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Method for starting an internal combustion engine

A technology of internal combustion engine and starting process, applied in the direction of internal combustion piston engine, motor starting with engine, engine components, etc., can solve the problems of mechanical load of starter, unnecessary internal combustion engine, starting and other problems, and achieve the effect of reducing compression work

Active Publication Date: 2018-07-31
BAYERISCHE MOTOREN WERKE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a complete suction and compression is not necessary for the starting of the internal combustion engine and leads more to a considerable load on the starter mechanics and to an acoustically and vibratingly noticeable start.

Method used

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  • Method for starting an internal combustion engine

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] figure 1 An internal combustion engine 1 is shown. The internal combustion engine 1 includes a cylinder 4 in which a piston 3 is movable. Intake valves 5 of internal combustion engine 1 can be actuated via camshaft 2 .

[0023] It is provided that when internal combustion engine 1 is started, all cylinders 4 of internal combustion engine 1 are decompressed. To this end, the decompression, in particular the degree of the decompression, can be adjusted in various ways. In particular it is therefore provided that the intake valve 5 is actuated by variable valve control in such a way that the valve lift is adjusted between 0 mm and 2 mm, preferably between 0 mm and 1 mm. Alternatively or additionally, it is provided that the camshaft 2 is adjusted in the direction of the advanced intake angular distance by means of a camshaft adjustment, in particular by means of a phase adjuster. In this way, the intake valve 5 is closed before the piston 3 reaches bottom dead center. ...

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PUM

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Abstract

The invention relates to a method for starting or stopping an internal combustion engine, characterized in that during the starting or stopping procedure, at least one cylinder of the internal combustion engine undergoes decompression as a result of varying a valve lift of an inlet valve.

Description

technical field [0001] The invention relates to a method for starting an internal combustion engine. Furthermore, the invention relates to a computer program product for carrying out the method and a controller for carrying out the method. Background technique [0002] It is known from the prior art to start an internal combustion engine by means of a starter. In this case, the cylinders of the internal combustion engine must draw in and compress fresh air or a fresh air-fuel mixture according to their respective strokes. However, such a complete intake and compression is not necessary for starting the internal combustion engine and rather leads to a considerable load on the starter mechanics and to an acoustically and vibratingly pronounced start. Contents of the invention [0003] The object of the present invention is to provide a method for starting an internal combustion engine which, while being simple and cost-effective to use, allows a safe, reliable and low-vibr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N19/00F02D41/04F01L13/00
CPCF01L1/34F01L13/08F01L2800/01F01L2820/01F02D13/0226F02D13/0276F02D41/04F02D41/042F02D41/062F02D2041/001F02N11/0803F02N11/0814F02N19/004F02N19/005F02N2019/008F02N2200/023F16H61/0267F16H61/029F16H2061/0279Y02T10/12Y02T10/40B60W30/18054B60W30/192B60W2030/18081F01L2800/03
Inventor D·瓦巴尔斯
Owner BAYERISCHE MOTOREN WERKE AG