A kind of gpf reliability test method of passenger car

Abstract

The invention discloses a method for testing the reliability of the GPF of a passenger car, comprising the following steps: installing a temperature sensor on the GPF of the vehicle, monitoring the temperature of the GPF and measuring the weight of particles captured by the GPF, and configuring a data acquisition system to monitor the test process of the vehicle The state in the vehicle is monitored throughout the process; it is compiled into a complete assessment working condition and mileage distribution; the assessment working condition and mileage distribution are specifically decomposed into the vehicle driving and operation plan according to the test track road, and a voice prompt file is formed. During the test, the driver Carry out vehicle driving and related operations according to the voice prompt file to ensure that the vehicle runs according to the specified working conditions; check the vehicle GPF status and vehicle emission results after each working condition in the test process, and judge the GPF reliability. The invention accurately restores the influence of vehicle running environment factors on the GPF reliability, makes the test result more accurate, and can truly and comprehensively verify the GPF reliability.

Description

technical field [0001] The invention relates to the technical field of automobile testing, in particular to a GPF reliability test method for a passenger car vehicle. Background technique [0002] Gasoline engine particle emissions are one of the pollutants that need to be controlled in vehicle emissions. The National VI regulations strictly control and supervise the quality and quantity of gasoline engine particle emissions. GPF is an important means to reduce vehicle particle emissions from the perspective of after-treatment. When GPF is installed in the vehicle exhaust system, it can filter nearly 90% of particulate matter emissions. However, after the GPF captures a certain amount of particulate matter, it is necessary for the engine to create conditions for its high-temperature regeneration, otherwise it may cause blockage and affect vehicle performance, and the GPF itself has a maximum thermal stress tolerance range. Therefore, it is necessary to verify the reliabilit...

AI Technical Summary

Problems solved by technology

The second prior art discloses testing the GPF at a specific rotational speed, but the second prior art only discloses testing the GPF under a simple single working condition, and does not disclose the durability of the GPF using the actual complex working conditions. test, therefore, prior art 2 does not disclose the invention point of this proposal

And because the actual working conditions proposed in this technical disclosure are not the existing working conditions, but the actual working conditions that have a great influence on the reliability of the GPF summed up according to the actual operation rules of the vehicle, the prior art 2 is also It is impossible to have any technical inspiration for the invention of this proposal

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