Combustion chamber drain system
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsShawn K. Martin, William A. Garnett, William W. McCrory
Life of this patent
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Abstract
An apparatus for quickly and virtually complete purging of seawater from combustion chambers of an outboard engine that has been submerged or a submersible outboard engine. A poppet valve is incorporated in the combustion chamber portion of the engine head. The valve has discharge ports radially disposed around its periphery so that when the poppet valve is pneumatically operated, the ports permit the discharge of entrapped water from the combustion chamber as the engine is turned over.
Claims8
A combustion chamber drain system for elimination of water trapped in the combustion chamber of an internal combustion engine having a block, said system comprising:
- means for sealing off the engine block to permit combustion in said engine, said means having one combustion chamber portion aligned to join with an opposite combustion chamber portion in said block to create a complete and functional combustion chamber, and having one threaded hole extending through said means to receive a threaded sparkplug, and a second adjacent threaded hole extending through said means to provide a passage between the combustion chamber portion therein and the environment external to said engine;
- threaded means for preventing exhaust gas discharge from said engine during engine operation and for providing a sealable passage for releasing water trapped in said engine after said engine is flooded and removed from a flooding environment, said means threadably inserted into said second threaded hole of said block sealing means;
- means for operating said engine without combustion therein in order to remove said trapped water through said sealable passage;
- and
- means for powering said preventing and releasing means.
A combustion chamber drain system for elimination of water trapped in the combustion chamber of an internal combustion engine having a block, said system, comprising:
- an engine head having one combustion chamber portion aligned to join with an opposite combustion chamber portion in said block to create a complete and functional combustion chamber, and having a threaded port extending through said head to receive a threaded sparkplug, and a second adjacent threaded port extending through said head to provide a passage between the combustion chamber portion therein and the environment external to said engine;
- a threaded high-pressure poppet-style drain valve for preventing exhaust gas discharge from said engine during engine operation and for releasing water trapped in said engine after said engine is flooded and removed from a flooding environment, said drain valve threadably inserted into the threaded hole of said head;
- an engine cranking apparatus for operating said engine without combustion therein;
- and
- a means for powering said drain valve to permit discharge of combustion chamber entrapped water therethrough as said engine is cranked.
Dependencies are inferred from the claim text.