Magnetic induction device for engine ignition testing

Abstract

A magnetic induction device for engine ignition testing comprises a magnetizer and a coil winding wound outside the magnetizer, and further comprises a signal amplification device arranged on one end face of the magnetizer and used for receiving and amplifying magnetic field signals collected and processed by the coil winding and the magnetizer. A magnetic field collected and processed by the coil winding and the magnetizer is effectively amplified, the intensity of induction signals is greatly enhanced, the induction distance is increased, meanwhile, capacitors, resistors and the like are reasonably arranged, amplified signals are subjected to bias, adjustment and other processing, and the induction signals are effectively prevented from being weak within the distance range of 250 mm.

Description

technical field [0001] The invention relates to a generator ignition test technology, in particular to a magnetic induction device for an engine ignition test. Background technique [0002] In the engine production line, in order to ensure that each engine can be qualified off the assembly line, it is necessary to conduct a cold test or an independent ignition test on the engine during the assembly process or after the assembly to ensure that the engine can be qualified for the assembly line. With the continuous improvement of engine technology, more and more engine manufacturers choose ignition coils with built-in amplifiers, and this kind of ignition coils need to be equipped with a set of magnetic induction sensors to sense the high-voltage magnetic field of the ignition coils during cold tests or independent ignition tests. Changes to test the performance of engine spark plugs. [0003] At present, the commonly used magnetic induction method mainly uses a magnetic condu...

AI Technical Summary

Problems solved by technology

However, this method has the following two main disadvantages: on the one hand, the commonly used magnetic induction sensor has a relatively short sensing distance (about 0-2mm), and is sensitive to the distance; on the other hand, the magnetic field on the surface of the ignition coil is unevenly distributed

In view of the above two reasons, the magnetic induction sensor is required to have very high requirements on the position during installation, so it has caused great difficulties in the structural design, installation and debugging of the cold test bench and independent ignition test bench

When designing the cold test bench, it is first necessary to consider the spatial layout of the magnetic induction sensor (the magnetic induction sensor needs to be as close as possible to the surface of the ignition coil), which greatly increases the design difficulty of the cold test bench; in addition, when the magnetic induction sensor is installed, Due to the high position requirements, it takes a lot of manpower and material resources to adjust and verify the position of the magnetic induction sensor

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