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A power machine smoke control method, device and power machine

A technology of power machinery and control method, applied in the field of power machinery, can solve problems such as engine response delay, inability to adjust external load, mismatch between engine power and load power, etc., and achieve matching effect

Active Publication Date: 2022-07-15
WEICHAI POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing smoke control method mainly reduces the smoke emission by controlling the engine, and cannot adjust the external load such as the hydraulic system. The same set of smoke emission parameters is used under any working condition, but only by The control of the engine to reduce the smoke emission will cause the mismatch between the engine power and the load power and the delay of the engine response

Method used

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  • A power machine smoke control method, device and power machine
  • A power machine smoke control method, device and power machine
  • A power machine smoke control method, device and power machine

Examples

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Embodiment 1

[0051] figure 1 It is a flow chart of a power machine smoke control method provided in the first embodiment of the present invention. The power machine includes a hydraulic system and an engine, and the hydraulic system includes a main pump. This embodiment can be applied to the field of power machinery. The method can be composed of Power machinery equipped with controls for execution, refer to figure 1 , the power mechanical smoke control method specifically includes the following steps:

[0052] Step 110: Acquire the rotational speed command of the engine, the demand flow of the main pump and the system pressure value of the main pump.

[0053]Specifically, the engine speed command may include the engine speed, the rising speed or the falling speed of the engine speed, etc. The engine speed command may be pre-stored in the control device equipped with the power machine. Specifically, the demand flow of the main pump is controlled by the outside of the power machine. For e...

Embodiment 2

[0063] figure 2 This is a flow chart of a power machine smoke control method provided in the second embodiment of the present invention. This embodiment can be built on the basis of the above-mentioned embodiments, and the method can be executed by a control device equipped with a power machine. Refer to figure 2 , the power mechanical smoke control method specifically includes the following steps:

[0064] Step 210: Acquire the rotational speed command of the engine, the demand flow of the main pump and the system pressure value of the main pump.

[0065] Step 220: If the rotational speed corresponding to the rotational speed command of the engine is in the decreasing period of rotational speed and / or the product of the demand flow of the main pump and the system pressure value of the main pump is less than the preset value, determine that the smoke emission condition of the power machine is normal emission. working condition.

[0066] Specifically, the rotational speed m...

Embodiment 3

[0079] Figure 4 This is a flowchart of a power machine smoke control method provided in Embodiment 3 of the present invention. This embodiment can be built on the basis of Embodiment 1. The method can be executed by a control device equipped with a power machine. Refer to Figure 4 , the power mechanical smoke control method specifically includes the following steps:

[0080] Step 310: Acquire the rotational speed command of the engine, the demand flow of the main pump and the system pressure value of the main pump.

[0081] Step 320: Determine the smoke emission condition of the power machine according to the engine speed command, the demand flow of the main pump and the system pressure value of the main pump, wherein the smoke emission condition includes normal emission condition and excessive emission condition.

[0082] Step 330 , if the smoke emission condition of the power machine is the over-standard emission condition, control and reduce the rising speed of the engin...

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Abstract

The embodiment of the present invention discloses a smoke control method, device and power machine of a power machine. The power machine includes a hydraulic system and an engine, and the hydraulic system includes a main pump. The smoke control method of the power machine includes: obtaining a rotational speed command of the engine , the demand flow of the main pump and the system pressure value of the main pump; determine the smoke emission conditions of the power machinery according to the engine speed command, the demand flow of the main pump and the system pressure value of the main pump, wherein the smoke emission conditions include normal Emission condition and over-standard emission condition; if it is determined that the smoke emission condition of power machinery is over-standard emission condition, control the rising speed of reducing engine power and reducing the rising speed of main pump power. The power machine smoke control method, device and power machine provided by the embodiments of the present invention can match the engine power with the load power under the premise of effectively controlling the smoke, and solve the problem of engine response delay.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of power machine control, and in particular, to a method, device and power machine for smoke control of power machines. Background technique [0002] In life and production, various vehicles such as excavators emit smoke when they are working or running. When the smoke emission is too high, the problem of excessive smoke emission will occur, so it is necessary to reliably control the smoke. [0003] At present, the existing smoke control methods mainly reduce smoke emission by controlling the engine, and cannot adjust external loads such as hydraulic systems. The same set of smoke emission parameters is used under any working condition, but only by The control of the engine to reduce the smoke emission will bring about the problem of the mismatch between the engine power and the load power and the delay of the engine response. SUMMARY OF THE INVENTION [0004] Embodiments of the pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F9/00E02F9/20E02F9/22
CPCE02F9/00E02F9/20E02F9/22E02F9/2203
Inventor 张西田崔成龙赵金光于鹏飞
Owner WEICHAI POWER CO LTD
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