Vehicle running signal simulation system for engine stand benchmarking

Abstract

The invention designs a vehicle running signal simulation system for engine stand benchmarking, comprising a signal acquisition and input module, a logic and calculation processing module, a signal generation and output module and an operation and monitoring module. The signal acquisition and input module collects signals of an engine or a stand and calculates the rotation speed of the engine. Thelogic and calculation processing module calculates the rotation speed signal frequency to be simulated by the rotation speed and speed ratio of the engine. The signal generation and output module generates various analog signals according to the rotation speed signal frequency and waveform information. The operation and monitoring module is connected with the logic and the calculation processingmodule, and is used for inputting parameters required by the logic and calculation module and displaying calculation results. The system can provide the missing operating signals of other related systems of the vehicle when the benchmarked engine is running, and remove limits on the engine to solve the problem that the various benchmarked engines cannot be normally ignited on the stand.

Description

technical field [0001] The invention relates to the field of automobile testing, in particular to a vehicle running signal simulation system used for engine bench benchmarking. Background technique [0002] Benchmarking test is a commonly used technical method in the process of automobile performance development. Through this test, various performance data of competing models or high-performance models can be obtained, which can be used for formulating performance indicators, performance control reference and performance horizontal evaluation of developed models. The benchmarking test of the whole vehicle is relatively easy. It does not need to make special changes to the vehicle, and the test can be carried out directly according to the test specifications. However, the benchmarking test of the engine, which is the core component of the vehicle, is very difficult. [0003] The engine test test needs to be carried out on a special bench, and the ignition and various working ...

AI Technical Summary

Problems solved by technology

However, when the engine is running and the vehicle is at rest, the information conflict between the engine and other systems of the vehicle will make the vehicle think that other related systems (such as gearbox, brake system, four-wheel drive system, etc.) have failed, thereby limiting engine speed, Normal operation such as torque

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