초록 ▼

A single meter blending fuel dispensing system utilizing a pair of proportional flow control valves each having a pressure transducer positioned aft of the valve flow control mechanism. A computer controller is used to program a desired fuel mixture by varying the pressure for each flow control valv

A single meter blending fuel dispensing system utilizing a pair of proportional flow control valves each having a pressure transducer positioned aft of the valve flow control mechanism. A computer controller is used to program a desired fuel mixture by varying the pressure for each flow control valve. A pressure decrease in one valve produces a corresponding pressure increase in the other valve. A third pressure transducer can be situated downstream of the valves and is set such that the pressure it receives cannot exceed that of the two valve pressures. Flow meters can be substituted for the pressure sensors. A calibration method for calibrating the positive displacement meter is also disclosed. At installation the positive displacement meter is at its most accurate and is synchronized with the less accurate pressure sensors or flow meters. As time passes and the positive displacement meter wears it can be re-calibrated using the baseline data and the pressure sensors or flow meters which are not subject to mechanical wear.

대표청구항 ▼

A single meter blending fuel dispensing system utilizing a pair of proportional flow control valves each having a pressure transducer positioned aft of the valve flow control mechanism. A computer controller is used to program a desired fuel mixture by varying the pressure for each flow control valv

A single meter blending fuel dispensing system utilizing a pair of proportional flow control valves each having a pressure transducer positioned aft of the valve flow control mechanism. A computer controller is used to program a desired fuel mixture by varying the pressure for each flow control valve. A pressure decrease in one valve produces a corresponding pressure increase in the other valve. A third pressure transducer can be situated downstream of the valves and is set such that the pressure it receives cannot exceed that of the two valve pressures. Flow meters can be substituted for the pressure sensors. A calibration method for calibrating the positive displacement meter is also disclosed. At installation the positive displacement meter is at its most accurate and is synchronized with the less accurate pressure sensors or flow meters. As time passes and the positive displacement meter wears it can be re-calibrated using the baseline data and the pressure sensors or flow meters which are not subject to mechanical wear. 414/331; US-5596502, 19970100, Koski et al., 364/468.01; US-5597113, 19970100, Bradford, 229/120.36; US-4966280, 19970300, Bradford, 206/721; US-5608621, 19970300, Caveney et al., 395/216; US-5613610, 19970300, Bradford, 206/721; US-5630070, 19970500, Dietrich et al., 395/208; US-5653351, 19970800, Grout et al., 212/315; US-5666493, 19970900, Wojcik et al., 705/026; US-5672039, 19970900, Perry et al., 414/280; US-5712989, 19980100, Johnson et al., 395/228; US-5720157, 19980200, Ross, 053/445; US-5758329, 19980500, Wojcik et al., 705/028; US-5787283, 19980700, Chin et al., 395/701; US-5822216, 19981000, Satchell, Jr. et al., 364/479.01; US-5826238, 19981000, Chen et al., 705/008; US-5867714, 19990200, Todd et al., 395/712; US-5873449, 19990200, Davenport, 198/370.09; US-5894571, 19990400, O'Connor, 395/652; US-5903457, 19990500, Chang, 364/468.01; US-5916508, 19990600, Bradford, 264/263; US-5919247, 19990700, Van Hoff et al., 717/173; US-5936860, 19990800, Arnold et al., 364/468.01; US-5937388, 19990800, Davis et al., 705/008; US-5943841, 19990800, Wunscher, 053/154; US-5963743, 19991000, Amberg et al., 395/712; US-5971587, 19991000, Kato et al., 364/468.22; US-5974547, 19991000, Klimenko, 709/217; US-5991543, 19991100, Amberg et al., 395/712; US-5991732, 19991100, Moslares, 705/008; US-5995757, 19991100, Amberg et al., 717/175; US-6039168, 20000300, Head, III, 198/341.07; US-6052684, 20000400, Du, 707/008; US-6076652, 20000600, Head, III, 198/341.07; US-6080207, 20000600, Kroening et al., 717/177; US-6109444, 20000800, Bagwell et al., 206/589; US-6139240, 20001000, Ando, 414/267; US-6144945, 20001100, Garg et al., 705/028; US-6148291, 20001100, Radican, 705/028; US-6170630, 20010100, Goss et al., 193/035; US-618227