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Control device and control method for construction machine

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: 2017-07-14
DOOSAN INFRACORE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Control device and control method for construction machine
  • Control device and control method for construction machine
  • Control device and control method for construction machine

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Embodiment Construction

[0069] The advantages and features of the present invention and the method for achieving them will become more apparent by referring to the accompanying drawings and the detailed description of the embodiments to be described later.

[0070] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it should be understood that the present invention is not limited to the embodiments disclosed below, but can be implemented in various ways. This embodiment is only used to improve the disclosure of the present invention, and the present invention may be different from the currently described embodiments. of various changes. However, in order to avoid obscuring the gist of the present invention, in some embodiments, detailed descriptions and specific illustrations thereof are omitted. In addition, since the drawings are used for understanding the present invention, they are not shown on an actual scale, and ...

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Abstract

The present disclosure relates to a control device and a control method for a construction machine. The control device and the control method for the construction machine according to the exemplary embodiment of the present disclosure may adjust an engine revolutions per minute (rpm) according to a load applied to the construction machine, thereby controlling an output of equipment. In the control device and the control method for the construction machine according to the exemplary embodiment of the present disclosure, an output of a pump is increased at an appropriate time, so that good operation performance may be maintained, and in the case of an operation pattern, in which a load is low, the engine rpm is adjusted to be decreased, thereby improving fuel efficiency.

Description

technical field [0001] The invention relates to a control device and a control method of a construction machine, which control the output of the device by adjusting the engine speed according to the load acting on the construction machine. Background technique [0002] Usually construction machinery has an engine and a hydraulic system. Engine output power. [0003] The hydraulic system may include a joystick, a pump, a main control valve, and a driver. [0004] The joystick can be operated according to the operator's purpose, and a pilot signal is formed according to the degree of displacement of the operation. [0005] The pump operates by the power and discharges high-pressure hydraulic oil, and the hydraulic oil is supplied to the main control valve. Additionally, multiple hydraulic pumps may be provided. [0006] The main control valve includes a plurality of valve units, and each of the valve units includes a valve body. Furthermore, the valve units are respective...

Claims

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Application Information

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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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