Method and equipment for measuring zero reference angle of diesel engine
A diesel engine and measurement method technology, which is applied in the direction of internal combustion engine testing, etc., can solve the problems of not being good enough and the difficulty of extracting cylinder pressure values, and achieve the effect of predicting accuracy
Pending Publication Date: 2022-01-14
DONGFENG OFF ROAD VEHICLE CO LTD
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Problems solved by technology
[0002] At present, many companies use the cylinder pressure extraction method to simulate engine excitation from the source, but how to quickly confirm whether the cylinder pressure extraction value is accurate in actual measurement is still a problem, especially whether the extracted reference angle phase is the real phase, and How to determine whether the crankshaft position corresponding to each cylinder pressure value is accurate from a transient point of view, there is no good method at present
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[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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. In addition, the technical features in each embodiment or a single embodiment provided by the present invention can be combined arbitrarily with each other to form a feasible technical solution. This combination is not restricted by the sequence of steps and / or structural composition mode, but it must be Based on the ability of those skilled in...
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The invention provides a method and equipment for measuring a zero reference angle of a diesel engine. The method comprises the following steps of punching a cylinder cover of the diesel engine, matching a corresponding sealing thread, installing a cylinder pressure sensor at the punching position of the cylinder cover, and sealing the sealing thread; an output signal of an engine crankshaft rotating speed sensor being inputted into a data collector, and a cylinder pressure sensor being connected with a combustion analyzer; connecting an output end of a combustion analyzer to a data collector, setting measurement parameters of a zero reference angle of the diesel engine, and adjusting engine calibration to extinguish a cylinder I of the engine; and measuring to obtain an engine rotating speed signal and cylinder pressure when the engine stably operates after the cylinder is extinguished, and obtaining the zero reference angle of the diesel engine according to the cylinder pressure. According to the method, accuracy of the cylinder pressure extraction experiment can be estimated, and the crankshaft position corresponding to each cylinder pressure can be positioned according to the zero reference angle of the engine.
Description
technical field [0001] The embodiments of the present invention relate to the technical field of diesel engines, in particular to a method and equipment for measuring a zero reference angle of a diesel engine. Background technique [0002] At present, many companies use the cylinder pressure extraction method to simulate engine excitation from the source, but how to quickly confirm whether the cylinder pressure extraction value is accurate in actual measurement is still a problem, especially whether the extracted reference angle phase is the real phase, and There is currently no good way to determine whether the crankshaft position corresponding to each cylinder pressure value is accurate from a transient point of view. Therefore, developing a method and equipment for measuring the zero reference angle of a diesel engine, which can effectively overcome the defects in the above-mentioned related technologies, has become a technical problem to be solved urgently in the industr...
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IPC IPC(8): G01M15/10
CPCG01M15/10Y02T10/40
Inventor 刘鹏洪健陈华夏祖国熊锋
Owner DONGFENG OFF ROAD VEHICLE CO LTD