Regeneration control method for engineering plant

Abstract

The invention discloses a regeneration control method for an engineering plant, which is characterized in that: when the engineering plant is under a high-load operating state, the exhaust temperature of an engine is higher than an automatic regeneration temperature; then an engine controller automatically controls DPF to realize automatic regeneration; when the engineering plant is under a low-load operating state or idling at idle speed, the exhaust temperature of the engine is lower than the automatic regeneration temperature, and then the engine controller sends a signal to a main controller to enlarge the current of a power solenoid pilot actuated valve of a main hydraulic pump, improve the suction power of the main hydraulic pump, improve the exhaust temperature of the engine, and realize regeneration. The regeneration control method for the engineering plant leads the engineering plant to be capable of implementing automatic regeneration under various operating states without stopping, and improves the working efficiency of the engineering plant.

Description

technical field [0001] The invention relates to a power control method, in particular to a regeneration control method of engineering machinery. Background technique [0002] At present, in the fields of construction, water conservancy and other projects, various types of construction machinery have begun to be widely used, such as excavators, cranes, bulldozers, etc. These construction machinery used for engineering construction are collectively referred to as construction machinery. Construction machinery is mainly composed of walking device, slewing device, cab, working device and power device. The power device generally uses diesel engine as the power device. Diesel engine is an internal combustion engine that uses diesel as fuel. After burning fuel, it pushes the piston in the cylinder. It performs reciprocating motion to convert the chemical energy in the fuel into mechanical energy for driving the vehicle. It has the advantages of high thermal efficiency, relatively l...

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Problems solved by technology

[0004] Although the above exhaust gas purification system can effectively perform regeneration operation, construction machinery must be regenerated within the operation stop time, that is, construction machinery cannot be regenerated during light-load operation, and the operation must be stopped to perform regeneration, which will inevitably affect normal work. , leading to low operating efficiency. In addition, an additional electromagnetic switching valve is required during regeneration, and the cost also increases accordingly.

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