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Fuel engine catalyst start-up control method and system

A technology of a fuel engine and a control method, applied in the field of vehicles, can solve the problems of low exhaust gas conversion efficiency of a catalyst system, and achieve the effects of improving exhaust gas conversion efficiency and reducing environmental pollution

Active Publication Date: 2019-11-22
BAIC GRP ORV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a fuel engine catalyst light-off control method to solve the problem in the prior art that the exhaust gas conversion efficiency of the catalyst system is low under the cold start emission condition of the fuel engine

Method used

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  • Fuel engine catalyst start-up control method and system
  • Fuel engine catalyst start-up control method and system
  • Fuel engine catalyst start-up control method and system

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Embodiment Construction

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0020] The embodiment of the present invention provides a method for controlling the ignition of a fuel engine catalyst, which is applied to a vehicle. See figure 1 , figure 1 It is a flowchart of a method for controlling ignition of a catalyst light-off of a fuel engine provided by an embodiment of the present invention, such as figure 1 As shown, including the following steps:

[0021] Step 101: If it is determined that the engine will be started within a pres...

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Abstract

The invention provides a fuel engine catalyst start-up control method and system. The method is applied to vehicles and comprises the steps of if judging that an engine is to be started within a preset time, calculating the expected starting time of the engine according to the overall operation condition of the vehicle; detecting the current temperature of a catalyst system in a vehicle exhaust system; based on the current temperature of the catalyst system and the expected starting time of the engine, obtaining a heating control signal; and based on the heating control signal, heating the catalyst system. By means of the fuel engine catalyst start-up control method, the catalyst system can be intelligently heated in advance under the cold start emission condition of the fuel engine, so that the conversion efficiency of the catalyst system is improved, and environmental pollution caused by vehicle tail gas is reduced.

Description

Technical field [0001] The invention relates to the technical field of vehicles, and in particular to a method for controlling the ignition of a fuel engine catalyst. Background technique [0002] At present, the exhaust gas discharged from the fuel engine of a vehicle is converted into exhaust gas through a catalyst system in the vehicle exhaust system. However, when the vehicle's fuel engine is switched from non-working to working mode, the engine will experience a cold start emission. Under cold start emission conditions, because the catalyst in the exhaust system does not reach the ideal working temperature, the exhaust gas conversion efficiency of the catalyst system is low , The exhaust gas emissions are relatively high and pollute the environment. Summary of the invention [0003] The invention provides a fuel engine catalyst light-off control method to solve the problem of low exhaust gas conversion efficiency of the catalyst system under the condition of cold start emiss...

Claims

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Application Information

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IPC IPC(8): F01N3/20F01N11/00F01N13/00
CPCF01N3/2006F01N3/2013F01N11/002F01N13/00Y02T10/40Y02A50/20
Inventor 青坷李伟绩
Owner BAIC GRP ORV CO LTD
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