Method for Measuring Water-adding and Degassing Performance of Complete Vehicle Engine
An engine and engine cooling technology, applied in the automotive field, can solve problems such as engine overheating and cooling cycle interruption
Active Publication Date: 2016-05-04
BEIQI FOTON MOTOR CO LTD
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Problems solved by technology
However, when the infiltrated gas cannot be effectively discharged, air resistance will be formed in the cooling system and the coolant will be squeezed out, which is particularly detrimental to the cooling system. When the loss of coolant is serious, it will lead to interruption of the cooling cycle. When the air resistance is severe, it will cause the engine to overheat. At this stage, the industry only tests on the engine test bench for adding water and degassing the engine. There is no relevant test method after the vehicle is matched.
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[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0024] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.
[0025] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broa...
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The invention discloses a method for measuring water feeding degassing performance of a whole vehicle engine. The method comprises the steps of S1, measuring the once filling rate of the engine, S2, after the engine is cooled, fully feeding water into a compensation reservoir, arranging pressure and temperature sensors at the water inlet and the water outlet of the engine, and after the engine is turned on and a thermostat is turned on, controlling the engine to operate at rated power and then fully feeding water into the compensation reservoir, S3, measuring the first extinction time T1 of bubbles in the water supply hose of a radiator under the circumstance that a fan heater is not working, S4, measuring the second extinction time T2 of bubbles in the water supply hose under the circumstance that the fan heater is working, and obtaining the degassing time T1+T2, S5, measuring the anti-gas intake volume of the engine, and S5, comparing the once filling rate, the degassing time and the anti-gas intake volume with preset reference values, respectively, to determine the water feeding degassing performance of the whole vehicle engine. The measuring method is capable of measuring the water feeding degassing performance of the engine after whole vehicle assembly.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a method for measuring the water-adding and degassing performance of a vehicle engine. Background technique [0002] Automobile test is the most important method to verify the performance of automobiles, and plays an important role in the development and verification of automobiles. Among them, engine power is an important factor to measure the safety of automobile engines. When the engine is working, if the combustion pressure in the cylinder is high, high-pressure gas can easily infiltrate into the cooling system of the engine. This phenomenon is more serious in diesel engines, and the amount of infiltration can be Up to 0.3L / min. In addition, if the water pipe connection or somewhere in the cooling system is not sealed tightly, air may also seep in. Under normal circumstances, these infiltrated gases can be discharged from the water inlet. However, when the infiltrated ...
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IPC IPC(8): G01M15/00G01M17/007
Inventor 李京杰张宪安娜
Owner BEIQI FOTON MOTOR CO LTD