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A Dynamic Diagnosis Method of Throttle Valve

A diagnostic method and throttle valve technology, applied in electrical control, combustion engine, engine control and other directions, can solve the problems of low real-time algorithm, inability to accurately diagnose throttle valve faults online, low control accuracy and operability, etc. The effect of timely feedback

Active Publication Date: 2020-10-09
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the control accuracy and operability of the above two methods are not high, and the real-time performance of the algorithm is low, so it cannot accurately diagnose the throttle fault on-line

Method used

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  • A Dynamic Diagnosis Method of Throttle Valve

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Embodiment Construction

[0044] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0045] Such as figure 1 As shown, the embodiment of the present invention provides a throttle valve dynamic diagnosis method, which includes the following steps:

[0046] Step S1, acquiring the target opening value of the throttle valve.

[0047] Step S2, obtaining the static deviation range value of the throttle valve according to the target opening value.

[0048] Step S3, obtaining the actual dynamic deviation limit value of the throttle valve.

[0049] Step S4, obtaining the position deviation range value of the throttle valve acc...

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Abstract

The invention discloses a dynamic diagnosis method of a throttle valve. The method includes the steps that the target opening value of the throttle valve is acquired; the static deviation range valueof the throttle valve is acquired according to the target opening value; the actual dynamic deviation limiting value of the throttle valve is acquired; the position deviation range value of the throttle valve is acquired according to the actual dynamic deviation limiting value and the static deviation range value; the opening error of the throttle valve is acquired; whether the opening error of the throttle valve is within the position deviation range value or not is judged; if not, it is determined that the throttle valve breaks down. By means of the dynamic diagnosis method of the throttle valve, the throttle valve is dynamically diagnosed under the condition without dependent on a direct current motor and other equipment, the working state of the throttle valve is detected in real time,and timely feedback generated when the fault occurs is achieved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a dynamic diagnosis method for a throttle valve. Background technique [0002] The electronic throttle is an important part of the electronic control system of the engine. The application of the throttle technology improves the power, economy and emission of the engine. Whether the throttle valve works normally directly affects the power and torque output of the engine. Therefore, it is particularly important to determine the working state of the throttle valve. [0003] At present, the existing diagnosis methods mainly include the detection and diagnosis method based on the throttle position sensor, the real-time diagnosis based on the throttle DC motor, and so on. [0004] However, the control accuracy and operability of the above two methods are not high, and the real-time performance of the algorithm is low, so the fault of the throttle valve cannot be accurately diagnos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/22
CPCF02D41/22Y02T10/40
Inventor 吴磊张新宇杜成磊张文明张焕岩肖海云李杰
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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