Lubrication system for four-stroke engine
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United States of America Patent
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Mar 21, 2017
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N/A
app pub date -
Dec 12, 2014
filing date -
Jun 15, 2012
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Abstract
An engine includes an oil pan used for storing lubricating oil, a crankcase, a cam box, a rocker, and a distribution chamber used for separating oil & gas mixture into oil mist and liquid oil. A lubricating system comprises: the oil pan and the crankcase are communicated through an oil supply passage, and a one-way valve is disposed in the oil supply passage; the crankcase and the distribution chamber are communicated through a first oil conveying passage, and a one-way valve is disposed in the first oil conveying passage; the distribution chamber and the cam box are communicated through a second oil conveying passage; the cam box and the rocker chamber are communicated through a third oil conveying passage; the rocker chamber and the crankcase are communicated through at least one oil return passage, and a one-way valve is disposed in the oil return passage.
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