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Regeneration of particulate filters in autonomously controllable vehicles

A particulate filter, motor vehicle technology, applied in the direction of machines/engines, electronic control of exhaust treatment devices, diagnostic devices of exhaust treatment devices, etc., can solve problems such as damage, accelerated aging of particulate filters, etc.

Active Publication Date: 2017-03-01
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] When the particulate filter is heavily loaded with soot, there is a risk that a spontaneously occurring or actively initiated regeneration of the particulate filter will generate such a large amount of exothermic heat that the particulate filter will undergo accelerated aging or can even be damaged due to overheating

Method used

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  • Regeneration of particulate filters in autonomously controllable vehicles
  • Regeneration of particulate filters in autonomously controllable vehicles
  • Regeneration of particulate filters in autonomously controllable vehicles

Examples

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Embodiment Construction

[0022] An autonomous vehicle may operate in a self-control mode in which control of the vehicle is performed automatically by the vehicle and not in response to driver input. During autonomous mode, particulate filter regeneration may be performed to burn off accumulated soot / particulate matter. Aspects of self-control can be adjusted during regeneration to control oxygen content and temperature of the exhaust to provide adequate regeneration and avoid over-temperature conditions that can degrade the particulate filter.

[0023] When adjusting control parameters during autonomous mode to increase regeneration efficiency and / or prevent thermal degradation, the control parameters originally present or determined in autonomous mode can be used as starting points.

[0024] On the one hand, the control parameters available can specify the basic conditions to be considered. For example, a maximum speed limit and / or a specified route can be predefined as basic conditions, which cann...

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Abstract

The invention relates to regeneration of particulate filters in autonomously controllable vehicles. Embodiments for regeneration a particulate filter in a motor vehicle having a self-control mode for the autonomous control of a drive mode and having a diesel particulate filter disposed in the exhaust system of a diesel engine of the motor vehicle are provided. In one example, a method for protecting the diesel particulate filter from overheating and premature aging comprises: starting the self-control mode, starting / verifying a regeneration process of the diesel particulate filter with combustion of the soot particles adsorbed on the diesel particulate filter, and monitoring a temperature of the diesel particulate filter and / or of the exhaust gas directed through the diesel particulate filter during the regeneration process. Depending on a monitoring result of the monitoring, a control for the self-control mode of the motor vehicle can be adjusted.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of German Patent Application No. 102015215867.5 filed on 20 August 2015 and German Patent Application No. 102015215868.3 filed on 20 August 2015, the entire contents of each of which are hereby incorporated by reference manner incorporated for all purposes. technical field [0003] The present disclosure relates to a method and a control device for regeneration of a particulate filter in a vehicle with an autonomous drive mode. Background technique [0004] The use of particulate filters in the exhaust aftertreatment of motor vehicles has become essential to comply with increasingly stringent emission standards. A particulate filter in the exhaust system of a diesel or gasoline engine of a motor vehicle filters the solids contained in the exhaust gas, especially soot, and stores them via embedding on surfaces or in the interior of the walls of the particulate filter. [0005] Solid...

Claims

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Application Information

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IPC IPC(8): F01N9/00F01N3/023F01N11/00
CPCF01N3/0232F01N9/002F01N11/002F01N2900/1406F01N2900/1404F01N2550/20F01N3/2066F01N3/035F01N11/00F01N2900/08F01N2900/10F01N2900/12F01N2900/1602F01N3/023F01N2550/04Y02A50/20Y02T10/40
Inventor F·D·斯迈特C·波尔恩森E·莱斯迈尔
Owner FORD GLOBAL TECH LLC
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