harm.
First, the reason for the diesel engine speed
1, the amount of oil is too large (1) oil pump plunger or speed lever stuck stuck in the maximum fuel supply position.
(2) The oil pump plunger adjusting arm slides out of the speed adjusting lever fork groove, or does not install the oil adjusting arm into the groove during the installation, causing the oil pump plunger to be in the maximum fuel supply position, and the diesel engine starts to take off. .
(3) The misalignment of the rack and plunger gears is misaligned when assembling the gear rack plunger pump.
(4) The plunger sleeve loosening screw or the screw head wear becomes short, and can not play a positioning role. During assembly, the plunger sleeve has been deflected by an angle in the direction of large oil supply.
(5) The axial oil return hole in the middle of the oil pump plunger is blocked.
(6) The speed changer bakelite part is cracked and damaged, the steel ball falls off, or the axis of the speed regulation gear shaft moves inflexibly. The centrifugal force of the steel ball cannot push out the slide plate outward, resulting in the oil pump plunger being in the maximum fuel supply position.
2, a large number of lubricants into the combustion chamber (1) to add too much oil in the sump, due to piston, liner wear serious, with the gap is too large, so that a large number of oil into the cylinder combustion and cause a speed.
(2) Oil bath type air filter The oil in the oil pan is too much. The oil enters the cylinder with the air and burns, causing the car to fly.
(3) After the overhaul of the engine, the direction of the piston ring is reversed; the opening of the piston ring goes to the other side or the gap of the piston ring opening, and the edge clearance is too large to cause burning of the oil and cause the vehicle to fly.
II. Urgent Measures to Be Taken to Stop the Speeding-up When the diesel engine speeds up, it should calmly and decisively take effective measures to stop the coaster. Do not be dismayed.
1, quickly remove the air filter, blocking the intake pipe, such as the air filter too late to remove clothes or towels can be tightly wrapped around the air filter air inlet, so that air can not enter the cylinder and diesel engine Turn off the flames, this is the most effective way to stop the car.
2. When the vehicle is heavy, the diesel engine can be overloaded to stop the diesel engine.
3, quickly loosen the high pressure tubing connector nut, cut off the diesel supply. If the spanner cannot be found temporarily, the high pressure tubing can also be blown off to stop the diesel engine.
4, when the speed of the car can be decompression handle pull to the decompression position, so that the diesel engine parking. If the speed of the diesel engine is already high, this method cannot be used.
Third, diesel engine speed troubleshooting
1. When stopping the car, first cut off the supply of diesel fuel, and quickly loosen the high pressure tubing connector nut. If the coaster stops immediately, it means that the diesel coaster is caused by too much diesel supply. At this time, it can be checked whether the oil pump plunger adjusting arm slides out of the speed adjusting lever fork or whether the oil pump plunger and the speed lever are stuck at the maximum fuel supply position. If the rider has just changed the plunger of the pump, check whether the oil pump adjusting arm of the pump plunger is embedded in the fork handle of the speed-regulating lever. Also pay attention to whether the axial return oil hole of the plunger is not processed. . For gear-tooth-rod type oil pumps, it is necessary to check the accuracy of the oil-adjusting gear and rack assembly markings during assembly.
2. If the diesel engine is still racing after loosening the bolts of the high-pressure fuel pipe joints, excessive fuel oil will enter the cylinder and cause combustion. At this time, quickly remove the air filter and block the intake pipe. If it is too late to remove the air filter, use clothes, towels, etc. to tightly wrap the air inlet of the air filter so that air cannot enter the air cylinder. After the diesel engine is stopped, first remove the oil dipstick and check if there is too much oil in the oil pan. If the oil level is too high, release too many parts; if not, check the air filter inside the oil pan. If the oil is too high, give off too much part and check whether there is a lot of diesel oil or oil in the air cleaner core. After checking the oil surface of the oil pan and air filter oil pan, if it is not found, The problem is to check whether the piston, cylinder liner, and piston ring are seriously worn, and whether the piston ring is reversed or stuck in the ring groove.
After the flight of the diesel engine is stopped and the fault is removed, it is also necessary to check whether the various moving parts of the diesel engine are damaged by the flying car so as to avoid unnecessary losses.
First, the reason for the diesel engine speed
1, the amount of oil is too large (1) oil pump plunger or speed lever stuck stuck in the maximum fuel supply position.
(2) The oil pump plunger adjusting arm slides out of the speed adjusting lever fork groove, or does not install the oil adjusting arm into the groove during the installation, causing the oil pump plunger to be in the maximum fuel supply position, and the diesel engine starts to take off. .
(3) The misalignment of the rack and plunger gears is misaligned when assembling the gear rack plunger pump.
(4) The plunger sleeve loosening screw or the screw head wear becomes short, and can not play a positioning role. During assembly, the plunger sleeve has been deflected by an angle in the direction of large oil supply.
(5) The axial oil return hole in the middle of the oil pump plunger is blocked.
(6) The speed changer bakelite part is cracked and damaged, the steel ball falls off, or the axis of the speed regulation gear shaft moves inflexibly. The centrifugal force of the steel ball cannot push out the slide plate outward, resulting in the oil pump plunger being in the maximum fuel supply position.
2, a large number of lubricants into the combustion chamber (1) to add too much oil in the sump, due to piston, liner wear serious, with the gap is too large, so that a large number of oil into the cylinder combustion and cause a speed.
(2) Oil bath type air filter The oil in the oil pan is too much. The oil enters the cylinder with the air and burns, causing the car to fly.
(3) After the overhaul of the engine, the direction of the piston ring is reversed; the opening of the piston ring goes to the other side or the gap of the piston ring opening, and the edge clearance is too large to cause burning of the oil and cause the vehicle to fly.
II. Urgent Measures to Be Taken to Stop the Speeding-up When the diesel engine speeds up, it should calmly and decisively take effective measures to stop the coaster. Do not be dismayed.
1, quickly remove the air filter, blocking the intake pipe, such as the air filter too late to remove clothes or towels can be tightly wrapped around the air filter air inlet, so that air can not enter the cylinder and diesel engine Turn off the flames, this is the most effective way to stop the car.
2. When the vehicle is heavy, the diesel engine can be overloaded to stop the diesel engine.
3, quickly loosen the high pressure tubing connector nut, cut off the diesel supply. If the spanner cannot be found temporarily, the high pressure tubing can also be blown off to stop the diesel engine.
4, when the speed of the car can be decompression handle pull to the decompression position, so that the diesel engine parking. If the speed of the diesel engine is already high, this method cannot be used.
Third, diesel engine speed troubleshooting
1. When stopping the car, first cut off the supply of diesel fuel, and quickly loosen the high pressure tubing connector nut. If the coaster stops immediately, it means that the diesel coaster is caused by too much diesel supply. At this time, it can be checked whether the oil pump plunger adjusting arm slides out of the speed adjusting lever fork or whether the oil pump plunger and the speed lever are stuck at the maximum fuel supply position. If the rider has just changed the plunger of the pump, check whether the oil pump adjusting arm of the pump plunger is embedded in the fork handle of the speed-regulating lever. Also pay attention to whether the axial return oil hole of the plunger is not processed. . For gear-tooth-rod type oil pumps, it is necessary to check the accuracy of the oil-adjusting gear and rack assembly markings during assembly.
2. If the diesel engine is still racing after loosening the bolts of the high-pressure fuel pipe joints, excessive fuel oil will enter the cylinder and cause combustion. At this time, quickly remove the air filter and block the intake pipe. If it is too late to remove the air filter, use clothes, towels, etc. to tightly wrap the air inlet of the air filter so that air cannot enter the air cylinder. After the diesel engine is stopped, first remove the oil dipstick and check if there is too much oil in the oil pan. If the oil level is too high, release too many parts; if not, check the air filter inside the oil pan. If the oil is too high, give off too much part and check whether there is a lot of diesel oil or oil in the air cleaner core. After checking the oil surface of the oil pan and air filter oil pan, if it is not found, The problem is to check whether the piston, cylinder liner, and piston ring are seriously worn, and whether the piston ring is reversed or stuck in the ring groove.
After the flight of the diesel engine is stopped and the fault is removed, it is also necessary to check whether the various moving parts of the diesel engine are damaged by the flying car so as to avoid unnecessary losses.
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Purity ≥85.0%
Neatness ≥70.0%
Germination percentage ≥85.0%
Moisture ≤10.0%
Origin Ningxia, China
Sowing dosage: 1kg to 1.5kg per 667m2.
PH VALUE: Not special request
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