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An automobile engine fault diagnosis system

A fault diagnosis system and automobile engine technology, which is applied in the direction of engine testing, internal combustion engine testing, machine/structural component testing, etc., can solve problems such as difficulty in development and high cost, complex engine structural design, and difficult diagnostic techniques, etc., to achieve simplification Effects of maintenance cost and labor cost, reduction of maintenance cost and labor cost, and labor cost saving

Inactive Publication Date: 2018-12-07
广州小虎汽车信息技术有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structural design of the engine itself is very complicated, and the difficulty and cost of development are also quite large; and because of the need to consider matching various types of automotive engine ECU communication protocols and diagnostic protocols, etc., its complex diagnostic technology is already very difficult
This is also the inherent defect of the current vehicle fault diagnosis instrument.

Method used

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  • An automobile engine fault diagnosis system

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Embodiment 1

[0011] Such as figure 1 As shown, it is necessary to collect the relevant vehicle condition data of the automobile engine first, first obtain the engine water temperature, and initially judge whether the engine water temperature is within the normal range, if it is within the normal range, then obtain the engine speed, engine oil temperature, cylinder pressure, and engine oil filling volume. Comprehensive calculation, after the result is obtained, the original factory data is matched, calculation and derivation are performed on the result, the fault phenomenon (faulty or not) is proposed, and the diagnosis result, maintenance method and solution are generated. If the engine water temperature is in an abnormal state, the comprehensive calculation will be carried out through the coolant freezing point, fan speed, water tank performance, thermostat performance, timing advance angle, intercooler, and three-way catalytic exhaust pressure. Data matching, calculate and deduce based o...

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Abstract

The invention discloses an automobile engine fault diagnosis system which comprises a data acquisition module, a storage module connected with the data acquisition module, a data matching module connected with the storage module, a fault calculation derivation module connected with the data matching module, a display module connected to the storage module and the communication modules connected between the data acquisition module and the storage module, between the storage module and the data matching module, between the data matching module and the fault calculation derivation module and between the storage module and the display module. The system of the invention has effects of automatic detection, time saving and labor cost saving.

Description

technical field [0001] The invention belongs to the field of automobile maintenance, in particular to an automobile engine fault diagnosis system. Background technique [0002] With the rapid development of social economy and the gradual renewal of people's consumption concepts, automobiles have become an indispensable means of transportation in modern society. The wide application of automotive electronic control systems has improved the safety, power, economy and emission performance of automobiles, making automobiles develop in the direction of intelligent control. Various automobile engines are equipped with a number of sensors to collect various operating data of the engine, such as a series of data such as water temperature, air flow, throttle opening, and entry temperature, and these data are input to the ECU of the engine On the electronic control unit, the engine ECU can control the ignition, fuel injection, acceleration and other working conditions of the car acco...

Claims

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Application Information

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IPC IPC(8): G01M15/02G01M15/05
CPCG01M15/02G01M15/05
Inventor 冯纪方
Owner 广州小虎汽车信息技术有限公司
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