| 摘要 |
<p>A two cycle internal combustion engine is provided having a decompression slot (56) in order to ease engine starting. The engine utilizes a transfer port induction system in which a transfer port (40) is formed in the wall of the cylinder assembly in communication with the enclosed crank case (44) cavity. Extending from the top of the generally diametrically opposed transfer ports (40) are a pair of recessed decompression slots (56) extending from the upper most end of the transfer port (40) toward the closed end of the cylindrical cavity formed in the cylinder assembly (20). Each of the decompression slots (56) have a circumferential width W which is substantially constant. The radial of dimension D varies generally linearly from a maximum depth at the intersection of decompression slot (56) and transfer port (40) to a minimum depth at the uppermost end of the decompression slot (56).</p> |
