公开(公告)号：US20150300228A1

公开(公告)日：2015-10-22

申请号：US14753042

申请日：2015-06-29

Applicant: Caterpillar Inc.

Inventor： Xiaohui Gong ,  Dustin I. Landwehr ,  Brian M. Cole ,  Ioan David

IPC: F01N3/20 ,  B67D7/02

CPC classification number: B67D7/02 ,  B67D7/3209 ,  F01N3/2066 ,  F01N2590/08 ,  F01N2610/02 ,  F01N2610/1413 ,  F01N2610/142 ,  F01N2610/1493 ,  Y02T10/24

Abstract: A method for delivering a reductant into a reductant tank through a fill conduit associated with the reductant tank is provided. The reductant tank is in selective fluid communication with an external source having a delivery conduit associated therewith. The method includes connecting the delivery conduit of the external source with the fill conduit of the reductant tank. The method also includes operating a valve provided on the delivery conduit in a first configuration. The method includes changing an operation of the valve from the first configuration to a second configuration. The method also includes purging of a portion of the reductant retained in the fill conduit into the external source through the pump assembly based on the second configuration of the valve.

Abstract translation: 提供了通过与还原剂箱相关联的填充导管将还原剂输送到还原剂罐中的方法。 还原剂罐与具有与其相关联的输送导管的外部源选择性地流体连通。 该方法包括将外部源的输送管道与还原剂罐的填充管道连接。 该方法还包括以第一配置操作设置在输送管道上的阀。 该方法包括将阀的操作从第一配置改变到第二配置。 该方法还包括基于阀的第二配置，通过泵组件将保留在填充管道中的部分还原剂吹扫到外部源中。

公开(公告)号：US10787945B2

公开(公告)日：2020-09-29

申请号：US15992628

申请日：2018-05-30

Applicant: Caterpillar Inc.

Inventor： Dustin I. Landwehr ,  Jay Venkataraghavan

IPC: F01N3/20 ,  B01D53/94

Abstract: A dosing control unit (DCU) may receive operational information associated with a selective catalytic reduction (SCR) aftertreatment system. The DCU may generate a deposit prediction, associated with the SCR aftertreatment system, based on the operational information. The deposit prediction may include information that identifies a predicted size of a deposit in a dosing zone of a plurality of dosing zones associated with the SCR aftertreatment system. The deposit prediction may be generated using a deposit growth model associated with predicting sizes of deposits in the plurality of dosing zones. The DCU may select a dosing scheme, of a plurality of dosing schemes, based on the deposit prediction. The DCU may implement the selected dosing scheme in order to cause diesel exhaust fluid (DEF) to be dosed in the plurality of dosing zones in accordance with the selected dosing scheme.

公开(公告)号：US20190368400A1

公开(公告)日：2019-12-05

申请号：US15992628

申请日：2018-05-30

Applicant: Caterpillar Inc.

Inventor： Dustin I. Landwehr ,  Jay Venkataraghavan

IPC: F01N3/20 ,  B01D53/94

Abstract: A dosing control unit (DCU) may receive operational information associated with a selective catalytic reduction (SCR) aftertreatment system. The DCU may generate a deposit prediction, associated with the SCR aftertreatment system, based on the operational information. The deposit prediction may include information that identifies a predicted size of a deposit in a dosing zone of a plurality of dosing zones associated with the SCR aftertreatment system. The deposit prediction may be generated using a deposit growth model associated with predicting sizes of deposits in the plurality of dosing zones. The DCU may select a dosing scheme, of a plurality of dosing schemes, based on the deposit prediction. The DCU may implement the selected dosing scheme in order to cause diesel exhaust fluid (DEF) to be dosed in the plurality of dosing zones in accordance with the selected dosing scheme.

公开(公告)号：US20160282167A1

公开(公告)日：2016-09-29

申请号：US15176945

申请日：2016-06-08

Applicant: Caterpillar Inc.

Inventor： Dustin I. Landwehr ,  Jason W. Hudgens

IPC: G01F23/22 ,  B60K37/02 ,  F01N3/02 ,  F01N11/00 ,  F01N3/20

CPC classification number: B60K37/02 ,  F01N3/02 ,  F01N3/2066 ,  F01N9/00 ,  F01N11/00 ,  F01N13/008 ,  F01N2550/05 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/02 ,  F01N2610/11 ,  F01N2610/142 ,  F01N2610/148 ,  F01N2900/1811 ,  F01N2900/1814 ,  Y02A50/2325

Abstract: A system and method to provide an operator indication for filling a reductant tank is provided. A first temperature sensor and a second temperature sensor receives a first signal and a second signal indicative of a coolant temperature and an ambient temperature associated with the reductant tank, respectively. Further, a controller determines a rate of change of temperature of the coolant based on the first signal and the second signal. The controller predicts thawing time for the fill valve based on the rate of change of the temperature of the coolant. The controller provides a first indication to the operator of a ready-to-fill status of the reductant tank based on the thawing time. The controller receives a third signal indicating a level of reductant in the reductant tank from a level sensor to identify a tank-full status of the reductant tank and to provide a second indication to the operator.

Abstract translation: 提供了提供用于填充还原剂罐的操作者指示的系统和方法。 第一温度传感器和第二温度传感器分别接收指示与还原剂箱相关联的冷却剂温度和环境温度的第一信号和第二信号。 此外，控制器基于第一信号和第二信号确定冷却剂的温度变化率。 控制器基于冷却剂的温度变化率预测填充阀的解冻时间。 控制器基于解冻时间向操作者提供还原剂罐的即将填充状态的第一指示。 控制器从液位传感器接收指示还原剂的还原剂水平的第三信号，以识别还原剂罐的储罐完整状态，并向操作者提供第二指示。