| 摘要 |
A cylinder head with single colander valve per cylinder for internal combustion engines (IC engine) and the like is provided. The single colander valve per cylinder has significantly enlarged valve open area and remains fully open at the end of the exhaust stroke and at the beginning of the intake stroke. The volumetric efficiency of IC engines, therefore, is significantly improved. The cylinder head with single colander valve per cylinder and support members of the present invention is practical because of the following features: single colander valve per cylinder has light weight and operates under low temperature. Some of advantages associated with these features are the following: (a) single colander valve has greater durability, (b) the compression ratio of IC engines may be raised, (c) dynamic effects on the valve train are reduced, (d) the speed of IC engines is increased, (e) the polluting emission is reduced, and (f) the fuel economy is improved. Also colander valves, which have different combinations of face-down aperture(s) and/or face-up aperture(s) disposed on the heads of the colander valves, are provided for IC engines, which have at least two valves per cylinder, and the like. Overall the present invention improves the comprehensive performance of IC engines and the like.
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