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公开(公告)号：US20150369184A1
公开(公告)日：2015-12-24
申请号：US14742008
申请日：2015-06-17
CPC分类号： F02M35/10229 , F02B33/40 , F02M25/089 , F02M35/10157 , Y02T10/144
摘要： A boost purge ejector tee arrangement is integrated into a turbocompressor associated with an engine and includes first and second passages, an inlet port and a nozzle. The first passage is formed into a housing of the turbocompressor and includes an outlet in communication with a turbocompressor inlet. The second passage is formed into the housing and includes a boost air inlet in communication with an internal outlet area of the turbocompressor and intersecting the first passage. The inlet port is associated with the housing and intersects the first passage. The nozzle is positioned in the first passage such that an outlet of the nozzle is proximate the intersection of the inlet port and first passage. During a boost mode of operation, the second passage is adapted to receive boost air flow, which flows through the nozzle thereby creating a vacuum and drawing purge through the inlet port.
摘要翻译： 升压吹扫喷嘴三通装置集成到与发动机相关联的涡轮压缩机中，并包括第一和第二通道，入口和喷嘴。 第一通道形成涡轮压缩机的壳体并且包括与涡轮压缩机入口连通的出口。 第二通道形成到壳体中并且包括与涡轮压缩机的内部出口区域连通并与第一通道相交的增压空气入口。 入口与壳体相连，并与第一通道相交。 喷嘴定位在第一通道中，使得喷嘴的出口靠近入口和第一通道的交叉点。 在升压操作模式期间，第二通道适于接收流过喷嘴的增压空气流，从而产生真空并通过入口抽吸吹扫。
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公开(公告)号：US20170145927A1
公开(公告)日：2017-05-25
申请号：US14950275
申请日：2015-11-24
CPC分类号： F02D13/02 , F01L1/18 , F01L1/22 , F01L1/344 , F01L13/0036 , F01L2001/186 , F01L2800/10 , F01L2800/14 , F01L2820/043 , F02D13/0207 , F02D2041/001 , F02D2041/002 , F02D2200/0406 , F02D2200/0411 , F02D2250/21 , F02D2250/22 , F02M26/48 , Y02T10/18
摘要： A control technique for an engine having a two-step variable valve lift system includes a controller receiving a pressure in an intake manifold of the engine from a manifold absolute pressure (MAP) sensor and a position of an EGR valve of the engine from an exhaust gas recirculation (EGR) sensor. In response to the controller detecting an upcoming HL-to-LL valve state transition, a set of airflow actuators of the engine is controlled, based on the intake manifold pressure and the EGR valve position, to generate a first torque reserve. In response to generating the first torque reserve, the controller then commands the HL-to-LL transition and depletion of the first torque reserve during the HL-to-LL transition to mitigate torque disturbance associated with this transition.
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公开(公告)号：US20160305312A1
公开(公告)日：2016-10-20
申请号：US14686278
申请日：2015-04-14
申请人： Ayman Ismail , Brian Rockwell , John R. Bucknell , Ethan E. Bayer
发明人： Ayman Ismail , Brian Rockwell , John R. Bucknell , Ethan E. Bayer
CPC分类号： F02B37/183 , F02D41/0007 , F02D41/2464 , F02D2041/141 , F02D2041/2027 , F02D2250/16 , Y02T10/144
摘要： Techniques for learning endstop position(s) of an actuator for a wastegate valve include detecting a learn condition and, in response to detecting the learn condition, performing a learn procedure for the actuator endstop position(s). The learn procedure includes commanding the actuator to a desired position past the endstop position corresponding to a fully-closed wastegate valve while rate-limiting a velocity of the actuator. When the difference reaches its maximum allowed value and the velocity falls below a fraction of its rate limit, the endstop position is learned. When the wastegate valve is requested open, the actuator is then controlled using the learned endstop position. Reference stiffness for a fully-closed wastegate valve could be obtained, and subsequent stiffness checks could then be periodically performed and, if less than the reference stiffness, a duty cycle of the actuator could be increased during open-loop control.
摘要翻译： 用于学习用于废气门阀的致动器的止挡位置的技术包括检测学习状况，并且响应于检测到学习条件，执行致动器止挡位置的学习过程。 学习过程包括将速度限制致动器速度的速度限制在致动器的指令位置，超过对应于完全关闭的废气门阀的终止位置。 当差值达到其最大允许值并且速度低于其速率限制的一小部分时，将学习终止位置。 当废气阀被要求打开时，然后使用学习的止挡位置来控制致动器。 可以获得完全关闭的废气门阀的参考刚度，然后可以周期性地进行随后的刚度检查，并且如果小于参考刚度，则可以在开环控制期间增加致动器的占空比。
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4.发明申请CONTINUOUS ADAPTATION OF AN INTAKE OXYGEN SENSOR FOR PRESSURE, HUMIDITY AND AGING 有权用于压力，湿度和老化的摄入氧传感器的连续适应公开(公告)号：US20160061151A1
公开(公告)日：2016-03-03
申请号：US14834719
申请日：2015-08-25
CPC分类号： F02D41/0055 , F02D41/0052 , F02D41/2454 , F02D41/2474 , F02D2041/1472 , F02D2200/0418 , F02M26/46 , Y02T10/47
摘要： A technique is provided for compensating an untrimmed oxygen (O2) sensor utilized in operation of an exhaust gas recalculation (EGR) system associated with an engine. The technique includes, in one implementation, receiving a measurement from the O2 sensor at a known pressure, where the O2 sensor is positioned on an intake side of an engine system. Humidity compensation and pressure compensation are then determined for the O2 sensor measurement, where the pressure compensation is based in part on the humidity compensation. The EGR system is controlled using the untrimmed O2 sensor measurement that has been compensated for pressure and humidity.
摘要翻译： 提供了一种用于补偿在与发动机相关联的废气重新计算（EGR）系统的操作中使用的未调整氧（O 2）传感器的技术。 在一个实施方案中，该技术包括在已知压力下从O2传感器接收测量值，其中O 2传感器位于发动机系统的进气侧。 然后为O2传感器测量确定湿度补偿和压力补偿，其中压力补偿部分基于湿度补偿。 使用已经补偿了压力和湿度的未经测试的O2传感器测量来控制EGR系统。
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公开(公告)号：US20200157989A1
公开(公告)日：2020-05-21
申请号：US16664057
申请日：2019-10-25
申请人： Nikhil Patil , Sangeeta Theru , Ethan E. Bayer
发明人： Nikhil Patil , Sangeeta Theru , Ethan E. Bayer
摘要： Turbocharged engine water vapor ingestion control techniques determine a dew point of a charge air cooler (CAC) in an induction system of the engine based on measured humidity and temperature of a mixture of (i) air drawn into the induction system and (ii) exhaust gas produced by the engine that is cooled and recirculated by a low pressure cooled exhaust gas recirculation (LPCEGR) system of the engine back into the induction system. When the mixture temperature is less than the CAC dew point, a condensate accumulation in the CAC is determined. When the CAC condensate accumulation does not satisfy a set of one or more thresholds, the mixture temperature is increased. When the CAC condensate accumulation satisfies the set of one or more thresholds, an amount of the exhaust gas that is cooled and recirculated by the LPCEGR system is decreased until the mixture temperature meets the CAC dew point.
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公开(公告)号：US20190136747A1
公开(公告)日：2019-05-09
申请号：US15805335
申请日：2017-11-07
申请人： Shuonan Xu , David A. Lawrence , Ethan E. Bayer
发明人： Shuonan Xu , David A. Lawrence , Ethan E. Bayer
CPC分类号： F02B33/40 , F02B37/18 , F02B37/183 , F02D9/02 , F02D11/105 , F02D13/0261 , F02D41/0007 , F02D41/1446 , F02D41/1454 , F02D2041/001 , F02D2041/141 , F02D2041/1434 , F02D2200/021 , F02D2200/023 , F02D2200/0402 , F02D2200/0411 , F02D2200/0802 , F02D2200/101 , F02D2250/22 , Y02T10/144
摘要： Techniques for setting a boost target for a turbocharged engine comprise (i) operating the engine in a scavenging mode such that opening of intake and exhaust valves of cylinders of the engine overlap and (ii) while transitioning the engine in/out of the scavenging mode: determining an engine torque request, creating a torque reserve by setting independent targets for throttle inlet pressure (TIP) and intake manifold absolute pressure (MAP), determining a target TIP based on a target total air charge, engine speed, and a previously-determined target engine volumetric efficiency (VE), controlling a wastegate valve based on the target TIP, determining a target MAP based on the engine torque request, and controlling a throttle valve based on the target MAP. During steady-state scavenging operation, the controller calculates a conventional target TIP based on the engine torque request and controls the wastegate valve based on the conventionally calculated target TIP.
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公开(公告)号：US20160076471A1
公开(公告)日：2016-03-17
申请号：US14851033
申请日：2015-09-11
申请人： Ethan E. Bayer , Ayman Ismail , David A. Lawrence
发明人： Ethan E. Bayer , Ayman Ismail , David A. Lawrence
CPC分类号： F02D41/0082 , F01L1/34 , F01L2013/111 , F01L2800/11 , F01L2820/041 , F01L2820/042 , F02B75/22 , F02D13/0226 , F02D13/0238 , F02D41/0085 , F02D41/1405 , F02D41/1443 , F02D41/1454 , F02D41/2451 , F02D41/2454 , F02D2041/001 , F02D2200/0411 , Y02T10/18
摘要： An engine bank-to-bank airflow balancing technique includes calculating current and offset volumetric efficiencies of the engine and calculating a slope representing (i) a difference between the offset and current volumetric efficiencies and (ii) a difference between offset and current intake camshaft positions. Based on the respective exhaust gas oxygen concentrations, the technique involves calculating a volumetric efficiency correction corresponding to each cylinder bank and based on the slope and the volumetric efficiency corrections, calculating target intake camshaft position shifts. The technique further involves controlling offsets of the intake camshafts based on the target intake camshaft position shifts. After a predetermined number of target intake camshaft position shifts are determined and stored with respect to various combinations of engine speed and a ratio of intake manifold pressure to barometric pressure, final intake camshaft position shifts may be determined and utilized when determining the intake camshaft positions.
摘要翻译： 发动机库对空气流平衡技术包括计算发动机的当前和偏移体积效率并计算斜率，其表示（i）偏移和当前体积效率之间的差异，以及（ii）偏置和当前进气凸轮轴位置之间的差异 。 基于相应的废气氧浓度，该技术涉及计算对应于每个气缸组的体积效率校正，并且基于斜率和体积效率校正，计算目标进气凸轮轴位置偏移。 该技术还涉及基于目标进气凸轮轴位置偏移来控制进气凸轮轴的偏移。 在相对于发动机转速和进气歧管压力与大气压力的比例的各种组合来确定和存储预定数量的目标进气凸轮轴位置偏移之后，可以在确定进气凸轮轴位置时确定和利用最终进气凸轮轴位置偏移。
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8.发明申请公开(公告)号：US20130174805A1
公开(公告)日：2013-07-11
申请号：US13344855
申请日：2012-01-06
申请人： Ethan E. Bayer , Sai S.V. Rajagopalan , Orgun A. Guralp , Hanho Yun , Jun-Mo Kang , Paul M. Najt
发明人： Ethan E. Bayer , Sai S.V. Rajagopalan , Orgun A. Guralp , Hanho Yun , Jun-Mo Kang , Paul M. Najt
IPC分类号： F02B17/00
CPC分类号： F02D41/3064 , F02B11/02 , F02D41/3035 , Y02T10/128
摘要： A system for a vehicle includes a mode control module and a valve control module. The mode control module selectively sets an ignition mode for an engine to one of a spark ignition (SI) mode and a homogenous charge compression ignition (HCCI) mode. In response to the ignition mode transitioning from the SI mode to the HCCI mode during a first engine cycle, the valve control module operates an exhaust valve in a high lift mode during a second engine cycle, operates an intake valve in a low lift mode during the second engine cycle, and operates the exhaust and intake valves in the low lift mode during a third engine cycle. The first engine cycle is before the second engine cycle, and the second engine cycle is before the third engine cycle.
摘要翻译： 一种用于车辆的系统包括模式控制模块和阀门控制模块。 模式控制模块选择性地将发动机的点火模式设置为火花点火（SI）模式和均匀充电压缩点火（HCCI）模式之一。 响应于点火模式在第一发动机循环期间从SI模式转换到HCCI模式，阀控制模块在第二发动机循环期间以高提升模式操作排气阀，在低升力模式期间操作进气阀 第二发动机循环，并且在第三发动机循环期间以低提升模式操作排气和进气门。 第一个发动机循环是在第二个发动机循环之前，第二个发动机循环是在第三次发动机循环之前。
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公开(公告)号：US20200158032A1
公开(公告)日：2020-05-21
申请号：US16681354
申请日：2019-11-12
申请人： David Lawrence , Ethan E. Bayer , William P. Attard , Shu Wang
发明人： David Lawrence , Ethan E. Bayer , William P. Attard , Shu Wang
摘要： Techniques for controlling a forced-induction engine having a low pressure cooled exhaust gas recirculation (LPCEGR) system comprise determining a target boost device inlet pressure for each of one or more systems that could require a boost device inlet pressure change as part of their operation and boost device inlet pressure hardware limits for a set of components in the induction system, determining a final target boost device inlet pressure based on the determined sets of target boost device inlet pressures and boost device inlet pressure hardware limits, and controlling a differential pressure (dP) valve based on the final target boost device inlet pressure to balance (i) competing boost device inlet pressure targets of the one or more systems and (ii) the set of boost device inlet pressure hardware limits in order to optimize engine performance and prevent component damage.
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10.发明授权Spark ignition to homogenous charge compression ignition transition control systems and methods 有权火花点火到均质充电压缩点火过渡控制系统和方法公开(公告)号：US08776737B2
公开(公告)日：2014-07-15
申请号：US13344855
申请日：2012-01-06
申请人： Ethan E. Bayer , Sai S. V. Rajagopalan , Orgun A. Guralp , Hanho Kang , Jun-Mo Kang , Paul M. Najt
发明人： Ethan E. Bayer , Sai S. V. Rajagopalan , Orgun A. Guralp , Hanho Kang , Jun-Mo Kang , Paul M. Najt
IPC分类号： F02D13/00
CPC分类号： F02D41/3064 , F02B11/02 , F02D41/3035 , Y02T10/128
摘要： A system for a vehicle includes a mode control module and a valve control module. The mode control module selectively sets an ignition mode for an engine to one of a spark ignition (SI) mode and a homogenous charge compression ignition (HCCI) mode. In response to the ignition mode transitioning from the SI mode to the HCCI mode during a first engine cycle, the valve control module operates an exhaust valve in a high lift mode during a second engine cycle, operates an intake valve in a low lift mode during the second engine cycle, and operates the exhaust and intake valves in the low lift mode during a third engine cycle. The first engine cycle is before the second engine cycle, and the second engine cycle is before the third engine cycle.
摘要翻译： 一种用于车辆的系统包括模式控制模块和阀门控制模块。 模式控制模块选择性地将发动机的点火模式设置为火花点火（SI）模式和均匀充电压缩点火（HCCI）模式之一。 响应于点火模式在第一发动机循环期间从SI模式转换到HCCI模式，阀控制模块在第二发动机循环期间以高提升模式操作排气阀，在低升力模式期间操作进气阀 第二发动机循环，并且在第三发动机循环期间以低提升模式操作排气和进气门。 第一个发动机循环是在第二个发动机循环之前，第二个发动机循环是在第三次发动机循环之前。
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