A simple vehicle-mounted emission test device and method for off-road diesel machinery
An emission testing, off-road technology, applied in measurement devices, vehicle testing, machine/structural component testing, etc., can solve the problem of exhaust pollution that cannot meet the real-time monitoring requirements of particulate matter and nitrogen oxides, is not applicable, and cannot be installed for a long time. Object detection and other issues
Active Publication Date: 2022-08-02
CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD +1
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Problems solved by technology
[0004] At present, the portable vehicle emission measurement system (PEMS) can be used to detect the pollutant emissions of diesel vehicles under actual road conditions. However, this device is only suitable for the evaluation of exhaust pollutants during regulatory certification or random inspection, and cannot meet the real-time monitoring requirements for particulate matter and nitrogen oxides, and this device cannot be installed on machinery for long-term detection of exhaust pollutants
In addition, PEMS testing equipment is a precision measuring instrument, which is not yet suitable for harsh environments such as construction sites
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[0044] It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.
[0045] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
[0046] like figure 1 and figure 2 As shown, a simple vehicle-mounted emission test device for non-road diesel machinery includes a DCU controller, a data acquisition module, a CAN bus communication module, an engine EUC, a data storage module, an exhaust pipe, a wireless transmission module and a GPS module. The DCU The input end of the controller is connected to the data acquisition module 2 and the CAN communication module 8, the output end is connected to the wireless transmission module 11 and the GPS module 12, the DCU controller is also bidirectionally connected to the storage module 10, the CAN bus communication module 8 is connected to the engin...
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The invention provides a simple vehicle-mounted emission testing device and method for non-road diesel machinery. The method comprises the following steps: testing the mass flow of exhaust gas; testing the instantaneous power of the engine; testing the instantaneous NOx emission concentration; Flow and instantaneous NOx emission concentration to measure NOx emission mass flow and NOx specific emission; test the particulate matter mass concentration in exhaust gas; measure particulate matter emission mass flow and particulate matter through exhaust particulate matter mass concentration, engine instantaneous power and exhaust mass flow rate Specific emissions; time integration of the obtained off-road diesel machinery instantaneous particulate matter mass flow and NOx mass flow. The beneficial effects of the invention are: real-time acquisition of non-road diesel machinery particulate matter and nitrogen oxide emissions through model calculation.
Description
technical field [0001] The invention belongs to the technical field of vehicle emission testing, and in particular relates to a simple vehicle-mounted emission testing device and method for non-road diesel machinery. Background technique [0002] At present, the problem of mobile source pollution in my country has become increasingly prominent, and it has become an important source of air pollution. Especially in large and medium-sized cities such as Beijing, Shanghai, and Shenzhen, mobile sources have become an important source of fine particulate matter (PM). Due to the unique advantages of diesel engine in power and fuel economy, it has become an important part of motor vehicle powertrain, but the PM and NOx generated by its combustion working characteristics are much higher than other types of power plants. Diesel engines are generally used as power plants. The PM and NOx emissions brought by off-road diesel machinery are close to those of motor vehicles. [0003] At p...
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IPC IPC(8): G01M17/007G01D21/02
CPCG01M17/007G01D21/02
Inventor 谢振凯李孟良李勇王计广付铁强凌健张潇文齐松博
Owner CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD