Excavator overheating protection method

Abstract

The invention dissolves an excavator overheating protection method is characterized by comprising the steps of: detecting water temperature of an engine by a temperature sensor of the engine, transmitting a signal to a controller by the temperature sensor when the water temperature is not less than 103 DEG C, receiving the signal by the controller and sending a signal to control the current of a main pump proportional valve, reducing the power of a main pump by 3 percent, enabling an excavator to continuously work when the temperature is not higher than 100 DEG C after regulation; if the temperature is still high after regulation, judging that the power of the main pump is reduced, and when the reduction reaches 15 percent, controlling the engine to be in an idling state by the controller; and when the reduction is not more than 15 percent, continuously reducing the power of the main power until the engine does not overheat. Int the invention, the temperature is detected by the temperature sensor and the signal is transmitted to the controller, the controller controls the reduction of the power of the main pump, therefore, the temperature of the engine is lowered and normal work is not influenced.

Description

technical field [0001] The invention relates to an overheat protection method, in particular to an engine overheat protection method of an excavator. Background technique [0002] With the continuous advancement of science and technology, various types of construction machinery have been widely used in construction, water conservancy and other engineering fields, such as excavators, cranes, bulldozers, etc. These construction machinery used for engineering construction are collectively referred to as construction machinery. Among them, the use of excavators is more common. The excavator is mainly composed of a walking device, a slewing device, a cab, a working device and a control (power) device. The power device generally uses a diesel engine as a power device, and a diesel engine is an internal combustion engine that uses diesel as fuel. The piston in the cylinder reciprocates to convert the chemical energy in the fuel into mechanical energy for driving the vehicle. It ha...

AI Technical Summary

Problems solved by technology

However, if the load is reduced too much, the working efficiency will be reduced, and the engine speed will be reduced, which will also reduce the efficiency. Therefore, it is necessary to control while reducing the load and speed. When the temperature of the engine returns to within 100°C, The current load and speed should be maintained so as not to affect the normal work to the greatest extent.

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