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Method for controlling engine EGR rate by combined pulse spectrum

An engine and map technology, applied in engine control, engine components, combustion engines, etc., to improve real-time performance, improve control accuracy and speed, and improve unresponsive effects

Inactive Publication Date: 2010-06-16
SHANDONG SHENPU TRAFFIC TECHNOLOGY CO LTD
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Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a strategy for adaptively generating a dynamic map according to changes in engine-related characteristics and engine use conditions during the working process for the problems existing in the current gasoline engine control methods, and then Provides a method for controlling the EGR rate of the engine by combining the dynamic map parameters and the basic map parameters determined by the original prototype bench

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  • Method for controlling engine EGR rate by combined pulse spectrum
  • Method for controlling engine EGR rate by combined pulse spectrum
  • Method for controlling engine EGR rate by combined pulse spectrum

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Embodiment Construction

[0047] The method for controlling the engine EGR rate by the combined map proposed by the present invention is embodied in the realization of the control function of the conventional controller (engine central controller ECU) and the cerebellar joint controller CMAC according to the control strategy; The implementation process is explained separately.

[0048] As shown in Figure 1: The control system includes microprocessor, cerebellar joint controller CMAC, ferroelectric memory, sensor signal, signal conditioning circuit, power drive circuit, EGR system driver, ferroelectric memory and cerebellar joint controller CMAC interconnect, cerebellum The joint controller CMAC is interconnected with the microprocessor, the sensor signal is connected with the microprocessor through the signal conditioning circuit, the microprocessor is connected with the power drive circuit, and the power drive circuit is connected with the EGR system drive.

[0049] The relevant sensor signal is input to t...

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Abstract

The invention provides a method for controlling an engine EGR rate by a combined pulse spectrum, belonging to the vehicle gasoline engine control field, comprising a basic EGR rate pulse spectrum parameter and a dynamic EGR rate pulse spectrum parameter, wherein, the basic EGR rate pulse spectrum parameter is standardized by a jack horse or optimized and standardized by the jack horse and a road parameter, the dynamic EGR rate pulse spectrum parameter is generated by the self-standardization of the self-study on line of a control system and the self-optimization, and the adaptively control ofthe EGR rate of the gasoline engine is controlled by the control system according to a control strategy. The combined pulse spectrum control way synthesized by the self-adapting study method is adopted; therefore, the influence of the change in a controlled system and the unknown change on the engine is corrected, thereby improving the control accuracy of the open-loop control and increasing speed. The self-adapting study controls the strategy generating a dynamic pulse spectrum and advances the predictive control, thereby correcting the control lag generated by various time-lag effects and improving the timeliness of the control.

Description

Technical field [0001] A method for controlling the EGR rate of an engine by a combined map belongs to the field of automobile gasoline engine control. Specifically, it is a method of controlling the engine by combining the dynamic map generated by adaptive learning with the original basic map. Background technique [0002] Vehicle gasoline engine control is divided into fuel injection control, ignition control, intake control and emission control, and other auxiliary control systems; among them, fuel injection and intake are related to determine air-fuel ratio control, and ignition control is ignition advance angle and ignition closure rate Control, EGR rate is used for emission control. [0003] In the control process, the control unit checks the control map according to the basic control conditions, and corrects the control map according to the engine state conditions reflected by the sensors, and controls each actuator to control the target. Control is divided into open loop ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D21/08F02M26/47
CPCY02T10/121Y02T10/12
Inventor 高小群宫春勇赵华
Owner SHANDONG SHENPU TRAFFIC TECHNOLOGY CO LTD
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