Load reproduction and extrapolation method of construction machinery internal combustion engine
A technology for construction machinery and internal combustion engines, applied in counting mechanisms/items, computer-aided design, instruments, etc., can solve problems such as difficulty in extrapolating extreme loads, achieve extensive engineering application value, improve accuracy, and shorten the time of synchronous counting. Effect
Active Publication Date: 2022-06-24
JILIN UNIV
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The purpose of the present invention is to provide a load reproduction and extrapolation method of an internal combustion engine of construction machinery to solve the problems of simultaneous reproduction of the internal combustion engine speed and torque load and difficulty in extrapolating extreme loads
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0078] The invention discloses a method for reproducing and extrapolating the load of an internal combustion engine of a construction machinery, which selects the dual parameters of torque and rotational speed to reproduce and extrapolate the internal combustion engine load at the same time.
[0079] The present invention will be further described below with reference to the embodiments and the accompanying drawings, but the present invention is not limited.
[0080] The method for reproducing and extrapolating the load of a construction machinery internal combustion engine provided by the present invention takes a certain type of excavator as an example, and collects a sample of the internal combustion engine load with a typical working time of one hour, that is, a time series of torque and rotational speed loads, and the sampling frequency is 1 Hz. Taking the reproduction and extrapolation of torque and speed load as an example, the process of load reproduction and extrapolat...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for reappearing and extrapolating the load of an internal combustion engine of construction machinery, belonging to the technical field of load spectrum compilation of an internal combustion engine of construction machinery. The method includes the following steps: (1) synchronous peak and valley value extraction of torque and rotational speed; (3) Torque and speed data resampling; (4) Torque and speed data synchronous counting; (5) Threshold value selection; (6) Medium and low load range ratio extrapolation; (7) POT model extreme value Extrapolation; (8) load synchronous counting after extreme value extrapolation. The invention solves the problem that it is difficult to reproduce the internal combustion engine torque and rotational speed dual parameter load synchronously in the typical operation stage of construction machinery. The method performs proportional extrapolation on the low and medium loads of the internal combustion engine, and performs extreme value extrapolation of the POT model on the extreme load, which improves the Accurate reproduction and extrapolation of extreme loads for internal combustion engines while being simple and applicable.
Description
technical field [0001] The invention relates to the technical field of compiling a load spectrum of a construction machinery internal combustion engine, in particular to a method for reproducing and extrapolating the load of a construction machinery internal combustion engine. Background technique [0002] Construction machinery (such as loaders and excavators) has the characteristics of harsh environment, changeable working conditions, and long continuous working time during the working process, which poses a great challenge to the reliability and durability of the internal combustion engine of construction machinery. Therefore, it is of great significance to reproduce the load of the internal combustion engine of construction machinery and extrapolate the whole life of the internal combustion engine of construction machinery, and the reproduced internal combustion engine load can also be used for the reliability analysis of the internal combustion engine parts, such as cran...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F30/20G06M1/276G06F119/12
CPCG06F30/17G06F30/20G06M1/276G06F2119/12
Inventor 刘超勤王继新苏丽达沈雨鹰
Owner JILIN UNIV