Engine lubrication system efficiency detection system

The utility model provides an engine lubrication system efficiency detection system. The engine lubrication system efficiency detection system comprises an oil tank, an oil bump, a filter, a reflux valve, a one-way valve and a flow meter. The oil tank is used for storing lubricating oil. The oil pump is connected with the oil tank through an oil pipe and pumps the lubricating oil from the oil tank. The filter is connected with the oil pump through an oil pipe and filters the lubricating oil pumped by the oil pump. The reflux valve is connected with the filter through an oil pipe, controls oil pressure of the lubricating oil passing through the reflux valve and outputs the lubricating oil with set oil pressure. The one-way valve is respectively connected with the reflux valve and an engine main oil passage through oil pipes. The flow meter is arranged in an oil passage used for connecting the engine main oil passage and the one-way valve and meters the flow rate of the lubricating oil conveyed by the one-way v