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Method and device for simulation of ECU hardware-in-loop of engine in air cylinders

An engine and hardware technology, applied in the field of engine ECU hardware-in-the-loop cylinder splitting simulation, can solve problems such as real-time change reflection, inability to meet simulation requirements, and inability to conduct testing, and achieve the effect of improving authenticity and accuracy

Active Publication Date: 2014-07-09
WEICHAI POWER CO LTD
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Problems solved by technology

Although this method can comprehensively reflect the operating conditions of the engine, it cannot realize the cylinder-by-cylinder simulation of the engine, and cannot satisfy some specific simulation requirements.
For example, the change of the injection pulse width of a certain fuel injector cannot be reflected by the real-time change of the torque curve, and cannot be reflected by the real-time change of the rotational speed. Finally, the control strategy for the ECU to judge the misfire or wear of the fuel injector through the rotational speed change is Unable to test, which brings inconvenience to the work of R&D personnel and maintenance personnel

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  • Method and device for simulation of ECU hardware-in-loop of engine in air cylinders
  • Method and device for simulation of ECU hardware-in-loop of engine in air cylinders
  • Method and device for simulation of ECU hardware-in-loop of engine in air cylinders

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Embodiment Construction

[0050] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0051] see figure 1 , which is a flow chart of the first embodiment of an engine ECU hardware-in-the-loop simulation method provided by the present invention.

[0052] In this example, include:

[0053] S101: Collect the injection information of the fuel injector in the cylinder.

[0054] S102: Determine the current working cylinder according to the current crank angle.

[0055] S103: Determine the indicated torque of the working cylinder according to the injection information.

[0056] When simulating the engine, it is first necessary to sample the parameters of the operation of the cylinder within a certain period of time, and collect the injection information of the injector in the engine cylinder. The injection information may ...

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Abstract

The invention provides a method and device for simulation of an ECU hardware-in-loop of an engine in air cylinders. The method comprises the steps that spraying information of oil sprayers in the air cylinders is collected; according to a current crank angle, the current work air cylinder is determined; according to the spraying information, the indication torque of the work air cylinder is determined. According to the method, analog simulation is conducted on the appointed air cylinders respectively, the actual operation condition or a peak value of the specific air cylinder is measured, and the authenticity and the accuracy of a simulation result are improved.

Description

technical field [0001] The invention relates to the technical field of fuel engine ECU, in particular to an engine ECU hardware-in-the-loop simulation method and device. Background technique [0002] As the main unit of power output, the fuel engine is one of the most important parts of a motor vehicle. In actual operation, the working process of the engine is to circulate air and fuel in the cylinders, each cylinder is ignited and burned in time, and the torque output is generated through combustion expansion to drive the vehicle. [0003] In reality, in order to better test the functions of the engine ECU and its compatibility with different working conditions and extreme environments, hardware-in-the-loop simulation tests are generally performed on the engine ECU. By collecting the operating parameters of the engine under different working conditions, the problems existing in the engine ECU can be found early, and technical adjustments can be made to improve the performa...

Claims

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Application Information

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IPC IPC(8): G05B17/02
Inventor 宋长营徐永新王龙
Owner WEICHAI POWER CO LTD
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