公开(公告)号：US20180156692A1

公开(公告)日：2018-06-07

申请号：US15872675

申请日：2018-01-16

Applicant: Tula Technology, Inc.

Inventor： Shikui Kevin CHEN ,  Allan J. KOTWICKI ,  Joel D. VAN ESS ,  Robert S. BAILEY ,  Mohammad R. PIRJABERI

IPC: G01M15/05 ,  F02M35/10 ,  G01M15/09

CPC classification number: G01M15/05 ,  F02M35/1038 ,  G01M15/09

Abstract: A variety of methods, diagnostic modules and other arrangements for detecting air induction faults during operation of an internal combustion engine are described. In some embodiments, the intake manifold pressure is monitored with the intake pressure being read for each induction opportunity. Induction faults may be detected based at least in part on a comparison of the manifold pressure readings for sequential induction opportunities. In some embodiments, an induction fault is identified when the difference between the manifold pressure associated with an induction opportunity and the immediately preceding induction opportunity exceeds an induction fault threshold.

公开(公告)号：US20170370310A1

公开(公告)日：2017-12-28

申请号：US15628309

申请日：2017-06-20

Applicant: Tula Technology, Inc.

Inventor： Allan J. KOTWICKI ,  Joel D. VAN ESS ,  Mark A. WILCUTTS

IPC: F02D41/00 ,  F02D17/02 ,  F02D41/14 ,  F02P5/15

CPC classification number: F02D41/0087 ,  F02D13/06 ,  F02D17/02 ,  F02D41/1401 ,  F02D41/1402 ,  F02D41/182 ,  F02D2041/1436 ,  F02D2200/0402 ,  F02D2200/0408 ,  F02P5/1512 ,  Y02T10/18

Abstract: Methods, devices, estimators, controllers and algorithms are described for estimating working chamber air charge during engine operations. The described approaches and devices are well suited for use in dynamic firing level modulation controlled engines. Manifold pressure is estimated for a time corresponding to an induction event associated with a selected working cycle. The manifold pressure estimate accounts for impacts from one or more intervening potential induction events that will occur between the time that the manifold pressure is estimated and the time that the induction event associated with the selected working cycle occurs. The estimated manifold pressure is used in the estimation of the air charge for the selected working cycle. The described approach may be used to individually calculate the air charge for each induction event at any time that the engine is operating in a mode that can benefit from the individual cylinder air charge estimations.

公开(公告)号：US20170299466A1

公开(公告)日：2017-10-19

申请号：US15641097

申请日：2017-07-03

Applicant: Tula Technology, Inc.

Inventor： Shikui Kevin CHEN ,  Allan J. KOTWICKI ,  Joel D. VAN ESS ,  Robert S. BAILEY ,  Mohammad R. PIRJABERI

IPC: G01M15/05 ,  G01M15/09 ,  F02M35/10

CPC classification number: G01M15/05 ,  F02M35/1038 ,  G01M15/09

Abstract: A variety of methods and arrangements for detecting failure of the commanded air induction in an internal combustion engine are described. In some embodiments, the intake manifold pressure is monitored. An air induction event generates a fluctuation in the intake manifold pressure, which is recorded. The signal is processed through a diagnostic filter to help determine whether the actual induction matched the commanded induction. In other embodiments, measured crankshaft acceleration is compared with estimated crankshaft acceleration. If the two quantities differ by a threshold amount an induction fault is detected. The two detection methods may also be combined. The describe approaches are particularly well suited for use in engines operating in a skip fire mode with cylinder deactivation and/or a dynamic firing level modulation mode.

公开(公告)号：US20160116371A1

公开(公告)日：2016-04-28

申请号：US14919385

申请日：2015-10-21

Applicant: Tula Technology Inc.

Inventor： Shikui Kevin CHEN ,  Allan J. KOTWICKI ,  Joel D. VAN ESS ,  Robert S. BAILEY ,  Mohammad R. PIRJABERI

IPC: G01M15/05 ,  G01M15/09 ,  F02M35/10

CPC classification number: G01M15/05 ,  F02M35/1038 ,  G01M15/09

Abstract: A variety of methods and arrangements for detecting failure of the commanded air induction in an internal combustion engine are described. In some embodiments, the intake manifold pressure is monitored. An air induction event generates a fluctuation in the intake manifold pressure, which is recorded. The signal is processed through a diagnostic filter to help determine whether the actual induction matched the commanded induction. In other embodiments, measured crankshaft acceleration is compared with estimated crankshaft acceleration. If the two quantities differ by a threshold amount an induction fault is detected. The two detection methods may also be combined. The describe approaches are particularly well suited for use in engines operating in a skip fire mode with cylinder deactivation and/or a dynamic firing level modulation mode.

Abstract translation: 描述了用于检测内燃机中指令的空气感应故障的各种方法和装置。 在一些实施例中，监测进气歧管压力。 空气感应事件产生记录的进气歧管压力的波动。 信号通过诊断滤波器进行处理，以帮助确定实际感应是否与命令感应相匹配。 在其他实施例中，将测量的曲轴加速度与估计的曲轴加速度进行比较。 如果两个量值相差阈值，则检测到感应故障。 两种检测方法也可以组合。 所描述的方法特别适合于在具有气缸停用和/或动态点火级调制模式的跳火模式下运行的发动机中使用。

公开(公告)号：US20140251282A1

公开(公告)日：2014-09-11

申请号：US13794157

申请日：2013-03-11

Applicant: TULA TECHNOLOGY, INC.

Inventor： Allan J. KOTWICKI ,  Joel D. VAN ESS

IPC: F02D41/00

CPC classification number: F02D41/18 ,  F02D35/028 ,  F02D2200/0402 ,  F02D2200/0408

Abstract: In one aspect, an engine controller for an engine including multiple working chambers is described. The engine controller includes a mass air charge determining unit that estimates a mass air charge or amount of air to be delivered to a working chamber. Firing decisions made for a firing window of one or more firing opportunities are used to help determine the mass air charge. The engine controller also includes a firing controller, which is arranged to direct firings to deliver a desired output. Fuel is delivered to a working chamber based on the estimated mass air charge.

Abstract translation: 在一个方面，描述了一种用于包括多个工作室的发动机的发动机控制器。 发动机控制器包括质量空气充量确定单元，其估计要输送到工作室的空气质量或空气量。 用于对一个或多个发射机会的发射窗口进行的射击决定用于帮助确定大量空中燃料。 发动机控制器还包括点火控制器，其被布置成引导发射以输送期望的输出。 燃料根据估计的空气质量被运送到工作室。