1 Correct use and protection of diesel engines

When the Deutz engine is started, the preheating method should be used as far as possible: when the Deutz engine is operated in winter, the body temperature should be adhered to within the normal range, to prevent the bad operation habits such as blasting throttle, forced heating, emergency braking and parking, to avoid the sudden increase and decrease of load under low temperature conditions and long idle operation, and to reduce the number of cold starts as far as possible.

Do a good job of new and overhauled Deutz engine running-in period of running-in operations, protection and cleaning operations. In the process of carrying the vehicle, adhere to the medium speed and reasonable loading.

Strengthen the protection of "three filters" and replace the filter element in time. According to material analysis, if 1g of dust enters the cylinder, the upper part of the cylinder can be worn by 0.01mm, the piston can be worn by 0.75g of mass, and the piston ring can be worn by 0.009mm. Therefore, it is necessary to periodically force the protection of air filters, oil filters, and diesel filters.

The correct selection, viewing and replacement of lubricating oil, should choose the same trademark, the same manufacturer, the same viscosity and quality grade of lubricating oil, stop the different viscosity and quality grade of lubricating oil mixed, filling is selected in the absence of wind and pollution-free occasions to avoid dust and water and other pollutants into.

Fuel should be correctly selected according to the climate environment and the functions of Deutz diesel engine, and carefully proofread and adjust the injection pressure of the injector and the oil supply advance Angle of the injection pump to ensure that the diesel engine works under ideal conditions.

To avoid the diesel engine in the short cooling water or long time overheating conditions, stop in the Deutz diesel engine body temperature is too high, filling coolant or water washing the body.

2 Improve the repair quality of Deutz diesel engines

Strengthen the cleaning and anti-contamination of every process in the selection and assembly of Deutz parts.

Correct selection and assembly of piston rings, now high-speed diesel engine piston rings are chrome plating, molybdenum and other processes, to stop the use of grinding rings to trim the "backlash"; Special tools should be used when installing the piston ring, and the piston ring mouth should be prevented from expanding and tightening at will to avoid the permanent deformation of the piston ring that is distorted up and down because of the improper device method; The piston connecting rod is assembled into the cylinder. Stop the hard force to avoid the piston ring and the cylinder hit and resulting in damage, cracks, etc.

The crankshaft axial void should conform to the rules, and the twists and turns of the connecting rod need to be calibrated to ensure the correct orientation of the piston in the cylinder.

The selection and installation method of cylinder liner must be correct to avoid partial deformation, skew and stress concentration of cylinder liner due to improper installation; The interference amount between cylinder liner and cylinder body and the protrusion amount of upper plane behind cylinder liner device should be strictly controlled within the regular range; Properly tighten the cylinder head, the torque of bolts such as cylinder head and rod bearing cover should be uniform and in accordance with the rules.

Pay attention to the cold grinding and hot test of the diesel engine after assembly, and the running-in time is 16 hours. According to material analysis, the life of the run-in piston ring is 20% to 30% longer than that of the unrun-in piston ring, so it is necessary to pay attention to and carefully do debugging, disassembly and cleaning operations.

3 Strengthen the storage of piston rings

The storage of piston rings should be classified according to different types of diesel engines to avoid mixed storage and mixed loading; In the storage and transfer process to avoid falling, to avoid the formation of damage, cracks, deformation; The piston ring should be placed flat in the storage process to avoid unstable placement and to avoid corrosion due to poor management.