Valve distribution mechanism<br>1) The function of the gas distribution mechanism;<br>2) Analysis of the concept, function, and influencing factors of charging coefficient;<br>3) The composition, type, structure, and working principle of the gas distribution mechanism;<br>4) Adjustment method for valve clearance;<br>5) The concept and function of gas timing;<br>6) Understand typical mechanisms of variable valve timing;<br>7) Installation of valve distribution mechanism;
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