Engine correct time angle measuring device and detection method
An angle measuring device and engine technology, applied in measuring devices, instruments, etc., can solve problems such as inaccurate signals and large angle measurement deviations, and achieve the effects of improving measurement accuracy, reducing labor costs, and saving assembly time
Inactive Publication Date: 2017-02-01
江西志骋汽车有限责任公司
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Problems solved by technology
At the same time, because the read signal is not accurate enough, the angle measurement deviation is large
Method used
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Embodiment
[0029] Embodiment: When the crankshaft 6 is rotated, the piston 5 can be driven to move up and down, thereby driving the displacement meter 1 to deflect, and the displacement distance of the piston 5 corresponding to the rotation angle of the crankshaft 1 can be read by the displacement meter 1 . When the piston 5 moves to the top dead center position, the scale indicated by the displacement meter 1 is also at the maximum value within the rotation period of the crankshaft 6, and the pointer 4 is bent to the 0 scale of the angle disc 3, and the 0 scale of the angle disc 3 is the piston. 5 top dead center reference point. Adjust the installation direction of the displacement meter 1 so that the probe of the displacement meter 1 is perpendicular to the intake valve spring mounting seat 8, drive the intake camshaft 7 to rotate for one cycle, find the maximum lift position of the displacement meter 1, and read the angle of the angle plate 3 , this angle is the maximum angle of inta...
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The invention discloses an engine correct time angle measuring device and detection method. A lower end of an installation support rack is provided with a base plate, a lower end of a measuring rod of a displacement meter perpendicularly contacts with a top face of a piston, a pointer is fixed at one side of an engine, a tip of the pointer points to a graduation of an angle scale, and the angle scale is mounted on a shaft end of a crankshaft. A graduation of 0 on the angle scale is a piston top dead centre reference point, an installation direction of the displacement meter is adjusted in such a way that the measuring rod of the displacement meter is perpendicular to an air valve spring installation seat, a camshaft is driven to complete one rotation cycle, a maximum life range position of the displacement meter is found, and an angle of the angle scale is read as a correct time maximum angle. The displacement meter perpendicularly contacts with a top part of the piston via a probe, the probe can move up and down along with the piston, a distance that the piston moves can be read via the displacement meter, an angle through which the crankshaft rotates can be read via the pointer, and driving components can be subjected to deviation correction operation according to a deviation value after correct time signal detection is completed.
Description
technical field [0001] The invention relates to the technical field of automobile engine assembly, in particular to a detection device and a detection method suitable for measuring the timing drive angle of the engine. Background technique [0002] The timing drive system is the heart of the engine, which ensures the correct opening timing of the intake and exhaust valves, thereby controlling the engine's good combustion state and strong performance output. The timing drive system is a linkage system. The engine is usually based on the top dead center of the piston, and the installation angle of the intake and exhaust machinery is arranged to develop and design the timing drive components. However, there are manufacturing errors in the components, which cannot be effectively adjusted during the assembly process. Confirm whether the timing system angle is consistent with the design value. After the engine is assembled, use an oscilloscope to compare the signal of the camshaf...
Claims
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Login to View More IPC IPC(8): G01B21/22
CPCG01B21/22
Inventor 赵昌鹏郑永明彭奕平王虹宇
Owner 江西志骋汽车有限责任公司