| abstract |
The invention discloses a kind of on-board emission test system of motor vehicle ammonia and its working methods, comprising: NMS ammonia analysis system and power supply system；By circuit and gas circuit that power supply system is transformed, it is ensured that NMS equipment meets 220V power supply and air compression force reaches 6bar, while considering the installation space of small-sized passenger vehicle, and the test of the small-sized practical emission intensity of passenger vehicle road is realized with this.The present invention has the advantages that realizing the on-road emission test of laboratory version motor vehicle ammonia test, the status of true motor vehicle emission intensity is grasped, in turn avoids the waste of existing resource caused by purchasing new equipment, this item scheme will be with strong economic value and social benefit. |