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Power recovery method and implementation device of high back pressure diesel engine based on electric supercharging

A technology of power recovery and electric boosting, which is applied in combustion engines, engine control, machines/engines, etc., can solve the problems of no patents, etc., and achieve the effects of simple structure, power realization, and reasonable design

Active Publication Date: 2022-08-09
SHANGHAI JIAOTONG UNIV
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  • Claims
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  • Power recovery method and implementation device of high back pressure diesel engine based on electric supercharging
  • Power recovery method and implementation device of high back pressure diesel engine based on electric supercharging
  • Power recovery method and implementation device of high back pressure diesel engine based on electric supercharging

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Embodiment

[0030] The specific structure of the entire implementation device is as follows: figure 2 and image 3 As shown, it includes intake manifold 1, intake manifold 2, diesel engine 3, exhaust manifold 4, exhaust manifold 5, electric compressor 6, compressor 7, intercooler 8, turbine 9, exhaust back pressure valve 10 , bypass pipe 11, bypass valve 12, host computer 13, control module 14, frequency conversion motor 15, gear box 16, gear box oil outlet pipe 17, heat sink 18, gear box oil inlet pipe 19, cooling oil tank 20, motor pulley 21. Mounting base 22, electric compressor bracket 23, tensioner 24, electric compressor fixing plate 25, the inlet of the intake branch pipe 2 is connected to the outlet of the intake manifold 1, and the outlet of the intake branch pipe 2 is connected to the diesel engine 3 inlet. The inlet of the air passage is connected, the inlet of the exhaust branch pipe 4 is connected with the outlet of the exhaust passage of the diesel engine 3, the outlet of ...

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Abstract

A power -based high -back pressure diesel engine power recovery method and its implementation device in the field of diesel engine technology and its implementation device. The power recovery method includes the following steps: the turbine turnover formula is calculated to calculate the front pressure;The energy that can be provided; use the energy balance formula between the turbine and the gas compressor and the air compressor efficiency formula, combined with the calculation of the actual temperature after the pressure and the electric air compressor after the electric compressor; the energy formula calculates the required for the electric gas compressor to calculateEnergy; The energy value required by the calculated electric pneumatic machine can be adjusted through the power supply speed through the frequency conversion motor.In the present invention, the electric pneumatic machine is connected in the low -voltage level. When the diesel engine is at a high -exhaust back pressure environment, the driving motor speed is adjusted according to the exhaust back pressure to increase the intake pressureThe amount of diesel engine is supplemented, which can realize the recovery of the power of the diesel engine.

Description

technical field [0001] The invention relates to a power recovery method in the technical field of diesel engines and an implementation device thereof, in particular to a power recovery method of a high back pressure diesel engine with a variable frequency motor based on electric supercharging and an implementation device thereof. Background technique [0002] Since the 1950s, diesel engines have been widely used in the fields of ship main power and marine power generation due to their large power range, low fuel consumption rate, simple and convenient maintenance, and high reliability. In the special working conditions of underwater work, because the exhaust pipe of the diesel engine is at a certain depth below the sea level, the diesel engine is faced with an environment of high exhaust back pressure, and usually the maximum back pressure range can be as high as 1.65bar ~ 1.85bar. [0003] Studies have shown that the high back pressure environment has a serious impact on th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B37/04F02B37/12F02D41/00
CPCF02B37/04F02B37/12F02D41/0007F02B2037/122F02D2200/10Y02T10/12
Inventor 杨名洋马泽泰邓康耀石磊崔毅张琨
Owner SHANGHAI JIAOTONG UNIV
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