公开(公告)号：DE102017121191A1

公开(公告)日：2018-03-22

申请号：DE102017121191

申请日：2017-09-13

Applicant: MAZDA MOTOR

Inventor： KASAI TAKASHI ,  HIRASAWA KAZUNORI ,  WADA YOSHITAKA ,  FURUTA TETSURO ,  NAITO MASAHIRO

IPC: F01N3/28 ,  F01N3/10

Abstract: Ein Abgasrohr 1 eines Motors umfasst ein kurbelförmiges Rohrteil 11, welches eine erste Biegung 11a und eine zweite Biegung 11b aufweist, die Abgas zu einem Mischelement 5 leiten, und ein gerades Rohrteil 12, in welches die zweite Biegung 11b übergeht. Das Mischelement 5 ist in dem geraden Rohrteil 12 angeordnet. Ein Injektor 4 ist in einem dem Mischelement 5 gegenüberliegenden Abschnitt der zweiten Biegung 11b angebracht. Die Injektionsachse des Injektors 4 erstreckt sich in Längsrichtung des geraden Rohrteils 12 und läuft auf das Mischelement 5 zu. Eine Führung 15, die einen Teil des Abgases von der ersten Biegung 11a zu dem Injektor 4 leitet, ist im Inneren des kurbelförmigen Rohrteils 11 angeordnet.

公开(公告)号：JP2011252473A

公开(公告)日：2011-12-15

申请号：JP2010128536

申请日：2010-06-04

Applicant: Mazda Motor Corp ,  マツダ株式会社

Inventor： MARUMOTO MASAHARU ,  TETSUNO MASAYUKI ,  HATANO TAKASHI ,  FURUTA TETSURO

IPC: F02D41/04 ,  F01N3/023 ,  F01N3/025 ,  F01N3/029 ,  F01N3/24 ,  F02D13/02 ,  F02D41/06 ,  F02D41/38

Abstract: PROBLEM TO BE SOLVED: To provide an engine control method and an engine control device which can suppress the occurrence of pre-ignition while keeping the warming-up performance in cold and reducing the NOin diesel particulate filter regeneration when an exhaust valve is opened and main injection, pilot injection and post injection are carried out in an intake process.SOLUTION: In a first operation condition, the exhaust valve is opened and the main injection and the pilot injection and the post injection by which a prescribed quantity of fuel is jetted are carried out in the intake process. In the pilot injection, the prescribed quantity of the injection is reduced on the basis of the quantity of non-combustion fuel in a cylinder. In a second operation condition, the exhaust valve is opened and the main injection and the pilot injection are carried out at the same time in the intake process and the pilot injection is carried out in the prescribed quantity of the injection as it is.

Abstract translation: 要解决的问题：提供一种发动机控制方法和发动机控制装置，其可以在保持预热性能的同时抑制预点火的发生，并且减少NO x 当排气阀打开并且在进气过程中进行主喷射，先导喷射和后喷射时，柴油颗粒过滤器再生中的。 解决方案：在第一操作条件下，打开排气门，并且在进气过程中执行主喷射和喷射喷射以及喷射预定量燃料的后喷射。 在先导喷射中，基于气缸中的非燃烧燃料量来减少规定量的喷射量。 在第二运行状态下，打开排气阀，并且在进气过程中同时进行主喷射和先导喷射，并且以规定量的喷射原样执行先导喷射。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011252474A

公开(公告)日：2011-12-15

申请号：JP2010128537

申请日：2010-06-04

Applicant: Mazda Motor Corp ,  マツダ株式会社

Inventor： TETSUNO MASAYUKI ,  MARUMOTO MASAHARU ,  MAEKAWA KOTA ,  FURUTA TETSURO

IPC: F01N3/023 ,  F01N3/24 ,  F02D41/02

Abstract: PROBLEM TO BE SOLVED: To provide a method and device for controlling an engine, which can achieve both NOx reduction and a regeneration treatment of a particulate filter without reducing sealability of an intake valve during regeneration treatment of the particulate filter.SOLUTION: The method for controlling the engine includes: a filter regeneration step of regenerating the particulate filter by applying post injection; an internal EGR step of refluxing a part of exhaust gas into a cylinder by opening an exhaust valve during an intake stroke; a post injection quantity increasing step of increasing an injection quantity of the post injection with the lapse of time from the post injection starting; and an internal EGR completion step of completing the internal EGR step when the temperature of the particulate filter does not reach a predetermined temperature based on a value related to the temperature of the particulate filter at a point time when the injection quantity of the post injection reaches a predetermined value.

Abstract translation: 要解决的问题：提供一种用于控制发动机的方法和装置，其可以在微粒过滤器的再生处理期间不降低进气阀的密封性而实现NOx还原和颗粒过滤器的再生处理。 解决方案：用于控制发动机的方法包括：过滤器再生步骤，通过施加后喷射再生微粒过滤器; 内部EGR步骤，通过在进气冲程期间打开排气阀将一部分排气回流到气缸中; 后喷射量增加步骤，从后喷射开始经过时间增加后喷射的喷射量; 以及内部EGR完成步骤，当所述颗粒过滤器的温度基于与所述后喷射的喷射量达到的时刻的微粒过滤器的温度相关的值而未达到预定温度时，完成所述内部EGR步骤 预定值。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011214413A

公开(公告)日：2011-10-27

申请号：JP2010080342

申请日：2010-03-31

Applicant: Mazda Motor Corp ,  マツダ株式会社

Inventor： NAGOSHI MASAHIRO ,  TETSUNO MASAYUKI ,  MAEKAWA KOTA ,  SUGIYAMA TAKANORI ,  HATANO TAKASHI ,  FURUTA TETSURO

IPC: F02D17/02 ,  F02D9/02 ,  F02D17/00 ,  F02D23/00 ,  F02D29/02 ,  F02M25/07

CPC classification number: Y02T10/121 ,  Y02T10/144

Abstract: PROBLEM TO BE SOLVED: To improve ignition property in restart of an engine after automatic stop thereof.SOLUTION: An exhaust gas recirculation passage 50 includes: a main passage 51 to which an EGR cooler 52 is disposed; a cooler bypass passage 53 to which no EGR cooler 52 is disposed; and an exhaust gas recirculation valve 51a and a cooler bypass valve 53a switching between a state where the exhaust gas flows through the main passage 51, and a state where the exhaust gas flows through the cooler bypass passage 53. In a time from satisfaction of an automatic stop condition to stop of fuel supply, a PCM 10 performs post injection after main injection of fuel, meanwhile, in a time from the stop of the fuel supply to stop of the diesel engine 1, the PCM 10 controls the exhaust gas recirculation valve 51a and the cooler bypass valve 53a to make the exhaust gas flow through the cooler bypass passage 53, and throttles a throttle valve 36.

Abstract translation: 要解决的问题：提高自动停止发动机重启后的点火性能。解决方案：排气再循环通道50包括：设置有EGR冷却器52的主通道51; 没有设置EGR冷却器52的冷却器旁路通路53; 以及在废气流过主通路51的状态和排气流过冷却器旁路通路53的状态之间切换的排气再循环阀51a和冷却器旁通阀53a。在满足 停止燃料供给的自动停止状态，PCM10在主喷射燃料之后进行后喷射，同时在从停止燃料供给到停止柴油发动机1的时间内，PCM 10控制废气再循环阀 51a和冷却器旁路阀53a，使废气流过冷却器旁路通路53，并节流阀36。