Method and device for measuring high-pressure oil pump camshaft speed fluctuation
A high-pressure oil pump and speed fluctuation technology, which is applied in the field of high-pressure oil pump camshaft speed fluctuation measurement system, can solve the problems of speed fluctuation, low efficiency, time-consuming and laborious, etc., and achieve the effects of high measurement accuracy, simple device structure and simple method
Active Publication Date: 2021-05-04
HENAN DIESEL ENGINE IND
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Problems solved by technology
For multi-cylinder diesel engines, there are often failures such as uneven operation of each cylinder, uneven oil supply of the front and rear pumps, fluctuation of speed, and coupling separation. To solve such failures, the usual method is to stop the engine and disassemble the oil supply system and gear system Installation inspection to determine the source of the fault is time-consuming, labor-intensive, and inefficient, which is not conducive to the production and operation activities of diesel engine manufacturers
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specific Embodiment I
[0021]Specific embodiment 1, assuming that the diesel engine speed is 1800r / min, the transmission ratio of the gear mechanism is 2:1, through angle mark instrument I4, angle mark instrument II6, rotational speed sensor I18, rotational speed sensor II19 and rotational speed sensor III20 Synchronous collection within 10min The speed signals of the crankshaft 1, the high-pressure oil pump camshaft 23, the drive shaft 8, the front pump camshaft 9, and the rear pump camshaft 10, the steps for obtaining the speed fluctuations are: synchronously collecting by the angle marker I4 and the angle marker II6 The speed signal of crankshaft 1 and high-pressure oil pump camshaft 2310min; calculate the speed ratio of crankshaft 1 and high-pressure oil pump camshaft 23 collected by angle marker Ⅰ4 and angle marker Ⅱ6 at each time, and compile it into a curve, and analyze it according to the curve Changes in the speed ratio, if the speed ratio is greater than 2.06:1 or less than 1.94:1 at certai...
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The purpose of the present invention is to provide a high-pressure oil pump camshaft speed fluctuation measurement method and device, which is characterized in that: the crankshaft and the input camshaft of the multi-cylinder combination pump connected in series are driven by a gear set; The rotation speed of the camshaft at the input end of the cylinder combination pump is obtained to obtain the rotation speed fluctuation; at the same time, the rotation difference between the crankshaft, the input end camshaft of the series multi-cylinder combination pump and the connecting shaft between the series multi-cylinder combination pump is detected by the detection unit, and the Get the motion state of the above system. The invention has the advantages of simple and reliable method, and at the same time, the device of the invention has simple structure, high measurement accuracy and is suitable for production use.
Description
technical field [0001] The invention belongs to the technical field of diesel engine testing, and specifically designs a high-pressure oil pump camshaft rotation speed fluctuation measurement system and test method for multi-cylinder combined pumps used in series. Background technique [0002] Diesel engines are widely used in various fields due to their excellent thermal efficiency and power performance. Among them, the "heart" of diesel engines is high-pressure oil pumps, which are the most important components in the fuel supply system of diesel engines. Whether the high-pressure oil pump works normally plays an important role in the operation of the entire diesel engine. The source of driving force of the diesel engine high-pressure oil pump is the crankshaft, which transmits the speed to the camshaft of the high-pressure oil pump in a certain proportion through the intermediate gear set in the gearbox to drive the high-pressure oil pump to work. Because of the large nu...
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IPC IPC(8): F02M65/00
CPCF02M65/00
Inventor 姬仕强杨冉郑蒙蒙郭建超
Owner HENAN DIESEL ENGINE IND