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公开(公告)号：US09664125B2
公开(公告)日：2017-05-30
申请号：US13961569
申请日：2013-08-07
发明人： Samuel Guido , Ed Badillo , Dev Saberwal , Ross Dykstra Pursifull
CPC分类号： F02D41/0025 , F02D19/081 , F02D41/0027 , F02D2200/0611 , Y02T10/36
摘要： Methods are provided for reducing transient fuel issues in a multi-fuel engine system. When transitioning from co-fueling with a first fuel split ratio to co-fueling with an alternate fuel split ratio, the change in fuel split ratio is gradually ramped in over multiple engine cycles. This reduces combustion stability issues and the disturbance potential of a wholesale fuel change.
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公开(公告)号：US09528472B2
公开(公告)日：2016-12-27
申请号：US13866721
申请日：2013-04-19
发明人： Ross Dykstra Pursifull , Samuel Guido , Ed Badillo , Dev Saberwal
CPC分类号： F02M21/0239 , F02M21/0215 , F02M37/0017 , F02M43/00 , F02M43/04 , F02M69/54 , Y02T10/32
摘要： A method is described for adjusting the amount of gaseous fuel injected based on the sonic choked flow rate through a restriction. Because the sonic choke flow rate continues to decrease as tank pressure decreases, the method includes computing the sonic choke flow rate through the restriction based on system variables and enforcing the rate of CNG injection to be less than the sonic choke flow rate through the restriction. Thereby, the mass flow rate to the fuel injector can be substantially maximized to substantially minimize the time for fuel tank emptying, particularly during the last amount of tank emptying when the contents of the gaseous storage tank is low.
摘要翻译： 描述了一种基于通过限制的声音扼流流量来调节喷射的气体燃料量的方法。 因为声压扼流流量随着罐压降低而持续下降，所以该方法包括基于系统变量计算通过限制的声音扼流流量，并通过限制将CNG注入速率提高到低于声ke流量。 因此，燃料喷射器的质量流量可以基本上最大化，从而基本上最小化燃料箱排空的时间，特别是当气体储罐的内容物低时，在最后的罐排空期间。
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公开(公告)号：US09175615B2
公开(公告)日：2015-11-03
申请号：US13754667
申请日：2013-01-30
发明人： Ed Badillo , Samuel Guido , Ross Dykstra Pursifull , Dev Saberwal
IPC分类号： F02B13/00 , F02D19/08 , F02D41/14 , F02P5/15 , F02D37/02 , F02D41/00 , F02D19/02 , F02D19/06 , F02M25/07
CPC分类号： F02D19/08 , F02D19/024 , F02D19/0647 , F02D19/0689 , F02D19/0692 , F02D19/081 , F02D19/084 , F02D37/02 , F02D41/0025 , F02D41/0027 , F02D41/1446 , F02D2200/0611 , F02M26/23 , F02P5/1502 , Y02T10/32 , Y02T10/36 , Y02T10/46
摘要： Methods and systems are provided for reducing exhaust temperatures during high engine load conditions in engine systems configured to operate with multiple fuels. Stoichiometric cylinder operation is provided via injection of a gaseous fuel such as CNG. In response to elevated exhaust temperatures, the cylinder is enriched by injecting a liquid fuel, such as gasoline, while maintaining the injection of CNG and while maintaining spark timing at MBT.
摘要翻译： 提供的方法和系统用于在被配置为使用多种燃料运行的发动机系统中的高发动机负荷条件期间减少排气温度。 通过注入诸如CNG的气体燃料来提供化学计量气瓶操作。 响应于排气温度升高，气瓶通过注入液体燃料（如汽油）而富集，同时保持CNG的注入并保持在MBT的火花正时。
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公开(公告)号：US10100751B2
公开(公告)日：2018-10-16
申请号：US15239575
申请日：2016-08-17
摘要： Methods and systems are provided for detecting throttle obstructions in a vehicle. In one example, after engine start up, throttle icing condition resulting from the throttle capturing ice fragments originally formed within a charge air cooler or an intake passage upstream of throttle, may be detected. Responsive to detecting the throttle icing condition, the throttle may be adjusted to a fully open position independent of accelerator pedal position, and maintained at the fully open position for a threshold duration while maintaining a desired torque, to release the captured ice fragments from the throttle.
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公开(公告)号：US09714620B2
公开(公告)日：2017-07-25
申请号：US14928965
申请日：2015-10-30
发明人： Peter Douglas Kuechler , Dev Saberwal , Kevan Bates , Trevor Losch , Justin Lesniak , Michael M. S. Simon
CPC分类号： F02D41/0087 , F01N3/2006 , F02D17/02 , F02D23/02 , F02D41/0007 , F02D41/005 , F02D41/123 , F02D2200/0802 , F02M26/05 , Y02T10/144 , Y02T10/47
摘要： Methods and systems are provided for improving boost response in a turbocharged engine. In one example, a method may include in response to a tip-out following a tip-in, when an exhaust catalyst temperature is within a threshold range, deactivating fuel injectors to the engine and increasing air flow to an exhaust turbine based on a desired increase in a turbine speed to maintain the turbine speed at or above a threshold speed.
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公开(公告)号：US20170122234A1
公开(公告)日：2017-05-04
申请号：US14928965
申请日：2015-10-30
发明人： Peter Douglas Kuechler , Dev Saberwal , Kevan Bates , Trevor Losch , Justin Lesniak , Michael M.S. Simon
CPC分类号： F02D41/0087 , F01N3/2006 , F02D17/02 , F02D23/02 , F02D41/0007 , F02D41/005 , F02D41/123 , F02D2200/0802 , F02M26/05 , Y02T10/144 , Y02T10/47
摘要： Methods and systems are provided for improving boost response in a turbocharged engine. In one example, a method may include in response to a tip-out following a tip-in, when an exhaust catalyst temperature is within a threshold range, deactivating fuel injectors to the engine and increasing air flow to an exhaust turbine based on a desired increase in a turbine speed to maintain the turbine speed at or above a threshold speed.
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公开(公告)号：US11958363B2
公开(公告)日：2024-04-16
申请号：US16952731
申请日：2020-11-19
发明人： Dev Saberwal , Christopher Golecki
CPC分类号： B60L15/20 , B60K1/02 , G05D13/62 , H02P5/74 , B60L2240/421
摘要： A vehicle includes first and second electric machines constrained to rotate in unison and configured to power a common axle. A controller is programmed to, in response to activation of the vehicle, select one of the first and second speed sensors as a representative speed sensor, and, in response to the electric machines being in speed control, command speeds to the first and second electric machines based on a difference between a target speed of the electric machines and a measured speed of the representative speed sensor.
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公开(公告)号：US20150046065A1
公开(公告)日：2015-02-12
申请号：US13961569
申请日：2013-08-07
发明人： Samuel Guido , Ed Badillo , Dev Saberwal , Ross Dykstra Pursifull
IPC分类号： F02D41/00
CPC分类号： F02D41/0025 , F02D19/081 , F02D41/0027 , F02D2200/0611 , Y02T10/36
摘要： Methods are provided for reducing transient fuel issues in a multi-fuel engine system. When transitioning from co-fueling with a first fuel split ratio to co-fueling with an alternate fuel split ratio, the change in fuel split ratio is gradually ramped in over multiple engine cycles. This reduces combustion stability issues and the disturbance potential of a wholesale fuel change.
摘要翻译： 提供了用于减少多燃料发动机系统中的瞬态燃料问题的方法。 当从第一燃料分流比的共同燃料转换到与备用燃料分流比共同加油时，燃料分配比的变化在多个发动机循环中逐渐斜升。 这样可以减少燃料稳定性问题和批发燃料变化的干扰潜力。
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公开(公告)号：US20140311454A1
公开(公告)日：2014-10-23
申请号：US13866721
申请日：2013-04-19
发明人： Ross Dykstra Pursifull , Samuel Guido , Ed Badillo , Dev Saberwal
CPC分类号： F02M21/0239 , F02M21/0215 , F02M37/0017 , F02M43/00 , F02M43/04 , F02M69/54 , Y02T10/32
摘要： A method is described for adjusting the amount of gaseous fuel injected based on the sonic choked flow rate through a restriction. Because the sonic choke flow rate continues to decrease as tank pressure decreases, the method includes computing the sonic choke flow rate through the restriction based on system variables and enforcing the rate of CNG injection to be less than the sonic choke flow rate through the restriction. Thereby, the mass flow rate to the fuel injector can be substantially maximized to substantially minimize the time for fuel tank emptying, particularly during the last amount of tank emptying when the contents of the gaseous storage tank is low.
摘要翻译： 描述了一种基于通过限制的声音扼流流量来调节喷射的气体燃料量的方法。 因为声压扼流流量随着罐压降低而持续下降，所以该方法包括基于系统变量计算通过限制的声音扼流流量，并通过限制将CNG注入速率提高到低于声ke流量。 因此，燃料喷射器的质量流量可以基本上最大化，从而基本上最小化燃料箱排空的时间，特别是当气体储罐的内容物低时，在最后的罐排空期间。
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公开(公告)号：US20220063418A1
公开(公告)日：2022-03-03
申请号：US16952731
申请日：2020-11-19
发明人： Dev Saberwal , Christopher Golecki
摘要： A vehicle includes first and second electric machines constrained to rotate in unison and configured to power a common axle. A controller is programmed to, in response to activation of the vehicle, select one of the first and second speed sensors as a representative speed sensor, and, in reponse to the electric machines being in speed control, command speeds to the first and second electric machines based on a difference between a target speed of the electric machines and a measured speed of the representative speed sensor.
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