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Method for managing the operation of a starter of a heat engine in order to prevent possible overheating at startup

A heat engine and starter technology, applied in the method and system, and the field of motor vehicles, can solve problems such as critical temperature hazards of starters, and achieve the effect of ensuring starting

Active Publication Date: 2016-11-09
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for this technology, the implementation of the strategy of disabling the auto-stop and auto-restart functions is limited in consideration of the extreme temperature limits allowed by the starter
This means that disabling this feature could lead to a potentially hazardous starter motor critical temperature

Method used

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  • Method for managing the operation of a starter of a heat engine in order to prevent possible overheating at startup
  • Method for managing the operation of a starter of a heat engine in order to prevent possible overheating at startup
  • Method for managing the operation of a starter of a heat engine in order to prevent possible overheating at startup

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Embodiment Construction

[0038] It is understood that the embodiments described hereafter also relate to starters, alternator starters and, more generally, to all devices capable of starting / restarting the heat engine of a motor vehicle.

[0039] figure 1 A system is shown in , which predicts the remaining activation time of a starter before reaching a critical temperature corresponding to overheating of the starter. In this system, the first module 1 includes a pre-established analytical model of the thermal variation of the starter. The characteristic parameters of this model are thermal time constants and / or coefficients that model the heat loss of the starter and represent its heat generation. These parameters vary over time according to the temperature of the starter. Advantageously, all the characteristic parameters of this model are calculated by the first module 1 according to the following inputs:

[0040] - temperature information 101T related to the thermal state of the heat engine co ,...

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Abstract

A method for managing the operation of a starter configured to start a heat engine comprising: a step of determining a first temperature value; a step of determining thermal coefficients corresponding to the first temperature value of a pre-established thermal model describing the development over time of the temperature at said point of the starter; a step of calculating the time remaining for the temperature at a point of the starter to reach a second temperature value higher than the first temperature value, on the basis of the pre-established thermal model; and a step of inhibiting the starter, at least for a predefined period of time, when said remaining time is less than a predefined period of time.

Description

technical field [0001] The invention relates to the thermal field of starters in motor vehicles. [0002] More specifically, the present invention relates to a method and system that allow prediction of the time remaining for starter activation / operation prior to possible overheating. The invention also relates to a motor vehicle equipped with such a system. Background technique [0003] The temperature management of starter motors in motor vehicles constitutes a major challenge for manufacturers. Typically, starter motors can become intensely hot during the starting and restarting phases of the vehicle. Prolonging the activation time of the starter causes a large increase in its temperature, which risks affecting its operation and / or its life. This risk is also more in line with vehicles equipped with an automatic stop and restart system (also denoted "stop and start" system according to English terminology). In this system, after the vehicle and its engine have stopped...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N11/10F02N11/08H02P29/00H02P29/02H02K11/00
CPCF02N11/0825F02N11/10F02N2200/023F02N2200/045F02N2200/061F02N2200/122F02N2300/2006F02N2300/2008F02N2300/2011H02P29/02H02P29/60Y02T10/40
Inventor 扬妮克·伯彻翁迈克尔·莫尔内奥雷利安·马利特
Owner PEZHO SITROEN AUTOMOBILS SA
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