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Method for controlling an automatic switching off process for an internal combustion engine

一种自动切断、内燃机的技术，应用在发动机的起动、内燃活塞发动机、发动机用电动机起动等方向，能够解决客户抱怨等问题

Active Publication Date: 2010-03-03
BAYERISCHE MOTOREN WERKE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can lead to customer complaints if the internal combustion engine is cut off and then cannot be restarted

Method used

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  • Method for controlling an automatic switching off process for an internal combustion engine

Examples

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Embodiment Construction

[0018] It is assumed here that a motor vehicle suitable for carrying out the flow diagram is equipped with a so-called "engine-start-stop-automatic device" for automatically stopping or restarting the internal combustion engine. Additionally, the motor vehicle is equipped with a hybrid drive system comprising an internal combustion engine and an electric motor for driving the motor vehicle, the two drive units being selectively available for driving. The algorithm shown in the flowchart can be implemented in a controller provided for this purpose or in the engine controller.

[0019] The flowchart for the method according to the invention starts in step 10 . There, it is determined by analyzing the crankshaft speed kw whether the internal combustion engine is started or is to be started (beginning of starting), ie whether St_BK is present. The start of an attempt to start the internal combustion engine St_BK is detected as soon as the crankshaft speed increases from zero (sta...

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PUM

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Abstract

The invention relates to a method for controlling an automatic switching off process for an internal combustion engine in a motor vehicle, wherein, depending on given operating conditions, an automatic switching off of the internal combustion engine is prevented. According to the invention, an automatic switching off of the internal combustion engine is prevented if the internal combustion enginehas been started by towing within the given operating cycle or within a given number of previous operating cycles. A tow-start is recognised by analysis of a signal giving the activity or non-activityof the starter.

Description

technical field [0001] The invention relates to a method for controlling an automatic shut-off process of an internal combustion engine of a motor vehicle according to the preamble of claim 1 . Background technique [0002] Various methods and systems have been developed and are already in use today for reducing fuel consumption and pollutant emissions, which automatically switch off the internal combustion engine of the motor vehicle under certain preconditions or when predetermined switch conditions exist, and in the The internal combustion engine of the motor vehicle is automatically switched on again when the predetermined switch-on condition is present. Such methods and systems or start-stop devices are primarily suitable for city traffic in order to reduce fuel consumption, since in city traffic traffic lights are frequently encountered or stops due to traffic are common and the operation of the internal combustion engine is not necessary. [0003] Thus, an automatic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N11/08F02N99/00
CPCF02N11/0825Y02T10/48F02N11/0848Y02T10/40
Inventor D·阿本德罗特W·魏格尔P·施特雷勒
Owner BAYERISCHE MOTOREN WERKE AG
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