Enhanced actuating cam sensor for automobile

Abstract

The invention discloses an enhanced actuating cam sensor for an automobile. The enhanced actuating cam sensor comprises a shell, a plug pin arranged at the upper end of the shell, an installation hole arranged on one side of the shell, and a plug arranged at the lower end of the shell. A Hall tube and a magnet are arranged inside the shell. The shell is internally provided with a TLE 4984C chip having the TPO function. A magnetism-reduction iron core is sleeved onto the magnet. The sensor is provided with the Hall tube with the TOP chip. When the enhanced actuating cam sensor is powered up, whether a user is currently facing convex teeth or concave teeth can be detected even when a target wheel does not rotate. A magnetism-reduction sleeve is arranged on a built-in magnet, so that the magnetic flux density can be effectively dispersed. Meanwhile, the magnetic field is reduced. On the premise that the length of the magnet is long enough, the requirements of high temperature resistance can be met. At the same time, the sensitivity of the sensor is improved.

Description

technical field [0001] The invention relates to an automobile sensor, in particular to an enhanced active cam sensor for automobiles. Background technique [0002] In the automotive electronic control system, the cam sensor is used to collect the position signal of the gas distribution cam and input it to the ECU, so that the ECU can identify the top dead center of the cylinder compression, so as to perform sequential fuel injection control, ignition timing control and deflagration control. And the cam sensor in the prior art just can't detect whether it is a convex tooth or a concave tooth when the target wheel does not rotate, and secondly because the chip often has a fixed value to the magnetic field strength of the magnet, but because the sensor is installed on the engine In general, the temperature of the working environment is high, so the temperature resistance requires a contradiction in the magnetic strength, so a technical solution that can solve the above problems...

AI Technical Summary

Problems solved by technology

And the cam sensor in the prior art just can't detect whether it is a convex tooth or a concave tooth when the target wheel does not rotate, and secondly because the chip often has a fixed value to the magnetic field strength of the magnet, but because the sensor is installed on the engine In general, the working environment temperature is relatively high, so the temperature-resistant requirement of magnetic strength forms a contradiction, so a technical solution that can solve the above problems is urgently needed

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