公开(公告)号：EP2534352A4

公开(公告)日：2016-12-07

申请号：EP10845954

申请日：2010-12-14

申请人： WISCONSIN ALUMNI RES FOUND

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

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

CPC分类号： 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

摘要： 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).

摘要翻译： 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，较低反应性燃料电荷被注入或以其它方式引入燃烧室，优选足够早，使得其在进行随后的注射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，使得燃烧开始于较高反应性区域，并且随着下部反应性区域跟随 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）下获得最佳功率输出（并且因此燃料效率），并且具有受控的当量比（和 因此控制烟灰）。

公开(公告)号：EP2691626A4

公开(公告)日：2014-12-17

申请号：EP12763851

申请日：2012-01-24

申请人： WISCONSIN ALUMNI RES FOUND

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

IPC分类号： F02D19/08 ,  F02B23/08 ,  F02D11/10 ,  F02D13/02 ,  F02D19/12 ,  F02D21/08 ,  F02D33/02 ,  F02D41/08 ,  F02D41/30 ,  F02M37/00

CPC分类号： 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

摘要： 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.