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Double-channel butterfly valve structure

A dual-channel, butterfly valve technology, applied in the direction of adding non-fuel substances to fuel, internal combustion piston engines, engine components, etc., can solve the problem of high cost, achieve simple structure, high EGR rate, and achieve the effect of internal purification

Inactive Publication Date: 2009-01-21
中国第一汽车集团公司无锡柴油机厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, a single-valve single-channel structure is generally adopted, and the cold-end valve arrangement is the main arrangement (the outlet end of the EGR cooler). The EGR exhaust gas needs to pass through a relatively complicated device before it can enter the recirculation. It is more common to install an electronic control on the air inlet. Intake throttle, but the cost is relatively high

Method used

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  • Double-channel butterfly valve structure
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Embodiment Construction

[0010] Below the present invention will be further described in conjunction with the embodiment in the accompanying drawing:

[0011] As shown in Figure 1 and Figure 2, it includes EGR valve body 1, two EGR valve plates 2, rivet 3, adjustment sleeve 4, drive shaft assembly 5, sealing gasket 6, compression spring 7 and protective sleeve 8, etc.

[0012] The EGR valve of the present invention adopts two waste gas passages (A, B) arranged on the EGR valve body 1 of the EGR valve, and the drive shaft assembly 5 is installed in the EGR valve body 1, and the drive shaft assembly 5 is fixed on the EGR valve by an adjustment sleeve. In body 1. The two EGR valve plates 2 are fixed on the drive shaft of the drive shaft assembly 5 through rivets 3, and the two EGR valve plates 2 are simultaneously driven by one drive shaft in the drive shaft assembly 5, and the two EGR valve plates 2 are driven by Controlled by the same drive shaft. An adjustment sleeve 4 is arranged on the drive shaft...

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Abstract

The invention relates to a structure of a dual channel butterfly valve arranged on a hot end, in particular to a hot end dual channel EGR valve which is mounted on a six cylinder diesel engine. The hot end dual channel EGR valve is characterized in that two waste gas channels are arranged on the body of the EGR valve, a drive shaft assembly is mounted in the EGR valve body, two EGR valve plates are fixed on a drive shaft of the drive shaft assembly via rivets, a sealing gasket, a pressing spring and a protective sleeve are arranged on the drive shaft of the drive shaft assembly, the pressing spring tightly compresses the sealing gasket, and is arranged in the protective sleeve. The drive shaft is equipped with an adjusting sleeve which is used to adjust the clearance between the two EGR valve plates. The dual channel butterfly valve can sufficiently utilize the exhaust pulse energy of the six cylinder diesel engine, and realizes higher EGR rate to purify the diesel engine, and thereby enabling the engine to be easier to realize recycling of waste gas, and meeting high requirements of discharge regulations.

Description

technical field [0001] The invention relates to a double-channel butterfly valve structure arranged at the hot end, in particular to a hot-end double-channel EGR valve installed on a six-cylinder diesel engine. Background technique [0002] With the increasingly stringent control on the emission level of vehicle engines, for diesel engines that are required to meet the national IV and above emission levels, exhaust after-treatment technologies including EGR must be used. The main purpose of EGR technology is to allow part of the exhaust gas in the exhaust pipe of the diesel engine to be sent back to the combustion chamber through a certain device to participate in combustion (commonly known as exhaust gas recirculation, EGR), thereby reducing the concentration of NOx and PM in the exhaust gas and meeting the emission requirements. The level of EGR rate (exhaust gas participating in recirculation) controls the concentration of NOx and PM in the exhaust gas, that is, the level...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M25/07F02M26/71F02M26/74
CPCY02T10/121Y02T10/12
Inventor 王一江陆金龙陈勤学陈晓阳
Owner 中国第一汽车集团公司无锡柴油机厂
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