公开(公告)号：US20150252745A1

公开(公告)日：2015-09-10

申请号：US14626136

申请日：2015-02-19

Applicant: DENSO CORPORATION

Inventor： Hideo NARUSE ,  Makoto MASHIDA ,  Koji ISHIZUKA ,  Jun KAWAMURA ,  Masayuki SUZUKI

IPC: F02D41/04 ,  F02D41/30

CPC classification number: F02D41/04 ,  F02D35/028 ,  F02D41/0025 ,  F02D41/3005 ,  F02D2200/0612 ,  Y02T10/36

Abstract: A fuel property detection apparatus detects fuel properties based on cetane number and density of a tested fuel. Tested fuel is examined in terms of ignition timing, and, when the tested fuel has an ignition timing earlier than a threshold, the tested fuel is identified as having a standard cetane number. When the tested fuel has an ignition timing later than the threshold, the tested fuel is identified as having a low cetane number. An advance angle of the ignition timing is increased for yielding a greater ignition timing difference between a light property fuel and a heavy property fuel, and, in such manner, the difference therebetween is detected. When an advancement of the ignition timing is greater than a threshold, the fuel property is identified as heavy, and, when an advancement of the ignition timing is smaller than the threshold, the fuel property is identified as light.

Abstract translation: 燃料特性检测装置根据试验燃料的十六烷值和密度来检测燃料特性。 根据点火正时检查测试的燃料，并且当被测燃料的点火时间早于阈值时，所测试的燃料被识别为具有标准十六烷值。 当被测燃料的点火时间晚于阈值时，所测试的燃料被鉴定为具有低十六烷值。 提高点火正时的提前角，以便在轻型燃料和重型燃料之间产生更大的点火正时差，并且以这种方式检测它们之间的差异。 当点火时间的提前大于阈值时，燃料特性被认为是重的，并且当点火正时的提前小于阈值时，将燃料特性识别为轻。

公开(公告)号：US20150285201A1

公开(公告)日：2015-10-08

申请号：US14658697

申请日：2015-03-16

Applicant: DENSO CORPORATION

Inventor： Kazufumi SERIZAWA ,  Masayuki SUZUKI ,  Koji ISHIZUKA

IPC: F02M61/18 ,  F02M61/14

CPC classification number: F02M61/182 ,  F02B23/0648 ,  F02B23/0669 ,  F02B23/0672 ,  F02M61/14 ,  F02M61/1833 ,  F02M61/184 ,  F02M61/1846 ,  Y02T10/125

Abstract: An injection port includes a straightening area which straightens a flow of a fuel, and an increasing area which is a slit connected to a downstream end of the straightening area and increasing a cross-sectional area of the flow toward a downstream end of the increasing area. The fuel is injected from the downstream end of the increasing area. When a cross-sectional area of the downstream end of the straightening area is expressed as S1, a cross-sectional area of the downstream end of the increasing area is expressed as S2, and a shape property value is expressed as X that is equal to S2/S1, the shape property value X is set to be greater than 1.0 and be less than or equal to 4.0.

Abstract translation: 注射口包括矫直燃料的流动的矫直区域和与矫直区域的下游端连接的狭缝的增加区域，并且朝向增加区域的下游端增加流动的横截面面积 。 从增加区域的下游端喷射燃料。 当矫直区域的下游端的横截面积被表示为S1时，增加区域的下游端的横截面积被表示为S2，并且形状属性值表示为等于 S2 / S1，将形状特性值X设定为大于1.0，小于或等于4.0。

公开(公告)号：US20150159565A1

公开(公告)日：2015-06-11

申请号：US14564681

申请日：2014-12-09

Applicant: DENSO CORPORATION

Inventor： Masayuki SUZUKI ,  Hideo NARUSE ,  Jun KAWAMURA ,  Koji ISHIZUKA

IPC: F02D41/00 ,  F02D41/40

CPC classification number: F02D41/0002 ,  F02D35/023 ,  F02D35/028 ,  F02D41/005 ,  F02D41/0052 ,  F02D41/403 ,  F02D2041/001 ,  F02D2041/0022 ,  F02D2041/389 ,  F02D2200/0611 ,  Y02T10/42 ,  Y02T10/44 ,  Y02T10/47

Abstract: The density of fuel being used by a compression-ignition engine and the flammability of the fuel (readiness to ignite when injected into a combustion chamber of the engine, under the current operating conditions of the engine) are respectively detected. When the flammability is excessively low and the density is above a threshold value, the oxygen concentration of the intake air supplied to the cylinders is increased until the flammability reaches a reference condition, while when the flammability is excessively low and the density is below the threshold value, the compression ratio of the engine (and/or each pilot injection amount) is increased until the flammability reaches the reference condition.

Abstract translation: 分别检测压缩点火式发动机使用的燃料密度和燃料的燃烧性（当在发动机的当前运行条件下注入发动机的燃烧室时准备点燃）。 当可燃性过低且密度高于阈值时，供应到气缸的进气的氧浓度增加直到可燃性达到参考条件，而当可燃性过低且密度低于阈值时 值，发动机的压缩比（和/或每个先导喷射量）增加直到可燃性达到基准状态。