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Gasoline particulate filter regeneration strategy

A particle filter and particle technology, applied in the direction of machine/engine, electric spark ignition controller, electronic control of exhaust treatment device, etc.

Active Publication Date: 2018-12-07
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the vehicle is used for very short trips or operated for short periods of time in cold weather, the exhaust system, especially the particulate filter, may not reach the passive self-regeneration temperature, preventing this regeneration

Method used

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  • Gasoline particulate filter regeneration strategy
  • Gasoline particulate filter regeneration strategy
  • Gasoline particulate filter regeneration strategy

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Embodiment Construction

[0022] The following description is merely exemplary in nature and is not intended to limit the disclosure, application or uses.

[0023] refer to Figure 1A , shows a first, underfloor system configuration 8 of a three-way catalytic converter (TWC) 10 and a separate gas particulate filter (GPF) 12 . A conventional three-way catalytic converter 10 includes an inlet port or opening 14 that receives exhaust gas from a gasoline fueled internal combustion engine 16 and an outlet port or opening 18 that connects to an inlet port or opening 22 of a gas particulate filter 12 through an exhaust pipe 20 . In turn, the gas particulate filter 12 has an outlet port or opening 24 that supplies the output of the particulate filter 12 to other components of the exhaust system, such as mufflers, resonators, and tailpipes (none of which are shown).

[0024] Upstream or forward of the gas particulate filter 12 and disposed in the exhaust duct 20 is a pre-GPF temperature sensor 26 which, as its ...

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PUM

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Abstract

The method determines whether soot loading of a gas particulate filter (GPF) requires regeneration. If it does, the temperature of the GPF is read to determine whether it is sufficiently high to achieve particulate (soot) burning. If it is not, an engine control module is commanded to adjust variables such as spark timing, fuel injection timing and valve timing. If the temperature of the particulate filter is sufficiently high that regeneration can occur, other variables may be adjusted such as leaning the air / fuel mixture, retarding the spark timing, the fuel injection and valve timing. Because the latter adjustments may limit or reduce either engine speed or power, messages in a message center are provided indicating, first, that the driver should continue driving for GPF regeneration and, subsequently, under certain conditions, that the engine power has been reduced. Operation of the motor vehicle proceeds until, based upon sensed conditions or pre-determined experimental or empirical data, the filter has been regenerated.

Description

technical field [0001] The present disclosure relates to regeneration strategies for gasoline particulate filters (GPFs) for gasoline fueled motor vehicles, and more particularly to regeneration strategies for heavy duty gasoline particulate filters for internal combustion engines in gasoline fueled motor vehicles. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may or may not constitute prior art. [0003] Increasingly stringent emissions standards continue to challenge automotive and motor vehicle engineers and designers around the world. For example, the new Euro 6d and China 6 particle emission limits reduce the previous particle number (PN) limit by a factor of ten. This new standard is 6x 10 per kilometer 11 particles. [0004] While port fuel injection (PFI) gasoline engines can usually meet this standard, the industry is increasingly moving to gasoline direct injection (GDI) e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N9/00F01N3/023
CPCF01N9/002F01N3/021F01N3/023F01N11/002F01N2560/06F01N2900/1602F02D41/0245F02D41/025F02D41/029F02D41/34F02D2200/0802F02D2200/0812F02D2200/1002F02D2200/101F02N11/0829F02P5/1502Y02T10/12Y02T10/40F02D37/02F02D41/042
Inventor R·F·哈塔尔A·米歇尔S·席塞尔N·奥斯M·克拉夫特
Owner GM GLOBAL TECH OPERATIONS LLC
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