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Diesel engine four-stage-switching sequential pressurizing device and control device

A technology of supercharging device, switching sequence, applied in mechanical equipment, combustion engine, machine/engine, etc.

Active Publication Date: 2016-07-13
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these three patents can only achieve three-stage switching sequential supercharging, and none of them involve the situation of continuing staged supercharging when the large and small turbochargers work at the same time

Method used

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  • Diesel engine four-stage-switching sequential pressurizing device and control device
  • Diesel engine four-stage-switching sequential pressurizing device and control device

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Experimental program
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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] combine figure 1 , the present invention includes: including diesel engine 8, intake and exhaust pipes, large turbocharger, small turbocharger 2, intercooler 6, control unit, pressure stabilizing ball, solenoid valve, control valve, pressure sensor 5, position sensors etc. Two large and small turbochargers are arranged in parallel, and the turbines of the two superchargers are double air inlets. One end of the first control valve 16 is connected to the pressure stabilizing ball, and the other end is connected to one of the air inlets of the small turbocharger 2 turbine; one end of the first solenoid valve 15 is connected to the stabilizing ball, and the other end is connected to the small turbocharger 2 The other intake port of the turbo is connected. One end of the second control valve 12 is connected to the pressure regula...

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PUM

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Abstract

The invention provides a diesel engine four-stage-switching sequential pressurizing device and a control device. The device comprises a diesel engine, a big turbocharger, a small turbocharger, a control unit, a first control valve, a second control valve, a third control valve, a fourth control valve, a first electromagnetic valve and a second electromagnetic valve, the big turbocharger and the small turbocharger are arranged parallelly, each of the big turbocharger and the small turbocharger is provided two air inlets, and four-stage pressurizing is realized by arranging pipelines different and matching with the corresponding valves. The device is simple in structure, the big turbocharger and the small turbocharger are arranged parallelly, pressurizing effect at four different degrees can be realized when the diesel engine is in different working conditions, and characteristics of a pressurizing system are closer to meet needs of the diesel engine.

Description

technical field [0001] The invention relates to a supercharging device, in particular to a four-stage switching sequential supercharging device and a control method for a diesel engine. Background technique [0002] The application of turbocharging technology has significantly improved the power density and fuel economy of diesel engines, which has become a milestone in the history of diesel engine development. However, in the joint work of diesel engine and turbocharger, the boost pressure and air flow are not only affected by the diesel engine speed, but also by the load of the diesel engine [1] When the diesel engine is running at low speed and low load, the boost pressure and air flow Dropping down quickly, the turbocharger is operating in the low-efficiency zone. The higher the engine pressurization degree, the more serious the above-mentioned disadvantages. [0003] In order to solve the above contradictions, researchers have proposed many improvement measures, such ...

Claims

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Application Information

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IPC IPC(8): F02B37/007F02B37/16
CPCF02B37/007F02B37/16Y02T10/12
Inventor 王银燕马传杰杨传雷胡松
Owner HARBIN ENG UNIV