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Components of the throttle device for controlling and/or regulating engine braking operation

A technology of engine braking and throttling devices, which is applied in the direction of engine components, engine control, machine/engine, etc., can solve the problems of expensive, complicated channel branches, etc., and achieve the effect of simplified structure and high engine braking power

Active Publication Date: 2017-04-12
MAN SONDERFAHRZEUGE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a channel branch with a differently configured guide grid is obviously complex and therefore expensive

Method used

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  • Components of the throttle device for controlling and/or regulating engine braking operation
  • Components of the throttle device for controlling and/or regulating engine braking operation
  • Components of the throttle device for controlling and/or regulating engine braking operation

Examples

Experimental program
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Effect test

Embodiment Construction

[0050] figure 1 Roughly schematically shown is a cross section through an exhaust gas turbine 1 of an exhaust gas turbocharger for a self-igniting internal combustion engine of a motor vehicle. Unless otherwise stated, exhaust gas turbochargers of known design have a bearing housing, a compressor housing and a housing 2 of the exhaust gas turbine 1 .

[0051] The turbine wheel 3 , indicated only by dashed lines, is arranged in the housing 2 , which is helically shaped in cross section, on a shaft 4 , wherein the shaft 4 drives a not shown compressor wheel of a compressor of the exhaust gas turbocharger.

[0052] Arranged around the turbine wheel 3 is a guide or guide device 5 with adjustable flow guide vanes 6 , which are adjusted via a not shown adjustment for controlling the drive power or suction capacity of the turbine wheel 3 . The mechanism is adjustable and accordingly also functions as a throttle.

[0053] The housing 2 of the exhaust gas turbine has a turbine inlet ...

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Abstract

The invention relates to an assembly of a throttling device for controlling and / or regulating the engine braking operation of an internal combustion engine, in particular a self-igniting internal combustion engine, which is supercharged by means of at least one exhaust gas turbocharger in a motor vehicle, In this case, the at least one or at least one exhaust gas turbocharger has at least one single-flow or multi-flow exhaust gas turbine, in whose housing at least one inflow channel is formed, the throttle device is accommodated adjacent to the impeller accommodated in the housing The turbine wheel in the chamber and its upstream are integrated into the inflow channel. In order to increase the engine braking performance in the low rotational speed range, it is proposed that the throttle device is arranged in the region of the opening of the at least one inflow channel into the impeller receiving chamber in such a way that the throttle device is essentially completely closed in its closed position. The at least one inflow channel and thus the flow connection to the impeller receiving space.

Description

technical field [0001] The invention relates to an assembly of a throttle device for controlling and / or regulating the engine braking operation of a turbocharged internal combustion engine of a motor vehicle. Background technique [0002] In turbocharged internal combustion engines, the engine braking operation can be enhanced by throttling of the exhaust gas system, for example via a flap as a throttle, whereby the throttle is placed upstream of the exhaust gas turbine. Thus, by controlling the regulating device, the delivery power of the compressor driven by the exhaust gas turbine or the boost pressure in the combustion air-intake system of the internal combustion engine can be increased in a targeted manner in order to increase the braking power during engine braking operation. and air throughput (Luftdurchsatz) (=cooling). The throttle device can be formed by a valve, slide, rotary slide or the like and is mounted, for example, on an inlet flange of a housing of the ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D17/12F02B37/22F02B37/24F02C6/12
CPCF01D17/165F02C6/12F02D9/06F02D9/08F02D9/10F01D17/146F02B37/025F02B37/22F02B37/24F05D2220/40Y02T10/12
Inventor F.拉默F.莱滕梅尔H.克林格
Owner MAN SONDERFAHRZEUGE AG
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