Four-in-one intelligent engine oil sensor

Abstract

The invention discloses a four-in-one intelligent engine oil sensor. The four-in-one intelligent engine oil sensor comprises a sensor body mounted in the position of an engine oil level gauge, and a measurement signal processing circuit. The four-in-one intelligent engine oil sensor has the beneficial effects that firstly, the sensor is compact in structure and convenient to mount and replace; secondly, the sensor does not have a mechanical moving structure, usage abrasion caused by long-term floating is eliminated, the service life is effectively prolonged, and the sensor failure phenomenon caused by clamping stagnation hidden danger is avoided; thirdly, the sensor is wide in application range and can be directly used for existing gasoline engine oil measuring and alarming systems without being modified; fourthly, due to the fact that a circuit part is completely isolated from fuel oil, potential safety hazards caused by electronic device damage are avoided, and the sensor is safer and more reliable than traditional products; fifthly, the functions of four traditional parts such as a flame rollout switch, an engine oil alarming device, an engine oil sensor body and the engine oil level gauge are integrated, and miniature design is facilitated; and sixthly, the sensor adopts the single-chip microcomputer principle, and infinite functions can be given to the sensor.

Description

technical field [0001] The invention relates to a sensor, in particular to a four-in-one intelligent engine oil sensor. Background technique [0002] At present, the main gasoline engine oil sensors on the market mainly include mechanical oil sensors and reed switch oil sensors. [0003] The main principle of the mechanical oil sensor is to install an oil level float with a probe in the oil tank. The difference in the oil level in the oil tank will cause the relative position of the oil level float in the oil tank to change. The oil level float is connected to the other through a lever One end is connected to the terminal, the lead wire is connected to the oil alarm, and the oil alarm is connected to the flameout line of the igniter. When the engine oil quantity is less than the set value, when the oil sensor probe contacts the engine shell, the sensor will give the alarm a corresponding signal. Ground signal, the alarm receives this signal to control the internal electroni...

AI Technical Summary

Problems solved by technology

[0003] The main principle of the mechanical oil sensor is to install an oil level float with a probe in the oil tank. The difference in the oil level in the oil tank will cause the relative position of the oil level float in the oil tank to change. The oil level float is connected to the other through a lever One end is connected to the terminal, the lead wire is connected to the oil alarm, and the oil alarm is connected to the flameout line of the igniter. When the engine oil quantity is less than the set value, when the oil sensor probe contacts the engine shell, the sensor will give the alarm a corresponding signal. Ground signal, the alarm receives this signal to control the internal electronic switch to open, connect the flameout wire to the ground, and the engine is turned off; the disadvantages of this type of sensor are: 1. The oil float and probe are soaked in engine oil for a long time, which is prone to poor contact and aging 2. Due to the mechanical method used, it is easy to cause wear and poor contact during long-term use, resulting in inaccurate alarms and engine damage; 3. Since the sensor is installed in Inside the engine, when a fault occurs, it is necessary to replace and analyze the fault situation, it is necessary to dissect the box, which is time-consuming and labor-intensive, and it is easy to cause damage to other parts of the engine and cause unnecessary losses

4. The installation locations are scattered, which is not convenient for miniaturization design. Four locations are required to install the oil sensor, oil alarm, flameout switch, and oil dipstick.

One end of the reed switch is connected to the ground, the other end is connected to the external lead wire, the lead wire is connected to the oil alarm, and the oil alarm is connected to the flameout line of the igniter. When the engine oil volume is less than the set value, the inside of the magnetic ring float The magnet attracts the dry reed switch and conducts, the sensor gives the alarm a signal to the ground, and the alarm receives this signal to control the internal electronic switch to open, connect the flameout line to the ground, and the engine is turned off; the disadvantages of this type of sensor are: 1. The magnetic ring float and reed switch are soaked in engine oil for a long time, which is prone to problems such as poor contact and aging, and has a limited service life; 2. Due to the use of the reed switch oil float method, it is prone to oil sticking 3. Since the sensor is installed inside the engine, it needs to be dissected to replace and analyze the fault after a fault occurs, which is time-consuming and labor-intensive, and easy Cause damage to other parts of the engine, resulting in unnecessary losses

4. The installation locations are scattered, which is not convenient for miniaturization design. Four locations are required to install the oil sensor, oil alarm, flameout switch, and oil dipstick.

Images