| 摘要 |
<p>PURPOSE:To keep the top dead centers in the compression stroke of both front and rear cylinder bores constant irrespective of the inclination angle of a swash plate and improve the compression efficiency at the time of small capacity by setting a specific guide relation between the guide pin of a swash plate side and the guide hole of a rotary shaft side. CONSTITUTION:Front and rear shaft portions 4A, 4B forming rotary shafts are housed inside a pair of front and rear cylinder blocks 1, 6 housing a double- end piston 13. A guide bush 10 is slidably supported by the rotary shafts 4A, 4B and a swash plate 11 for reciprocatingly driving the double end piston 13 is supported by the guide bush 10. Further, a guide pin 11b is provided on the swash plate 11 and a guide holes 8a are provided on the rotary shafts 4A, 4B. Guide relations that the oscillation center of the swash plate 11 is placed on the reciprocating zone of the double end piston 13 and that the top dead center in the compression stroke of the rear cylinder bore 6a is in a defined position, are set between the guide pin and guide holes. Thereby, the top dead center in the compression stroke of the front cylinder bore 1c can be specified in a defined position.</p> |
