초록 ▼

This invention provides a valving arrangement for a reciprocating engine in which there are two valve assemblies, each with a pressure responsive valve member. As the piston approaches the end of its stroke in either direction, the exhaust port is closed, such as by an extension on the piston, causi

This invention provides a valving arrangement for a reciprocating engine in which there are two valve assemblies, each with a pressure responsive valve member. As the piston approaches the end of its stroke in either direction, the exhaust port is closed, such as by an extension on the piston, causing fluid pressure to build up in the end of the cylinder. This pressure is conducted to the valve assemblies through fluid lines, causing the pressure-responsive valve members to move in response to the pressure build-up in the end of the cylinder. These valve members control the inlet and exhaust connections to the cylinder so that the piston is caused to reciprocate by the working fluid as the valve members are moved pneumatically to open and close the lines.

대표청구항 ▼

An engine comprising a cylinder a floating piston in said cylinder, a first inlet port and a first exhaust port adjacent one end of said cylinder, a second inlet port and a second exhaust port adjacent the opposite end of said cylinder, a first inlet line connected to said first inlet port, a second

An engine comprising a cylinder a floating piston in said cylinder, a first inlet port and a first exhaust port adjacent one end of said cylinder, a second inlet port and a second exhaust port adjacent the opposite end of said cylinder, a first inlet line connected to said first inlet port, a second inlet line connected to said second inlet port, a first exhaust line connected to said first exhaust port, a second exhaust line connected to said second exhaust port, a first valve unit connected to said first inlet line and said first exhaust line, a second valve unit connected to said second inlet line and said second exhaust line, a first pressure responsive valve member in said first valve unit movable to two positions in one of which it opens said first inlet line and closes said first exhaust line, and in the other of which it closes said first inlet line and opens said first exhaust line, a second pressure responsive valve member in said second valve unit movable to two positions in one of which it opens said second exhaust line and closes said second inlet line, and in the other of which it closes said second exhaust line and opens said second inlet line, a first fluid passage extending from said one end of said cylinder to said first and second valve units and connected such that fluid pressure in said first fluid passage will urge said first pressure responsive valve member to said one position thereof, and said second valve member to said one position thereof, a second fluid passage extending from the opposite end of said cylinder to said first and second valve units, and connected such that fluid pressure in said second fluid passage will urge said first valve member to said other position thereof and will urge said second valve member to said other position thereof, means for closing said second exhaust port as said piston approaches said opposite end of said cylinder for building up pressure in said second fluid passage for moving said first and second pressure responsive valve members to said other positions thereof, and means for closing said first exhaust port as said piston approaches said one end of said cylinder for building up pressure in said first fluid passage for moving said first and second pressure responsive valve members to said one position of each of said valve members.