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Dynamic diagnosis method of throttle valve

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

Active Publication Date: 2019-02-26
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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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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  • Dynamic diagnosis method of throttle valve

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Embodiment Construction

[0044] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be interpreted as a limit to the present invention.

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

[0046] Step S1: Obtain the target opening value of the throttle valve.

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

[0048] Step S3: Obtain the actual dynamic deviation limit of the throttle.

[0049] Step S4: Obtain the position deviation range value of the throttle valve a...

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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, and in particular to a method for dynamic diagnosis of a throttle valve. Background technique [0002] The electronic throttle is an important part of the engine's electronic control system. The use of throttle technology improves the engine's power, economy and emissions. Whether the throttle valve works normally or not directly affects the output of the engine's power and torque. Therefore, it is particularly important to determine the operating 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, and the real-time diagnosis based on the throttle valve DC motor. [0004] However, the control accuracy and operability of the above two methods are not high, the real-time performance of the algorithm is low, and the throttle failure can not be accurately diagnosed online. Summary of the...

Claims

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Application Information

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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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