公开(公告)号：US20180030907A1

公开(公告)日：2018-02-01

申请号：US15225464

申请日：2016-08-01

Applicant: Caterpillar Inc.

Inventor： Deepti Bhosekar ,  Venkat Vijay Kishore Turlapati ,  Brett A. Zook ,  Andrew J. Loetz

IPC: F02D19/02 ,  F02D23/00 ,  F02B43/12 ,  F02M21/02 ,  F02B43/10 ,  F02B43/04

Abstract: A reformer system may include a reformer device having a fuel inlet, an air inlet and a gas outlet, a first valve set coupled to the fuel inlet and configured to selectively supply a reformer fuel flow from an engine fuel flow to the fuel inlet, a second valve set coupled to the air inlet and configured to selectively supply a reformer air flow from a compressor outlet air flow to the air inlet, and a controller in electrical communication with the first valve set and the second valve set. The controller may determine a target reformer fuel flow based on a target gas flow, determine a target reformer air flow based on the reformer fuel flow and a target air-to-fuel ratio, adjust the reformer fuel flow according to the target reformer fuel flow, and adjust the reformer air flow according to the target reformer air flow.

公开(公告)号：US10815912B2

公开(公告)日：2020-10-27

申请号：US15225464

申请日：2016-08-01

Applicant: Caterpillar Inc.

Inventor： Deepti Bhosekar ,  Venkat Vijay Kishore Turlapati ,  Brett A. Zook ,  Andrew J. Loetz

IPC: F02D19/02 ,  F02B43/04 ,  F02B43/12 ,  F02M21/02 ,  F02D23/00 ,  F02D41/00 ,  F02B43/10 ,  F02M31/04 ,  F02B29/04

Abstract: A reformer system may include a reformer device having a fuel inlet, an air inlet and a gas outlet, a first valve set coupled to the fuel inlet and configured to selectively supply a reformer fuel flow from an engine fuel flow to the fuel inlet, a second valve set coupled to the air inlet and configured to selectively supply a reformer air flow from a compressor outlet air flow to the air inlet, and a controller in electrical communication with the first valve set and the second valve set. The controller may determine a target reformer fuel flow based on a target gas flow, determine a target reformer air flow based on the reformer fuel flow and a target air-to-fuel ratio, adjust the reformer fuel flow according to the target reformer fuel flow, and adjust the reformer air flow according to the target reformer air flow.

公开(公告)号：US08834820B1

公开(公告)日：2014-09-16

申请号：US13918059

申请日：2013-06-14

Applicant: Caterpillar Inc.

Inventor： Matthew Mowers ,  Karthik Jayasankaran ,  Deepti Bhosekar ,  Jason Bloms ,  Joshua Ratts ,  Aaron Harmon

IPC: B01D53/94 ,  F01N3/18 ,  F01N3/20

CPC classification number: F01N3/208 ,  B01D53/9431 ,  B01D53/9495 ,  F01N2550/02 ,  F01N2610/02 ,  F01N2900/0411 ,  F01N2900/1812 ,  Y02T10/24

Abstract: An emissions control system includes a Selective Catalytic Reduction (SCR) device, one or more monitoring devices and one or more sensors. The system further includes a controller configured to determine an operating emissions gas conversion ratio of the SCR device. The controller is further configured to determine an injection amount of a reduction agent to maintain an operating emissions gas conversion ratio of the SCR device and to adjust the operating emissions gas conversion ratio to a target emissions gas conversion ratio by adjusting the injection amount of the reduction agent to the SCR device. The system utilizes a Time-Temperature model to determine the target emissions gas conversion ratio and/or reduction agent injection ratio. The system further includes a reduction agent injector configured to supply the adjusted injection amount of the reduction agent to the SCR device.

Abstract translation: 排放控制系统包括选择性催化还原（SCR）装置，一个或多个监测装置和一个或多个传感器。 该系统还包括被配置为确定SCR装置的操作排放气体转化率的控制器。 所述控制器还被配置为确定还原剂的喷射量以维持SCR装置的操作排放气体转化率，并且通过调节所述还原剂的喷射量来将所述操作排放气体转化率调整为目标排放气体转化率 代理到SCR设备。 该系统利用时间 - 温度模型来确定目标排放气体转化率和/或还原剂注入比。 该系统还包括还原剂喷射器，该还原剂喷射器构造成将还原剂的调节喷射量提供给SCR装置。

公开(公告)号：US20160061134A1

公开(公告)日：2016-03-03

申请号：US14469618

申请日：2014-08-27

Applicant: Caterpillar Inc.

Inventor： Matthew P. Fletcher ,  Adwait V. Joshi ,  Matthew Mowers ,  Brandon Abel ,  Deepti Bhosekar ,  Karthik Jayasankaran

IPC: F02D41/14 ,  F01N3/18 ,  F02D41/02

CPC classification number: F02D41/1446 ,  F01N3/18 ,  F02D41/0275 ,  F02D41/146 ,  F02D41/22

Abstract: An engine control system including an engine configured to generate exhaust comprising an exhaust constituent and to operate in a first operating mode or a second operating mode different from the first operating mode. The engine control system can include a plurality of sensors configured to generate temperature data corresponding to at least one of a measured exhaust temperature and an ambient temperature, and exhaust constituent data corresponding to an exhaust constituent concentration. The engine control system can include a controller operatively coupled to the plurality of sensors and the engine, and configured to receive the temperature data and the exhaust constituent data from the plurality of sensors, and change an operating state of the engine from the first operating mode to the second operating mode when the temperature data is less than a predetermined temperature threshold and the exhaust constituent data is greater than a predetermined exhaust constituent threshold.

Abstract translation: 一种发动机控制系统，其包括被配置为产生排气的发动机，所述排气包括排气成分并且在不同于所述第一操作模式的第一操作模式或第二操作模式下操作。 发动机控制系统可以包括多个传感器，其被配置为产生对应于测量的排气温度和环境温度中的至少一个的温度数据，以及对应于排气成分浓度的排气成分数据。 发动机控制系统可以包括可操作地耦合到多个传感器和发动机的控制器，并被配置为从多个传感器接收温度数据和排气构成数据，并且从第一操作模式改变发动机的运行状态 当温度数据小于预定温度阈值并且排气成分数据大于预定排气成分阈值时，到第二操作模式。