Water adding and spraying system and method for alcohol engine

An engine and water injection technology, applied in engine components, engine control, combustion engines, etc., to slow down the combustion rate, expand the combustion area, and improve the methanol replacement rate

Inactive Publication Date: 2018-09-14
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to aim at the defects of existing methanol diesel engines, and provide a water-mixed injection sy

Method used

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  • Water adding and spraying system and method for alcohol engine
  • Water adding and spraying system and method for alcohol engine
  • Water adding and spraying system and method for alcohol engine

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Embodiment Construction

[0030] Such as figure 1 As shown, a water-mixed injection system for an alcohol-based engine, which takes the commonly used four-cylinder engine intake manifold to inject methanol as a typical example, includes a diesel supply device, a diesel injection device, a methanol supply device, a methanol injection device, a water supply system, an engine Electronic control unit 7 and engine body 8 .

[0031] The diesel supply device includes a diesel tank 10 and a diesel oil delivery pump 11 arranged in the diesel tank 10 .

[0032] The diesel injection device includes a high-pressure oil pump 9 and four diesel injectors 14 for injecting high-pressure fuel into four cylinders.

[0033] The methanol supply device comprises a methanol tank 4 and a methanol pump 5 arranged in the methanol tank 4,

[0034] The water supply system includes a water storage tank 1 and a water pump 2 arranged in the water storage tank 1 . A pressure sensor 13 is arranged in the water supply pipeline.

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Abstract

The invention discloses a water adding and spraying system for an alcohol engine. The water adding and spraying system for the alcohol engine comprises a diesel oil supply device, a diesel oil spraying device, an alcohol supply device, an alcohol spraying device, an engine electronic control unit and an engine body, and is characterized in that after alcohol fuel which is discharged from the alcohol supply device is mixed with water discharged from a water supply system in an alcohol and water mixer, the mixture is discharged to the alcohol spraying device and is sprayed into the engine. On the basis of a methanol/diesel double-combustion engine, the characteristic of ultimate mutual solubility of water and methanol, the alcohol and water mixer is added on an alcohol delivering track, theair inlet temperature is reduced when in high load by use of the advantage of high latent heat of evaporation, then the temperature when a top dead center is compressed is reduced, the engine combustion rate is reduced, detonation of the engine is avoided, thus, the methanol substitution rate of the engine can be increased, a double-fuel combustion region is expanded, the thermal efficiency of theengine is improved, and NOx and particulate emission of the engine are reduced.

Description

technical field [0001] The invention belongs to the technical field of engine fuel injection, and in particular relates to a water-mixed injection system and a water-mixed injection method for an alcohol engine. Background technique [0002] In "Combustion Characteristics and Emission Characteristics of Diesel Methanol Combined Combustion Supercharged Common Rail Engine" published by Yao Chunde of Tianjin University in the first issue of "Combustion Science and Technology" in Volume 17 in 2011, the supercharged common rail engine adopts The diesel / methanol combined combustion mode is used to analyze the combustion characteristics and emission characteristics. The research shows that the diesel / methanol combined combustion mode has the advantages of delaying the ignition time, improving the combustion degree at constant volume, reducing the temperature in the cylinder and the exhaust temperature, and can greatly improve the fuel consumption. The combustion efficiency of M100 ...

Claims

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Application Information

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IPC IPC(8): F02M25/028F02D19/06F02D19/08
CPCF02D19/0686F02D19/08F02M25/0225F02M25/028Y02T10/30
Inventor 洪建海袁宝良杨实秋郑金保孙呈祥夏少华居钰生
Owner CHINA FIRST AUTOMOBILE
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