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。