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Exhaust pollutants measuring apparatus of heavy type diesel vehicle

A heavy-duty diesel engine and measuring device technology, which is applied in the direction of measuring devices, engine testing, machine/structural component testing, etc., to achieve the effect of easy operation

Active Publication Date: 2009-05-20
TIANJIN CPOWER TECH DEV CO LTD
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  • Exhaust pollutants measuring apparatus of heavy type diesel vehicle

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Embodiment Construction

[0020] The present invention will be further described below in combination with specific embodiments and implementation examples.

[0021] The vehicle exhaust pollutant measuring device of heavy-duty diesel engine of the present invention, it comprises: (1) a first subsonic Venturi flowmeter 2, the inlet end of this first subsonic Venturi flowmeter 2 passes exhaust gas Exhaust pipe 21 links to each other with the outlet of engine exhaust pipe 1 and its outlet end is connected with an outlet pipe that communicates with atmosphere; (2) an air and exhaust mixing pipe 4, the inlet of this air and exhaust mixing pipe 4 Be connected with described tail gas exhaust pipe 21 by particulate matter sampling pipe 3; 8. The outlet of the dilution air inlet pipeline of the third electromagnetic valve communicates with the air and exhaust mixing pipe 4 and the inlet of the first electromagnetic valve communicates with the dilution air, one of which is sequentially equipped with The fourth ...

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Abstract

The invention discloses a device for measuring exhaust contaminant of a heavy-duty diesel engine in operation. The device comprises a first subsonic venturi tube, an air and exhaust gas mixing tube, an outlet, a first pipeline, three particulate matter filtering brackets, a computer, a heating type filter and a heating pump which are sequentially connected, an analytic instrument unit and a computer control unit, wherein the outlet is provided a dilute air inlet pipeline of a second subsonic venturi tube and is communicated with the air and exhaust gas mixing tube; the first pipeline is sequentially provided with a fourth electromagnetic valve and a critical flow venturi tube and is in parallel arrangement with a dilute air inlet pipeline part provided with a first electromagnetic valve and the second subsonic venturi tube; the three particulate matter filtering brackets are in parallel connection with one another; and the computer control unit is used for calculating the emission value of the exhaust contaminant of the diesel engine. A result measured through the device can be compared with the prior result (g / kW.h) measured in delivery of the diesel engine; therefore, a relevant national standard can be also established; and the device is practical and simple in operation.

Description

technical field [0001] The invention relates to a device related to power machinery emission measurement, more specifically, the invention relates to a heavy-duty compression ignition engine (commonly called diesel engine) exhaust pollutant measurement device for vehicles in use. Background technique [0002] The number of automobiles in my country is increasing year by year, and its exhaust pollutants have caused serious damage to the quality of the environment. For this reason, the country has adopted more and more strict limit value regulations and testing specifications for the emissions of automobiles and engines, and has corresponding inspection regulations and mandatory maintenance systems for in-use vehicles. [0003] For vehicles equipped with heavy-duty diesel engines, the state has issued "Vehicle Compression Ignition Type, Gas Fuel Ignition Engine and Vehicle Exhaust Pollutant Emission Limits and Measurement Methods (China Phase III, IV, V)" (GB17691-2005 ), thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N35/00G01N27/00G01M15/00
Inventor 李德宽李斌
Owner TIANJIN CPOWER TECH DEV CO LTD
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