公开(公告)号：US20170130630A1

公开(公告)日：2017-05-11

申请号：US15347562

申请日：2016-11-09

Applicant: Tula Technology, Inc.

Inventor： Matthew A. YOUNKINS ,  Shikui Kevin CHEN ,  Mark A. WILCUTTS

IPC: F01N3/20

CPC classification number: F01N3/2033 ,  F01N3/021 ,  F01N3/0814 ,  F01N3/2066 ,  F01N11/005 ,  F01N13/009 ,  F01N2430/08 ,  F01N2900/08 ,  F01N2900/1404 ,  F01N2900/1602 ,  F02D41/0087 ,  F02D41/401 ,  F02D2041/0012 ,  F02D2200/0802 ,  F02D2200/0804 ,  Y02T10/24 ,  Y02T10/44 ,  Y02T10/47

Abstract: A variety of methods and arrangements for controlling the exhaust gas temperature of a lean burn, skip fire controlled internal combustion engine are described. In one aspect, an engine controller includes an aftertreatment system monitor and a firing timing determination unit. The aftertreatment monitor obtains data relating to a temperature of one or more aftertreatment elements, such as a catalytic converter. Based at least partly on this data, the firing timing determination unit generates a firing sequence for operating the engine in a skip fire manner such that the temperature of the aftertreatment element is controlled within its effective operating range.

公开(公告)号：US20170051689A1

公开(公告)日：2017-02-23

申请号：US15340291

申请日：2016-11-01

Applicant: Tula Technology, Inc.

Inventor： Louis J. SERRANO ,  Xin YUAN ,  John W. PARSELS ,  Mohammad R. PIRJABERI ,  Mark A. WILCUTTS ,  Masaki NAGASHIMA

IPC: F02D41/00 ,  F02D41/30 ,  F02D41/14

CPC classification number: F02D41/0087 ,  F02D41/0002 ,  F02D41/1498 ,  F02D41/3058 ,  F02D41/307 ,  F02D2041/0012

Abstract: A variety of methods and arrangements for reducing noise, vibration and harshness (NVH) in a skip fire engine control system are described. In one aspect, a firing sequence is used to operate the engine in a skip fire manner A smoothing torque is determined that is applied to a powertrain by an energy storage/release device. The smoothing torque is arranged to at least partially cancel out variation in torque generated by the skip fire firing sequence. Various methods, powertrain controllers, arrangements and computer software related to the above operations are also described.

Abstract translation: 描述了用于减少跳火消防车控制系统中的噪声，振动和粗糙度（NVH）的各种方法和装置。 在一个方面，使用点火顺序来以跳火方式操作发动机。确定由能量存储/释放装置施加到动力系的平滑转矩。 平滑扭矩被布置成至少部分抵消由跳过火焰点火序列产生的扭矩的变化。 还描述了与上述操作相关的各种方法，动力系统控制器，布置和计算机软件。

公开(公告)号：US20140278007A1

公开(公告)日：2014-09-18

申请号：US13843567

申请日：2013-03-15

Applicant: TULA TECHNOLOGY, INC.

Inventor： Mark A. WILCUTTS ,  Xin YUAN ,  Joshua P. SWITKES ,  Li-Chun CHIEN ,  Steven E. CARLSON ,  Christopher W. CHANDLER ,  Christopher C. Hand ,  Matthew A. YOUNKINS

IPC: F02D41/00

CPC classification number: F02D41/0087 ,  F02D41/3058 ,  F02D2200/0614

Abstract: Various methods and arrangements for determining a combustion control parameter for a working chamber in an engine are described. In one aspect, an engine controller includes a firing counter that stores a firing history for the working chamber. A combustion control module is used to determine a combustion control parameter, which is used to help manage combustion in the working chamber. The combustion control parameter is determined based at least in part on the firing history.

Abstract translation: 描述了用于确定发动机中的工作室的燃烧控制参数的各种方法和装置。 一方面，发动机控制器包括存储工作室的点火历史的点火计数器。 燃烧控制模块用于确定燃烧控制参数，其用于帮助管理工作室中的燃烧。 至少部分地基于击发历史来确定燃烧控制参数。

公开(公告)号：US20130298870A1

公开(公告)日：2013-11-14

申请号：US13945289

申请日：2013-07-18

Applicant: Tula Technology, Inc.

Inventor： Adya S. TRIPATHI ,  Chester J. SILVESTRI ,  Christopher W. CHANDLER ,  Christopher C. HAND ,  Joshua P. SWITKES ,  Mark A. WILCUTTS

IPC: F02D17/02

CPC classification number: F02D17/02 ,  F02D41/0087 ,  F02D41/047

Abstract: A variety of methods and arrangements for controlling the operation of an internal combustion engine in a skip fire variable displacement mode are described. Generally, an engine is controlled to operate in a skip fire variable displacement mode. In one aspect, the spark timing associated with each fired working cycle is based at least in part on the firing history of the fired working chamber.

Abstract translation: 描述了用于在跳火可变位移模式中控制内燃机的操作的各种方法和装置。 通常，发动机被控制为以跳火可变排量模式操作。 在一个方面，与每个燃烧的工作循环相关联的火花正时至少部分地基于燃烧的工作室的击发历史。