Method and device for monitoring and processing tail gas of excavators

Abstract

The invention discloses a method for monitoring and processing the tail gas of excavators. A sensor in a particulate filter collects information and transmits the information to a main controller through an engine controller; and the main controller receives the information and transmits the information to a display device. The method is characterized in that the preset step is carried out in advance; the starting pressure and finishing pressure of the regeneration control is set by detecting an excavator; when the engine controller detects that the difference of the inlet pressure and the outlet pressure of the particulate filter is more than the preset start pressure, and the temperature of the particulate filter is not less than 250 DEG C, automatic regeneration is carried out; and when the difference of the inlet pressure and the outlet pressure of the particulate filter is more than the preset start pressure, and the temperature of the particulate filter is less than 250 DEG C, a manual regeneration switch is turned on, the main controller improves the absorbed power of a main pump, increases the output load of an engine to increase the exhaust temperature of the engine, and the manual regeneration is carried out. The invention can effectively monitor and process the particulate filter, and avoid from impacting the whole machine to work due to the damage of the particulate filter.

Description

technical field [0001] The invention relates to a monitoring method and device for an excavator, in particular to a method and device for monitoring and processing tail gas of an excavator. Background technique [0002] At present, in the fields of construction, water conservancy and other engineering, various types of construction machinery are widely used, such as excavators, cranes, bulldozers, etc. These construction machinery used for engineering construction are collectively referred to as construction machinery, especially excavators. Use is more common. The excavator is mainly composed of a walking device, a slewing device, a cab, a working device and a power device. The power device generally uses a diesel engine as a power device. A diesel engine is an internal combustion engine that uses diesel as fuel. The piston moves back and forth to convert the chemical energy in the fuel into mechanical energy for driving the vehicle. It has the advantages of high thermal e...

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Problems solved by technology

[0004] Since the particulate filter needs to be periodically regenerated to remove the trapped particles during use, it is necessary to detect and control the working condition of the particulate filter, because the normal operation of the particulate filter directly affects the exhaust emission of the diesel engine Quality, the more common practice at present is to install alarm lights, but the alarm lights cannot effectively reflect the specific working conditions of the particulate filter, and the operator cannot timely and accurately grasp the working conditions of the particulate filter to perform corresponding operations, which may easily lead to the occurrence of particulate filters. Carbon deposition and exhaust blockage, the particles discharged with the exhaust may also form secondary pollution

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