公开(公告)号：JP2014040782A

公开(公告)日：2014-03-06

申请号：JP2012182319

申请日：2012-08-21

Applicant: Denso Corp ,  株式会社デンソー

Inventor： YOKOTA TAKAMASA ,  SASAKI SATORU

IPC: F02D19/12 ,  F02D13/02 ,  F02D23/00 ,  F02D45/00 ,  F02M25/07

CPC classification number: F02M25/07 ,  F02D13/0265 ,  F02M25/025 ,  F02M26/00 ,  Y02T10/121 ,  Y02T10/18

Abstract: PROBLEM TO BE SOLVED: To provide an internal combustion engine with high response capable of reducing NOx contained in exhaust air without complicating a structure.SOLUTION: A variable valve mechanism control part 55 opens an exhaust valve 13 by a variable valve mechanism part 42 not only in an exhaust stroke, but also in a suction stroke. Thereby, exhaust air exhausted from a combustion chamber 16 is returned to the combustion chamber 16 together with suction air one part of which is sucked from a suction passage 28 in the suction stroke. A fluid injector 41 injects non-combustible fluid containing water to the exhaust air exhausted from the combustion chamber 16. Therefore, during the suction stroke, the exhaust air sucked in the combustion chamber 16 from an exhaust passage 23 contains water vapor generated by evaporating water in the non-combustible fluid. As a result, the exhaust air exhausted from the combustion chamber 16 in the exhaust stroke is added with the non-combustible fluid from the fluid injector 41, and returned to the combustion chamber 16 in the next suction stroke.

Abstract translation: 要解决的问题：提供一种具有高回复能力的内燃机，能够减少废气中所含的NOx，而不会使结构复杂化。解决方案：可变阀机构控制部分55不仅通过可变气门机构部分42打开排气门13 在排气冲程中，也在吸入冲程中。 因此，从燃烧室16排出的废气与抽吸行程中从吸入通道28吸入的吸入空气一起返回到燃烧室16。 流体注射器41将含有水的不可燃流体喷射到从燃烧室16排出的废气中。因此，在吸入冲程期间，从排气通道23吸入燃烧室16的废气含有蒸发水产生的水蒸汽 在不可燃液体中。 结果，在排气冲程中从燃烧室16排出的排气与来自流体喷射器41的不可燃流体相加，并在下一个吸入冲程中返回到燃烧室16。

公开(公告)号：JP2013044245A

公开(公告)日：2013-03-04

申请号：JP2011180812

申请日：2011-08-22

Applicant: Denso Corp ,  株式会社デンソー

Inventor： YOKOTA TAKAMASA ,  SASAKI SATORU ,  NISHIJIMA YOSHIAKI

IPC: F02D19/12 ,  F02B47/02 ,  F02D21/08 ,  F02D43/00 ,  F02M25/022 ,  F02M25/07

CPC classification number: F02M25/03 ,  Y02T10/121

Abstract: PROBLEM TO BE SOLVED: To avoid a misfire even in the low-load operation of an internal combustion engine, and to obtain NOx reduction efficiency by water injection.SOLUTION: The control device for a combustion system is applied to a combustion system including a fuel injection valve for directly injecting fuel to a combustion chamber and a water injection valve (non-combustion fluid injection valve) for injecting water (non-combustion fluid) to the combustion chamber. The control device for the combustion system includes a middle and high-load control means S50 for controlling the motion of the water injection valve so as to allow water to collide with the atomized fuel injected from the fuel injection valve in the middle or high-load operation equal to or higher than the set load in the internal combustion engine and a low-load control means S60 for controlling the water injection valve so that the water injection is started before the fuel injection and the water injection is finished before the fuel injection is started in the low-load of the internal combustion engine.

Abstract translation: 要解决的问题：即使在内燃机的低负荷运转中也能够避免发生失火，并且通过注水获得NOx还原效率。 解决方案：用于燃烧系统的控制装置被应用于包括用于将燃料直接喷射到燃烧室的燃料喷射阀和用于喷射水的非喷射阀（非燃烧流体喷射阀）的燃烧系统， 燃烧流体）到燃烧室。 用于燃烧系统的控制装置包括中高压负载控制装置S50，用于控制水喷射阀的运动，以使水能够与在中等或高负载中的燃料喷射阀喷射的雾化燃料相撞 操作等于或高于内燃机中的设定负荷;以及低负载控制装置S60，用于控制喷水阀，使得在燃料喷射和燃油喷射之前完成喷油之前开始注水 从内燃机的低负荷开始。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012225214A

公开(公告)日：2012-11-15

申请号：JP2011092061

申请日：2011-04-18

Applicant: Denso Corp ,  株式会社デンソー

Inventor： SASAKI SATORU ,  YOKOTA TAKAMASA

IPC: F02M25/022 ,  F02B23/02

CPC classification number: F02M25/03 ,  Y02T10/121

Abstract: PROBLEM TO BE SOLVED: To provide an internal combustion engine reducing generation of PM (Particulate Matter) by lowering a temperature of mixture air formed by mixing fuel injected from a fuel injection valve and air and sufficiently securing ignition delay of injected fuel.SOLUTION: A liquid injection valve 13 injects water to fuel spray 60 formed by fuel injected from the fuel injection valve 12 in a combustion chamber 18. By injecting water to the fuel spray 60, the fuel spray 60 is cooled by the injected water. Accordingly, a temperature rise of combustion gas generated by combustion of fuel is suppressed. As a result, the ignition delay during a fuel injection period is sufficiently secured, and expansion of a fire from a combustion region of the fuel spray 60 to a mixture region is prevented.

Abstract translation: 要解决的问题：通过降低由燃料喷射阀和空气喷射的燃料混合形成的混合空气的温度并充分确保喷射燃料的点火延迟来提供内燃机来减少PM（颗粒物）的产生。 解决方案：液体喷射阀13将水喷射到由燃料喷射阀12在燃烧室18中喷射的燃料形成的燃料喷雾60.通过向燃料喷雾60喷射水，燃料喷雾60被注入 水。 因此，燃料燃烧产生的燃烧气体的温度上升被抑制。 结果，充分确保燃料喷射期间的点火延迟，防止从燃料喷雾60的燃烧区域向混合区域的火焰的膨胀。 版权所有（C）2013，JPO＆INPIT