With the progress of science and technology, the machine - electro - hydraulic integrated control mode is generally adopted in the tenancy of the telescopic boom excavator. When we eliminate some failures, we solve the matching problem of the engine hydraulic pump distribution valve and the external load.
1, engine speed decline:
First of all, to test the output power of the engine itself, if the engine output power is greatly lower than the rated power, for example, in the construction site to judge from the simplest method, first see whether the fuel filter core is blocked, the fuel road has leakage of gas, the plunger in the fuel pump, the injection head, and the serious wear and tear of the oil outlet valve. If the air filter is unobstructed, the engine of the turbocharger, the turbocharger is damaged, whether the engine is fast and high temperature, the viscosity of the engine oil decreases, the cylinder wall is closed and the compression ratio decreases, whether the cylinder sleeve components are worn out in the cylinder and the engine gas door is closed, these are serious shadows. The power factor of the engine.
2, the speed of work is slow:
The main factor is that the wear of all parts of the whole machine causes the power decline of the engine and the leakage of the hydraulic system. In this way, a series of failures are shown. As the leakage causes internal energy consumption, a large amount of heat energy is produced, the whole system is heated up rapidly, the viscosity of the hydraulic oil and engine oil drops, and the whole system produces high temperature. The cooler is slower and hotter and slower, which requires full machine overhaul and repair and replacement of parts with excessive wear and tear.
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