| 摘要 |
<p>PURPOSE:To improve a sound muffling effect by forming a route for conducting exhaust gas to exhaust outlet with two pieces of rib and causing high-frequency components to be mutually intervened. CONSTITUTION:High-pressure coolant introduced into the rear high-pressure chamber, flows into the discharge chamber 68 through small orifice 70 and is discharged to coolant cycle from exhaust outlet 64 through a discharge route formed by two pieces of rib 66, 66. Therefore, coolant in the high-pressure chamber 60 is once conducted into the discharge chamber 68 through small orifice 70 and coolant in the discharge chamber 68 is discharged from the exhaust outlet 64 after passing through a route connecting the neighbor of discharge chamber center to the exhaust outlet 64. Under this constitution, the high-frequency components are cuased to be mutually intervened and the high-frequency components representing a discharge pressure artery are reduced. Thus it is possible to improve the sound-muffling effect.</p> |
