Multi-cylinder engine oil pressure monitoring and protection system

Abstract

The invention relates to a multi-cylinder engine oil pressure monitoring and protection system, comprising a pressure sensor, an oil protector and at least two igniters, the first input end of the monitoring and protection circuit of the oil protector is connected to the ignition coil of the igniter primary Used to collect the engine speed signal, the second input end of the monitoring and protection circuit of the oil protector is connected to the pressure sensor, used to collect the oil pressure signal of the lubricating oil passage, the monitoring and protection circuit of the oil protector is used to receive the engine Speed ​​signal and engine oil pressure signal, compare the engine speed signal with the speed setting value, compare the engine oil pressure signal with the pressure setting value, and output the control signal to the flameout switch to control the engine flameout and shutdown. It can ensure that the engine will not be locked and damaged by moving parts such as the engine crankshaft due to lack of engine oil or too low lubricating oil pressure or poor lubrication.

Description

Technical field [0001] The invention relates to an engine protection device, in particular to a multi-cylinder engine oil pressure monitoring and protection system. Background technique [0002] When the engine is working, many transmission parts move relatively at high speed under a small gap, such as the crankshaft main journal and main bearing, crank pin and connecting rod bearing, cam journal and cam bearing, piston, piston ring and cylinder wall , Each movement pair and transmission gear pair of the valve mechanism. Although the working surfaces of these parts have been finely machined, they are bumpy when zoomed in. If these surfaces are not lubricated, strong friction will occur between them. The dry friction between the metal surfaces not only increases the power consumption of the engine and accelerates the wear of the working surface of the parts, but also may burn the working surface of the parts due to the heat generated by the friction, causing the engine to fail t...

AI Technical Summary

Problems solved by technology

The engine can run normally when the oil level is higher than the limit level of the oil sensor, but if the oil pump leaks or the lubricating oil channel is blocked, the engine crankshaft and other key lubricating parts cannot form an oil film or the oil film ruptures due to the low oil pressure, which will cause engine lubrication. Bad and locked, engine damage occurs

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