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Internal-combustion engine starting method

A starting method and technology of internal combustion engines, applied to the starting of engines, motor vehicles, machines/engines, etc., can solve the problems of prolonging the starting phase, increasing fuel consumption, and not optimal air-fuel mixture, etc., to achieve improved starting performance, Reliable starting and the effect of reducing the target speed

Inactive Publication Date: 2012-09-05
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This precontrol has its disadvantages: the air-fuel mixture is often not optimal, which prolongs the start-up phase on the one hand and increases fuel consumption on the other hand

Method used

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  • Internal-combustion engine starting method
  • Internal-combustion engine starting method
  • Internal-combustion engine starting method

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Embodiment Construction

[0030] figure 1A motor vehicle 1 with an internal combustion engine 2 and a control unit 3 is schematically shown in FIG. The internal combustion engine 2 has cylinders 4 which are connected to an intake manifold 5 and an exhaust system 9 . Arranged in the intake line 5 is a fuel injection valve 6 which is connected via a fuel line 7 to a fuel storage container 8 . Injection valve 6 is connected to control unit 3 via a signal line 18 .

[0031] The exhaust system 9 contains an exhaust gas purification device, in particular a catalyst 10 . A sensor for determining the exhaust gas quality, in particular a lambda probe (not shown in the figure), is arranged in the exhaust system 9 and is connected to the control device 3 via a signal line 11 .

[0032] An electric motor 12 is associated with internal combustion engine 2 . In particular, the electric motor 12 can also be part of a hybrid drive. The electric motor 12 is connected to the control unit 3 via a signal line 13 .

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Abstract

In order to achieve a safe, reliable and best burning of the waste gas at the burning stage (22)-when starting the internal combustion engine, the follow scheme is provided: the internal combustion engine is made to a target rotary speed by a motor at the traction stage (21), and the target rotary speed (23) is over the known start rotary speed (24) and is approximately equal to the idle rotary speed of the internal combustion speed. After the speed is over the start rotary speed (24), first, the mixture concentration (26) must be determined, and the practical status of a wall film must be considered. The combustion of the fuel mete and in the burning stage (22) can be realized only when the target rotary speed (23) is reached. Therefore, the fuel mete can be realized on the condition of the determined mixture concentration (26) after the speed is over the start rotary speed (24).

Description

technical field [0001] The invention relates to a method for starting an internal combustion engine, according to which, after a stop phase, an electric motor is activated and the internal combustion engine is brought to a starting speed by means of this electric motor. [0002] Furthermore, the invention relates to an internal combustion engine and a control device for controlling and regulating the internal combustion engine, to which an electric motor can be activated after a stop phase is associated, with which the internal combustion engine can be brought to a starting speed. [0003] Furthermore, the invention relates to a computer program which can be run on a computing device, in particular a control device for the control and regulation of an internal combustion engine. Background technique [0004] It is well known that components of an internal combustion engine are started by means of an electric motor known as a starter. Here, the internal combustion engine is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02N17/00F02N99/00
CPCB60W20/00Y02T10/6286F02D41/047F02N2300/102B60W2510/0676B60W2710/0622B60W10/06B60W2510/244F02D41/062B60W2710/0644B60L2240/445B60W10/08Y02T10/62B60K2006/268B60W20/10
Inventor K·克洛普克J·沃伯R·韦斯M·斯特雷布N·A·玛丽亚彭K·-B·勒德尔J·-M·T·德琼P·-Y·克雷平M·沃茨M·迪特里奇
Owner ROBERT BOSCH GMBH
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