A Model-Based Gasoline Engine Calibration Method

A calibration method and gasoline engine technology, applied in the field of gasoline engines, can solve the problems of complex calibration technology and expensive automatic calibration equipment, and achieve the effect of reducing calibration cost and calibration workload

Active Publication Date: 2017-07-07
JILIN UNIV
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Problems solved by technology

Although this method has high calibration efficiency and high precision, the automatic calibration equipment is expensive and the calibration technology is complicated.

Method used

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  • A Model-Based Gasoline Engine Calibration Method
  • A Model-Based Gasoline Engine Calibration Method
  • A Model-Based Gasoline Engine Calibration Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0117] Example: Optimizing and Calibrating the Ignition Advance Angle to Improve Engine Dynamics Experiment

[0118] The optimized optimal ignition advance angle replaces the original ignition advance angle to control the engine, and then compares the output torque before and after the optimized calibration to observe the degree of torque influence. Figure 12 Shown is the effect comparison structure diagram before and after optimization calibration. Among them, TESIS enDYNA is a high-fidelity virtual engine, and it is also the object of the optimization and calibration function of the present invention. The same working condition means that the input conditions are the same as the accelerator pedal position and the engine speed. The calibrated ignition advance angle and the ignition advance angle controller that comes with enDYDA are used to control the virtual engine respectively, and the output torque is compared.

[0119] Set the enDYNA engine in driving mode, given the a...

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Abstract

A model-based calibration method for a gasoline engine belongs to the technical field of gasoline engines. The object of the present invention is to design and develop a gasoline engine calibration method based on a statistical model mainly for the dynamic optimization calibration process of a gasoline engine. The present invention includes (1) the design of the test operating point, (2) the establishment of a mathematical statistical model, and (3) the design of an optimized calibration program. In the first test design stage of the present invention, relatively few test points can be selected to reduce the workload, and the statistical model of the engine can be established in combination with mathematical statistical methods after collecting relevant data. Finally, the optimal calibration is carried out on the basis of the statistical model. This method saves time and reduces the cost on the basis of improving the performance of the engine without losing the calibration accuracy. Increase the output torque and solve the problems of time-consuming, labor-intensive and low-efficiency traditional manual calibration methods, while the existing automatic optimization calibration equipment is complex in technology and expensive.

Description

technical field [0001] The invention belongs to the technical field of gasoline engines. Background technique [0002] Engine bench calibration is the basis of vehicle calibration. The purpose of calibration is generally to improve vehicle power, economy, comfort and emission, among which emission performance is a rigid indicator stipulated by national standards and must be passed. At present, domestic calibration technologies vary widely, and the optimization calibration of gasoline engine parameters mainly has the following problems: [0003] 1. Theoretically, the more accurate the calibration of the test working point is, the larger the test working point is required, but this will inevitably increase the calibration workload; however, if there are too few test working points, the engine characteristics cannot be accurately reflected and the calibration effect will be affected , the car's power, economy, emissions, etc. will also become worse. [0004] 2. The traditiona...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 胡云峰胡得胜陈虹
Owner JILIN UNIV
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