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Method and System for Non-Uniform Catalyst Heating for Internal Combustion Engine

A uniform heating and catalytic converter technology, applied to internal combustion piston engines, combustion engines, machines/engines, etc., can solve the problem of insufficient purification of engine exhaust

Inactive Publication Date: 2017-12-29
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, during the period when the temperature of the catalytic converter is lower than the light-off temperature, the exhaust gas of the engine is not sufficiently purified

Method used

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  • Method and System for Non-Uniform Catalyst Heating for Internal Combustion Engine
  • Method and System for Non-Uniform Catalyst Heating for Internal Combustion Engine
  • Method and System for Non-Uniform Catalyst Heating for Internal Combustion Engine

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Embodiment Construction

[0037] The following description is merely exemplary in nature and is not intended to limit the invention, application or uses.

[0038] figure 1 An illustration of a schematic diagram of a heated catalytic converter system 100 for heating a catalyst when the catalyst is below a predetermined light-off temperature is provided in accordance with an exemplary embodiment; it should be understood that a catalytic converter according to an exemplary embodiment may Utilized to reduce pollutants in exhaust gases produced by all types of engines burning gasoline, diesel or alternative fuels as fuel. For example, catalytic converters according to exemplary embodiments may be utilized to reduce emissions from passenger cars, commercial and recreational vehicles, agricultural vehicles and machines, lawn mowers, snowplows, generators, and other outdoor machines and equipment.

[0039] System 100 includes exhaust passage 110 configured to receive exhaust from an engine exhaust manifold 12...

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PUM

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Abstract

A method and system for non-uniform catalyst heating for reducing exhaust gas emissions when the catalyst is below a predetermined light off temperature is provided. The method includes providing a catalyst formed of a plurality of electrically conductive subsections and at least one catalyst heating device that is operable to heat at least one of the plurality of electrically conductive subsections of the catalyst to form at least one predetermined non-uniform heating pattern. A heater control module is provided for controlling the operation of the at least one catalyst heating device. If the engine is in a cold start condition, then the heater control module causes the at least one catalyst heating device to heat at least one of the electrically conductive subsections of the catalyst to obtain a first predetermined non-uniform heating pattern.

Description

technical field [0001] An apparatus consistent with an exemplary embodiment relates to a method for engine exhaust treatment. More specifically, an apparatus consistent with an exemplary embodiment relates to a method for uneven catalyst heating during engine operation to reduce exhaust emissions. Background technique [0002] It is generally accepted that the emissions benefit from the catalytic treatment of the exhaust of an internal combustion engine, eg, through a catalytic converter. In general, the catalytic converter used in this type of converter can only purify the pollutants in the exhaust gas when the temperature of the catalytic converter is higher than a certain temperature, that is, when the temperature is lower than the activation temperature of the catalytic converter, the catalytic converter in the converter does not kick in. [0003] Typically, the catalyst in the converter is gradually heated by the exhaust gas and reaches an activation temperature (comm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/20F01N9/00
CPCF01N3/2013F01N9/00F01N2900/1602F01N2560/06F01N2240/16F01N2900/12F01N2900/1626F01N3/2026Y02T10/12Y02T10/40F01N11/002F02D41/0255
Inventor 苗勇S·菲力克斯K·A·韦伦科特
Owner GM GLOBAL TECH OPERATIONS LLC
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