Alarm control system and method for fuel oil system of excavator

Abstract

The invention discloses an alarm control system and an alarm control method for a fuel oil system of an excavator. The fuel oil system comprises a fuel oil tank, a pre-filter, a high-pressure oil pump and a fine filter. The alarm control system is characterized in that: a pressure sensor is arranged at a fine filter outlet, the signal output end of the pressure sensor is connected with the input end of a main controller, the output end of the main controller is connected with a display device and a GPS transmission module through CAN buses respectively, and the GPS transmission module is connected with a remote monitoring locking control center. The pressure sensor detects the pressure condition and transmits information to the main controller, the main controller processes the information and then transmits the processed information to the display device and the GPS transmission module respectively, the GPS transmission module is connected with the remote monitoring locking control center, and the remote monitoring locking control center prompts a user so as to effectively monitor the blockage of the fuel oil system and prevent the blockage from causing engine fault and affectingthe work of the excavator.

Description

technical field [0001] The invention relates to an alarm control system and method, in particular to an alarm control system used for the fuel system 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. A diesel engine is an internal combustion engine that uses diesel as fuel. Promote the reciprocating motion of the piston in the cylinder to convert the chemical energy in the fuel into mechanical e...

AI Technical Summary

Problems solved by technology

During the use of the excavator, the fuel filter needs to be replaced or cleaned periodically. Otherwise, as the working time increases, the impurities gradually accumulated on the filter layer of the filter will cause blockage, resulting in insufficient fuel supply to the engine and exhaust Symptoms such as tracheal blast

[0004] At present, in the excavator fuel system, the clogging of the fuel filter is not monitored. Although a small part of it is monitored, it is only installed on the fuel filter with a warning light or a pressure indicator, which cannot be effectively monitored.

Nowadays, in order to meet the requirements of environmental protection, excavators use EFI engines one after another. EFI engines are usually equipped with two-stage filters, pre-filter and fine filter, and EFI generators have higher requirements for fuel quality, so the fuel system cannot be blocked. If the situation is effectively monitored, the following problems will occur: ① There is no fuel system clogging alarm on the excavator, and the user cannot replace the fuel filter element in time, which will lead to failure of precision parts of the EFI engine (such as impurities in the fuel system that damage the fuel nozzle, etc.) or the engine Due to the high cost of these precision components, once a failure occurs, it will not only cause downtime for the customer and delay the construction period, but also expensive maintenance; Due to the influence of noise, etc., it is difficult for the operator to detect the fault in time. After the fault is found, it is very likely that the fuel injector of the engine has been damaged; ③ After the fuel system of the excavator is blocked, the engine power drops, and there is no alarm prompt, so it is difficult for the service personnel to find out the cause of the fault , affecting maintenance time and causing customer complaints

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