公开(公告)号：WO2011100027A2

公开(公告)日：2011-08-18

申请号：PCT/US2010/060194

申请日：2010-12-14

Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION ,  REITZ, Rolf, Deneys ,  HANSON, Reed, M. ,  SPLITTER, Derek, A. ,  KOKJOHN, Sage, L.

Inventor： REITZ, Rolf, Deneys ,  HANSON, Reed, M. ,  SPLITTER, Derek, A. ,  KOKJOHN, Sage, L.

IPC: F02D19/06 ,  F02D41/34 ,  F02D41/40 ,  F02B17/00

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: 压燃式发动机使用两种或更多种具有两种或更多种反应性的燃料充量来控制燃烧的时间和持续时间。 在优选的实施方式中，较低反应性的燃料装料被注入或以其他方式引入到燃烧室中，优选足够早地使其在进行后续喷射之前变得至少基本均匀地分散在室内。 然后进行一次或多次随后的较高反应性燃料充注，并且这些优选在较低反应性室空间内分配较高反应性物质，使得燃烧在较高反应性区域中开始，并且在较低反应性区域之后 其后。 通过适当选择电荷的反应性，它们的相对量以及它们的时间，燃烧可以被定制为在受控温度（并且因此受控的NOx）下实现最佳的功率输出（并且因此实现燃料效率），并且具有受控的当量比（和 从而控制煤烟）。

公开(公告)号：WO2003104634A1

公开(公告)日：2003-12-18

申请号：PCT/US2003/015452

申请日：2003-05-16

Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION ,  WICKMAN, David, Darin ,  REITZ, Rolf, Deneys

Inventor： WICKMAN, David, Darin ,  REITZ, Rolf, Deneys

IPC: F02F3/26

CPC classification number: F02B23/0636 ,  F02B1/12 ,  F02B3/06 ,  F02B23/0621 ,  F02B23/0651 ,  F02B23/0696 ,  F02B2275/14 ,  F02F2001/247 ,  Y02T10/123 ,  Y02T10/125

Abstract: Piston face (104, 204, 304) and combustion chamber (18) designs for use particularly in HSDI (high speed direct injection) diesel engines include an open bowl (108, 208, 308) characterized by a large face perimeter region (106, 206, 306) on the piston face (104, 204, 304), and a bowl (18) defined by a first depressed region (112, 212, 312) gently sloping radially inwardly from the face perimeter region (106, 206, 306) and a second depressed region (116, 216, 316) sharply sloping radially inwardly from the first depressed region (112, 212, 312) to the bowl floor (120, 220, 320). Injection is preferably directed towards an intermediate edge which is well-defined between the first and second depressed regions, resulting in portions of the injected fuel plume being directed to both the squish regions and the portion of the bowl situated below the intermediate edge. The designs promote premixed or MK (Modulated Kinetics) combustion, with a concomitant reduction in soot and nitrous oxides (NOx) emissions while maintaining or enhancing brake specific fuel consumption.

Abstract translation: 特别是在HSDI（高速直接喷射）柴油发动机中使用的活塞面（104,204,304）和燃烧室（18）的设计包括开口碗（108,208,308），其特征在于具有大的面周边区域（106， （104,204,304）上的第一凹陷区域（112,212,312），以及由所述表面周边区域（106,206,306）径向向内倾斜的第一凹陷区域（112,212,312）限定的碗（18） ）和从第一凹陷区域（112,212,312）向碗地板（120,220,320）径向向内急剧倾斜的第二凹陷区域（116,216,316）。 注射优选地指向在第一和第二凹陷区域之间明确限定的中间边缘，导致喷射的燃料羽流的部分被引导到位于中间边缘下方的挤压区域和碗的部分。 这些设计促进预混合或MK（调制动力学）燃烧，伴随着烟灰和一氧化二氮（NOx）排放的减少，同时保持或提高制动比燃料消耗。

公开(公告)号：WO2011100027A3

公开(公告)日：2011-11-03

申请号：PCT/US2010060194

申请日：2010-12-14

Applicant: WISCONSIN ALUMNI RES FOUND ,  REITZ ROLF DENEYS ,  HANSON REED M ,  SPLITTER DEREK A ,  KOKJOHN SAGE L

Inventor： REITZ ROLF DENEYS ,  HANSON REED M ,  SPLITTER DEREK A ,  KOKJOHN SAGE L

IPC: F02D19/06 ,  F02B17/00 ,  F02D41/34 ,  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，这些优选在低反应性室空间内分配较高反应性物质，使得燃烧在较高反应性区域开始，并且随着下部反应性区域的下降 其后。 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）下获得最佳的功率输出（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：WO2012134612A1

公开(公告)日：2012-10-04

申请号：PCT/US2012/022345

申请日：2012-01-24

Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION ,  REITZ, Rolf, Deneys ,  HANSON, Reed, M. ,  SPLITTER, Derek, A. ,  KOKJOHN, Sage, L.

Inventor： REITZ, Rolf, Deneys ,  HANSON, Reed, M. ,  SPLITTER, Derek, A. ,  KOKJOHN, Sage, L.

IPC: F02D19/06 ,  F02D19/08 ,  F02M37/00 ,  F02B23/08

CPC classification number: F02B69/02 ,  F02B1/14 ,  F02B17/005 ,  F02D11/105 ,  F02D13/0234 ,  F02D19/081 ,  F02D41/0002 ,  F02D41/0025 ,  F02D41/006 ,  F02D41/08 ,  F02D41/3017 ,  F02D2041/001 ,  F02D2041/0022 ,  F02D2041/3052 ,  F02M43/00 ,  F02M69/044 ,  F02M69/046 ,  Y02T10/18 ,  Y02T10/36 ,  Y02T10/42 ,  Y02T10/47

Abstract: A compression ignition (diesel) engine uses two or more fuel charges during a combustion cycle, with the fuel charges having two or more reactivities (e.g., different cetane numbers), in order to control the timing and duration of combustion. 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). At low load and no load (idling) conditions, the aforementioned results are attained by restricting airflow to the combustion chamber during the intake stroke (as by throttling the incoming air at or prior to the combustion chamber's intake port) so that the cylinder air pressure is below ambient pressure at the start of the compression stroke.

Abstract translation: 压缩点火（柴油）发动机在燃烧循环期间使用两个或更多个燃料充电，其中燃料电荷具有两个或更多个反应性（例如不同的十六烷值），以便控制燃烧的时间和持续时间。 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）下获得最佳的功率输出（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）。 在低负载和空载（空转）条件下，通过在进气冲程期间限制气流到燃烧室（通过在燃烧室的进气口处或在燃烧室的进气口之前节流进入的空气）来实现上述结果，使得气缸空气压力 在压缩冲程开始时低于环境压力。