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NISSAN | TD25/TD27/TD27T/TD42/QD32/SD22/SD23/SD25/KA24 YD25/Z20/Z24/ZD30/TB42/NA20/SR20 |
MITSUBISHI | 4D30/4D30A/4DR7/S4S/6D16/4G13/4G54/4G63/4G64 6G72/4D55/4D56/4M40T/4M41 |
TOYOTA | H/2H/3B/14B/15B/2J/1Z/2Z/1DZ/2L/2L2/2LT/3L/5L/2E/2C 3C/3Y/4Y/5K/7K/22R/1KD/2KD/2TR/2RZ/ 1RZ/1KZ/1HZ/1FZ/3S/5S twoo auto parts |
MAZDA | WLT/WE/R2/RF/FE/F2/NA/SL |
KIA | J2/JT/S2/XA/VN/JS/J3/B3/KIA/PRIDE/MATIZ/TICO
OK65C10100/OK75A10100/OVN0110100/OK48010100 OK75610100/OSL0110100E |
SUZUKI | F8A/F10A/G10B/G13B/G16B/ |
KOMATSU | 4D95/4D94E/6D105/6d95/4D130 |
2.5L//2.8L | |
DEUTZ | FL912/FL913 |
PEUGEOT | 405/505/206/ |
Mercedes-Benz | OM355/OM442 |
Daihatsu | DL/SL |
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Tips:
How to debug diesel engine injection pumps
After the assembly of the injection pump with the governor
assembly, it should be debugged on the injection pump test bench,
and the performance must meet the requirements of the regulations.
The pre-stroke of the first cylinder is achieved by adjusting the
height of the bolts adjusted by adjusting the pre-stroke of the
first cylinder of the injection pump, according to the order of
fuel supply of each cylinder, the static oil supply angle is 60
degrees, and the error is ±0.5 degrees, which is achieved by
adjusting the consistency of the pump adjustment bolts.
First, push the adjustment rod to the end and fix it, use a
screwdriver to loosen the locking screw on the adjustment ring, use
a screwdriver to touch the small hole in the sleeve to control the
amount of oil, and tap the screwdriver to rotate the sleeve at an
angle to increase or decrease the amount of oil supply; Adjust
successively until the oil supply is uniform to each cylinder, and
then tighten the locking screws. The injector injection pressure of
the new part of the air-cooled diesel engine is high. For the
direct injection injector, the injection pressure requirement of
the new part is adjusted to 18.0-18.8MPa, and the injection
pressure requirement of the working injector is adjusted to
17.5-18.3MPa; Eddy current chamber injector, the new part is
12.0-12.8MPa, the working is 11.5-12.31MPa, this situation is
because the new part after the installation of the work, the
injector components to carry out the initial run-in, the injection
pressure will soon be reduced to the normal working pressure value,
so it is necessary to adjust higher. In addition, it should be
noted that when verifying the injection pressure value, the new
injector should not be adjusted according to the injection pressure
value at the time of operation, but should be adjusted according to
the injection pressure value required by the state of use.
Second, when debugging the overhaul fuel injection pump in use, the
following points should be paid attention to: regularly check the
oil supply advance angle and the oil supply interval angle of each
cylinder. In use, due to the loosening of the coupling bolts of the
coupling, the wear of the camshaft and roller body components often
leads to changes in the oil supply advance angle and the oil supply
interval angle of each cylinder, so that the diesel combustion
becomes bad, the power and economy of the diesel engine become
worse, and the start is difficult, the operation is unstable, and
the abnormal sound and overheating are issued. In actual use, most
of them pay attention to the inspection and adjustment of the
overall oil supply advance angle, but ignore the inspection and
adjustment of the oil supply interval angle (involving the
adjustment of the oil supply angle of the single pump), resulting
in the overall adjustment, although the first cylinder is oil
supply timing, but the rest of the cylinders due to the wear of
camshafts, roller transmission components and other reasons make
the oil supply not necessarily timely, which will also lead to
diesel engine start difficulties, insufficient power, and unstable
operation, especially for the injection pump with a long use time,
more attention should be paid to the inspection and adjustment of
the oil supply interval angle.
Third, regularly check the camshaft clearance, the axial clearance
requirements for the fuel injection pump camshaft are very strict,
generally between 0.03- 0.15mm, the gap is too large, will
aggravate the impact of the roller transmission components on the
working surface of the cam, thereby increasing the early wear of
the cam surface, changing the angle of oil supply advance; Camshaft
bearing shaft diameter clearance is too large, easy to cause the
camshaft operation is not stable, the amount of oil adjustment tie
rod jitter, the amount of oil supply periodical changes, so that
the diesel engine operation is not stable, so it is necessary to
check and adjust regularly; When the axial clearance of the
camshaft is too large, a gasket adjustment can be added on both
sides; The radial clearance is too large and should generally be
replaced.
Fourth, regularly check the oil supply of each cylinder, due to the
wear of the plunger coupling and the oil outlet valve coupling,
resulting in diesel internal leakage, will make the oil supply of
each cylinder reduced or uneven, resulting in diesel engine start
difficulties, insufficient power, increased fuel consumption,
unstable operation. Therefore, it is necessary to regularly check
and adjust the fuel supply of each cylinder of the injection pump
to ensure the exertion of diesel engine power. In actual use, the
size of the oil supply of each cylinder can be determined by
observing the exhaust gas of the diesel engine, listening to the
sound of the engine, and touching the temperature of the exhaust
manifold.