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Method and device for starting a drive system of a motor vehicle

A technology for driving systems and motor vehicles, applied to charging systems, engine components, combustion engines, etc., capable of solving complex signal processing, speed reduction, etc.

Active Publication Date: 2021-04-09
MAN TRUCK & BUS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this solution is that it is particularly adapted to the construction of certain fuel metering systems and requires relatively complex signal processing
[0005] A further disadvantage is that a rapid reduction in the rotational speed cannot always be achieved if the rotational speed is in the overrun range

Method used

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  • Method and device for starting a drive system of a motor vehicle
  • Method and device for starting a drive system of a motor vehicle

Examples

Experimental program
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Embodiment Construction

[0048] figure 1 The drive system of a commercial vehicle is shown in the form of a highly schematic block diagram. The drive system comprises a supercharged internal combustion engine 2 , usually a diesel engine, and associated therewith an electrified exhaust-gas turbocharger 10 also referred to hereinafter as ATL. The ATL 10 comprises a turbine 12 driven by the exhaust gases of the internal combustion engine 2 , which are fed to the turbine 12 by means of the exhaust line 5 b. The exhaust gas mixture then flows into the exhaust line 6 via the turbine outlet as far as the exhaust pipe and thus passes through an exhaust aftertreatment device (not shown), if present.

[0049] The turbine 12 is connected to the compressor 12 by means of a shaft 13 . Fresh air is fed to the compressor 11 by means of the compressor inlet line 4 . The compressor 11 compresses the charge air to be fed to the internal combustion engine 2 and thus increases the power of the internal combustion engi...

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PUM

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Abstract

The invention relates to a method and a device for starting a drive system of a motor vehicle. In particular, the invention relates to a method for starting a drive system of a motor vehicle with an internal combustion engine, in particular such a method for overspeed protection of the drive system. The invention also relates to a device implemented to perform such a method. According to a general aspect of the invention, the overspeed protection is activated after fulfillment (S1, S2) of at least one activation condition for activation of the overspeed protection of the drive system, thereby starting the generator mode of the electrified exhaust-gas turbocharger.

Description

technical field [0001] The invention relates to a method for starting a drive system of a motor vehicle with an internal combustion engine, in particular such a method for overspeed protection of the drive system. The invention also relates to a device arranged to carry out such a method. Background technique [0002] It is known from practice that under certain operating conditions of a motor vehicle, the thermodynamic coupling of the engine and the exhaust-gas turbocharger can lead to critical states of the exhaust-gas turbocharger, e.g. in hot exhaust and high In overspeed in the case of exhaust gas mass flow. When such an overspeed occurs, there is a risk of damage to the rotor of the exhaust-gas turbocharger, to the charge air system and in some cases to the internal combustion engine due to the excessive charge pressure and thus the peak combustion pressure. [0003] It is known from the prior art to detect such critical operating states by means of engine sensors (e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/22
CPCF02D41/22F02D41/221F02D2041/227F02D2200/0406F02D41/1446F02B37/10F02B37/14F02B37/24F02B39/10F02D31/006F02D41/0007F02M26/49Y02T10/12
Inventor A.帕彭海默A.佐默曼
Owner MAN TRUCK & BUS AG