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公开(公告)号：EP1037799B1
公开(公告)日：2002-12-18
申请号：EP99939068.5
申请日：1999-08-06
申请人： Tokheim Corporation
发明人： KOCH, Wolfgang , BROWN, Arthur
CPC分类号： B67D7/0486
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2.发明公开APPARATUS FOR DETECTING HYDROCARBONS USING CRYSTAL OSCILLATORS WITHIN FUEL DISPENSERS 审中-公开石英振荡器燃料供给装置，油气探测器
公开(公告)号：EP1135325A1
公开(公告)日：2001-09-26
申请号：EP99940894.1
申请日：1999-08-06
申请人： Tokheim Corporation
发明人： KOCH, Wolfgang, H. , BROWN, Arthur
CPC分类号： B67D7/0476 , B67D7/048 , G01N29/036 , G01N2291/021
摘要： A vapor recovery system (18) utilizes a crystal oscillator (30) for sensing the presence of hydrocarbon in the vapor emissions emanating from a fuel tank (10) during refueling. The crystal oscillator (30) is coated with a layer of material having a sensitivity for hydrocarbon. In response to any interaction between the coating layer and hydrocarbon, the crystal oscillator (30) experiences a shift in its oscillation frequency relative to the fundamental resonance frequency. The frequency shift (34) is representative of the hydrocarbon concentration in the vapor emissions. A control signal (36) based on the frequency shift (34) is generated and then used to adjust the operating speed of a vapor pump (26).
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公开(公告)号：EP1037799A1
公开(公告)日：2000-09-27
申请号：EP99939068.5
申请日：1999-08-06
申请人： Tokheim Corporation
发明人： KOCH, Wolfgang , BROWN, Arthur
IPC分类号： B65B1/04
CPC分类号： B67D7/0486
摘要： A vapor recovery system (18) is provided to direct measurements of the oxygen concentration within vapor emissions displaced from a fuel tank (10) during refueling to adjust the operating speed of a vapor pump (26).
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4.发明公开VAPOR RECOVERY SYSTEM UTILIZING A FIBER-OPTIC SENSOR TO DETECT HYDROCARBON EMISSIONS 审中-公开与光纤传感器碳氢化合物的排放检测抽汽DEVICE
公开(公告)号：EP1105714A1
公开(公告)日：2001-06-13
申请号：EP99948034.6
申请日：1999-08-06
申请人： Tokheim Corporation
发明人： KOCH, Wolfgang, H. , BROWN, Arthur
IPC分类号： G01N21/00
CPC分类号： B67D7/0478 , B67D7/0482 , G01N21/171 , Y10T436/12 , Y10T436/218
摘要： A method and apparatus is disclosed for sensing hydrocarbon in the vapor path of fuel dispensers using a fiber-optic sensor. The sensor includes an absorber-expander sensing structure mechanically coupled to the fiber body and responsive to the presence of effluent fuel components. The system includes fuel dispensing system (14) in operative association with a fiber optic sensor apparatus (10), a vapor pump (26), and a controller (26) for operating the vapor pump (26) responsive to the sensor apparatus (10).
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