Novel low-temperature fuel reforming unit based on combined external reformer of an engine

Patent metadata

Field	Value
Publication number	US-2019345902-A1
Application number	US-201715559822-A
Country	US
Kind code	A1
Filing date	Mar 27, 2017
Priority date	Jan 6, 2017
Publication date	Nov 14, 2019
Grant date	—

Abstract

The present invention discloses a novel low-temperature fuel reforming unit based on combined external reformer of an engine, comprising an engine cylinder and an external low-temperature fuel reformer; the external low-temperature fuel reformer is winded with a heater strip and is provided with a first temperature controlled meter, the inlet of the external low-temperature fuel reformer is connected with a air inlet pipe and a fuel sample injection pipe, and a flow meter is arranged on the air inlet pipe; the fuel sample injection pipe is connected with a fuel injection pump and a fuel vaporization tank which is provided with a second temperature controlled meter; the outlet of the external low-temperature fuel reformer is connected with the engine inlet pipe via a reforming gas pipe; and the reformed low-temperature products enter into the engine inlet pipe via the reforming gas pipe for combining with the fresh air again to form a uniform hybrid gas, and the hybrid gas is introduced into the engine cylinder and performing combined combustion with the fuel in the cylinder to achieve activity and concentration stratification of hybrid gas. Since the above process does not need adding catalyst, the engine of the present invention can be operated more efficient and energy-saving.

First claim

What is claimed is:

1 . A novel low-temperature fuel reforming unit based on combined external reformer of an engine, comprising an engine cylinder ( 1 ) which connects with an engine inlet pipe ( 3 ) and the engine exhaust pipe ( 2 ), wherein,
The fuel reforming unit also comprises an external low-temperature fuel reformer ( 6 ), a air inlet pipe ( 11 ) and a fuel sample injection pipe ( 15 ), said external low-temperature fuel reformer ( 6 ) is winded with a heater strip ( 7 ), and is provided with a first temperature controlled meter ( 8 ); one end of the air inlet pipe ( 11 ) and one end of the fuel sample injection pipe ( 15 ) are connected with the inlet of the external low-temperature fuel reformer ( 6 ); while the other end of the air inlet pipe ( 11 ) is connected with a air bottle ( 13 ), and a flow meter ( 12 ) is arranged on the air inlet pipe ( 11 ); The other end of the fuel sample injection pipe ( 15 ) is connected with a fuel injection pump ( 14 ), a fuel vaporization tank ( 9 ), which is arranged on the fuel sample injection pipe ( 15 ), is provided with a second temperature controlled meter ( 10 ); The outlet of the external low-temperature fuel reformer ( 6 ) is connected with the engine inlet pipe ( 3 ) via a reforming gas pipe ( 4 ); A thermocouple ( 5 ) is arranged on the reforming gas pipe ( 4 ) and adjacent to the outlet of the external low-temperature fuel reformer ( 6 ); The initial fuel from the fuel injection pump ( 14 ) enters into the fuel vaporization tank ( 9 ) at a constant speed via the fuel sample injection pipe ( 15 ), and the vaporized fuel is introduced into the external low-temperature fuel reformer ( 6 ), meanwhile, fresh air provided by the air bottle ( 13 ) enters into the external low-temperature fuel reformer ( 6 ) via the air inlet pipe ( 11 ), wherein, flow capacity of the fresh air is regulated by the flow meter ( 12 ); in the external low-temperature fuel reformer ( 6 ), vaporized fuel combines with the fresh air, and then performs low-temperature reforming so as to form low-temperature products; and the reformed low-temperature products enter into the engine inlet pipe ( 3 ) via the reforming gas pipe ( 4 ) for combining with the fresh air again to form a uniform hybrid gas, and the hybrid gas is introduced into the engine cylinder ( 1 ) and performing combined combustion with the fuel in the cylinder to achieve activity and concentration stratification of hybrid gas.

Assignees

• Univ Tianjin

Inventors

• Yao Mingfa
• Wang Yang
• Wei Lixia
• Liu Haifeng
• Wang Hu
• Zheng Zunqing

Classifications

• F02M27/00 Primary

  Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like · CPC title

• F02M31/16

  Other apparatus for heating fuel · CPC title

• Y02T10/12

  Improving ICE efficiencies · CPC title