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A turbocharging system coupled with egr and intake air

A technology of supercharging system and coupling turbine, applied in charging system, electrical control, exhaust gas recirculation and other directions, can solve problems such as low engine efficiency, and achieve the effect of improving engine efficiency and energy utilization rate

Active Publication Date: 2018-08-07
DONGFENG COMML VEHICLE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of low engine efficiency in the prior art, to provide a kind of EGR turbocharger system that can effectively improve the efficiency of EGR direct injection engine and realize the joint control of intake air and EGR supercharging degree

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  • A turbocharging system coupled with egr and intake air

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Embodiment 1

[0032] see figure 1, a turbocharging system coupled with EGR and intake air, comprising a turbocharger 1, an EGR turbocharger 2, an EGR rail 3, an EGR nozzle 4, an engine 5, and a turbine bypass pipe 10, the turbocharger The EGR turbocharger 1 includes a coaxially connected turbine 11 and a compressor 12, and the EGR turbocharger 2 includes a coaxially connected EGR turbine 21 and an EGR compressor 22. The exhaust port of the compressor 12 passes through an air intake intercooler 20 It communicates with the intake port of the engine 5, the intake port of the EGR turbine 21 communicates with the exhaust pipe 51, the exhaust port of the EGR turbine 21 communicates with the intake port of the turbine 11, and the intake port of the EGR compressor 22 The outlet communicates with the exhaust pipe 51 through the No. 1 exhaust pipe 6, and the exhaust port of the EGR compressor 22 communicates with the intake passage of the engine 5 through the No. 2 exhaust pipe 7, the EGR gas rail 3,...

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Abstract

An EGR and inlet coupling turbine pressurizing system comprises a turbocharger, an EGR turbocharger, an EGR air track, an EGR nozzle and an engine. An air outlet of a compressor of the turbocharger communicates with an air inlet passage of the engine. An air inlet of an EGR turbo machine of the EGR turbocharger communicates with an air outlet pipe of the engine. The air outlet communicates with the air inlet of the turbo machine. An air inlet of an EGR compressor of the EGR turbocharger communicates with the air outlet pipe through a first air outlet pipe. The air outlet communicates with the air inlet passage of the engine through a second air outlet pipe, the EGR air track and the EGR nozzle in sequence. Not only is the efficiency of the engine improved, but also precise controlling of the direct-injected EGR temperature is achieved.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engine EGR, and in particular relates to a turbocharger system coupled with EGR and intake air, which is suitable for improving the efficiency of an EGR direct injection engine, realizing the precise control of direct injection EGR temperature and the combination of intake air and EGR supercharging degree control. Background technique [0002] At present, in the face of the increasingly severe environmental crisis, countries have increasingly stringent requirements for emission regulations, so reducing emissions has become the main direction for the development of internal combustion engines. EGR as the reduction of internal combustion engine NO x Effective in-engine purification measures for emissions are also one of the important technical routes for low-emission gas engines. [0003] The traditional EGR system has a response delay effect, and an excessive EGR rate may appear durin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M26/34F02M26/09F02M26/16F02M26/24F02B41/10F02D9/08F02D9/02F02D41/00
CPCF02B41/10F02D9/02F02D9/08F02D41/0077Y02T10/12
Inventor 徐敏安涛
Owner DONGFENG COMML VEHICLE CO LTD