| 摘要 |
A lash adjuster oil-supplying device has an oil path formed within the hollow center of a camshaft of an overhead camshaft-type engine. An oil jet hole is formed in said camshaft which communicates with said oil path. A first oil passage extends from a cylinder head through the camshaft housing to the camshaft, and a second passage extends from the camshaft through the camshaft housing to a passage for supplying oil to lash adjusters, which is formed in the cylinder head. Oil enters the oil path within the camshaft from the first oil passage, and, after passing through the oil path, is supplied to the passage for supplying oil to lash adjusters through the second passage. A portion of the oil passing through the oil path is ejected through the oil jet hole to lower and regulate the oil pressure supplied to the lash adjuster, independent of engine speed. This prevents pump-up of the lash adjuster without using a special oil-pressure regulator. Also, air bubbles in the oil are also expelled through the oil jet hole to decrease the amount of air bubbles contained in the oil supplied to the lash adjuster, thus ensuring the reliability of the function of the lash adjuster, without the addition of a special air bubble-separating device.
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