Engine protective device for detecting engine oil pressure
A technology of oil pressure and protection device, applied in the direction of pressure lubricated safety device, etc., can solve the problems of loss, lack of protection device, engine damage, etc., and achieve the effect of ensuring reliable operation, high reliability and easy installation
Inactive Publication Date: 2013-05-08
李风
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Problems solved by technology
[0002] At present, the presence or absence of engine oil mainly depends on manual identification, and there is no effective protection device
When the engine is running due to oil leakage or damage to the oil pump, the engine will run without oil lubrication. At this time, if there is no effective protection device or online identification device, it will cause great damage to the engine. Watts, heavy ones will scrap the engine crankshaft
Therefore, when the engine is running, attention must be paid to the oil pressure of the engine, otherwise, once a zero pressure failure of the engine oil occurs, it will cause great losses
So far, no engine protection device that detects oil pressure has been found
Method used
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Embodiment 1
[0013] Example 1: The positive pole of the switch power supply is connected to one end of the relay J coil, the other end of the relay J coil is connected to the anode of the thyristor T, and the cathode of the thyristor T is connected to the power supply through the normally closed contact inside the oil pressure sensor YJ The negative pole (ground) of the negative pole (ground) constitutes a circuit; the relay J connects the engine electric flameout switch through the normally open contact J1 and forms an alarm device through the drop-down resistor R2 and the light-emitting diode D2, and the relay J forms a self-holding circuit through the normally closed contact J2; the thyristor The gate of T is connected to the D+ terminal of the generator through the Zener diode ZD and forms an oil-free detection and protection circuit through the voltage-dropping resistor R1 and the light-emitting diode D1.
[0014] The relevant design parameters are:
[0015] Relay J contact capacity >...
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The invention discloses an engine protective device for detecting engine oil pressure. The engine protective device for detecting the engine oil pressure is composed of a power circuit, an alarm signal device, a self-hold circuit, and an engine-oil-exhausted detection protective circuit. The power circuit is formed by a relay (J), a thyristor (T), and an engine oil pressure sensor (YJ), a switch power positive pole and a switch power negative pole. The alarm signal device is formed by the relay (J), a normally-open contact (J1), a dropping resistor (R2) and a light-emitting diode (D2). The self-hold circuit is formed by the relay (J) and a normally-closed contact (J2). The engine-oil-exhausted detection protective circuit is composed of the thyristor (T), a voltage-stabilizing diode (ZD), a dropping resistor (R1) and a light-emitting diode (D1). When engine oil leakage or engine oil pump failure happens in the engine in the process of operation, the engine protective device can send flameout instructions to the engine or to the alarm device, and therefore the engine can shut down automatically and stop working, and the engine can be prevented from being damaged. In addition, the engine protective device is simple in structure, high in reliability, easy to install, especially suitable for being installed on an automobile engine or an unattended engine, and the engine protective device only has four externally-connected wires.
Description
technical field [0001] The present invention relates to a mechanical protection device, more specifically, the present invention relates to an engine protection device. Background technique [0002] At present, the presence or absence of engine oil mainly depends on manual identification, and there is no effective protection device. When the engine is running due to oil leakage or damage to the oil pump, the engine will run without oil lubrication. At this time, if there is no effective protection device or online identification device, it will cause great damage to the engine. Watts, heavy ones will scrap the engine crankshaft. Therefore, when the engine is running, attention must be paid to the oil pressure of the engine, otherwise, once a zero pressure failure of the engine oil occurs, great losses will be caused. So far, no engine protection device for detecting oil pressure has been found. Contents of the invention [0003] The purpose of the present invention is t...
Claims
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IPC IPC(8): F01M1/20
Inventor 李风
Owner 李风