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Operation control method for construction machine

A technology of construction machinery and operation control, applied in the direction of engine control, electrical control, mechanical equipment, etc., can solve problems such as reducing engine performance, increasing back pressure of exhaust muffler, reducing DPF performance, etc., to achieve the effect of delaying operation interruption and preventing damage

Pending Publication Date: 2021-05-11
DOOSAN INFRACORE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] On the other hand, the DPF accumulates soot (Soot) of particles produced by incomplete combustion of the engine
Such soot not only reduces the performance of the DPF, but also increases the back pressure of the exhaust muffler, which becomes the cause of reducing the performance of the engine.

Method used

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  • Operation control method for construction machine
  • Operation control method for construction machine
  • Operation control method for construction machine

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Embodiment Construction

[0022] In order to fully understand the present invention, preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The embodiments of the present invention can be modified in various ways, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided in order to more fully explain the present invention to those of ordinary skill in the art. Therefore, shapes and the like of elements in the drawings may be expressed exaggeratedly to emphasize clearer description. It should be noted that in each figure, the same components may be shown with the same reference numerals. Also, detailed descriptions of well-known functions and configurations that are judged to unnecessarily obscure the gist of the invention are omitted.

[0023] figure 1 It is a configuration diagram of the diesel engine 1 . Such as figure 1 As shown, a common ...

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Abstract

The present invention relates to an operation control method for a construction machine, comprising: a step for issuing a flameout signal for the construction machine by an operator; a confirmation step of confirming a safety condition for determining whether a delay operation interruption is required; a first temperature determination step for determining whether the temperature of the exhaust gas is equal to or greater than a predetermined temperature; a logic start-up step for delaying an operation interruption to prevent deterioration of the electrical component; a second temperature determination step of determining whether the temperature of the exhaust gas is lower than a predetermined temperature; and an operation interruption step for interrupting the operation, thereby providing the operation control method, which is capable of delaying the interruption of the operation so as to prevent the damage of the electrical components caused by the heat damage of the high-heat exhaust gas, even if the operation is shut down by the operator during the regeneration operation.

Description

technical field [0001] The present invention relates to an operation control method of construction machinery, and more specifically, relates to an operation control method of construction machinery capable of preventing damage caused by deterioration of electrical components such as sensors and modules. Background technique [0002] Construction machinery has a diesel engine and a hydraulic pump. The diesel engine outputs power to drive the hydraulic pump, and the hydraulic pump discharges working oil through a hydraulic circuit. Exhaust gas is inevitably emitted during driving of a diesel engine, and nitrogen oxides (NOx) are included in such exhaust gas. Such nitrogen oxides have a problem of adversely affecting atmospheric environmental pollution. Therefore, regulations on exhaust gas are being strengthened. Therefore, in order to cope with the strengthened exhaust gas regulations, the latest diesel engine vehicles install a particulate filter (DPF, diesel particulate fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/02F02D41/14F02D41/08
CPCF02D41/029F02D41/1446F02D41/08F01N3/023F02D29/04F02D41/042F01N9/002F01N2900/1602F01N2900/08Y02T10/40E02F9/2066F01N11/00F01N2550/00F01N2560/06
Inventor 金完颢
Owner DOOSAN INFRACORE CO LTD