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41. 发明授权

US10161328B2 Managing skip fire phase transitions 有权
公开(公告)号：US10161328B2
公开(公告)日：2018-12-25
申请号：US15299259
申请日：2016-10-20
申请人： Tula Technology, Inc.
发明人： Louis J. Serrano
IPC分类号： F02D41/00 , F02D17/02 , F02D17/00 , F02D41/30
摘要： Methods and controllers for dynamically altering the phase of a firing sequence during operation of an engine are described. The described methods and controllers are particularly useful in conjunction with dynamic skip fire operation of the engine.

42. 发明授权

US09790867B2 Deceleration cylinder cut-off 有权
公开(公告)号：US09790867B2
公开(公告)日：2017-10-17
申请号：US15009533
申请日：2016-01-28
申请人： Tula Technology, Inc.
发明人： Steven E. Carlson , Xin Yuan , Siamak Hashemi , Vijay Srinivasan , Srihari Kalluri , Andrew W. Phillips , Mark A. Wilcutts , Louis J. Serrano , Shikui Kevin Chen
IPC分类号： F02D41/32 , F02D17/02 , F01N11/00 , F02M35/10 , F02D41/00 , F02M25/08 , F02D41/12 , F02D29/02 , F02D9/02
CPC分类号： F02D17/02 , F01N11/007 , F02D29/02 , F02D41/003 , F02D41/0087 , F02D41/126 , F02D2009/024 , F02D2041/0012 , F02D2200/0406 , F02D2250/08 , F02D2250/41 , F02M25/089 , F02M35/10222 , F02M35/10229
摘要： Methods and arrangements for transitioning an engine between a deceleration cylinder cutoff (DCCO) state and an operational state are described. In one aspect, transitions from DCCO begin with reactivating cylinders to pump air to reduce the pressure in the intake manifold prior to firing any cylinders. In another aspect, transitions from DCCO, involve the use of an air pumping skip fire operational mode. After the manifold pressure has been reduced, the engine may transition to either a cylinder deactivation skip fire operational mode or other appropriate operational mode. In yet another aspect a method of transitioning into DCCO using a skip fire approach is described. In this aspect, the fraction of the working cycles that are fired is gradually reduced to a threshold firing fraction. All of the working chambers are then deactivated after reaching the threshold firing fraction.

43. 发明授权

US09739212B1 Method and apparatus for determining optimum skip fire firing profile with adjustments for ambient temperature 有权
公开(公告)号：US09739212B1
公开(公告)日：2017-08-22
申请号：US15148826
申请日：2016-05-06
申请人： Tula Technology, Inc.
发明人： Vijay Srinivasan , Louis J. Serrano
IPC分类号： F02D13/06 , F02D17/02 , F02D35/00
CPC分类号： F02D41/0087 , F02D41/021 , F02D41/0225 , F02D2200/021 , F02D2200/501 , F02D2200/702 , F02D2250/18
摘要： In one aspect, a skip fire engine controller is described. The skip fire engine controller includes a skip fire module arranged to determine an operational firing fraction and associated cylinder load for delivering a desired engine output. The skip fire engine controller also includes a firing controller arranged to direct firings in a skip fire manner that delivers the selected operational firing fraction. Various methods, modules, lookup tables and arrangements related to the selection of a suitable operational firing fraction are also described.

44. 发明授权

US09399964B2 Multi-level skip fire 有权
公开(公告)号：US09399964B2
公开(公告)日：2016-07-26
申请号：US14919011
申请日：2015-10-21
申请人： Tula Technology, Inc.
发明人： Matthew A. Younkins , Louis J. Serrano
IPC分类号： F02D41/00 , F02D13/06 , F02D41/04 , F02D13/02
CPC分类号： F02D41/0087 , F01L1/047 , F02D11/02 , F02D13/0223 , F02D13/0273 , F02D13/06 , F02D17/02 , F02D41/0002 , F02D41/008 , F02D41/04 , F02D41/107 , F02D41/123 , F02D41/26 , F02D2041/001 , F02D2041/0012 , F02D2250/18 , F02P5/145 , F02P5/1502 , Y02T10/142 , Y02T10/42
摘要： In one aspect, a method for controlling operation of an internal combustion engine is described. The engine is operated in a skip fire manner such that selected skipped working cycles are skipped and selected active working cycles are fired to deliver a desired engine output. A particular level of torque output is selected for each of the fired working chambers. Various methods, arrangements and systems related to the above method are also described.

45. 发明授权

US09273643B2 Control of manifold vacuum in skip fire operation 有权
标题翻译：在跳火操作中控制歧管真空
公开(公告)号：US09273643B2
公开(公告)日：2016-03-01
申请号：US13961701
申请日：2013-08-07
申请人： Tula Technology, Inc.
发明人： Steven E. Carlson , Xin Yuan , Joshua P. Switkes , Louis J. Serrano
IPC分类号： F02M25/08 , F02M35/10 , F02D41/00 , F02D17/02 , F02D29/02 , F02D9/02
CPC分类号： F02M25/08 , F02D17/02 , F02D29/02 , F02D41/003 , F02D41/0087 , F02D2009/024 , F02D2250/08 , F02D2250/41 , F02M25/089 , F02M35/10222 , F02M35/10229
摘要： A variety of methods and arrangements are described for selectively reducing intake manifold pressure in a skip fire engine control system. In some embodiments, a throttle is adjusted to generate a manifold vacuum, which is used for various applications, including but not limited to purging a fuel vapor canister, reducing pressure within a brake vacuum booster reservoir and/or venting gas from a crankcase interior. An engine firing fraction is increased to help maintain a desired torque level. Other techniques for reducing the intake manifold pressure are also described, such as applications involving a return to idle.
摘要翻译：描述了各种方法和布置，用于选择性地减少跳火消防车控制系统中的进气歧管压力。在一些实施例中，调节节气门以产生歧管真空，其用于各种应用，包括但不限于清除燃料蒸汽罐，降低制动真空助力器容器内的压力和/或从曲轴箱内部排出气体。发动机点火分数增加以帮助保持期望的转矩水平。还描述了用于降低进气歧管压力的其它技术，例如涉及返回空转的应用。

46. 发明授权

US08880258B2 Hybrid powertrain control 有权
标题翻译：混合动力总成控制
公开(公告)号：US08880258B2
公开(公告)日：2014-11-04
申请号：US13681378
申请日：2012-11-19
申请人： Tula Technology, Inc.
发明人： Leo G. Breton , Ronald D. Yuille , Mark A. Shost , Louis J. Serrano , John W. Parsels , Matthew A. Younkins
IPC分类号： B60L11/00 , B60W20/00 , B60W10/06 , B60W10/08 , B60K6/485 , B60K6/28
CPC分类号： B60W20/10 , B60K6/28 , B60K6/485 , B60W10/06 , B60W10/08 , B60Y2300/435 , B60Y2400/114 , Y02T10/6226 , Y02T10/6286 , Y10S903/93
摘要： Methods and arrangements for controlling hybrid powertrains are described. In one aspect, an engine is alternatingly operated at different effective displacements. One displacement delivers less than a requested powertrain output and the other delivers more. A motor/generator system is used to add and subtract torque to/from the powertrain to cause the net delivery of the requested powertrain output. In some embodiments, energy added and subtracted from the powertrain is primarily drawn from and stored in a capacitor (e.g., a supercapacitor or an ultracapacitor) when alternating between effective displacements. In another aspect a hybrid powertrain arrangement includes an engine a motor/generator and an energy storage system that includes both a battery and a capacitor. The capacitor stores and delivers electrical energy to the motor/generator unit during operation of the engine in a variable displacement or skip fire mode.
摘要翻译：描述了控制混合动力系的方法和布置。在一个方面，发动机以不同的有效位移交替地操作。一个位移传递小于所请求的动力总成输出，另一个输送更多。电动机/发电机系统用于向/从动力系增加和减少扭矩，以使得所需动力系统输出的净运送。在一些实施例中，当在有效位移之间交替时，从动力系中加入和减去的能量主要从电容器（例如超级电容器或超级电容器）中抽出并存储。在另一方面，一种混合式动力总成装置包括发动机，电动机/发电机和包括电池和电容器的能量存储系统。电容器在发动机运行中以可变排量或跳火模式存储并向电动机/发电机单元传送电能。

47. 发明授权

US07518960B2 Method and apparatus for positioning beam spot on recording medium 有权
标题翻译：将光斑定位在记录介质上的方法和装置
公开(公告)号：US07518960B2
公开(公告)日：2009-04-14
申请号：US11312214
申请日：2005-12-13
申请人： Louis J. Serrano , Xiao Lin
发明人： Louis J. Serrano , Xiao Lin
IPC分类号： G11B7/00 , G11B5/596
CPC分类号： G11B7/08517 , G11B7/0901 , G11B7/0953
摘要： A method and apparatus position a beam spot on a recording medium. The positioning includes (a) observing a first center error in a first closed loop control during tracking mode, the first center error including a repeatable run out (RRO) error, (b) estimating a center error (CE)-RRO from the first center error, the CE-RRO being part of the first center error caused by the RRO, (c) observing a second center error in a second closed loop control during a rough seek, (d) subtracting the CE-RRO from the second center error, (e) controlling the beam spot based on the second center error less the CE-RRO during the rough seek, and (f) adding an open loop control to the second closed loop control during the rough seek, the added open loop control inducing a motion of the lens relative to an optical center of the OPU during the rough seek.
摘要翻译：一种方法和装置将束斑定位在记录介质上。所述定位包括：（a）在跟踪模式期间观察第一闭环控制中的第一中心误差，所述第一中心误差包括可重复耗尽（RRO）误差，（b）从所述第一中心误差估计中心误差中心误差，CE-RRO是由RRO引起的第一个中心误差的一部分，（c）在粗略寻找期间观察第二闭环控制中的第二个中心误差，（d）从第二个中心减去CE-RRO （e）在粗略寻找期间，基于第二中心误差减去CE-RRO，控制光点，以及（f）在粗搜寻期间向第二闭环控制添加开环控制，所添加的开环控制在粗略寻找期间引起透镜相对于OPU的光学中心的运动。

48. 发明授权

US5617536A Method and apparatus for servo control with error detection of gray (pennington) code used for servo track ID 失效
标题翻译：用于伺服控制的方法和装置，具有用于伺服轨迹ID的灰色（pennington）码的错误检测
公开(公告)号：US5617536A
公开(公告)日：1997-04-01
申请号：US396810
申请日：1995-03-02
申请人： David A. Freitas , Louis J. Serrano , Mantle Man-Hon Yu
发明人： David A. Freitas , Louis J. Serrano , Mantle Man-Hon Yu
IPC分类号： G11B21/10 , G11B27/30 , G06F11/00
CPC分类号： G11B21/106 , G11B27/3027
摘要： Logic for detecting the reliability of an address in Pennington code (PCODE). The address is parsed into two separate halves. The first half corresponds to the front portion of the PCODE address and the second half corresponds to the back portion of the same. The two halves are compared to determine the reliability of the address. If the address is not reliable, a head position estimation is used to position the head over the described track. If the address is reliable, the PCODE is combined with a position error signal to position the head.
摘要翻译：用于检测Pennington代码（PCODE）中地址可靠性的逻辑。地址被分解成两个分开的两半。前半部分对应于PCODE地址的前部，第二个对应于其后部。比较两半以确定地址的可靠性。如果地址不可靠，则使用头位置估计来将头部定位在所描述的轨道上。如果地址可靠，则PCODE与位置误差信号相结合来定位头。

49. 发明授权

US11549455B2 Skip cylinder compression braking 有权
公开(公告)号：US11549455B2
公开(公告)日：2023-01-10
申请号：US16839651
申请日：2020-04-03
申请人： Tula Technology, Inc. , Cummins Inc.
发明人： Steven E. Carlson , Louis J. Serrano , Mark A. Wilcutts , Vijay Srinivasan
IPC分类号： F02D41/00 , F02D17/02 , F02D41/24
摘要： An internal combustion engine operates so that it delivers zero or negative torque. The engine operates in either a deceleration cylinder cut off (DCCO) mode or skip cylinder compression braking mode. In the skip cylinder compression braking mode, selected working cycles of selected working chambers are operated in a compression release braking mode. Accordingly, individual working chambers are sometimes not fired and sometimes operated in the compression release braking mode while the engine is operating in the skip cylinder compression braking mode.

50. 发明授权

US11459965B2 Exhaust gas recirculation flow control for reducing emissions with variable displacement internal combustion engines 有权
公开(公告)号：US11459965B2
公开(公告)日：2022-10-04
申请号：US17186979
申请日：2021-02-26
申请人： Tula Technology, Inc. , Cummins Inc.
发明人： Vijay Srinivasan , Louis J. Serrano , Xiaoping Cai , J. Steven Kolhouse , Avra Brahma , Adrian P. Dale
IPC分类号： F02D41/00 , F02M26/05 , F02M26/23 , F02M37/02 , F02M26/43 , F02D37/02
摘要： Managing firing fraction transitions of a variable displacement internal combustion engines by (a) avoiding transport delays in an Exhaust Gas Recirculation (EGR) feed by starting movement of an EGR valve position after a decision to transition to a new firing fraction has been made, but prior to the start of the transition and (b) adjusting the EGR valve as needed during the transition so as to maintain an EGR fraction within a predetermined range during the transition. By performing both (a) and (b), spikes of nitrous oxide (NOx) and/or hydrocarbon emissions are reduced or altogether eliminated during the transition.

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