Passenger vehicle GPF reliability test method

Abstract

The invention discloses a passenger vehicle GPF reliability test method, which comprises the following steps: a temperature sensor being installed on a vehicle GPF, wherein the GPF temperature is monitored, the weight of particles captured by the GPF is measured, and a data acquisition system is configured to perform whole-process monitoring on the state in the vehicle test process; compiling a complete assessment condition and mileage distribution; specifically decomposing the assessment working condition and mileage distribution into a vehicle driving and operation scheme according to a testfield road to form a voice prompt file, and performing vehicle driving and related operation by a driver according to the voice prompt file in the test process to ensure that the vehicle runs according to a specified working condition. and in the test process, after each working condition is finished, the GPF state and the vehicle emission result of the vehicle are checked, and the GPF reliability is judged. According to the method, the influence of vehicle driving environment factors on the GPF reliability is accurately reduced, so that the test result is more accurate, and the GPF reliability can be truly and comprehensively verified.

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...

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