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A dual-channel power turbine system and its control method

A power turbine and dual-channel technology, which is applied to engine components, combustion engines, machines/engines, etc., can solve the problem of low energy recovery rate of exhaust gas, achieve high energy recovery rate of exhaust gas, increase turbocharger turbine speed, and increase output The effect of power

Active Publication Date: 2017-11-17
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and problems of the low energy recovery rate of the exhaust gas of the internal combustion engine in the prior art, and provide a dual-channel power turbine system with a high energy recovery rate of the exhaust gas of the internal combustion engine and its control method

Method used

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  • A dual-channel power turbine system and its control method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] see figure 1 , a dual-channel power turbine system, comprising an internal combustion engine body 1, a turbocharger 3, and a mechanical transmission 6, the turbocharger 3 comprising a mechanically connected compressor 31 and a turbocharger turbine 32, the compressor 31 The air outlet is connected with the internal combustion engine body 1 gas path after the intake manifold 11, the air inlet of the supercharger turbine 32 is connected with the internal combustion engine body 1 gas path after the exhaust manifold 12, and the gas outlet of the supercharger turbine 32 is connected with the internal combustion engine body 1 gas path. The dual-channel power turbine 7 is connected to the air path, and the dual-channel power turbine 7 is mechanically connected to the internal combustion engine body 1 through the mechanical transmission device 6; the dual-channel power turbine 7 includes a No. 1 power turbine flow channel 71 and a No. 2 power turbine flow channel 72 The air inle...

Embodiment 2

[0051] Basic content is the same as embodiment 1, the difference is:

[0052] see figure 1 , the flow cross-sectional area of ​​the first power turbine flow channel 71 and the second power turbine flow channel 72 is smaller than the flow cross-sectional area of ​​the supercharger turbine 32; The gas manifold 11 is connected with the gas path of the internal combustion engine body 1;

[0053] The compressed air enters the internal combustion engine body 1 through the air outlet of the compressor 31 and the intake manifold 11 successively, which means that the compressed air enters the intercooler 9 after passing through the air outlet of the compressor 31, and the compressed air The air enters the intake manifold 11 after being cooled by the intercooler 9, and then enters the internal combustion engine body 1.

Embodiment 3

[0055] Basic content is the same as embodiment 1, the difference is:

[0056] see figure 1 , the air inlet of the No. 1 power turbine channel 71 is connected to the gas path of the internal combustion engine body 1 through the bypass valve 5, the bypass pipeline 4, and the exhaust manifold 12 in sequence; the bypass valve 5 is electronically controlled Butterfly valve, the control end of the bypass valve 5 is connected to the signal of the internal combustion engine ECU2, the internal combustion engine ECU2 is connected to the signal of the internal combustion engine body 1, and the signal of the internal combustion engine ECU2 is connected to the pressure sensor 13 arranged on the intake manifold 11;

[0057] When the internal combustion engine is at low speed and low load: the bypass valve 5 is closed, at this time, the exhaust gas in the internal combustion engine body 1 passes through the exhaust manifold 12 and the turbocharger turbine 32 and then enters the No. The powe...

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Abstract

A dual-flow power turbine system and a control method thereof, comprising an internal combustion engine body, a turbocharger, and a mechanical transmission device, wherein the turbocharger comprises a compressor and a turbocharger turbine which are connected to the air passage of the internal combustion engine body after passing through an intake manifold. The internal combustion engine body is mechanically connected with the dual-flow power turbine through a mechanical transmission device. The dual-flow power turbine includes a No. 1 power turbine flow channel whose air inlet is connected to the air path of the internal combustion engine body through an exhaust manifold. The No. 2 power turbine runner is connected to the air circuit of the internal combustion engine body after the turbine and the exhaust manifold. The air outlet of the No. 1 power turbine runner and the air outlet of the No. 2 power turbine runner are both connected to the exhaust gas after-treatment system. ; The exhaust gas discharged into the No. 1 power turbine flow channel and the No. 2 power turbine flow channel drives the dual-flow channel power turbine to work. The design not only has a high energy recovery rate of the exhaust gas of the internal combustion engine, but also has a simple structure, which improves the low-speed and low-load performance of the internal combustion engine, so that the internal combustion engine always obtains the best performance.

Description

technical field [0001] The invention relates to a power turbine system, in particular to a dual-channel power turbine system and a control method thereof, and belongs to the technical field of energy recovery from exhaust gas of internal combustion engines. Background technique [0002] At present, in the field of internal combustion engine technology, the energy used for power output of internal combustion engines only accounts for 35%-45% of the total heat of fuel combustion, while the heat taken away by exhaust gas accounts for 30%-40%; therefore, it is necessary to recover as much exhaust gas as possible Energy can increase the output power of the internal combustion engine, improve the thermal efficiency of the internal combustion engine, improve fuel consumption, and save energy and protect the environment. [0003] The Chinese patent application publication number is CN104329148A, and the application publication date is February 4, 2015. The invention discloses a two-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N5/04F02B37/18
CPCF01N5/04F02B37/18F02B37/005F02B37/183Y02T10/12F02B41/10F01N5/02F02B33/02F02B37/12F02G1/0435F02G5/02F02G2242/40F02B37/002F02B37/004F02B37/22F02B37/025
Inventor 刘正白廖显敏
Owner DONGFENG COMML VEHICLE CO LTD