System for determining and regulating EGR (Exhaust Gas Recirculation) mass flow and use method thereof

A mass flow and EGR valve technology, which is applied in the system field of determining and adjusting EGR mass flow, can solve the problems of high cost and complicated measurement methods, and achieve the effects of occupying less space, simplifying measurement methods, and reducing application costs
CN103776503AActive Publication Date: 2014-05-07DONGFENG COMML VEHICLE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGFENG COMML VEHICLE CO LTD
Publication Date
2014-05-07

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Abstract

The invention provides a system for determining and regulating EGR (Exhaust Gas Recirculation) mass flow. The system comprises an EGR valve and a processor, wherein the EGR valve is connected with the output end of the processor by virtue of an EGR valve motor; the inlet of the EGR valve is provided with a sensor I; the outlet of the EGR valve is provided with a sensor II; the EGR valve motor is provided with a position opening sensor; the sensor I is a temperature and pressure sensor; the sensor II is a pressure sensor; The output ends of the sensor I, the sensor II and the position opening sensor are in signal connection with the input end of the processor. When the system is in use, the flow characteristic curve of the EGR valve is calibrated firstly and then stored into the processor, then the processor is used for calculating real-time EGR mass flow according the real-time data and the flow characteristic curve received by the processor and regulating the opening size of the EGR valve; due to the design, the cost is lowered, and the method is simple, convenient and practical.
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Description

technical field

[0001] The invention relates to a flow measurement system and its use method, in particular to a system for determining and adjusting EGR mass flow and its use method, which is particularly suitable for reducing costs and simplifying the measurement method. Background technique

[0002] In order to protect the living environment of our planet, countries are increasingly advocating the concept of low-carbon and environmentally friendly life. Due to the development of social economy, the engine has become an indispensable force in daily transportation and other aspects. With the increasing number of vehicles, the pollutants emitted by them continue to endanger the surrounding environment. Engine emissions mainly include nitrogen oxides and particulates. Nowadays, the emission regulations of diesel engines in various countries in the world are becoming increasingly stringent, while reducing NOx and soot has become a common problem and challenge we are facing. ...

Claims

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