Low emission combustion system of flexible fuel engine

A combustion system, flexible fuel technology, applied in combustion engines, internal combustion piston engines, charging systems, etc., can solve problems such as incombustibility of diesel oil, increased diameter of plunger and nozzle holes, and cooling of exhaust gas.

Inactive Publication Date: 2004-12-29
SHANGHAI JIAO TONG UNIV
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AI Technical Summary

Problems solved by technology

In the prior art, the document "Using Exhaust Gas Recirculation to Reduce NO Emissions When Diesel Engines Burn Dimethyl Ether" (Journal of Xi'an Jiaotong University, Volume 34, No. 7, July 2000, author: Wang Hewu, etc.) introduces a direct-injection single-cylinder When the diesel engine uses dimethyl ether as fuel, the combustion system and fuel injection system of the original engine are basically used. The diameter of the plunger and the diameter of the nozzle hole in the fuel injection system are enlarged; external exhaust gas recirculation is used, and the exhaust gas needs to be cooled. This method is not suitable Application of real engine
In addition, the technology burns only one fuel and cannot burn the most widely used diesel

Method used

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  • Low emission combustion system of flexible fuel engine

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Embodiment Construction

[0009] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0010] Such as figure 1 As shown, the present invention mainly includes: engine crankshaft 1, exhaust port 2, scavenging port 3, diesel fuel injector 4, alternative fuel injector 5, intake pipe 6, surge tank 7, compressor 8, motor 9, Inverter 10, alternative fuel high-pressure fuel pipe 11, diesel high-pressure fuel pipe 12, diesel fuel tank 13, diesel filter 14, diesel fuel pump 15, diesel fuel pump governor 16, diesel throttle position sensor 17, electronic control unit 18, alternative fuel throttle Position sensor 19, alternative fuel pump governor 20, alternative fuel pump 21, alternative fuel filter 22, alternative fuel tank 23, alternative fuel pump transmission gear 24, main gear 25, speed sensor 26, diesel oil pump transmission gear 27, Engine cylinder 28. The diesel fuel tank 13 communicates with the inlet of the diesel fuel pump 15 ...

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Abstract

The low exhaust combustion system for flexible fuel engine includes main gear, rotation speed sensor, two oil pumps with speed regulator, throttle valve position sensor, electric control unit, frequency variator, motor, compressor, pressure stabilizer, scavenging port, exhaust port, oil ejector and cylinder. The present invention consists of engine scavenging and exhausting system and diesel oil and fuel substitute double ejecting system. The present invention has double ejecting system and flexibly selected fuel substitute to lower the exhaust of the engine, two oil pumps for convenient regulation of oil supplying ahead angle and sectional ejecting, homogeneous mixed gas obtained before ignition, fast low temperature combustion, greatly lowered NOx and grain exhaust and raised heat efficiency.

Description

Technical field [0001] The invention relates to a flexible fuel engine combustion system, in particular to a flexible fuel engine low-emission combustion system, belonging to the technical field of internal combustion engines. Background technique [0002] Diesel engines generally use diesel as fuel, which is the most efficient engine and has always been highly valued by people. After several generations of efforts, the traditional diesel engine combustion system has been developed relatively well. However, in recent years, the lack of oil resources in the world has led to large fluctuations in oil prices and increasingly stringent emission regulations in various countries, which poses new challenges for diesel engine alternative fuels and low-emission combustion research. Methanol, ethanol, dimethyl ether and other fuels are the new engine alternative fuels that have emerged in recent years. [0003] At home and abroad, most of the technologies for using alternative fuels as com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B25/04F02B75/00F02D41/30F02M43/00
CPCY02T10/146Y02T10/12
Inventor 李孝禄黄震夏惠明周校平肖进肖广飞
Owner SHANGHAI JIAO TONG UNIV
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