| 摘要 |
An air regulated two cycle engine is disclosed which is designed to meet with the problems of a conventional two cycle engine, a poor fuel economy, an unsatisfied capability to limit pollution and a failure to produce a desired torque output, arising from the fact that a considerable portion of fuel gas is lost though the exhaust port that remains opened during a compress and admit stroke time interval of the engine. The improved engine is provided with an air intake port that is selectively opened by the piston moving to effect a compress and admit stroke to draw air from an outside atmosphere into the cylinder inside space. The engine that may otherwise be of a conventional design forces air so taken to transfer into the combustion chamber in a fuel transfer stroke time interval and then to regulate an exposition of fuel gas in the combustion chamber so as to maintain fuel gas unburnt therein to lie always in a layer substantially remote from the exhaust port. The piston may be formed in a piston skirt with a slit that provides an air passage between the air intake port and the cylinder inside space. Preferably, the air intake port is provided with an air flow regulating valve that may act to adjust the torque output of the engine, and an air cleaner.
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