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Exhaust gas booster device and control method for single-cylinder diesel engine exhaust gas recirculation system

A recirculation system and exhaust gas pressurization technology, which is applied in the direction of exhaust gas recirculation, engine control, charging system, etc., to achieve the effect of expanding the adjustment range

Active Publication Date: 2018-05-18
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an exhaust gas booster device for a single-cylinder diesel engine exhaust gas recirculation system that can effectively solve the EGR exhaust gas recirculation and EGR adjustment requirements of different intake pressures and different working conditions

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  • Exhaust gas booster device and control method for single-cylinder diesel engine exhaust gas recirculation system

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing, the present invention is described in more detail:

[0029] combine figure 1 , the exhaust gas supercharging device of the single-cylinder diesel engine exhaust gas recirculation system of the present invention comprises an intake three-way valve 2, an exhaust three-way valve 5, a basic supercharger, a controlled supercharger, an exhaust gas valve 8, an air Valve 12, bypass valve 13, EGR exhaust gas buffer tank 11, EGR regulating valve 16, EGR cooler 17, check valve 4, pressure sensor and mass flow meter.

[0030] The inlet of the intake three-way valve 2 is connected with a high-pressure, high-speed external air source, the outlet of the first end of the intake three-way valve 2 is connected with the cylinder of the diesel engine, and the outlet of the second end is connected with the basic turbine 7 and the controlled turbine 10 respectively. 7 and the outlet of the controlled turbine 10 are connected to the outlet of t...

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Abstract

The invention provides a waste gas supercharging device of a waste gas recirculating system of a single-cylinder diesel and a control method. The waste gas supercharging device comprises a gas inlet three-way valve, a gas outlet three-way valve, a basic supercharger, a controlled supercharger, a waste gas valve, an air valve, a by-pass valve, an EGR waste gas buffer tank, an EGR adjusting valve, an EGR cooler, a one-way valve, a pressure sensor and a mass flow meter. The two turbosuperchargers which are connected in parallel are controlled, high-pressure and high-speed compressed air drives a turbine so as to drive a compressor to increase pressure of EGR waste gas according to different working conditions and different EGR requirements of the diesel, the pressure of the EGR waste gas can be increased quickly under low working conditions, large EGR rate circulating is realized, furthermore, low EGR rate requirements can be met under high working conditions, and an adjustment range of EGR circulating is expanded.

Description

technical field [0001] The invention relates to a diesel exhaust gas supercharging device. The invention also relates to a diesel engine exhaust gas supercharging control method. Background technique [0002] The exhaust gas recirculation system is referred to as EGR, which reduces the NOx by letting part of the exhaust gas enter the cylinder, mix with fresh air and enter the cylinder to reduce the combustion flame temperature and oxygen content. X As the global marine diesel engine NOX related laws and regulations become more and more stringent, EGR has become a way to reduce diesel engine NOX X One of the most effective measures of emissions. [0003] The research on single-cylinder engine plays an important role in the research and development of diesel engine, especially the research on the supercharging performance of single-cylinder engine has become the focus of current research, including the realization of single-cylinder engine EGR technology. For a naturally as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M26/08F02M26/09F02B37/007F02D21/08
CPCF02B37/007F02D21/08Y02T10/12
Inventor 王银燕祖象欢崔欣洁王贺春李旭宋贵涛马传杰杨传雷
Owner HARBIN ENG UNIV
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