A turbocharged diesel engine environmental protection device based on egr and intake air humidification
A technology of environmental protection device and diesel engine, which is applied in exhaust device, muffler device, exhaust gas recirculation and other directions, can solve the problem of water spray test not being carried out in the intake port, etc., and achieves improvement of combustion and emission performance, energy saving, and simple device structure. Effect
Inactive Publication Date: 2016-01-27
HARBIN ENG UNIV
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Problems solved by technology
[0003] At present, the EGR technology has become more and more mature, and the diesel engine air intake humidification technology is being continuously studied. The domestic high-speed diesel engine intake port water spray test has hardly been carried out. It is necessary to further explore the search for a faster and more efficient intake air humidification method.
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[0011] The present invention is described in more detail below in conjunction with accompanying drawing example:
[0012] combine figure 1 , the present invention includes an EGR system, a steam generator 11 , a steam ejector 2 , a condenser 7 , a steam storage tank 10 , a steam bypass valve 9 and a steam flow control valve 8 . The inlet of the steam generator 11 is connected with the EGR cooling water outlet 13 and the outlet of the turbine 12 respectively, and the outlet of the steam generator 11 is connected with the gas storage tank 10 and the atmosphere respectively. The steam storage tank 10 is provided with a pressure sensor 16, the outlet is respectively connected with the inlet of the steam flow control valve 8 and the inlet of the steam bypass valve 9, the outlet of the steam flow control valve 8 is connected with the first injection inlet of the steam injector 2, and the steam bypass valve The outlet of 9 is connected with the inlet of condenser 7, and the outlet o...
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The invention aims to provide an EGR (exhaust gas recirculation) and intake humidification based supercharged diesel engine environment protection device. The device comprises a diesel engine, a turbo-supercharger, an intake pipe and an exhaust pipe, the intake pipe is communicated with the diesel engine and a compressor of the turbo-supercharger, and the exhaust pipe is connected with the diesel engine and a turbine of the turbo-supercharger. The device further comprises a steam generator, a gas storage tank, a condenser, an EGR cooler and a steam ejector, the steam ejector is mounted on the intake pipe, the EGR cooler is mounted between the steam ejector and the exhaust pipe, a cooling water outlet of the EGR cooler and the turbine are communicated with the steam generator respectively, the steam generator is communicated with the gas storage tank and the atmosphere, the gas storage tank is communicated with the steam injector and a cooling water inlet of the EGR cooler, and the condenser is arranged on a pipeline between the gas storage tank and the cooling water inlet of the EGR cooler. Energy is saved, combustion and emission performance of a supercharged diesel engine can be improved, and the complete device is simple in structure and is applicable to marine diesel engine systems and the like.
Description
technical field [0001] The invention relates to a diesel engine, specifically a diesel engine with an EGR device. Background technique [0002] With the stringent emission regulations, countries around the world are vigorously developing emission control technologies. General emission control technologies can be divided into two categories: one is in-machine optimization measures, and the other is exhaust aftertreatment. Among them, diesel fuel mixed with water and exhaust gas recirculation are two common in-machine measures. EGR (ExhaustGasRecirculation) system, that is, the exhaust gas recirculation system, the system sends part of the engine exhaust gas back to the intake system and mixes with air according to the different load conditions of the engine, and then enters the engine cylinder to complete combustion. The exhaust gas contains inert gas, which dilutes the fresh intake air. The oxygen concentration is reduced, the combustion reaction rate is slowed down, and t...
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IPC IPC(8): F02B37/02F02M25/035F02M25/07F01N5/02F02M26/19F02M26/35
CPCY02T10/12
Inventor 王银燕祖象欢王贺春杨传雷崔欣洁胡松牛晓晓
Owner HARBIN ENG UNIV