■ optimize the design of the air port - the new air port design improves the gas mixing conditions, makes the combustion more sufficient, greatly improves the fuel consumption, and realizes the dynamic characteristics of low speed and high torque.<br>The valve train is more reasonable -- the valve system adopts the push rod structure, which makes the valve train more concise, low cost and easy to maintain. The push rod structure makes the gas distribution process more powerful and accurate,<br>The micro arc oxidation on the piston head has the effect of heat insulation, increasing the service life and improving the high temperature cylinder drawing problem of the engine.<br>■ crankshaft connecting rod needle roller - the imported lidoluo needle roller is adopted to strengthen the thickened bearing, enhance the bearing capacity, improve the reliability of the engine, reduce the engine noise and prolong the service life.<br>■ cylinder gasket - steel metal mattress is used to reduce the deformation and erosion of the heat engine cylinder bed, and improve the noise and reliability of the engine.<br>■ optimize the exhaust gas balance system -- the exhaust gas direction is changed to the cylinder head cover and double gear cover, which can effectively prevent oil injection. Cg250hx (water cooling) is equipped with a new technology pressure reducing valve as standard, which can protect the electric starting system and make it easier to start.<br>Clutch -- the clutch with six column and disc spring structure is adopted to improve the backup coefficient and reliability of the clutch; the clutch is more durable.<br>■ process improvement - the integral bearing press mounting and crankshaft hot mounting are adopted to improve the noise and instability caused by conventional press mounting and knocking, and greatly improve the product precision and service life<br>
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