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Description: |
| Abstract:
The invention relates to explosive-engines of the four-cycle compression type; and its object is to provide anew and improved gas engine which is simple and durable in construction, very effective in operation, and arranged to utilize the exhaust-pressure for actuating the exhaust-valve.
Claims:
1. In a gas-engine, a cylinder, a piston therein, an exhaust-valve, an auxiliary cylinder communicating with the main cylinder by two passages having a valved connection with each other, a piston in the auxiliary cylinder, and means for operating the exhaust-valve from the said piston, as set forth.
2. In a gas-engine, a cylinder, a piston there in, an exhaust-valve, an auxiliary cylinder communicating with the main cylinder by two communicating passages, one of said passages being opened at the end of the outstroke of the piston and the other at return stroke thereof, a valve controlling the communication between said passages, a piston in the auxiliary cylinder, and means for operating the exhaust-valve from said piston, as set forth.
3. A gas-engine having a cylinder, a piston reciprocating therein, an ad mission-valve for said cylinder, an exhaust-valve for said cylinder, means controlled by the exhaust-pressure in the cylinder for opening the exhaust valve previous to the completion of the outward stroke of the piston, said means comprising an auxiliary cylinder having a piston, a lever engaged by the piston-rod of said piston, the lever also engaging the valve-stem of the exhaust-valve, and a valve connection between said auxiliary cylinder and the main cylinder, as set forth.
4. A gas-engine having a cylinder, a piston reciprocating therein, an admission-valve for said cylinder, an exhaust-valve for said cylinder, and means controlled by the exhaust pressure in the cylinder for opening the exhaust-valve previous to the completion of the outward stroke of the piston, said means comprising an auxiliary cylinder having a piston, a lever engaged by the piston-rod of said piston, the lever also engaging the valve-stem of the exhaust-valve, a valve connection between said auxiliary cylinder and the main cylinder, and an exhaust controlled by the main piston in the main cylinder and leading from said auxiliary cylinder, as set forth.
5. In a gas-engine, a cylinder, a piston reciprocating therein, an exhaust-valve, an auxiliary cylinder having two chambers communicating with the main cylinder and having a valved communication with each other, a piston in one of the chambers of the auxiliary cylinder, and means for opening the exhaust valve from the piston of the auxiliary cylinder, as set forth.
6. In a gas-engine, a cylinder, a reciprocating piston in the cylinder, a spring-pressed exhaust-valve for the cylinder, an auxiliary cylinder having two chambers communicating with the main cylinder and having a valved communication with each other, a piston in one of the chambers of the auxiliary cylinder, and a pivoted lever with the ends of which the stem of the piston and the stem of the exhaust-valve engage, as set forth.
7. In a gas-engine, a main cylinder, a piston reciprocating in the cylinder, a spring pressed exhaust-valve opening inwardly into the cylinder, an auxiliary cylinder having two chambers from which ports lead into the main cylinder, a spring-pressed valve controlling communication between one of the chambers and the port leading from the other chamber into the main cylinder, a piston in the other chamber of the auxiliary cylinder, and a pivoted lever with the ends of which the stems of the piston and exhaust-valve engage, as set forth.
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