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Joma-Hydromechanic GmbH
| Joma-Hydromechanic GmbH Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20090078241 | METHOD FOR ADJUSTING A DISPLACEMENT PUMP THAT HAS A VARIABLE VOLUME FLOW RATE IN AN INTERNAL COMBUSTION ENGINE - The invention relates to a method for adjusting a displacement pump that has a variable volume flow rate in an internal combustion engine. Said method comprises the following steps: the displacement pump is driven; the fluid is conveyed to the consumption points in the internal combustion engine; at least one characteristic value is determined from the exhaust gas flow of the internal combustion engine; said characteristic value is forwarded to a control device as an actual value signal; the actual value signal is compared to a given target value; a control signal is preprocessed from the deviation between the actual value signal and the target value; the control signal is fed to an actuator; the volume flow rate of the displacement pump is modified by means of the actuator in accordance with the control signal; the steps of the method are repeated until the actual value signal is identical to the target value. | 03-26-2009 |
| 20080279699 | FEED PUMP - The disclosure relates to a feed pump for hydraulic media having an input and an output. A pressure-reducing element is connected to the output, at the output of the element the system pressure being present and the output being connected to a consumer, wherein the output is connected to the first input of a pump controller, the second input being connected to the output of the pressure-reducing element, and wherein the pump controller adjusts the feed pump toward maximum delivery if the system pressure is smaller than a minimum pressure or if the system pressure is smaller than the feed pressure, and wherein parallel to the pump controller a pressure limiter is switched such that at the first input thereof the feed pressure is present and at the control input the system pressure is present, wherein the pressure limiter opens if the feed pressure is greater than a desired quantity. | 11-13-2008 |