Oscillator reciprocation control system for piston motor
An apparatus is described for controlling the revolution of the drive shaft of an engine comprising: an actuating cylinder; a piston with rod, serving as an actuating member, mounted for reciprocation inside the actuating cylinder and dividing the cavity of the cylinder into a rodless cavity and a rod cavity; a source of working fluid; a valve distributor serving as a switching member and communicating each one of the cavities, namely, the rod cavity and the rodless cavity, with the source of working fluid; a valve in the valve distributor; a crank member serving as a converter of reciprocation of the piston to revolution of a drive shaft and effecting the kinematic coupling of the rod with the drive shaft; an electric oscillator whose frequency is variable in accordance with a preset r.p.m. of the drive shaft; a converter in the form of a linear dynamic link coupled electrically with the oscillator and mechanically with the valve of the valve distributor; a transducer of the current value of the piston position relative to its neutral position, the transducer being coupled by means of negative electric feedback to the converter.
- Assignee:
- NOV; NOV-87-070656; EDB-87-140033
- Patent Number(s):
- US 4679490
- OSTI ID:
- 6120960
- Country of Publication:
- United States
- Language:
- English
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Piston and valve assembly
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Related Subjects
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
AMPLIFIERS
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
CYLINDERS
ELECTRONIC EQUIPMENT
ENGINES
EQUIPMENT
FEEDBACK
FLOW REGULATORS
FLUIDS
FREQUENCY CONTROL
MACHINE PARTS
MECHANICAL TRANSMISSIONS
MOTION
OSCILLATORS
PISTONS
ROTATION
SHAFTS
TRANSDUCERS
VALVES
VEHICLES
WORKING FLUIDS