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Starter relay stuck diagnosis method and system

A diagnostic method and starter technology, applied in the field of vehicles, can solve problems such as inability to identify, and achieve the effect of increasing safety

Active Publication Date: 2019-01-25
VITESCO AUTOMOTIVE ELECTRONICS (CHANGCHUN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the starter relay is stuck mechanically, it cannot be identified by electrical diagnostics

Method used

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  • Starter relay stuck diagnosis method and system
  • Starter relay stuck diagnosis method and system
  • Starter relay stuck diagnosis method and system

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Embodiment Construction

[0011] Embodiments of the present invention are described below with reference to the drawings. In the following description, numerous specific details are set forth in order to enable those skilled in the art to more fully understand and practice the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. Furthermore, it should be understood that the invention is not limited to the particular embodiments described. Rather, it is conceivable to implement the invention in any combination of the features and elements described below, regardless of whether they relate to different embodiments. Accordingly, the following aspects, features, embodiments and advantages are by way of illustration only and should not be considered elements or limitations of the claims unless explicitly stated in the claims.

[0012] The basic principle of the present invention is to use two starter ...

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Abstract

The invention provides a deadlocking diagnosis method and system of starter relays. The two starter relays are connected with a starter in series. The method comprises the following steps that when the first starter relay is disconnected, the second starter relay is closed; the voltage of the starter is read; and if the voltage between the two ends of the starter is not zero, it is determined that a deadlocking fault occurs in the first starter relay.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to a stuck diagnosis method and system for a starter relay of a vehicle engine. Background technique [0002] The current starter relay diagnosis is based on the electrical diagnosis of the relay itself, such as short circuit to power supply, short circuit to ground or open circuit diagnosis. [0003] A starter relay is generally used in traditional models for the control of the starter. However, due to the introduction of the start-stop function, many OEMs currently use two low-side driven starter relays to realize the redundancy of starter control and improve safety. However, most of the systems that use two starter relays for starter control only use the above-mentioned three electrical diagnoses. If the starter relay is stuck mechanically, it cannot be identified through electrical diagnostics. [0004] It can be seen that there is a need in the art for a technical solution capable of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/327
Inventor 董威刘宇孙宇兴
Owner VITESCO AUTOMOTIVE ELECTRONICS (CHANGCHUN) CO LTD