Endurance test data acquisition system of gasoline vehicle

Abstract

The invention relates to an endurance test data acquisition system of a gasoline vehicle, which is provided with a CAN (Control Area Network) card connected with a host computer. A joint of the CAN card is connected on a CAN bus. The data acquisition system is also respectively provided with a vehicle condition tracking unit, a driver monitoring unit and a temperature acquisition unit which are arranged on a moving vehicle and connected with the host computer in sequence by the CAN bus and the CAN card; the vehicle condition tracking unit is provided with a four-channel data acquisition module connected with the CAN bus, and a GPS (Global Positioning System) vehicle speed meter connected with the four-channel data acquisition module; and the driver monitoring unit is provided with a driver monitoring display instrument which is connected with the CAN bus and is used for displaying the target vehicle speed and the actual vehicle speed of test cycle. The temperature acquisition unit comprises an eight-channel data acquisition module which is connected with the CAN bus. In the data acquisition system, the time needed by operation of an engine rack for replacing whole vehicle endurance with rack endurance can be accurately calculated, and the theoretical foundation is laid for realizing the replacement of the whole vehicle endurance with the rack endurance.

Description

technical field [0001] The invention relates to a data acquisition system for a durability test of a gasoline vehicle catalytic converter. In particular, it relates to a gasoline vehicle catalytic converter durability test data acquisition system for completing the collection of moving vehicle speed and catalytic converter temperature in the road durability test and the catalytic converter temperature in the bench durability test. Background technique [0002] Engine bench catalytic converter aging test is one of the optional methods for durability test of exhaust aftertreatment device for vehicle type approval. The aging test of the catalytic converter is a test method used to ensure that the catalytic converter will not fail within the full service life of the vehicle and that the emission of the vehicle will not exceed the standard. Temperature and time are the main factors affecting the thermal aging of bench catalysts. The judgment of the aging time is the technical b...

AI Technical Summary

Problems solved by technology

The existing bench aging test to replace the vehicle road durability test mostly relies on empirical estimation and lacks actual data support. However, the realization of the engine bench three-way catalytic converter aging durability method requires accurate and strict time judgment, so it is necessary A calculation method that can convert the temperature and time of the road durability catalytic converter to the temperature and time corresponding to the aging test on the bench, and this calculation method requires a set of three-way catalytic converters collected in the road durability and bench durability tests of automobiles The device of the corresponding data

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