Detector and detection method for electromagnetic valve of automobile automatic transmission

Abstract

The invention relates to the technical field of automobile maintenance and detection equipment, in particular to a detector and a detection method for an electromagnetic valve of an automobile automatic transmission. The detector is characterized in that: an oil tank is fixed at the bottom of a chassis; the lower part of the right side of the oil tank is provided with an oil temperature heater; a pipeline connecting oil return chamber is formed at the center position of the upper part of the oil tank; the upper part of the oil return chamber is provided with an oil path transition plate; the upper part of the oil path transition plate is provided with an electromagnetic valve adapting base; the upper part of the electromagnetic valve adapting base is provided with an electromagnetic valve to be detected; the bottom of the electromagnetic valve to be detected is provided with a pipeline which is connected with a pressure sensor by passing through the oil path transition plate; one end of a pipeline tap at the bottom of the electromagnetic valve to be detected is connected with an oil pressure regulating valve; the lower part of the oil pressure regulating valve is connected with the output end of an oil pump; the input end of the oil pump is connected with the input end of a safety valve on the oil tank; the electromagnetic valve to be detected is provided with a PWM (Pulse-Width Modulation) power amplifying circuit B; the oil pressure regulating valve is provided with a PWM power amplifying circuit A; the heater is provided with a relay; and the oil pump is provided with a frequency converter. A power chip has the functions of short circuiting, overcurrent thermal protection and the like.

Description

[technical field] [0001] The invention relates to the technical field of automobile maintenance detection equipment, in particular to a detection equipment and a detection method for a solenoid valve of an automatic transmission of an automobile. [Background technique] [0002] The current automatic transmission has developed into the era of six-speed popularization. Most of the new automatic transmission shift control is through the solenoid valve to directly control the clutch work. The wear and tear of the solenoid valve often causes the transmission shift shock or even skids and burns the automatic transmission. However, due to the complex structure and precision of the solenoid valve that cannot be disassembled and inspected, the detection of the performance of the solenoid valve has become a blind spot and difficult point in the maintenance of automatic transmissions. After checking, there is currently no detection device for the solenoid valves of automatic transmissio...

AI Technical Summary

Problems solved by technology

[0002] The current automatic transmission has developed into the era of six-speed popularization. Most of the new automatic transmission shift control is through the solenoid valve to directly control the clutch work. The wear and tear of the solenoid valve often causes the transmission shift shock or even skids and burns the automatic transmission. However, due to the complex structure and precision of the solenoid valve, which cannot be disassembled and inspected, the detection of the performance of the solenoid valve has become a blind spot and difficult point in the maintenance of automatic transmissions. After investigation, there is currently no detection device for solenoid valves of automatic transmissions in China.

Images