Centrifugal separating filter
AssigneeKomatsu Ltd.
InventorsYasuyuki Onodera, Kenji Mihara
Life of this patent
Estimating the term…
Abstract
A centrifugal separating filter, which can efficiently separate dirt particles in liquid and keep the liquid clean, includes a turbine driving device (20), which is provided for rotating a rotating member (11) included inside the filter, and the turbine driving device (20) is driven by air pressure or exhaust gas pressure from an internal combustion engine (1) to separate foreign materials in a fluid. A control device (25) is provided for outputting an open/close command signal to a valve (26) provided at a turbine inlet of the turbine driving device (20), based on an output signal from at least one sensor (28) for detecting pressure or rotational speed of the internal combustion engine (1), and an output signal from an oil deterioration sensor (28).
Claims22
A centrifugal separating filter which includes an inner rotating member, and which separates foreign materials in a fluid by rotating the rotating member, said filter comprising:
- a turbine driving device (20) for rotating said rotating member (11);
- a pressurized gas supply for driving said turbine driving device;
- and
- a control device (25) for outputting an open/close command signal, to a valve (26) which is provided at a turbine inlet of said turbine driving device (25), based on an output signal from at least one condition sensor (28) and an output signal from an oil deterioration sensor (28) for detecting fouling of lubricating oil in the internal combustion engine (1),
- wherein said at least one condition sensor is at least one of (a) a pressure sensor for detecting a boost pressure of an internal combustion engine (1), (b) a pressure sensor for detecting an exhaust gas pressure of the internal combustion engine, (c) a pressure sensor for detecting a lubricating oil pressure of the internal combustion engine, (d) a speed sensor for detecting a rotational speed of the internal combustion engine, and (e) a speed sensor for detecting a rotational speed of a turbocharger (6).
A centrifugal separating filter which includes an inner rotating member, and which separates foreign materials in a fluid by rotating the rotating member, said filter comprising:
- a turbine driving device (20) for rotating said rotating member (11);
- a pressurized gas supply for driving said turbine driving device;
- and
- a control device (25) for outputting an open/close command signal, to a valve (26) provided at a turbine inlet of said turbine driving device (25), based on an output signal from at least one condition sensor (28) and an output signal from an oil deterioration sensor (28) for detecting fouling of lubricating oil in the internal combustion engine (1);
- wherein said at least one condition sensor is at least one of (a) a pressure sensor for detecting a boost pressure of an internal combustion engine (1), (b) a pressure sensor for detecting an exhaust gas pressure of the internal combustion engine, (c) a pressure sensor for detecting a lubricating oil pressure of the internal combustion engine, (d) a speed sensor for detecting a rotational speed of the internal combustion engine, and (e) a speed sensor for detecting a rotational speed of a turbocharger (6);
- wherein said pressurized gas supply supplies either exhaust gas from the internal combustion engine or compressed air from a compressor;
- and
- wherein said turbine driving device (20), for rotating said rotating member (11), is driven by air pressure or said exhaust gas pressure, and by ejection pressure of said fluid.
Apparatus comprising:
- a centrifugal separating filter having an inner rotating member;
- a turbine driving device, for rotating said inner rotating member, said turbine driving device having a turbine inlet;
- a valve provided at said turbine inlet;
- a pressurized gas supply for providing pressurized gas through said valve to said turbine inlet to drive said turbine driving device;
- at least one sensor;
- and
- a control device for outputting an open/close command signal to said valve based on an output signal from said at least one sensor.
Apparatus comprising:
- an internal combustion engine, which produces exhaust gas;
- a centrifugal separating filter having an inner rotating member for filtering lubricating oil from the internal combustion engine;
- a turbine driving device, for rotating said inner rotating member, said turbine driving device having a turbine inlet;
- a valve provided at said turbine inlet;
- a pressurized gas supply for providing pressurized gas through said valve to said turbine inlet to drive said turbine driving device;
- at least one condition sensor for detecting an operating condition of the internal combustion engine;
- an oil deterioration sensor for detecting fouling of lubricating oil in the internal combustion engine;
- and
- a control device for outputting an open/close command signal to said valve based on an output signal from said at least one condition sensor and an output signal from said oil deterioration sensor.
Dependencies are inferred from the claim text.