公开(公告)号：US20180051647A1

公开(公告)日：2018-02-22

申请号：US15242188

申请日：2016-08-19

申请人： Ford Global Technologies, LLC

发明人： Adithya Pravarun Re Ranga ,  Gopichandra Surnilla ,  Joseph Lyle Thomas ,  Ethan D. Sanborn ,  Mark Thomas Linenberg ,  Kenneth John Behr

IPC分类号： F02D41/40 ,  F02D35/00 ,  F02D41/26 ,  F02D41/14

CPC分类号： F02D41/402 ,  F02D35/0092 ,  F02D41/1454 ,  F02D41/2467 ,  F02D41/26 ,  F02D41/3094 ,  F02D2041/389

摘要： Systems and methods for determining air-fuel error in an engine fueled via direct and port fuel injection. Errors associated with individual fuel injection systems are distinguished from a common error based on trends in the error correction coefficients of the individual fuel injection systems. Adaptive fuel multipliers for each injection system are updated to account for the common error.

公开(公告)号：US20150260118A1

公开(公告)日：2015-09-17

申请号：US14435041

申请日：2013-10-12

申请人： AUDI AG

发明人： Bodo Odendall

IPC分类号： F02D41/02 ,  F02D35/00 ,  F02D41/14

CPC分类号： F02D41/0295 ,  F02D35/0092 ,  F02D41/1402 ,  F02D41/1455 ,  F02D41/1456 ,  F02D41/2438 ,  F02D2200/0814

摘要： A method for operating an internal combustion engine includes the steps of determining an oxygen filling state of an oxygen storage of a catalytic converter by way of a first lambda signal provided by a first lambda probe and an offset value, the first lambda probe being arranged in an exhaust gas stream upstream of the catalytic converter; when a second lambda signal provided by a second lambda probe arranged in the exhaust gas stream upstream of the catalytic converter falls below a lower lambda signal threshold, setting the oxygen filling state to a first value corresponding to an empty oxygen storage and/or when the second lambda signal exceeds a upper lambda signal threshold setting the oxygen filling state to a second value corresponding to a full oxygen storage; immediately thereafter regulating the oxygen filling state during at least one regulation time period to a target filling state; and after expiration of the regulation time period adjusting the offset value by way of the second lambda signal.

摘要翻译： 用于操作内燃机的方法包括以下步骤：通过由第一λ探针提供的第一λ信号和偏移值来确定催化转化器的氧气储存状态，第一λ探针被布置在 催化转化器上游的废气流; 当布置在催化转化器上游的废气流中的第二λ探针提供的第二λ信号落在低于λ信号阈值以下时，将氧填充状态设定为对应于空氧储存的第一值和/或当 第二λ信号超过上λ信号阈值，将氧填充状态设定为对应于全氧储存的第二值; 此后立即将至少一个调节时间段内的充氧状态调节至目标填充状态; 并且在调节时间段期满后，通过第二λ信号调整偏移值。

公开(公告)号：US20150073682A1

公开(公告)日：2015-03-12

申请号：US14348312

申请日：2013-05-14

申请人： Yoshiyasu Ito

发明人： Yoshiyasu Ito

IPC分类号： F02D41/32 ,  F02D41/14

CPC分类号： F02D41/32 ,  F02D35/0092 ,  F02D41/14 ,  F02D41/1402 ,  F02D2041/224 ,  F02D2200/0614

摘要： A microcomputer determines, in a first monitoring routine, whether a required injection amount was normally computed in a fuel injection amount control routine, based on the required injection amount computed in the fuel injection amount control routine, and detected values of engine operating conditions used for computation of the required injection amount in the routine, and determines, in a second monitoring routine, whether an injector was normally driven based on the required injection amount, based on the required injection amount computed in the fuel injection amount control routine, and a measurement result of a current application period of injector drive current.

摘要翻译： 微型计算机在第一监视程序中，基于在燃料喷射量控制程序中计算的所需喷射量，确定在燃料喷射量控制程序中是否正常地计算所需喷射量，以及用于 计算程序中所需的喷射量，并且在第二监视程序中，基于在燃料喷射量控制程序中计算的所需喷射量，基于所需喷射量来确定喷射器是否被正常地驱动，以及测量 注射器驱动电流的当前应用周期的结果。

公开(公告)号：US6116208A

公开(公告)日：2000-09-12

申请号：US199449

申请日：1998-11-25

申请人： Hirofumi Nishimura ,  Youichi Kuji

发明人： Hirofumi Nishimura ,  Youichi Kuji

IPC分类号： F01N3/08 ,  F02D35/00 ,  F02D41/00 ,  F02D41/02 ,  F02D41/30 ,  F02D41/40 ,  F02B17/00 ,  F01N3/20 ,  F02M25/07

CPC分类号： F02D41/005 ,  F01N3/0842 ,  F02D35/0092 ,  F02D41/0275 ,  F02D41/3029 ,  F02D41/402 ,  F02D2041/389 ,  F02D2200/0806 ,  Y02T10/128 ,  Y02T10/148 ,  Y02T10/44 ,  Y02T10/47

摘要： An engine control system for a direct injection-spark ignition type of engine which is equipped with an exhaust system having a lean NOx conversion catalyst for lowering a NOx level of exhaust gas while the engine operates in a lean fuel charge zone controls the engine to make stratified charge combustion in a zone of partial engine loadings and homogeneous charge combustion in a zone other than said partial engine loading zone and, while the engine operates in a zone where enriched homogeneous charge combustion is made, divides a given amount of fuel into two parts and sprays them through early and late split injection in a intake stroke and admits exhaust gas partly into an intake air stream introduced into the intake system from the exhaust system while the early and late split injection are made. The split injection are caused such that a midpoint between points at which the early and late split injection are timed to start before a midpoint of a intake stroke.

摘要翻译： 一种用于直喷式火花点火式发动机的发动机控制系统，其具有排气系统，该排气系统具有用于在发动机在稀燃燃料装料区域内运转时降低废气NOx排放量的稀NOx转化催化剂，从而控制发动机 在除了所述部分发动机装载区域之外的区域中的部分发动机装载区域和均质燃料燃烧中的分层燃料燃烧，并且当发动机在进行富集的均质燃料燃烧的区域中运行时，将给定量的燃料分成两部分 并且在进气冲程中通过早期和晚期分段喷射喷射它们，并且在进行早期和晚期分离喷射的同时将废气部分地从排气系统引入到引入进气系统的进气流中。 引起分流喷射使得早期和晚期分离喷射的点之间的中点在进气冲程的中点之前被定时开始。

公开(公告)号：US5207058A

公开(公告)日：1993-05-04

申请号：US791886

申请日：1991-11-13

申请人： Shizuo Sasaki ,  Takanori Ueda

发明人： Shizuo Sasaki ,  Takanori Ueda

IPC分类号： F01N3/20 ,  F01N3/24 ,  F01N3/36 ,  F01N3/38 ,  F02B23/10 ,  F02B75/12 ,  F02D35/00 ,  F02D41/02 ,  F02D41/04 ,  F02D41/06 ,  F02D41/34 ,  F02D41/40 ,  F02F1/24 ,  F02F1/42 ,  F02F3/26 ,  F02P15/08

CPC分类号： F02B23/104 ,  F01N3/2006 ,  F01N3/204 ,  F02D35/0092 ,  F02D41/024 ,  F02D41/025 ,  F02D41/405 ,  F02F1/4214 ,  F02F3/26 ,  F02P15/08 ,  F02B2023/108 ,  F02B2075/125 ,  F02D2041/389 ,  F02D2200/0802 ,  F02F2001/245 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/22 ,  Y02T10/26 ,  Y02T10/44

摘要： An internal combustion engine includes fuel injectors which directly inject high pressure fuel into combustion chambers of the engine. Spark plugs are provided in the combustion chambers, a catalytic converter is provided in the middle of the exhaust pipe for purifying the exhaust, and a temperature sensor is provided for detecting the temperature of a catalyst of the catalytic converter. A control unit which receives as input the engine rotational speed, load, and the detection value of the catalyst temperature sensor controls the engine such that, when the temperature of the catalyst is lower than a predetermined target temperature, the fuel injectors inject additional fuel into the combustion chambers during at least one of the expansion stroke and the exhaust stroke to mix the fuel with the exhaust. Thereafter, the exhaust having the additional fuel mixed in is reignited upstream of the catalytic converter to heat the catalyst to the target temperature.

摘要翻译： 内燃机包括直接将高压燃料喷射到发动机的燃烧室中的燃料喷射器。 火花塞设置在燃烧室中，催化转化器设置在排气管的中间，用于净化排气，并提供温度传感器，用于检测催化转化器的催化剂的温度。 接收作为输入的催化剂温度传感器的发动机转速，负载和检测值的控制单元控制发动机，使得当催化剂的温度低于预定目标温度时，燃料喷射器将附加燃料喷入 在膨胀冲程和排气冲程中的至少一个期间的燃烧室将燃料与排气混合。 此后，混合有附加燃料的废气在催化转化器的上游重新点燃，将催化剂加热至目标温度。

公开(公告)号：US4040408A

公开(公告)日：1977-08-09

申请号：US601991

申请日：1975-08-05

申请人： Bernd Kraus ,  Otto Glockler

发明人： Bernd Kraus ,  Otto Glockler

IPC分类号： F02D41/34 ,  F02D3/02 ,  F02D35/00 ,  F02M69/26 ,  F02B3/00 ,  F02M39/00

CPC分类号： F02D35/0092 ,  F02D35/00 ,  F02M69/26

摘要： A fuel supply and metering valve assembly used for fuel injection to an internal combustion engine includes a control pressure circuit which determines the restoring force on the movable valve member of the metering valve. The magnitude of the control pressure, and hence the fuel quantity metered out by the valve assembly, can be altered by intermittent actuation of a pressure relief valve whose duty cycle is controlled by an oxygen sensor located in the exhaust line of the engine. The oxygen sensor voltage is superimposed on a sawtooth voltage at the input of a control circuit which varies the duty cycle of the bypass valve. When the oxygen sensor is too cold to generate an output signal, the control circuit is provided with a temporary control signal supplied by a timing circuit until the oxygen sensor has reached its normal temperature and generates an output signal.

摘要翻译： 用于燃料喷射到内燃机的燃料供给和计量阀组件包括控制压力回路，该控制压力回路确定计量阀的可动阀件上的恢复力。 控制压力的大小以及因此由阀组件计量出的燃料量可以通过间歇地致动压力释放阀来改变，该压力释放阀的占空比由位于发动机的排气管线中的氧传感器控制。 氧传感器电压叠加在控制电路的输入端的锯齿波电压上，该输入改变旁路阀的占空比。 当氧气传感器太冷而不能产生输出信号时，控制电路提供有由定时电路提供的临时控制信号，直到氧气传感器达到其常温并产生输出信号。

公开(公告)号：US3960118A

公开(公告)日：1976-06-01

申请号：US470304

申请日：1974-05-15

申请人： Toshiaki Konomi ,  Hiroshi Koide

发明人： Toshiaki Konomi ,  Hiroshi Koide

IPC分类号： F02D41/34 ,  F02D3/04 ,  F02D35/00 ,  F02D41/14 ,  F02M1/08 ,  F02M7/00 ,  F02M7/133 ,  F02M7/24 ,  F02B3/00 ,  F02D1/06

CPC分类号： F02D41/3094 ,  F02D35/0092 ,  F02D41/1482 ,  F02M7/133 ,  Y10S261/08 ,  Y10S261/74 ,  Y10S261/82

摘要： An air-fuel ratio adjusting device in an internal combustion engine having a carburetor, comprising an oxygen sensor whereby oxygen concentration in the exhaust gas is detected and control means whereby the detected oxygen concentration is compared with the air-fuel ratio in the mixture and an output signal corresponding to the difference therebetween is produced, the output signal being applied to an electromagnetic fuel injection system provided in the carburetor. A regulator is provided between the main fuel supply system and the electromagnetic fuel injection system in the carburetor. Also, a cold start nozzle which is controlled on engine starting is provided in the intake system.

摘要翻译： 具有化油器的内燃机中的空燃比调节装置，包括氧传感器，其中检测到废气中的氧浓度，并且将检测的氧浓度与混合物中的空燃比进行比较的控制装置和 产生与它们之间的差异对应的输出信号，输出信号被施加到设置在化油器中的电磁燃料喷射系统。 在主燃料供给系统和化油器中的电磁燃料喷射系统之间设置调节器。 另外，在进气系统中设置有控制发动机起动的冷启动喷嘴。

公开(公告)号：US20190195148A1

公开(公告)日：2019-06-27

申请号：US16207417

申请日：2018-12-03

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Tomoyuki ONO

IPC分类号： F02D35/00 ,  F02D41/00 ,  F02D41/30

CPC分类号： F02D35/0092 ,  F02D35/027 ,  F02D35/028 ,  F02D41/0045 ,  F02D41/3011 ,  F02D41/3082 ,  F02D41/3094 ,  F02D41/401 ,  F02D2041/1432 ,  F02D2041/281 ,  F02D2041/389 ,  F02D2200/0618 ,  F02M61/14 ,  F02M69/50 ,  G01M15/12

摘要： A control device for an internal combustion engine includes an electronic control unit. The electronic control unit is configured to control an injection amount and an injection timing of fuel to a target injection amount and a target injection timing set based on an engine operation state, detect an ignition timing of fuel based on a vibration component of an engine body in a specific frequency bandwidth, and correct at least one of the target injection amount and the target injection timing based on a deviation between the detected ignition timing and a target ignition timing according to the engine operation state. The specific frequency bandwidth is a bandwidth on a low frequency side of a frequency bandwidth where the engine body undergoes elastic vibration.

公开(公告)号：US20180010530A1

公开(公告)日：2018-01-11

申请号：US15202396

申请日：2016-07-05

申请人： Ford Global Technologies, LLC

发明人： Michael McQuillen ,  Gopichandra Surnilla ,  Richard E. Soltis ,  Daniel A. Makled

IPC分类号： F02D35/00 ,  F02D41/24 ,  F02D41/30 ,  F02D41/26 ,  F02D41/14 ,  F02D41/20

CPC分类号： F02D35/0092 ,  F02D41/0025 ,  F02D41/144 ,  F02D41/1456 ,  F02D41/1494 ,  F02D41/1495 ,  F02D41/2406 ,  F02D41/26 ,  F02D41/30 ,  F02D2041/2051 ,  F02D2041/389 ,  F02D2200/0418 ,  F02D2200/0612 ,  F02D2250/00 ,  F02M25/025

摘要： Methods and systems are provided for reducing blackening of an oxygen sensor due to voltage excursions into an over-potential region. Before transitioning the sensor from a lower voltage to an upper voltage during variable voltage operation, an operating temperature of the sensor is reduced via adjustments to a sensor heater setting. The reduction in temperature increases the range of temperatures available to the sensor before the over-potential region is entered.

公开(公告)号：US20170159615A1

公开(公告)日：2017-06-08

申请号：US14960697

申请日：2015-12-07

申请人： Caterpillar Inc.

发明人： Jaswinder SINGH ,  Martin L. WILLI

IPC分类号： F02M25/06 ,  F02D35/00 ,  F02D33/00

CPC分类号： F02M25/06 ,  F02B2201/04 ,  F02D19/12 ,  F02D33/006 ,  F02D35/0092 ,  F02D37/02 ,  F02D41/0025 ,  F02D41/1461 ,  F02D2200/101 ,  F02M25/00 ,  F02M35/10222

摘要： An engine system is disclosed. The engine system may have an engine including at least one cylinder. The engine system may also have a first source configured to supply fuel for combustion in the engine. The engine system may have a second source configured to supply ignition promoter material for combustion in the engine. The engine system may also have a droplet generator configured to generate droplets of the ignition promoter material. In addition the engine system may have a controller. The controller may be configured to determine an engine parameter. The controller may also be configured to determine a number of the droplets based on the engine parameter. Further, the controller may be configured to determine droplet sizes of the droplets based on the engine parameter. In addition, the controller may be configured to adjust the droplet generator to generate the number of the droplets having the droplet sizes.