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Engine characteristic curve converting method and engine characteristic curve converting device

A characteristic curve and engine technology, applied in the field of image processing, can solve the problems of large conversion error, low efficiency, and manual participation of universal characteristic curves, and achieve the effect of simple implementation and high recognition accuracy.

Inactive Publication Date: 2012-08-01
ZOOMLION HEAVY IND CO LTD
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  • Abstract
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Problems solved by technology

[0009] The present invention provides a method and device for transforming engine characteristic curves, which are used to solve the problems in the prior art that manual participation is required when transforming universal characteristic curves, large transformation errors and low efficiency

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  • Engine characteristic curve converting method and engine characteristic curve converting device
  • Engine characteristic curve converting method and engine characteristic curve converting device
  • Engine characteristic curve converting method and engine characteristic curve converting device

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Embodiment Construction

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer and clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0026] The embodiment of the present invention provides an engine characteristic curve conversion method, which can conveniently, quickly and accurately digitize the universal characteristic curve of the engine, and provide a strong basis for the prediction of power performance and fuel economy of the whole vehicle, as well as product design and selection. Its process is as follows figure 1 shown, including the following steps:

[0027] Step S11: Obtain a characteristic curve image of the engine characteristic curve to be processed. ...

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Abstract

The invention discloses an engine characteristic curve converting method and an engine characteristic curve converting device. The method includes steps of obtaining a characteristic curve image of an engine characteristic curve to be processed and performing binarization processing for the characteristic curve image so as to obtain a binarization image; reading image coordinate system coordinates of a selected characteristic point and universal characteristic coordinate system coordinates from the characteristic curve image, and determining a conversion coefficient of the image coordinate system coordinates and the universal characteristic coordinate system coordinates; and determining image coordinate system coordinate values of all coordinate points in a universal characteristic curve coordinate system according to the determined conversion coefficient, and recording pixel values of coordinate values of image coordinate systems to obtain engine characteristic curve data. The characteristic curve is processed by the aid of a computer image processing program, the characteristic curve data are obtained, implementation is simple and convenient, and recognition accuracy is high.

Description

technical field [0001] The present application relates to the technical field of image processing, in particular to a method and device for converting an engine characteristic curve. Background technique [0002] When developing, designing, and selecting engines for automobiles and construction machinery, it is necessary to use the engine universal characteristic data of the engine to predict the power and fuel economy of the engine. Under normal circumstances, engine manufacturing chronicles provide engine universal characteristic curve graphs without specific data, and the digitization of engine universal characteristic curve graphs to obtain universal characteristic data is often used to match the engine with the transmission system and operating system, and predict the entire vehicle The data necessary for power and economy, which leads to the unsatisfied demand for universal characteristic data during use. [0003] At present, the commonly used ways to convert universa...

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Application Information

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IPC IPC(8): G06T3/00
Inventor 夏鄂周润珈涂宏斌张迁钟柳芳
Owner ZOOMLION HEAVY IND CO LTD
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