RESONANT PISTON MACHINE Russian patent published in 2005 - IPC

FIELD: mechanical engineering; piston machines.

SUBSTANCE: proposed resonant piston machine with crank-and-connecting rod mechanism contains shaft angular velocity pickup, ambient temperature transmitter, ambient barometric pressure transmitter, supercharging air temperature transmitter, supercharging air pressure transmitter and microprocessor control system. Microprocessor control system contains, in its turn, with mathematical model of operation of resonant piston machine, first comparator unit and second comparator unit. Output signals from shaft angular velocity pickup, ambient temperature transmitter, ambient barometric pressure transmitter, supercharging air temperature transmitter and supercharging air pressure transmitter are fed to inputs of unit with mathematic model of operation of resonant piston machine. Calculated value of supercharging air pressure corresponding to resonant mode at measured values of temperature and barometric pressure of ambient air are fed to first input of first comparator unit. Output signal from supercharging air pressure transmitter is fed to second input of first comparator unit. Calculated value of supercharging air temperature corresponding to resonant of operation at said measured values of temperature and barometric pressure of ambient air are fed to first input of second comparator unit, and to second input, output signal from supercharging air temperature transmitter is applied. Signals from outputs of first and second comparator units are supplied to inputs of first and second actuating-and-regulating devices, respectively, smoothly changing the pressure and temperature of supercharging air to provided minimum irregularity factor of piston machine shaft rotation angular velocity. Meeting of this condition means that piston machine is in resonance.

EFFECT: provision of automatic maintenance of resonant mode of operation of piston machine, minimum angular velocity irregularity factor of piston machine shaft.

2 cl, 7 dwg