| 摘要 |
An internal combustion engine including a housing defining a combustion chamber, a piston movable within the housing, a port in the housing opening into the combustion chamber, a tube within the port having a free end terminating within the port closely adjacent the combustion chamber and an insulator on the exterior of the tube whereby heat flow from the tube to the housing is minimized to preclude thermal distortion thereof in the vicinity of the port.
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