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Construction machine control device and control method

A technology for construction machinery and control devices, applied in engine control, mechanical equipment, transmission control, etc., can solve problems such as waste of fuel, low fuel efficiency, slow reverse rotation speed, etc., to maintain operating performance, improve fuel efficiency, The effect of preventing the swing speed from being too slow

Active Publication Date: 2021-06-11
DOOSAN INFRACORE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore there is a possibility of wasting fuel when the existing excavator control method is in the eversion mode
[0023] On the other hand, when the load is determined to be low during descent and Boom down Swing mode, it is possible to set the engine speed too low
Therefore, the existing excavator control method has the problem that the reverse rotation speed of the upper body is too slow due to the decrease of the pump output.
[0024] Therefore, although the existing control device and control method for construction machinery can adjust and control the engine speed according to the fluctuation of the load, it cannot properly set the engine speed when the pump output needs to be increased or decreased, so the pump output is too low or the fuel efficiency is low. or issues with specific drives running noticeably slower

Method used

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  • Construction machine control device and control method
  • Construction machine control device and control method
  • Construction machine control device and control method

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Embodiment Construction

[0069] Advantages and features of the present invention and the method of implementing the methods can be more apparent from the accompanying drawings and the embodiments described later.

[0070] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, it is to be understood that the invention is not limited to the embodiments disclosed below, but may be implemented in various ways, the present embodiment is intended to improve the disclosure of the present invention, and the present invention may have different examples Many variations. However, in order to avoid the point of the present invention becomes blurred, in some embodiments, the detailed description thereof and the specific illustration will be omitted. Moreover, the drawings are used to understand the present invention, and therefore not shown in the actual schematic, and the size of the constituent elements may be extensive.

[0071] Additionally, first, s...

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Abstract

The invention relates to a control device and a control method of a construction machine. According to the control device and control method for a construction machine according to an example of the present invention, the output of the control device can be controlled by adjusting the engine speed according to the load applied to the construction machine. According to the control device and control method for a construction machine according to an example of the present invention, increasing the pump output at an appropriate time can maintain good work performance, and the fuel efficiency can be improved by reducing the engine speed in a low-load work mode.

Description

Technical field [0001] The present invention relates to a control device and a control method of construction machine, depending on the output of the engine speed to control the engine speed to control the output of the engine speed. Background technique [0002] Usually the construction machine has an engine and hydraulic system. Engine output power. [0003] The hydraulic system can include a joystick, a pump, a main control valve, and a driver. [0004] The joystick may be operated by the purpose of the operator, and a pilot signal is formed based on the degree of displacement of the operation. [0005] The pump is operated by the power and discharges high pressure working oil, and the working oil is provided to the main control valve. Additionally, there can be a plurality of hydraulic pumps. [0006] The main control valve has a plurality of valve units, and the valve unit has a spool. Moreover, the valve unit is connected to a particular drive. Moreover, the spool in the va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F9/22
CPCE02F9/22E02F9/2203E02F9/2235E02F9/2246E02F9/2292E02F9/2296F15B2211/20523F15B2211/20546F15B2211/20576F15B2211/275F15B2211/6309F15B2211/633F15B2211/6346F15B2211/6651F16H61/42F16H61/465F02D29/04E02F9/2066F02D29/02F02D35/00
Inventor 曹伊亨孙元旋宋炳允房在锡安敏河
Owner DOOSAN INFRACORE CO LTD
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