Suitable for Jianghuai heavy truck K6L pressure sensor 7001482C1

Technical introduction

The lubrication system is one of the important parts of the automobile engine. The oil in the oil pan is sucked out by the oil pump to form a certain oil pressure to provide lubricating oil for the crank-connecting rod mechanism and the valve train. When the engine is working, the lubrication system of the engine must have a certain pressure. Once the pressure is insufficient and the oil supply is insufficient, the crank-connecting rod mechanism and the valve train will form dry friction, which will cause great harm to the automobile engine. Therefore, When the engine is started, the oil pressure in the lubrication system can be grasped in real time through the oil pressure sensor. Once the pressure is too small, the information will be immediately fed back to the control system, and the control system can take measures to avoid damage to the engine.

Technical realization idea

The purpose of this technology is to provide an oil pressure sensor, which has the advantages of simple structure and convenient use. The technology adopts the following technical scheme: the oil pressure sensor consists of a compression nut, an elastic membrane, a base rotating pin, a left push rod, a rotating pin, a left fixed seat, a right push rod, an inner cavity, a right fixed seat, a left insulating seat, a left lug, a varistor rod, a right lug, a right insulating seat, a base, a sibu shell and an outer cavity. The shell is internally provided with an elastic membrane, which is compressed by a compression nut, and the compression nut is in threaded fit with the shell, and the elastic membrane divides the interior of the shell into an inner cavity and an outer cavity. The elastic membrane is provided with a base, and the base is provided with a hole. A left push rod is installed in the shell, one end of the left push rod is connected with the left fixed seat by a left rotating pin, and the other end of the left push rod is connected with the base by a base rotating pin. A right push rod is installed in the shell, one end of the right push rod is connected with the base by a base rotating pin, and the other end of the right push rod is connected with the right fixed seat by a left rotating pin. A varistor rod is installed in the shell, one end of the varistor rod is sleeved in the left insulating seat, and the other end of the varistor rod is sleeved in the right insulating seat. The two ends of the outer varistor rod are connected with a left lug and a right lug. Preferably, the elastic film is an elastic and soft film. Preferably, the resistance value of the varistor rod is variable under the action of external force.