國Ⅵ車型泄漏診斷誤報問題研究及優(yōu)化

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【摘  要】文章介紹國Ⅵ某燃油車由于DTESK進行燃油泄漏診斷會產(chǎn)生誤報、漏報等診斷問題，通過從燃油系統(tǒng)硬件和標定策略兩方面進行分析，受限于周期及費用因素，無法進行燃油系統(tǒng)硬件更改，故采用增加標定策略來規(guī)避誤報風險，并經(jīng)過多車型多次數(shù)試驗驗證，可以有效解決誤報故障的問題。

【關(guān)鍵詞】燃油壓力梯度;泄漏診斷;DTESK方案

中圖分類號：U463.6    文獻標識碼：A    文章編號：1003-8639（ 2024 ）05-0068-02

Strategy Optimization of Leakage Diagnosis False Positive Problem on CN6 vehicle

YANG Yuchen，ZHANG Pengfei，WEI Shouqi，LIN Wanguo，ZHOU Wei，ZHAO Zhongnan

（FAW Co.，Ltd.，Changchun 130012，China）

【Abstract】This paper introduces the CN6 vehicle caused fuel leakage diagnostic problems such as false positives by DTESK. Through analyzing from two aspects of fuel system hardware and calibration strategy，because of project period and cost factors，we can't change fuel system hardware .The calibration strategy is increased to avoid the risk of false positives. The calibration strategy can effectively solve the problem of false positives after many vehicles and many times test.

【Key words】gradient of fuel pressure;leakage diagnosis;DTESK programme

作者簡介

楊雨晨（1991—），男，工程師，主要從事電控系統(tǒng)開發(fā)及標定工作。（剩余2618字）