| 摘要 |
<p>PURPOSE:To reduce the extent of intake pulsation attributable to a fact that an evaporator is resonated and a noise is produced in a casing, without installing any separate muffler. CONSTITUTION:An inlet chamber 3a, where a coolant out of an evaporator is inhaled via an inlet passage 3c, is formed in a cylinder head 3 being connected to the outer end of a cylinder block 1 as holding a valve plate between. In addition, a sub-inlet chamber 1c combinedly installed in the axial direction of the inlet chamber 3a is installed in an central area of the cylinder block 1 and the valve plate. In this constitution, each axial length L of the inlet chamber 3a and the sub-inlet chamber 1 is set to the length conformed to a resonant frequency of the evaporator in order to reduce the inlet pulsation resonating this evaporator.</p> |
