Piston engine
AssigneeFirma Carl Freudenberg
InventorGunter Ullrich
Life of this patent
Estimating the term…
Abstract
The disclosure teaches a piston engine having at least one reciprocating piston, a crankshaft rotatable within a support bracket, and a piston rod connecting the piston with the crankshaft, with an inertial mass mounted on the support bracket for movement with three degrees of freedom. A method for retrofitting a piston engine is also provided.
Claims18
A piston engine comprising:
- a support bracket;
- a crankshaft rotatably disposed in the support bracket;
- at least one piston;
- a piston rod connecting the piston with the crankshaft;
- a spring element connected to the support bracket;
- and
- a vibration-driven inertial mass connected solely to the spring element, the spring element and inertial mass operating to reduce noise caused by movement of the piston.
A piston engine comprising:
- a support bracket;
- a support plate rigidly attached to the support bracket;
- a crankshaft rotatably disposed in the support bracket;
- at least one piston;
- a piston rod connecting the piston with the crankshaft;
- a spring element connected to the support plate;
- a vibration-driven inertial mass connected solely to the spring element, the spring element and inertial mass operating to reduce noise caused by movement of the piston.
A method for reducing noise in a piston engine which has a support bracket, a crankshaft rotatably disposed in the support bracket and at least one piston, the method comprising the steps of:
- attaching a freely moveable inertial mass to the support bracket solely through a spring element, so as to reduce noise caused by movement of the piston.
A piston engine comprising:
- a support bracket;
- a crankshaft rotatably disposed in the support bracket;
- at least one piston;
- a piston rod connecting the piston with the crankshaft;
- a rubber spring element connected to the support bracket;
- and
- an inertial mass connected to the spring element.
A piston engine comprising:
- a support bracket;
- a crankshaft rotatably disposed in the support bracket;
- at least one piston;
- a piston rod connecting the piston with the crankshaft;
- a spring element connected to the support bracket opposite the piston;
- and
- an inertial mass connected to the spring element, the spring element and inertial mass operating to reduce noise caused by movement of the piston.
A piston engine comprising:
- a support bracket;
- a support plate rigidly attached to the support bracket;
- a crankshaft rotatably disposed in the support bracket;
- at least one piston;
- a piston rod connecting the piston with the crankshaft;
- a spring element integral with the support plate;
- an inertial mass integral with the spring element, the spring element and inertial mass operating to reduce noise caused by movement of the piston.
A method for reducing noise in a piston engine which has a support bracket, a crankshaft rotatably disposed in the support bracket and at least one piston, the method comprising the steps of:
- attaching an inertial mass to the support bracket through a spring element, the spring element and the inertial mass being placed opposite the piston.
A method for reducing noise in a piston engine which has a support bracket, a crankshaft rotatably disposed in the support bracket and at least one piston, the method comprising the steps of:
- attaching an inertial mass to the support bracket through a rubber spring element.
Dependencies are inferred from the claim text.