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公开(公告)号：US10138802B2
公开(公告)日：2018-11-27
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
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.
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公开(公告)号：US09541018B2
公开(公告)日：2017-01-10
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。 该技术还包括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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公开(公告)号：US09879626B1
公开(公告)日：2018-01-30
申请号：US15264724
申请日：2016-09-14
CPC分类号： F02D41/0077 , F02D41/0072 , F02D41/1444 , F02D2041/1472 , F02D2200/0414 , F02D2200/0418 , F02M35/10157 , F02M35/10222 , F02M35/1038
摘要： A system and method for controlling condensation formation in an engine having EGR and forced induction includes a controller for determining a water vapor mass fraction of an exhaust stream based on a water vapor mass fraction of an intake stream and water vapor from combustion. An estimated condensation temperature (CT) is determined for a current EGR level based on the water vapor mass fractions and is compared to an intake stream temperature upstream of the compressor inlet. The controller commands the current EGR level as a maximum EGR level upon determining the intake stream temperature is less than the CT, and an increase in the current EGR level upon determining the intake stream temperature is greater than the CT. An air charge temperature (ACT) of the forced induction system may be controlled based on utilizing a target ACT as the CT to be controlled by a coolant pump.
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公开(公告)号：US09664154B2
公开(公告)日：2017-05-30
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.
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公开(公告)号：US09784195B2
公开(公告)日：2017-10-10
申请号：US14834719
申请日：2015-08-25
申请人： Ayman M Ismail , Ethan E Bayer , John R Bucknell
发明人： Ayman M Ismail , Ethan E Bayer , John R Bucknell
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.
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公开(公告)号：US09765705B2
公开(公告)日：2017-09-19
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：US10823098B1
公开(公告)日：2020-11-03
申请号：US16387677
申请日：2019-04-18
摘要： A low speed pre-ignition detection, mitigation, and driver notification system and method utilize a controller to analyze a knock signal from a knock sensor to detect LSPI knock of the engine and in response to detecting the LSPI knock, enrich a fuel/air ratio of the engine and limit a torque output of the engine to a level that is less than a maximum torque output of the engine, and when enriching the fuel/air ratio of the engine and limiting the torque output of the engine does not mitigate the LSPI knock, output at least one message for a driver of the vehicle instructing the driver to take remedial action to mitigate the LSPI knock.
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公开(公告)号：US20220381189A1
公开(公告)日：2022-12-01
申请号：US17330627
申请日：2021-05-26
申请人： Amit Shrestha , Fadi Estefanous , Lurun Zhong , Michael Barkey , Benjamin T Dean , Ethan E Bayer
发明人： Amit Shrestha , Fadi Estefanous , Lurun Zhong , Michael Barkey , Benjamin T Dean , Ethan E Bayer
摘要： A stop/start system and method for an engine of a vehicle include a valve control system configured for full lift control of respective intake and exhaust valves of a plurality of cylinders of the engine and a controller of the engine configured to perform an engine stop event including initiating a fuel shutoff (FSO) event whereby fueling to the engine is disabled and the engine fully stops after a stop period and, in response to initiating the FSO event, commanding the valve control system to close each intake valve prior to closing its respective exhaust valve to (i) expel any residual gases from the cylinders during respective exhaust strokes prior to closing the respective exhaust valves, and (ii) prevent air-only intake and compression within the cylinders during the stop period to thereby mitigate or eliminate noise/vibration/harshness (NVH) caused by the air-only intake and compression.
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公开(公告)号：US11286871B1
公开(公告)日：2022-03-29
申请号：US17158459
申请日：2021-01-26
申请人： Shuonan Xu , David A Lawrence , Ethan E Bayer
发明人： Shuonan Xu , David A Lawrence , Ethan E Bayer
摘要： A combustion control method and system for an engine of a vehicle comprises a controller configured to access a trained feedforward artificial neural network configured to model a volumetric efficiency (VE) of the engine based on measured engine speed, engine intake manifold absolute pressure, intake and exhaust camshaft positions, intake air temperature, and engine coolant temperature, generate a base VE of the engine using the trained feedforward artificial neural network and the measured parameters, estimate an air charge mass flowing to each cylinder of the engine based on the base VE of the engine, and control combustion in the cylinders of the engine based on the estimated air charge mass to improve at least one of combustion stability, torque response, and fuel economy.
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公开(公告)号：US20220024445A1
公开(公告)日：2022-01-27
申请号：US16937169
申请日：2020-07-23
申请人： Jeremy J Anker , John O Lagalski , Richard A Myers , Kyle Schumaker , Drushan Mavalankar , Ethan E Bayer , Dustin M Kolodge
发明人： Jeremy J Anker , John O Lagalski , Richard A Myers , Kyle Schumaker , Drushan Mavalankar , Ethan E Bayer , Dustin M Kolodge
摘要： A vehicle jump detection method and system for a vehicle includes an electronic control module (ECM), at least one ride height sensor (RHS) in signal communication with the ECM and configured to measure a vertical wheel travel distance from a predetermined point on the vehicle, at least one accelerometer in signal communication with the ECM and configured to measure a vertical acceleration of the vehicle frame, and a vehicle speed sensor in signal communication with the ECM. The ECM is configured to independently determine, based on one or more signals from the at least one RHS, the at least one accelerometer, and the vehicle speed sensor, if (i) wheels of a front axle are in the air, (ii) wheels of a rear axle are in the air, and (iii) if the wheels of both the front and rear axles are in the air.
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