公开(公告)号：JP2012241608A

公开(公告)日：2012-12-10

申请号：JP2011112142

申请日：2011-05-19

Applicant: Denso Corp ,  株式会社デンソー

Inventor： INUZUKA HIROYUKI ,  MIWA MAKOTO

IPC: F02M27/02 ,  F02D45/00

CPC classification number: F01N11/002 ,  F01N2240/30 ,  F01N2900/0411 ,  F01N2900/1404 ,  F02D19/0623 ,  F02D19/0671 ,  F02M26/35 ,  F02M26/36 ,  F02M26/46 ,  F02M26/47 ,  F02M26/49 ,  Y02T10/36 ,  Y02T10/47

Abstract: PROBLEM TO BE SOLVED: To diagnose deterioration in a fuel-reforming catalyst while satisfying a cost reduction request, in a system including a function for reforming fuel to be supplied to an engine.SOLUTION: A diagnostic apparatus for deterioration in a catalyst in a fuel reforming system includes: an inlet-side temperature sensor 30 for detecting a temperature at an inlet side of a fuel reforming catalyst 28; and an outlet-side temperature sensor 31 for detecting a temperature at an outlet side of the fuel-reforming catalyst 28. In a reforming driving mode, an ECU 34 opens an EGR valve 25 to recirculate a part of exhaust gas into an intake side as EGR gas, and a reforming-fuel injection valve 26 injects a reforming fuel into the EGR gas. The fuel-reforming catalyst 28 executes reforming control to reform the fuel into a fuel having high-combustibility. A differential temperature between the catalyst outlet-side temperature detected by the outlet-side temperature sensor 31 and the catalyst inlet-side temperature detected by the inlet-side temperature sensor 30 is calculated during the execution of the reforming control and compared with a deterioration-determination threshold, whereby deterioration diagnosis can be performed to determine whether the fuel-reforming catalyst 28 is deteriorated.

Abstract translation: 要解决的问题：为了在满足成本降低要求的同时，在包括对供给到发动机的燃料进行重整的功能的系统中，进行燃料重整催化剂的劣化的诊断。 解决方案：用于燃料重整系统中的催化剂劣化的诊断装置包括：用于检测燃料重整催化剂28入口侧的温度的入口侧温度传感器30; 以及用于检测燃料重整催化剂28的出口侧的温度的出口侧温度传感器31.在重整驱动模式中，ECU34打开EGR阀25，以将排气的一部分再循环到进气侧作为 EGR气体和重整燃料喷射阀26将重整燃料喷射到EGR气体中。 燃料重整催化剂28进行重整控制，将燃料重整成具有高燃烧性的燃料。 在重整控制的执行期间，计算由出口侧温度传感器31检测的催化剂出口侧温度与由入口侧温度传感器30检测出的催化剂入口侧温度之间的温差， 确定阈值，由此可以进行劣化诊断以确定燃料重整催化剂28是否劣化。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012172671A

公开(公告)日：2012-09-10

申请号：JP2011038929

申请日：2011-02-24

Applicant: Nippon Soken Inc ,  Denso Corp ,  株式会社デンソー ,  株式会社日本自動車部品総合研究所

Inventor： SHIGENAGA MASAHIRO ,  IIZUKA MOTOMASA ,  UMASAKI MASATOSHI ,  MIWA MAKOTO

IPC: F02D41/22 ,  F02B47/04 ,  F02D21/08 ,  F02D41/02 ,  F02D45/00

CPC classification number: F02D13/0265 ,  F02D35/02 ,  F02D35/027 ,  F02D41/005 ,  F02D41/006 ,  F02D41/3035 ,  F02D41/402 ,  Y02T10/18 ,  Y02T10/44 ,  Y02T10/47

Abstract: PROBLEM TO BE SOLVED: To prevent steep combustion during compression self-ignited combustion control of an engine and to satisfy a demand for reducing costs.SOLUTION: When an engine 11 is driven in a compression self-ignited combustion region, a fuel injector injects a fuel into a cylinder in an NVO (negative-valve-overlap) period where an exhaust valve 23 and an intake valve 22 are both closed. Then, the fuel is injected into the cylinder in an intake stroke. The injected fuel is compressed in a compression stroke to be self-ignited. When it is determined that a steep combustion occurs and a fuel injection quantity in the NVO period is greater than a lower determination threshold (for example, minimum fuel injection quantity of a fuel injection valve 19), the fuel injection quantity in the NVO period is reduced. When the fuel injection quantity NVO is not greater than the lower determination threshold, an oxygen quantity in the cylinder in the NVO period is reduced.

Abstract translation: 要解决的问题：为了防止在发动机的压缩自燃燃烧控制期间的急剧燃烧并且满足降低成本的需求。 解决方案：当发动机11在压缩自燃燃烧区域中被驱动时，燃料喷射器将燃料喷射到NVO（负阀重叠）期间的气缸中，其中排气门23和进气门22 都关闭了。 然后，在进气冲程中将燃料喷射到气缸中。 喷射的燃料在压缩冲程中被压缩以自燃。 当确定发生陡峭的燃烧并且NVO周期中的燃料喷射量大于较低的确定阈值（例如，燃料喷射阀19的最小燃料喷射量）时，NVO周期中的燃料喷射量为 降低。 当燃料喷射量NVO不大于较低的确定阈值时，NVO周期中的气缸中的氧气量减少。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012002088A

公开(公告)日：2012-01-05

申请号：JP2010135648

申请日：2010-06-15

Applicant: Denso Corp ,  Nippon Soken Inc ,  株式会社デンソー ,  株式会社日本自動車部品総合研究所

Inventor： KATO TAKEHIKO ,  SHIGENAGA MASAHIRO ,  UMASAKI MASATOSHI ,  SAITO KIMITAKA ,  MIWA MAKOTO

IPC: F02D41/22 ,  F02B23/02 ,  F02D45/00

CPC classification number: F02D13/0265 ,  F02D35/023 ,  F02D35/027 ,  F02D41/3035 ,  F02D41/3076 ,  F02D41/402 ,  Y02T10/18 ,  Y02T10/44

Abstract: PROBLEM TO BE SOLVED: To effectively control knocking during compression self-ignition combustion control of an engine.SOLUTION: A control device performs compression self-ignition combustion control for combusting a mixture gas by injecting fuel into a cylinder in NVO period (a negative valve-overlap period), in which both an exhaust valve 17 and an intake valve 16 are closed, and by causing self-ignition of the mixture gas using compression in a compression process. When knocking is detected during the compression self-ignition combustion control, the control device performs knock reduction control for correcting a fuel injection quantity in the NVO period to reduce knocking. When a pressure increase rate (increase rate of cylinder pressure during combustion) is lower than a predetermined threshold value, the control device determines that the fuel injection quantity in the NVO period is low and increases the fuel injection quantity in the NVO period. When the pressure increase rate is equal to or higher than the threshold value, the control device determines that the fuel injection quantity in the NVO period is high and decreases the fuel injection quantity in the NVO period. Thus, the control device controls the fuel injection quantity in the NVO period within a proper range (where knocking hardly occurs) in the NVO period.

Abstract translation: 要解决的问题：有效地控制发动机的压缩自点燃燃烧控制中的爆震。 解决方案：控制装置执行压缩自点火燃烧控制，以通过在NVO期间（负阀重叠时段）将燃料喷射到气缸中来燃烧混合气体，其中排气门17和进气门16 并且通过在压缩过程中使用压缩引起混合气体的自点火。 当在压缩自点燃燃烧控制期间检测到爆震时，控制装置执行用于校正NVO周期中的燃料喷射量的降低降低控制以减少爆震。 当压力增加率（燃烧过程中气缸压力的增加率）低于预定阈值时，控制装置确定NVO期间的燃料喷射量低，并且在NVO期间增加燃料喷射量。 当压力增加率等于或高于阈值时，控制装置确定NVO期间的燃料喷射量高，并且在NVO周期内降低燃料喷射量。 因此，控制装置在NVO期间内的NVO期间的燃料喷射量控制在适当的范围内（几乎不发生爆震）。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011027040A

公开(公告)日：2011-02-10

申请号：JP2009174493

申请日：2009-07-27

Applicant: Denso Corp ,  Nippon Soken Inc ,  株式会社デンソー ,  株式会社日本自動車部品総合研究所

Inventor： SHIGENAGA MASAHIRO ,  SAITO KIMITAKA ,  UMASAKI MASATOSHI ,  MIWA MAKOTO

IPC: F02P17/12 ,  F02B3/12 ,  F02B11/00 ,  F02B23/08 ,  F02B23/10 ,  F02D41/02 ,  F02D41/04 ,  F02D41/34 ,  F02D45/00

CPC classification number: F02D35/021 ,  F02D13/0265 ,  F02D41/006 ,  F02D41/3035 ,  F02D41/3094 ,  F02D41/401 ,  F02D2041/001 ,  F02P5/045 ,  F02P5/152 ,  F02P2017/128 ,  G01L23/225 ,  Y02T10/18 ,  Y02T10/44 ,  Y02T10/46

Abstract: PROBLEM TO BE SOLVED: To provide a controller for an internal combustion engine capable of appropriately avoiding deterioration in the detection accuracy of an ion current caused by reduction in voltage applied between a center electrode 36a and a ground electrode 36b of a spark plug 36 when the ion current flows by the combustion of fuel injected from a cylinder injection valve 52 in a period (NVO period) at which both an intake valve 42 and an exhaust valve 44 in the engine 10 which is switchable in premixed compression self-ignition combustion and spark ignition combustion are closed.
SOLUTION: An on-ignition signal is outputted from an ignition control section 66 during a period from the latter half of an expansion stroke to the valve opening timing of the exhaust valve 44 so that a first coil-energization process for feeding power to a capacitor 84 is performed. Then, when it is determined that the maximum value of an ion-output value detected during the NVO period becomes larger than or equal to a threshold, it is determined that the voltage applied between the center electrode 36a and ground electrode 36b of the spark plug 36 is dropped. A second coil-energization process is performed so that the on-ignition signal is outputted again to feed power to the capacitor 84 before the intake valve 42 is opened.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够适当地避免由于火花塞的中心电极36a和接地电极36b之间施加的电压降低引起的离子电流的检测精度的劣化的内燃机的控制器 如图36所示，在发动机10中的进气阀42和排气阀44都能够在预混压缩自点火中切换的期间（NVO周期）内，当从气缸喷射阀52喷射的燃料燃烧时，离子电流流动 燃烧和火花点火燃烧关闭。 解决方案：在从膨胀冲程的后半部分到排气阀44的开阀正时的期间，从点火控制部66输出点火信号，使得用于供给功率的第一线圈通电处理 到电容器84。 然后，当确定在NVO周期期间检测到的离子输出值的最大值变得大于或等于阈值时，确定施加在火花塞的中心电极36a和接地电极36b之间的电压 36掉了。 执行第二线圈通电处理，使得再次输出点火信号，以在进气阀42打开之前向电容器84供电。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2006144583A

公开(公告)日：2006-06-08

申请号：JP2004332812

申请日：2004-11-17

Applicant: Denso Corp ,  株式会社デンソー

Inventor： MIWA MAKOTO

IPC: F02B37/12 ,  F02B37/00 ,  F02B37/10 ,  F02B37/18 ,  F02B39/10 ,  F02D21/08 ,  F02D23/00 ,  F02M25/07

CPC classification number: F02D41/0007 ,  F02B29/0406 ,  F02B37/10 ,  F02B37/18 ,  F02B39/10 ,  F02D41/005 ,  F02D41/1448 ,  F02D2200/703 ,  F02M26/05 ,  Y02T10/144 ,  Y02T10/47

Abstract: PROBLEM TO BE SOLVED: To improve the rise of rotation of a turbine in the beginning of the start of motor assist and thus to improve supercharge responsiveness, in an internal combustion engine with motor assisted turbocharger. SOLUTION: The turbocharger 30 is disposed between an intake pipe 11 and an exhaust pipe 24. The turbocharger 30 has a motor 34 to perform power assist with respect to the turbocharger 30 by the drive of the motor 34 if necessary. A bypass passage 36 is disposed to the exhaust pipe 24 to bypass a turbine wheel 32, and a turbine bypass valve 37 is disposed to the bypass passage 36. An ECU 50 makes the turbine bypass valve be in an opened state, in the beginning of the start of the power assist by the motor 34. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：在具有电动辅助涡轮增压器的内燃机中，为了改善电动机辅助开始时的涡轮机的旋转上升，从而提高增压响应性。 解决方案：涡轮增压器30设置在进气管11和排气管24之间。涡轮增压器30具有马达34，以便在需要时通过马达34的驱动来对涡轮增压器30进行动力辅助。 旁通通道36设置在排气管24旁边以绕过涡轮机轮32，并且涡轮旁通阀37设置在旁通通道36上。ECU50使涡轮旁通阀处于打开状态 电动机34的动力辅助的开始。版权所有：（C）2006，JPO＆NCIPI

公开(公告)号：JP2006132600A

公开(公告)日：2006-05-25

申请号：JP2004320039

申请日：2004-11-04

Applicant: Denso Corp ,  株式会社デンソー

Inventor： ISOBE TAIJI ,  MIWA MAKOTO ,  MAJIMA YOSHIHIRO

IPC: F16H61/14 ,  F16H59/34 ,  F16H59/40 ,  F16H59/44

Abstract: PROBLEM TO BE SOLVED: To effectively improve fuel consumption with lock-up (L/U) slip control and deceleration recovering generation.
SOLUTION: A generator is driven for deceleration recovering generation while performing L/U slip control during a period for the deceleration recovering generation after setting a target L/U slip amount to be a value (10rpm, e.g.) smaller than the usual one depending on a decelerating condition. In this way, even when the generator is driven for the deceleration recovering generation while performing the L/U slip control during a period for the deceleration recovering generation, the L/U slip amount is controlled to be smaller than the usual one. So, a sudden reduction of an engine speed is suppressed by the decelerating energy of a vehicle (the output shaft rotating speed of a torque converter). Thus, the sudden reduction of the engine speed is prevented and a deceleration fuel cut period and a deceleration recovering generation period are elongated while executing a combination of the L/U slip control and the deceleration recovering generation during the deceleration fuel cut period.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：通过锁定（L / U）滑差控制和减速恢复生成来有效提高燃油消耗。 解决方案：在将目标L / U滑移量设定为比常规值小（例如10rpm）的值之后，在减速恢复生成期间执行L / U滑移控制时，发电机被驱动用于减速恢复生成 一个取决于减速条件。 以这种方式，即使当在用于减速恢复生成的时段期间执行L / U滑移控制时发电机被驱动用于减速恢复生成时，L / U滑移量也被控制为比通常的小。 因此，通过车辆的减速能力（变矩器的输出轴转速）来抑制发动机转速的急剧下降。 因此，在减速燃料切断期间执行L / U滑移控制和减速恢复生成的组合的同时，可以防止发动机转速的急剧下降，减速燃料切断期间和减速恢复发生期间延长。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2003120437A

公开(公告)日：2003-04-23

申请号：JP2001320468

申请日：2001-10-18

Applicant: DENSO CORP

Inventor： MORINAGA SHUJIRO ,  MAEKAWA YOSHINORI ,  WAKAHARA KEIJI ,  MIWA MAKOTO

IPC: G01M3/26 ,  F02D41/04 ,  F02M25/08 ,  G01M15/04 ,  G01M15/00

Abstract: PROBLEM TO BE SOLVED: To prevent erroneous diagnosis of a leakage in an evaporation gas purging system, caused by the opening of a filler cap of a fuel tank, in diagnosing the leakage during the stopping of an engine. SOLUTION: After detecting the residual quantity of fuel when an ignition switch is at OFF (when the engine stops), this leakage diagnostic apparatus starts the diagnosis of the leakage, temporarily determines the presence or absence of the leakage, and stores the result of the diagnosis in a backup RAM or the like (steps 101 to 105). When the ignition switch is at ON (when the engine starts), the leakage diagnostic apparatus detects the residual quantity of fuel, compares the residual quantity of fuel at the starting of the engine with that at the previous stopping of the engine, and determines whether the filler cap is open or not during the stopping of the engine (steps 106 to 108). If the filler cap is open during the stopping of the engine, the apparatus ignores the result of the diagnosis of the leakage. If the filler cap is not open, it determines the result of the diagnosis of the leakage as the final result of the diagnosis of the leakage as it is (steps 109 to 110).

公开(公告)号：JP2003083175A

公开(公告)日：2003-03-19

申请号：JP2001274767

申请日：2001-09-11

Applicant: Denso Corp ,  株式会社デンソー

Inventor： MIWA MAKOTO ,  MORINAGA SHUJIRO ,  MAEKAWA YOSHINORI ,  WAKAHARA KEIJI

IPC: G01M3/26 ,  F02M25/08

Abstract: PROBLEM TO BE SOLVED: To reduce the possibility of leakage in an evaporated gas purging system.
SOLUTION: An atmospheric air switching valve and a purge control valve are closed to start the diagnosis of leakage in a state of sealing an evaporation system, when an engine is stopped and the leakage diagnosis executing condition is satisfied. The pressure in a fuel tank, raised by the generation of evaporated gas during the diagnosis of leakage is quickly lowered approximately to the atmospheric pressure by releasing the sealed state of the evaporation system by opening the atmospheric air switching valve. Then, the internal pressure of the fuel tank is quickly lowered to negative pressure by utilizing the lowering of the internal pressure in the fuel tank in accompany with the lowering of a fuel temperature. As the evaporation system is kept in negative pressure thereafter, only the atmospheric air is sucked in the evaporation system from a hole even when the small hole is formed on the evaporation system, and the leakage of the evaporated gas in the evaporation system into the atmospheric air is prevented.
COPYRIGHT: (C)2003,JPO

Abstract translation: 要解决的问题：减少蒸发气体净化系统泄漏的可能性。 解决方案：当发动机停止并满足泄漏诊断执行条件时，关闭气氛切换阀和清洗控制阀以开始密封蒸发系统的状态下的泄漏诊断。 通过打开大气切换阀，通过释放蒸发系统的密封状态，在诊断泄漏期间通过产生蒸发气体而升高的燃料箱中的压力快速降低到大气压力。 然后，随着燃料温度的降低，利用燃料箱内部压力的降低，燃料箱的内部压力迅速降低到负压。 随着蒸发系统在此之后保持为负压，即使在蒸发系统上形成小孔时，也只有空气从孔中吸入蒸发系统，并且蒸发系统中的蒸发气体泄漏到大气中 防止空气

公开(公告)号：JP2003074422A

公开(公告)日：2003-03-12

申请号：JP2001266638

申请日：2001-09-04

Applicant: Denso Corp ,  株式会社デンソー

Inventor： MORINAGA SHUJIRO ,  MAEKAWA YOSHINORI ,  WAKAHARA KEIJI ,  MIWA MAKOTO

IPC: B60K15/077 ,  F02M25/08

Abstract: PROBLEM TO BE SOLVED: To prevent a fuel component adsorbed in a canister from being blown out to the atmospheric air when an evaporation system is opened to the atmospheric air after the termination of leakage diagnosis when the leakage is diagnosed in a state of sealing the evaporation system after the stop of an engine.
SOLUTION: The operation for sealing the evaporation system, then temporarily opening the evaporation system every time when the pressure of the evaporation system reaches a predetermined limited pressure to lower the pressure of the evaporation system approximately to the atmospheric pressure, and then resealing the evaporation system is repeated during the leakage diagnosing period after the stop of the engine. A detected value of the pressure of the evaporation system is integrated for a predetermined operation period during the leakage diagnosing period. Here, the detected value of the pressure of the evaporation system is corrected and integrated in accordance with the frequency of the reaching of the pressure of the evaporation system to the predetermined limited pressure, and an integrated value is compared with a leakage determination value to diagnose the presence or absence of the leakage of the evaporating system. Further the presence or absence of the leakage of the evaporation system may be diagnosed on the basis of the frequency of the reaching of the pressure of the evaporation system to the predetermined limited value during the leakage diagnosing period.
COPYRIGHT: (C)2003,JPO

Abstract translation: 要解决的问题：为了防止当在密封蒸发状态下诊断泄漏时在泄漏诊断结束之后向蒸发系统向大气中的蒸发系统吹出时将吸附在罐中的燃料成分吹向大气中 系统停止发动机后。 解决方案：用于密封蒸发系统的操作，然后每当当蒸发系统的压力达到预定的限制压力时临时打开蒸发系统，以将蒸发系统的压力降低到大气压力，然后重新密封蒸发系统 在发动机停止后的泄漏诊断期间重复。 在泄漏诊断期间，在规定的运转期间内积分蒸发系统的压力的检测值。 这里，将蒸发系统的压力的检测值根据蒸发系统的压力达到预定限制的压力的频率进行校正和积分，并将积分值与泄漏判定值进行比较以诊断 是否存在蒸发系统的泄漏。 此外，蒸发系统的泄漏的存在或不存在可以基于在泄漏诊断期间达到预定限制值的蒸发系统的压力的频率来诊断。

公开(公告)号：JP2003056417A

公开(公告)日：2003-02-26

申请号：JP2001249345

申请日：2001-08-20

Applicant: Denso Corp ,  株式会社デンソー

Inventor： MAEKAWA YOSHINORI ,  MORINAGA SHUJIRO ,  WAKAHARA KEIJI ,  MIWA MAKOTO

IPC: F02M25/08

Abstract: PROBLEM TO BE SOLVED: To provide an abnormality diagnostic device for an evaporated gas purge system of an internal combustion engine capable of reducing power consumption during halts of an engine, and improving detection accuracy.
SOLUTION: During operation of an engine, an abnormality diagnosis for an evaporated gas purge system is performed by a negative pressure monitor program, then only when ϕ0.5 tentative abnormality judgment is made, ϕ0.5 tentative abnormality judgment shown in (c) is determined to perform an abnormality diagnosis by an inner pressure monitor program during halts of an engine. Thus, the final judgment on ϕ0.5 leak is determined by the inner pressure monitor program with low disturbance, thereby performing the abnormality diagnosis with high accuracy. Furthermore, the inner pressure monitor program is carried out only when the judgment on ϕ0.5 tentative abnormality is determined, thereby reducing electric power consumed by ECU during halts.
COPYRIGHT: (C)2003,JPO

Abstract translation: 要解决的问题：提供能够降低发动机停止时的功率消耗的内燃机的蒸发气体吹扫系统的异常诊断装置，提高检测精度。 解决方案：在发动机运转中，通过负压监视程序执行蒸发气体净化系统的异常诊断，然后仅在进行了φ0.5暂定异常判定时，（c）中所示的暂定异常判定为 被确定为在发动机停止期间通过内部压力监视程序执行异常诊断。 因此，φ0.5泄漏的最终判断由具有低扰动的内压监视程序确定，从而以高精度执行异常诊断。 此外，只有在确定了φ0.5暂定异常的判断时才进行内部压力监视程序，从而减少停止时ECU消耗的电力。