This system is made up of three parts: compound gear air compressor parameters design module, typical compressor-part CAD module and typical compressor-part CAM module.
复合轮齿空气压缩机CAD／CAM系统由三大模块构成：复合轮齿机构参数化设计模块、压缩机典型零件CAD模块、压缩机典型零件CAM模块。
C. Blow-back through the scavenge air ports, owing to an incorrectly adjusted exhaust cam disc or large resistance in the exhaust system(back pressure not exceed 300 mm wc)
由于排汽凸轮盘不正确的定时或排汽系统背压过大（背压不能超过300毫米水柱）而导致燃气通过扫气口倒流。
D is CAM wheel pole driving, spring automatic restore structure, tight structure, reasonable design, stable driving, dust discharge and dependable air lock.
D为凸轮连杆传动，弹簧自动复位机构，结构紧凑、设计合理、运转平稳，卸灰、锁气可靠。
It is found that the displacement, velocity and acceleration of air valve are unsymmetrical although the shape of CAM is symmetrical.
计算结果表明，对称凸轮会得到一个不对称的气门运动规律。
It is found that the displacement, velocity and acceleration of air valve are unsymmetrical although the shape of CAM is symmetrical.
计算结果表明，对称凸轮会得到一个不对称的气门运动规律。
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