EGR valve control method and device and electronic equipment

A technology of EGR valve and control method, applied in electrical control, mechanical equipment, engine control and other directions, can solve problems such as reducing the reliability of vehicle components

Active Publication Date: 2021-04-20
WEICHAI POWER CO LTD
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Problems solved by technology

[0004] In view of this, the present invention provides an EGR valve control method, device and electronic equipment to

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  • EGR valve control method and device and electronic equipment
  • EGR valve control method and device and electronic equipment
  • EGR valve control method and device and electronic equipment

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[0057] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0058] The existing main technologies that can effectively reduce the nitrogen oxides of internal combustion engines are SCR and EGR technologies. EGR technology is to introduce the exhaust gas from the internal combustion engine into the engine to participate in combustion again, and play a role in reducing the oxygen concentration and combustion temperature, thereby reducing the nitrogen oxides. generate. The existing EGR technology is mainly divided into hi...

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Abstract

The invention provides an EGR valve control method and device and electronic equipment. According to the EGR valve control method and device and the electronic equipment, a current absolute humidity value and a maximum absolute humidity value of each easy-to-condense position are calculated, a target easy-to-condense position with condensed water is determined in a mode of judging whether the current absolute humidity value is not smaller than the maximum absolute humidity value or not, the opening degree of an EGR valve is reduced through a valve opening degree adjusting strategy corresponding to the target easily-condensed position, the flow of waste gas passing through the EGR valve is reduced, condensate water generated by the waste gas can be reduced, and therefore the condensation risk is reduced, the influence of condensation on vehicle devices is reduced, and the reliability of the vehicle devices is improved.

Description

technical field [0001] The invention relates to the field of low-pressure EGR, and more specifically, relates to an EGR valve control method, device and electronic equipment. Background technique [0002] Exhaust gas recirculation EGR (Exhaust Gas Re-circulation) technology is to introduce the exhaust gas from the internal combustion engine into the engine to participate in the combustion again, which can reduce the oxygen concentration and combustion temperature, thereby reducing the formation of nitrogen oxides. Existing EGR technologies are mainly divided into high-pressure EGR technology and low-pressure EGR technology. Low-pressure EGR technology generally takes exhaust gas from the diesel particulate filter DPF (Diesel Particulate Filter), and the exhaust gas returns to the turbocharger through EGR coolers, EGR valves and other components. It is mixed with fresh intake air before the compressor of the compressor. [0003] The high-temperature exhaust gas needs to be c...

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Application Information

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IPC IPC(8): F02D41/00F02D21/08
Inventor 仲昆孙婷张学敏王作峰尹晓军贾帅
Owner WEICHAI POWER CO LTD
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