Radiator cooling efficiency monitoring method
A cooling efficiency and radiator technology, applied in the testing of machines/structural components, instruments, measuring devices, etc., can solve the problems of diesel engine power and economy decline, harmful emissions increase, air temperature increase, etc., Achieve the effects of reducing test verification costs, enhancing robustness, and reducing false alarm rates
Active Publication Date: 2022-05-10
DONGFENG AUTOMOBILE COMPANY
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Problems solved by technology
The temperature of the fresh intake air will rise after passing through the supercharger, the temperature of the air entering the cylinder will rise, and the charging efficiency will decrease, which will reduce the power and economy of the diesel engine, increase the amount of harmful emissions, and may damage the diesel engine in severe cases
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[0019] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...
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The invention relates to a method for monitoring the cooling efficiency of a radiator, which calculates the efficiency of the radiator by collecting the inlet temperature, the outlet temperature and the environment temperature of the radiator so as to monitor the efficiency of the radiator in real time. Based on a supercharger outlet temperature model and an intake manifold temperature sensor, correction of various environmental conditions and vehicle conditions is added, the radiator efficiency monitoring precision is guaranteed, the fault diagnosis robustness is enhanced, and the false alarm rate is reduced. Meanwhile, the diagnosis control strategy is simple and complete, and the test verification cost is greatly reduced.
Description
technical field [0001] The invention relates to the technical field of OBD monitoring of National VI engines, in particular to a radiator cooling efficiency monitoring method. Background technique [0002] As a kind of power machinery, diesel engine has made outstanding contributions to the development of society with its strong power, high thermal efficiency and low fuel consumption, but at the same time, the exhaust emissions contain harmful gases and particles, which pollute the environment. With the continuous upgrading of my country's automobile emission standards, automobile emission regulations have become more stringent after entering the National VI emission stage, and the requirements for diesel engine emission technology are getting higher and higher. [0003] Existing diesel engines generally adopt supercharging and intercooling air intake to inhale more fresh air, improve the power and economy of diesel engines, and reduce harmful emissions such as NOx and parti...
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IPC IPC(8): G01M15/04G01M99/00
CPCG01M15/04G01M99/002
Inventor 华岳董波卢勇王善元孙哲吴家坤张勃李楚桥张孝杨勇杜雨停沈昊袁雨胡建华
Owner DONGFENG AUTOMOBILE COMPANY