Multi-path sampling system for engine emission post-treatment emission reduction effect analysis test

• Main Authors: XU NING, LOU DIMING, CHEN YUJIE, HU QINGYAO
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2014
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

The utility model provides a multi-path sampling system for an engine emission post-treatment emission reduction effect analysis test. The multi-path sampling system at least comprises multiple exhaust sampling pipelines, a control unit connected with all controlled valves, and a power supply unit for supplying power to the control unit, wherein one controlled valve which is controlled to be opened and closed is arranged on the corresponding exhaust sampling pipeline; furthermore, at least a part of exhaust sampling pipelines are wrapped with heat preservation layers. The multi-path sampling system for the engine emission post-treatment emission reduction effect analysis test has the advantages that automatic switching among all the exhaust sampling pipelines can be realized; the problem of errors caused by high fuel consumption and previous and later working condition differences because an engine is required to be frequently idled or stopped, then restarted and warmed to stabilize the working condition in a