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Device for the injection of recirculated exhaust gases, distribution box and supply module comprising said device

An injection device and recirculation technology, which is used in exhaust gas recirculation, fuel injection device, charging system, etc., can solve the problems of uneven gas temperature and recirculation rate, and blockage of injection port particles.

Inactive Publication Date: 2014-03-26
VALEO SYST THERMIQUES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] It has been found that in such a distribution box, as the recirculated exhaust gas advances into the injection channel, for each successive cylinder, the static pressure of the recirculated exhaust gas and thus the injected flow disappears, with the result that the injected flow and by This gas temperature and recirculation rate is not uniform between cylinders
Additionally, this can lead to some injection ports being clogged with particles contained in the recirculated exhaust gas

Method used

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  • Device for the injection of recirculated exhaust gases, distribution box and supply module comprising said device
  • Device for the injection of recirculated exhaust gases, distribution box and supply module comprising said device
  • Device for the injection of recirculated exhaust gases, distribution box and supply module comprising said device

Examples

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Embodiment Construction

[0030] The different elements of the intake gas supply module of the vehicle engine are in the Figures 1 to 5 shown in .

[0031] figure 1 The intake gas supply module 10 of a vehicle engine shown in , comprises a collection tank 14 which supplies a heat exchanger 16 with a fluid, for example air from the engine's propulsion circuit. The module may further comprise a valve 12 for controlling fluid flow.

[0032] The heat exchanger 16 comprises, for example, a side wall 16a, a lower wall 16b and an upper wall 16c, between which a plate 16d and an internal spacer 16e are positioned one on top of the other. The upper wall 16c includes inlet / outlet ducts 17a, 17b for the liquid used to cool the fluid. The plates 16d are assembled in pairs so as to form between the two plates of the same pair a first channel for the circulation of the cooling fluid, between two plates positioned opposite two adjacent pairs equipped with said spacers Channels for fluid circulation at 16e. Flui...

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PUM

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Abstract

The invention relates to a device for injecting the recirculated exhaust gases of a vehicle engine, in particular a diesel engine. The injection device comprises a plurality of injection ports (26.1, 26.2, 26.3, 26.4) provided in a portion of the material of the injection device, each injection port (26.1, 26.2, 26.3, 26.4) having a section and a height extending through the thickness of the material. According to the invention, the sections and / or heights of at least two injection ports (26.1, 26.2, 26.3, 26.4) are different.

Description

technical field [0001] The invention relates to an injection device for recirculated exhaust gas from a vehicle engine, a gas distribution box in said engine and a gas supply module for said engine comprising said device. Background technique [0002] The intake gas supply module for a vehicle engine allows the supply of a mixture, called intake gas, including air, for operating the engine. [0003] Such an intake air supply module comprises a heat exchanger allowing the air to be cooled and a distribution box allowing the cooled air to be collected and distributed towards the engine cylinders. [0004] Already familiar is the incoming gas supply module, which additionally includes valves that allow a certain proportion of the exhaust gases emitted by the engine, called recirculated exhaust gases, to be injected into the distribution box. [0005] Such a distribution box thus allows the mixture of cooled air coming from the heat exchanger and recirculated exhaust gas coming...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M25/07F02M35/104F02B29/04
CPCF02B29/0462F02M25/0723Y02T10/146Y02T10/121F02M25/0722F02M25/0712F02M35/1045F02M26/09F02M26/19F02M26/20F02M26/00Y02T10/12F02D1/00F02M59/00F02M69/044F02M2700/1317
Inventor G.德佩尔塞梅克J-P.加兰德L.奥迪拉德
Owner VALEO SYST THERMIQUES