公开(公告)号：US20020143459A1

公开(公告)日：2002-10-03

申请号：US10107490

申请日：2002-03-28

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Kenji Oota ,  Hiroshi Iwano ,  Hiroyuki Itoyama ,  Takeshi Ishino ,  Kensuke Osamura

IPC: G05D001/00

CPC classification number: F02D41/0002 ,  F02D35/0023 ,  F02D41/005 ,  F02D41/0072 ,  F02D41/1458 ,  F02D41/1497 ,  F02D41/263 ,  F02D2200/0402 ,  F02D2200/0614 ,  F02D2200/1004 ,  F02D2250/18 ,  Y02T10/42 ,  Y02T10/47

Abstract: A method for controlling an engine comprises establishing a torque correction coefficient (KA) to compensate for reducing effect of available engine torque in operating range of different excess air ratios (null) that are lower than a predetermined value (unitynull1). An initial base desired in-cylinder air mass (tQacb) is determined based on a requested engine torque (tTe). A desired excess air ratio (tnull) is determined. The initial base desired in-cylinder air mass (tQacb) is adjusted with at least the desired excess air ratio (tnull) and the correction coefficient (KA) to generate a desired in-cylinder air mass (tQac). A desired injected fuel mass (tQf) is controlled based on the desired in-cylinder air mass (tQac) to deliver the requested engine torque (tTe) with the desired excess air ratio (tnull) held accomplished.

Abstract translation: 一种用于控制发动机的方法，包括建立扭矩校正系数（KA），以补偿在低于预定值（unity = 1）的不同过量空气比（lambd）的操作范围内的可用发动机转矩的减小效果。 基于要求的发动机扭矩（tTe）确定期望的缸内空气质量（tQacb）的初始底座。 确定期望的过量空气比（tlambd）。 用至少所需的过量空气比（tlambd）和校正系数（KA）来调节初始底座所需的缸内空气质量（tQacb）以产生所需的缸内空气质量（tQac）。 基于期望的缸内空气质量（tQac）来控制期望的喷射燃料质量（tQf），以便以所保持的期望的过量空气比（tlambd）输送要求的发动机扭矩（tTe）。

公开(公告)号：US20020100454A1

公开(公告)日：2002-08-01

申请号：US10042212

申请日：2002-01-11

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Hiroyuki Itoyama ,  Hiroshi Iwano ,  Kensuke Osamura ,  Kenji Oota

IPC: F02D041/00

CPC classification number: F02D41/1497 ,  F02D21/08 ,  F02D35/0007 ,  F02D41/005 ,  F02D41/0072 ,  F02D2041/0017 ,  F02D2041/1418 ,  F02D2041/389 ,  F02D2200/0402 ,  F02D2200/0406 ,  F02D2200/0408 ,  F02D2200/1004 ,  F02D2200/703 ,  F02D2250/18 ,  F02M26/05 ,  F02M26/10 ,  Y02T10/47

Abstract: An air-fuel ratio control system for an internal combustion engine is comprised of an engine condition detecting unit and a control unit. The control unit is arranged to calculate a target engine torque on the basis of an engine operating condition, to calculate a target EGR ratio, a target excess air ratio and a target intake air quantity on the basis of the engine operating condition and the target engine torque, to calculate a target equivalence ratio on the basis of the target EGR ratio and the target excess air ratio, to calculate a target injection quantity on the basis of the engine operating condition and the target equivalence ratio, and to control an air-fuel ratio by bringing a real intake air quantity to the target intake air quantity and by bringing a real fuel injection quantity to the target fuel injection quantity.

Abstract translation: 用于内燃机的空燃比控制系统包括发动机状态检测单元和控制单元。 控制单元被配置为基于发动机运转状况来计算目标发动机转矩，基于发动机运转状况和目标发动机来计算目标EGR率，目标过量空气比和目标吸入空气量 扭矩，基于目标EGR率和目标过剩空气比来计算目标当量比，基于发动机工作条件和目标当量比来计算目标喷射量，并且控制空气燃料 通过将实际进气量与目标进气量进行比较，并将实际燃料喷射量设定为目标燃料喷射量。

公开(公告)号：US20030088357A1

公开(公告)日：2003-05-08

申请号：US10270244

申请日：2002-10-15

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Hiroyuki Itoyama

IPC: G06F017/00

CPC classification number: F02D41/0072 ,  F01N13/107 ,  F02B29/0406 ,  F02B37/007 ,  F02B37/24 ,  F02M26/08 ,  F02M26/23 ,  F02M26/33 ,  F02M26/43 ,  Y02T10/144 ,  Y02T10/47

Abstract: A vehicle system controls a compression ignition internal combustion engine equipped with a supercharger system including a plurality of superchargers. The compression ignition internal combustion engine has an exhaust gas recirculation (EGR) system. The vehicle system determines a desired intake manifold supercharging state (tQac) and a desired EGR rate (Megr). The vehicle system includes control logics, each having a first input parameter and a second input parameter, for determining desired set points (Rvnt1 & Rvnt2) for the plurality of superchargers, respectively. The desired set points are used to control the plurality of superchargers, respectively. The vehicle system also includes control logic for determining the first input parameters in response to the desired intake manifold supercharging state. The vehicle system further includes control logic for determining the second input parameters in response to the desired EGR rate.

Abstract translation: 车辆系统控制配备有包括多个增压器的增压器系统的压缩点火内燃机。 压缩点火式内燃机具有废气再循环（EGR）系统。 车辆系统确定期望的进气歧管增压状态（tQac）和期望的EGR率（Megr）。 车辆系统包括分别具有第一输入参数和第二输入参数的控制逻辑，用于分别确定多个增压器的期望的设定点（Rvnt1＆Rvnt2）。 所需的设定点分别用于控制多个增压器。 车辆系统还包括用于响应于期望的进气歧管增压状态来确定第一输入参数的控制逻辑。 车辆系统还包括用于响应于期望的EGR率来确定第二输入参数的控制逻辑。

公开(公告)号：US20030213235A1

公开(公告)日：2003-11-20

申请号：US10441114

申请日：2003-05-20

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Yasuhisa Kitahara ,  Manabu Miura ,  Hiroyuki Itoyama ,  Takashi Shirakawa

IPC: F01N003/00 ,  F01N003/10 ,  F01N005/04

CPC classification number: B01D53/9495 ,  B01D53/9431 ,  F01N3/021 ,  F01N3/0842 ,  F01N13/009 ,  F01N2570/04 ,  F02B29/0406 ,  F02B29/0493 ,  F02B37/00 ,  F02D41/0275 ,  F02D41/028 ,  F02D41/029 ,  F02M26/05 ,  F02M26/10

Abstract: A diesel particulate filter 14 that traps particulate matters in an exhaust gas and a NOx trap catalyst 13 that traps NOx in the exhaust gas are disposed in an exhaust passage (10) in an internal combustion engine (1). When a regeneration timing of the diesel particulate filter (14) and one of a regeneration timing of SOx and a regeneration timing of NOx are overlapped, the diesel particulate filter regeneration is carried out first and thereafter, the SOx regeneration or the NOx regeneration is carried out.

Abstract translation: 在内燃机（1）的排气通道（10）中设置有捕集废气中的颗粒物的柴油微粒过滤器14和捕集废气中的NOx的NOx捕集催化剂13。 当柴油机微粒过滤器（14）的再生定时和SOx的再生正时和NOx再生正时之一重叠时，首先进行柴油机微粒过滤器再生，此后进行SOx再生或NOx再生 出来

公开(公告)号：US20030188518A1

公开(公告)日：2003-10-09

申请号：US10407332

申请日：2003-04-07

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Hiroyuki Itoyama ,  Yasuhisa Kitahara

IPC: B01D046/00

CPC classification number: F01N3/0842 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0821 ,  F01N9/002 ,  F01N13/009 ,  F01N2250/02 ,  F01N2250/12 ,  F01N2250/14 ,  F01N2330/06 ,  F01N2570/14 ,  F02B37/00 ,  F02D41/029 ,  F02D2200/0812 ,  F02M26/05 ,  F02M26/10 ,  Y02T10/47

Abstract: A particulate deposit amount Spm on a particulate filter disposed in an exhaust passage is estimated during a usual period different from a regeneration period of the particulate filter and during the regeneration period thereof respectively. An increase value Dpm per unit time of the Spm during the usual period is estimated based upon an engine operating condition and a total amount of the Spm is determined by integration thereof (S15, 16). On the other hand, a particulate deposit amount Spm decreasing by burning during the regeneration period is determined by, one by one, subtracting a decrease value Dpm per unit time estimated based upon a particulate deposit amount Spmi that is determined by the above integration at a starting point of the regeneration period from the Spmi (S12, 17).

Abstract translation: 在与微粒过滤器的再生期间和再生期间分别不同的通常期间，估计设置在排气通道中的颗粒过滤器上的颗粒沉积量Spm。 根据发动机运转状况来估计通常期间的Spm的每单位时间的增加值Dpm，并且通过积分确定Spm的总量（S15,16）。 另一方面，在再生期间通过燃烧减少的颗粒物沉积量Spm通过逐个减去基于由上述积分确定的颗粒沉积量Spmi估计的每单位时间的减小值Dpm来确定 来自Spmi的再生期的起点（S12,17）。

公开(公告)号：US20020179072A1

公开(公告)日：2002-12-05

申请号：US10131321

申请日：2002-04-25

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Hiroyuki Itoyama ,  Takanobu Aikawa

IPC: F02D041/00

CPC classification number: F02D41/0072 ,  F02D41/401 ,  F02D2041/1431 ,  Y02T10/44 ,  Y02T10/47

Abstract: In a diesel engine (1) provided with an exhaust gas recirculation mechanism (9, 10), a fuel injection timing is calculated by considering a delay of air aspirated by the cylinders of the engine (1) and a delay of exhaust gas recirculation. By performing fuel injection based on this fuel injection timing, conditions of combustion in a cylinder of the engine (1) are improved.

Abstract translation: 在设置有废气再循环机构（9,10）的柴油发动机（1）中，通过考虑由发动机（1）的气缸吸入的空气的延迟和废气再循环的延迟来计算燃料喷射正时。 通过基于该燃料喷射正时进行燃料喷射，能够提高发动机（1）的气缸中的燃烧条件。

公开(公告)号：US20020139361A1

公开(公告)日：2002-10-03

申请号：US10093914

申请日：2002-03-11

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Hiroyuki Itoyama ,  Hiroshi Iwano ,  Kensuke Osamura ,  Kenji Oota

IPC: F02M025/07 ,  F02B047/08 ,  G06F007/00 ,  F02D041/04

CPC classification number: F02D41/0275 ,  F01N3/0842 ,  F02B29/0406 ,  F02D21/08 ,  F02D23/00 ,  F02D41/005 ,  F02D41/0052 ,  F02M26/05 ,  F02M26/10 ,  F02M26/47 ,  Y02T10/144 ,  Y02T10/47

Abstract: In air-fuel ratio control apparatus and method for an internal combustion engine having an EGR valve interposed in an EGR passage between an intake manifold and an exhaust manifold, a target EGR quantity is calculated, a determination is made which of air-fuel ratio feedback controls through an EGR control and through an intake-air quantity is to be executed according to the target EGR quantity, and one of the air-fuel ratio feedback controls is selectively made according to a result of a determination of which of the air-fuel feedback controls is to be executed. During an execution of a rich spike control, the feedback control through the intake-air quantity control is unconditionally executed.

Abstract translation: 在具有插入在进气歧管和排气歧管之间的EGR通路中的EGR阀的内燃机的空燃比控制装置和方法中，计算目标EGR量，确定空燃比反馈 根据目标EGR量执行通过EGR控制和通过进气量的控制，并且根据确定哪个空气燃料的结果选择性地进行空燃比反馈控制之一 反馈控制将被执行。 在执行丰富的尖峰控制期间，无条件地执行通过进气量控制的反馈控制。

公开(公告)号：US20020124832A1

公开(公告)日：2002-09-12

申请号：US09989118

申请日：2001-11-21

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Kenji Oota ,  Hiroyuki Itoyama ,  Hiroshi Iwano ,  Kensuke Osamura ,  Takeshi Ishino

IPC: F02M051/00

CPC classification number: F02D43/00 ,  F01N3/0842 ,  F02B29/0406 ,  F02B37/24 ,  F02D21/08 ,  F02D41/0007 ,  F02D41/0072 ,  F02D41/0275 ,  F02D41/1454 ,  F02D41/146 ,  F02D41/1461 ,  F02D41/18 ,  F02D2041/0017 ,  F02D2041/1432 ,  F02D2200/0402 ,  F02D2250/21 ,  F02M26/05 ,  Y02T10/144 ,  Y02T10/47 ,  Y10T477/68

Abstract: A basic target excess air factor tLAMBDA0 and a target fresh air intake amount tQac are set base upon the operation condition of an engine (30). A target excess air factor tLAMBDA is calculated by multiplying the ratio of a real fresh air intake amount rQac as detected by a sensor (16) and the target fresh air intake amount tQac by the basic target excess air factor tLAMBDA0. A fuel injector (9) is controlled so that the amount of fuel injected thereby converges to a target fuel injection amount tQf which corresponds to the target excess air factor tLAMBDA. It is possible to prevent variation of the output torque of the engine (30) accompanying a rich spike by this control, even if the basic target excess air factor tLAMBDA0 varies abruptly, since the fuel injection amount varies in correspondence to the variation of the real fresh air intake amount rQac.

Abstract translation: 基于发动机（30）的运转状态设定基本目标多余空气因子tLAMBDA0和目标新鲜空气吸入量tQac。 通过将由传感器（16）检测到的实际新鲜空气吸入量rQac与目标空气吸入量tQac的比乘以基本目标多余空气因子tLAMBDA0来计算目标多余空气因子tLAMBDA。 控制燃料喷射器（9），使得喷射的燃料量因此收敛到对应于目标多余空气系数tLAMBDA的目标燃料喷射量tQf。 即使基本目标过剩空气因子tLAMBDA0突然变化，也可以防止由该控制引起的伴随着丰富尖峰的发动机（30）的输出转矩的变化，因为燃料喷射量根据实际的变化而变化 新鲜进气量rQac。

公开(公告)号：US20010045210A1

公开(公告)日：2001-11-29

申请号：US09842117

申请日：2001-04-26

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Hiroyuki Itoyama

IPC: F02M025/07

CPC classification number: F02D41/0065 ,  F02B37/24 ,  F02D23/00 ,  F02M26/05 ,  F02M26/10 ,  F02M26/28 ,  F02M26/33 ,  F02M26/57 ,  F02M47/027 ,  Y02T10/144 ,  Y02T10/47

Abstract: A control unit (41) sets a target opening of a variable nozzle (53) of a turbocharger (50) according to a running condition of a diesel engine (1), and controls the opening of the variable nozzle (53) to the target opening. The control unit (41) calculates a target opening area of an exhaust gas recirculation valve (6) using the target opening of the variable nozzle (53) and a target exhaust gas recirculation amount determined according to the running condition. Control of an exhaust gas recirculation amount is performed according to the variation of turbocharging pressure by using the target opening of the variable nozzle (53) as a parameter representing the differential pressure upstream and downstream of the exhaust gas recirculation valve (6).

Abstract translation: 控制单元（41）根据柴油发动机（1）的运转状态设定涡轮增压器（50）的可变喷嘴（53）的目标开度，并将可变喷嘴（53）的开度控制在目标 开放 控制单元（41）使用可变喷嘴（53）的目标开口和根据运行条件确定的目标废气再循环量来计算排气再循环阀（6）的目标开口面积。 通过使用可变喷嘴（53）的目标开度作为表示废气再循环阀（6）上游和下游的压差的参数，根据涡轮增压压力的变化来执行废气再循环量的控制。