公开(公告)号：US11125170B2

公开(公告)日：2021-09-21

申请号：US16214248

申请日：2018-12-10

Applicant: Wisconsin Alumni Research Foundation

Inventor： Sage L. Kokjohn ,  David D. Wickman

IPC: F02D19/06 ,  F02D19/08 ,  F01N3/20 ,  F02M25/028 ,  F02M25/022 ,  F02M37/00

Abstract: An engine/reformer system accepts a first fuel and reforms it into syngas for use as a fuel in an accompanying internal combustion engine. Prior to reforming, the first fuel is pressurized and/or heated to at or near supercritical fluid conditions, such that the resulting syngas leaves the reformer in a supercritical fluid state. Injection of the supercritical syngas into an engine cylinder avoids the autoignition problems that occur when gaseous syngas is used. The first fuel is a fully self-reforming fuel (one that needs no separate water supply for complete conversion to syngas), and can beneficially be a “wet” fuel, such as ethanol containing water, allowing the system to use intermediate products of an ethanol production process (such as hydrous ethanol and stillage wastewater) as fuel, and reducing the overall cost of fuel production and engine operation.

公开(公告)号：US09376955B2

公开(公告)日：2016-06-28

申请号：US14748730

申请日：2015-06-24

Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION

Inventor： Rolf Deneys Reitz ,  Reed M. Hanson ,  Derek A. Splitter ,  Sage L. Kokjohn

IPC: F02B1/12 ,  F02D41/30 ,  F02B17/00 ,  F02B23/06 ,  F02D19/08 ,  F02D41/00 ,  F02D19/06 ,  F02D41/40

CPC classification number: F02B17/005 ,  F02B1/12 ,  F02B23/06 ,  F02B23/0669 ,  F02B23/0672 ,  F02B2275/14 ,  F02D19/061 ,  F02D19/0649 ,  F02D19/0689 ,  F02D19/0692 ,  F02D19/081 ,  F02D41/0025 ,  F02D41/3047 ,  F02D41/402 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/36

Abstract: A compression ignition engine uses two or more fuel charges having two or more reactivities to control the timing and duration of combustion. In a preferred implementation, a lower-reactivity fuel charge is injected or otherwise introduced into the combustion chamber, preferably sufficiently early that it becomes at least substantially homogeneously dispersed within the chamber before a subsequent injection is made. One or more subsequent injections of higher-reactivity fuel charges are then made, and these preferably distribute the higher-reactivity matter within the lower-reactivity chamber space such that combustion begins in the higher-reactivity regions, and with the lower-reactivity regions following thereafter. By appropriately choosing the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot).

公开(公告)号：US20150292391A1

公开(公告)日：2015-10-15

申请号：US14748730

申请日：2015-06-24

Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION

Inventor： Rolf Deneys Reitz ,  Reed M. Hanson ,  Derek A. Splitter ,  Sage L. Kokjohn

IPC: F02B17/00 ,  F02B1/12

CPC classification number: F02B17/005 ,  F02B1/12 ,  F02B23/06 ,  F02B23/0669 ,  F02B23/0672 ,  F02B2275/14 ,  F02D19/061 ,  F02D19/0649 ,  F02D19/0689 ,  F02D19/0692 ,  F02D19/081 ,  F02D41/0025 ,  F02D41/3047 ,  F02D41/402 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/36

Abstract: A compression ignition engine uses two or more fuel charges having two or more reactivities to control the timing and duration of combustion. In a preferred implementation, a lower-reactivity fuel charge is injected or otherwise introduced into the combustion chamber, preferably sufficiently early that it becomes at least substantially homogeneously dispersed within the chamber before a subsequent injection is made. One or more subsequent injections of higher-reactivity fuel charges are then made, and these preferably distribute the higher-reactivity matter within the lower-reactivity chamber space such that combustion begins in the higher-reactivity regions, and with the lower-reactivity regions following thereafter. By appropriately choosing the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot).

Abstract translation: 压缩点火发动机使用具有两个或更多个反应性的两个或更多个燃料电池来控制燃烧的时间和持续时间。 在优选的实施方案中，将低反应性燃料电荷注入或以其它方式引入燃烧室中，优选地足够早，使得其在进行后续注入之前至少基本均匀地分散在腔室内。 然后进行一次或多次随后的高反应性燃料电荷的注入，这些优选在较低反应性室空间内分配较高反应性物质，使得在较高反应性区域中开始燃烧，并且随后的低反应性区域 之后 通过适当地选择电荷的反应性，它们的相对量和它们的时间，可以调节燃烧以在受控的温度（并且因此控制的NOx）下实现最佳的功率输出（并且因此燃料效率），并且具有受控的当量比（和 从而控制煤烟）。

公开(公告)号：US09080501B2

公开(公告)日：2015-07-14

申请号：US14108868

申请日：2013-12-17

Applicant: Wisconsin Alumni Research Foundation

Inventor： Rolf Deneys Reitz ,  Reed M. Hanson ,  Derek A. Splitter ,  Sage L. Kokjohn

IPC: F02M43/00 ,  F02M21/02 ,  F02B23/06 ,  F02D19/08 ,  F02D41/00 ,  F02D41/30 ,  F02D19/06 ,  F02D41/40

CPC classification number: F02B17/005 ,  F02B1/12 ,  F02B23/06 ,  F02B23/0669 ,  F02B23/0672 ,  F02B2275/14 ,  F02D19/061 ,  F02D19/0649 ,  F02D19/0689 ,  F02D19/0692 ,  F02D19/081 ,  F02D41/0025 ,  F02D41/3047 ,  F02D41/402 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/36

Abstract: A compression ignition engine uses two or more fuel charges having two or more reactivities to control the timing and duration of combustion. In a preferred implementation, a lower-reactivity fuel charge is injected or otherwise introduced into the combustion chamber, preferably sufficiently early that it becomes at least substantially homogeneously dispersed within the chamber before a subsequent injection is made. One or more subsequent injections of higher-reactivity fuel charges are then made, and these preferably distribute the higher-reactivity matter within the lower-reactivity chamber space such that combustion begins in the higher-reactivity regions, and with the lower-reactivity regions following thereafter. By appropriately choosing the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot).

Abstract translation: 压缩点火发动机使用具有两个或更多个反应性的两个或更多个燃料电池来控制燃烧的时间和持续时间。 在优选的实施方案中，将低反应性燃料电荷注入或以其它方式引入燃烧室中，优选地足够早，使得其在进行后续注入之前至少基本均匀地分散在腔室内。 然后进行一次或多次随后的高反应性燃料电荷的注入，这些优选在较低反应性室空间内分配较高反应性物质，使得在较高反应性区域中开始燃烧，并且随后的低反应性区域 之后 通过适当地选择电荷的反应性，它们的相对量和它们的时间，可以调节燃烧以在受控的温度（和因此控制的NOx）下实现最佳的功率输出（并且因此燃料效率），并且具有受控的当量比（和 从而控制煤烟）。

公开(公告)号：US20200182165A1

公开(公告)日：2020-06-11

申请号：US16214248

申请日：2018-12-10

Applicant: Wisconsin Alumni Research Foundation

Inventor： Sage L. Kokjohn ,  David D. Wickman

IPC: F02D19/06

Abstract: An engine/reformer system accepts a first fuel and reforms it into syngas for use as a fuel in an accompanying internal combustion engine. Prior to reforming, the first fuel is pressurized and/or heated to at or near supercritical fluid conditions, such that the resulting syngas leaves the reformer in a supercritical fluid state. Injection of the supercritical syngas into an engine cylinder avoids the autoignition problems that occur when gaseous syngas is used. The first fuel is a fully self-reforming fuel (one that needs no separate water supply for complete conversion to syngas), and can beneficially be a “wet” fuel, such as ethanol containing water, allowing the system to use intermediate products of an ethanol production process (such as hydrous ethanol and stillage wastewater) as fuel, and reducing the overall cost of fuel production and engine operation.

公开(公告)号：US20140102406A1

公开(公告)日：2014-04-17

申请号：US14108868

申请日：2013-12-17

Applicant: Wisconsin Alumni Research Foundation

Inventor： Rolf Deneys Reitz ,  Reed M. Hanson ,  Derek A. Splitter ,  Sage L. Kokjohn

IPC: F02B23/06

CPC classification number: F02B17/005 ,  F02B1/12 ,  F02B23/06 ,  F02B23/0669 ,  F02B23/0672 ,  F02B2275/14 ,  F02D19/061 ,  F02D19/0649 ,  F02D19/0689 ,  F02D19/0692 ,  F02D19/081 ,  F02D41/0025 ,  F02D41/3047 ,  F02D41/402 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/36

Abstract: A compression ignition engine uses two or more fuel charges having two or more reactivities to control the timing and duration of combustion. In a preferred implementation, a lower-reactivity fuel charge is injected or otherwise introduced into the combustion chamber, preferably sufficiently early that it becomes at least substantially homogeneously dispersed within the chamber before a subsequent injection is made. One or more subsequent injections of higher-reactivity fuel charges are then made, and these preferably distribute the higher-reactivity matter within the lower-reactivity chamber space such that combustion begins in the higher-reactivity regions, and with the lower-reactivity regions following thereafter. By appropriately choosing the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot).

Abstract translation: 压缩点火发动机使用具有两个或更多个反应性的两个或更多个燃料电池来控制燃烧的时间和持续时间。 在优选的实施方案中，将低反应性燃料电荷注入或以其它方式引入燃烧室中，优选地足够早，使得其在进行后续注入之前至少基本均匀地分散在腔室内。 然后进行一次或多次随后的高反应性燃料电荷的注入，这些优选在较低反应性室空间内分配较高反应性物质，使得在较高反应性区域中开始燃烧，并且随后的低反应性区域 之后 通过适当地选择电荷的反应性，它们的相对量和它们的时间，可以调节燃烧以在受控的温度（和因此控制的NOx）下实现最佳的功率输出（并且因此燃料效率），并且具有受控的当量比（和 从而控制煤烟）。