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Description: |
| Abstract:
My invention relates to mechanism for controlling the operation of internal combustion engines, such as gas and gasolene engines and the like, and my object is to provide an improved organization for use in engines of the type in which the supply of fuel to the engine is automatically shut off when the means for causing its combustion in the engine is made inoperative, so that the engine may be controlled from the igniting device without loss of fuel. This result is effected in engines of this type by providing mechanism which operates automatically upon the explosion of a charge in the cylinder to open the exhaust valve to permit the escape of the explosion products, the valve remaining closed and retaining the charge in the cylinder in case it is not exploded. As the pressure due to the presence of the unexploded charge in the cylinder prevents a fresh charge from being drawn in, it follows that there is no consumption of fuel while the igniting device remains inoperative. Heretofore in engines of this type it has been customary to provide mechanism in which the force of the explosion in the main or an auxiliary cylinder as exerted directly upon the exhaust valve to open it. Instances of such arrangements are afforded in my prior patents 726,731 and 743,915, issued April 28, 1903, and November 10, 1903, respectively.
The object of my present invention is to provide an organization in which the force for opening the exhaust valve is derived through another channel, the controlling mechanism that responds to the explosion of a charge in the cylinder merely acting to direct the valve opening force, and to make it effective or leave it ineffective depending upon the occurrence or non-occurrence of the explosion.
Claims:
1. In an internal combustion engine, the combination with the main cylinder and the piston therein, of an exhaust valve, a constantly reciprocating rod normally out of cooperative relationship therewith and having formed thereon a cam surface, a member adapted to be moved transversely into the path of said cam surface to shift the rod into cooperative relationship with said valve, and mechanism controlling said member responsive to each explosion in the engine cylinder.
2. In an internal combustion engine, the combination, with the main cylinder and the piston therein, of an exhaust valve, a constantly operating rod normally out of cooperative relationship therewith, a piston actuated roller adapted to be moved transversely into the path of movement of said rod and on which the latter is adapted to ride to establish said cooperative relationship, and an auxiliary cylinder in which said piston of the roller operates and which communicates with the main cylinder.
3. In an internal combustion engine, the combination, with the main cylinder and the piston therein, of an exhaust valve, a constantly operating rod normally out of cooperative relationship therewith, an eccentric for operating said rod, a member adapted to be projected across the path of said rod, a shoe on said rod which rides on said member when the latter is so projected, and shifts said rod into operative relation with said valve, and fluid pressure mechanism controlled by explosions in the main cylinder for operating said member.
4. In an internal combustion engine, the combination with the main cylinder and the piston therein connected with the usual crank shaft, of an exhaust port, a valve therefor mounted on a valve stem, a reciprocating valve rod extending from said shaft to said valve stem, but normally out of engagement therewith an auxiliary cylinder in communication with said main cylinder, a piston in said auxiliary cylinder adapted to be moved when the pressure in the main cylinder exceeds a predetermined amount, a shoe on said reciprocating valve rod, and a part adapted to be moved by said auxiliary piston into the path of movement of said shoe, whereby the reciprocating valve rod is thrown into engagement with said valve stem.
5. In an internal combustion engine, the combination with the main cylinder and the piston therein, of the admission port 0, the admission valve E, the exhaust port G, the exhaust valve F, the reciprocating valve rod K normally out of engagement with said exhaust valve, the auxiliary cylinder 4 communicating with the main cylinder, the piston 0 in said auxiliary cylinder, the shoe on said valve rod, and the part Z adapted to be moved by said auxiliary piston into engagement with said shoe to throw said valve rod into engagement with said exhaust valve.
6. In an internal combustion engine, the combination with the main cylinder and the piston therein, of an exhaust port, a valve governing the same, a reciprocating valve rod adjacent to but normally out of engagement with said exhaust valve, and adapted to reciprocate constantly while the engine is running a support for said valve rod having slotted connection therewith and adapted to swing with the reciprocation of the rod, and mechanism responsive to explosion pressure in said cylinder adapted to throw said valve rod away from its normal support and into engagement with said valve.
7. In an internal combustion engine, the combination with the usual cylinder, piston and crank shaft, of an exhaust port, a valve therefor having a stem, a constantly reciprocating valve rod having one end attached to an eccentric mounted on the crank shaft and having the other end disposed adjacent the end of said valve stem but out of line therewith, a support for said valve rod at such end having slotted connection therewith and adapted to swing with the reciprocation of the rod, and mechanism responsive to explosion pressure in said cylinder adapted to throw said valve rod away from its normal support and shift said rod into line with said stem so as to engage the same.
8. In an internal combustion engine, the combination with the usual cylinder, piston and crank shaft, of an exhaust port, a valve therefor, a stem on which said valve is mounted, a valve rod eccentrically mounted upon the crank shaft and extending substantially parallel with the piston rod to a point adjacent said valve stem, a support for said valve rod near said point having slotted connection therewith and adapted to swing with the reciprocation of the rod, and mechanism responsive to explosion pressure in said cylinder adapted to throw said valve rod away from its normal support and into line with said stem so as to engage the same, said parts being so formed as to remain in engagement during a predetermined time.
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