| Patents for G01F 9 - Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine (1,467) |
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| 04/25/1984 | EP0106811A2 Fuel consumption signalling device for a motor vehicle |
| 04/24/1984 | US4444047 Apparatus for determining the fuel consumption of injection internal combustion engines |
| 04/24/1984 | US4444046 Device for indicating the instantaneous fuel consumption of an automotive vehicle |
| 04/04/1984 | EP0104978A1 Device for measuring fuel consumption |
| 03/27/1984 | US4438648 Differential mass flowmeter |
| 03/20/1984 | US4438423 Device for producing an optical or acoustic shift instruction |
| 03/20/1984 | US4437342 Diagnostic system for detecting fault in fuel system of engine having electronic fuel injection system |
| 03/13/1984 | US4437162 Residual liquid meter using computer responsive to measurements of liquid level and flow |
| 03/07/1984 | EP0101804A1 Differential mass flow meter |
| 03/06/1984 | US4434762 Apparatus and system for controlling the air-fuel ratio supplied to a combustion engine |
| 03/01/1984 | WO1984000814A1 Fuel efficiency monitor |
| 02/22/1984 | EP0100831A1 Device for measuring the fuel consumption of vehicles on a roller-type testing stand |
| 01/04/1984 | EP0097337A2 Trip computer for vehicles |
| 12/07/1983 | EP0095535A1 Apparatus for measuring fuel consumption of a liquid-fuel burning engine |
| 11/23/1983 | EP0094860A1 Device for mixing flowing gases, especially for detecting a value chosen in relation to the amounts of gas of a respiration mixture and for maintaining the relation at this value |
| 11/16/1983 | EP0094370A2 Device for determining the fuel consumption of an internal-combustion engine |
| 11/02/1983 | EP0092543A1 Method and device for measuring the energy loss for vehicles driven by an internal-combustion engine |
| 11/01/1983 | US4413249 Vehicle fuel-efficiency warning device |
| 10/26/1983 | EP0092483A2 Display unit of fuel consumption meter for automobile |
| 10/25/1983 | US4411239 Fuel cooling system for use with a closed fuel injection circuit in a diesel engine |
| 10/18/1983 | US4409847 Ultrasonic measuring arrangement for differential flow measurement, particularly for measurement of fuel consumption in motor vehicles with a fuel return line |
| 09/07/1983 | EP0088068A1 Device for measuring the total fuel consumption of a motor vehicle |
| 09/06/1983 | US4402209 Liquid level float gauge calibration means |
| 08/23/1983 | US4400779 Method and apparatus for indicating mileage corresponding to remaining fuel for vehicles |
| 08/09/1983 | US4397178 Fuel economy running indicator |
| 07/13/1983 | EP0083341A1 Device for measuring the fuel consumption of an internal combustion engine. |
| 06/14/1983 | CA1147980A1 Method for determining the gasoline mileage for a vehicle |
| 06/09/1983 | WO1983002001A1 Sonic pressure volume measuring device |
| 05/24/1983 | US4384479 Automotive vehicle fuel consumption measuring device |
| 05/24/1983 | US4384478 System for indicating optimum operating economy of internal combustion engines in boats |
| 05/11/1983 | WO1983001686A1 Method and device for measuring the energy loss for vehicles driven by an internal-combustion engine |
| 04/13/1983 | EP0076764A1 Device for indicating economic driving |
| 04/05/1983 | US4378694 Instrument for measuring the speed and fuel consumption of motor vehicles |
| 03/22/1983 | CA1143181A1 Fuel consumption measuring apparatus |
| 03/01/1983 | CA1141991A1 Apparatus for measuring fuel flow |
| 02/15/1983 | US4373383 Device for burnoff of a measuring resistor |
| 02/08/1983 | CA1140847A1 Process and apparatus for thermal treatment of sludge |
| 01/25/1983 | CA1139963A1 Non intrusive fluid measuring system |
| 01/20/1983 | WO1983000221A1 Device for measuring the fuel consumption of an internal combustion engine |
| 12/22/1982 | EP0067348A2 Liquid level float gauge calibration means |
| 10/28/1982 | WO1982003605A1 Improvements in and relating to aids for vehicle drivers |
| 10/19/1982 | US4354383 Method of and device for measuring the amount of liquid fuel in a tank |
| 10/12/1982 | US4354173 Arrangement for obtaining an indication of efficiency of operation of a motor vehicle |
| 10/05/1982 | US4352289 Fuel consumption indicator |
| 09/29/1982 | EP0061366A1 Device for calculating the ratio of two frequencies representing two physical values |
| 09/22/1982 | EP0060327A1 Device for acoustical or visual gear shifting |
| 09/21/1982 | US4350880 Automatic fuel-cost monitoring system |
| 09/14/1982 | US4348894 Fuel quantity measuring apparatus |
| 09/08/1982 | EP0059303A2 Arrangement for cooling the fuel in an operating system of a Diesel engine with a closed injection circuit |
| 07/13/1982 | US4338816 Fuel-consumption monitor for diesel engine |
| 07/07/1982 | EP0055333A2 Fuel consumption indicating device for an automotive vehicle |
| 06/15/1982 | US4334425 Ship efficiency analyzer |
| 06/09/1982 | EP0053205A1 Instrument for measuring the speed and fuel consumption of motor vehicles |
| 06/08/1982 | US4333337 Method for determining the gasoline mileage for a vehicle |
| 05/04/1982 | US4327577 Efficiency meter for a vehicle engine |
| 04/14/1982 | EP0049335A2 Device for determining the road-specific fuel consumption |
| 04/07/1982 | EP0048960A2 Measurement arrangement for a flowable fuel quantity in injection systems for power plants, especially fuel injection systems for internal-combustion engines and for stationary burner systems |
| 03/23/1982 | US4321590 Check mechanism for fluid level warning device in fluid reservoirs |
| 03/23/1982 | US4321056 Measurement of engine oil consumption |
| 03/10/1982 | EP0047136A1 Fuel consumption measuring system for an internal combustion engine powered vehicle |
| 01/27/1982 | EP0044403A2 Method for the measurement of fuel consumption |
| 01/06/1982 | EP0043283A2 Monitoring fuel consumption of internal combustion engines |
| 01/05/1982 | CA1115558A1 Apparatus for testing the volumetric output of fuel injector system components |
| 12/22/1981 | US4307452 Fuel consumption measuring apparatus |
| 12/08/1981 | US4304125 Method and apparatus for measuring fuel flow |
| 11/24/1981 | CA1112900A1 Fuel volume meter |
| 11/18/1981 | EP0039673A1 Method and apparatus for measuring fuel flow |
| 10/20/1981 | US4296472 Non-intrusive fluid measuring system |
| 10/13/1981 | US4294108 Device for measuring the fuel consumption of a vehicle |
| 08/25/1981 | US4286324 Prime mover fuel efficiency control system |
| 08/11/1981 | US4282746 Rate-of-use fuel consumption indicator for combustion engines |
| 07/29/1981 | EP0032534A1 Device for displaying the fuel consumption of a motor vehicle |
| 07/28/1981 | US4280358 Monitoring the operation of an internal combustion engine |
| 05/28/1981 | WO1981001462A1 Method and apparatus for measuring fuel flow |
| 05/27/1981 | EP0029308A2 Electronic fuel consumption measuring apparatus and method |
| 03/11/1981 | EP0024742A2 Device for indicating the momentary fuel consumption of a motor vehicle |
| 03/10/1981 | US4254744 Method and apparatus for measuring air quantity in relation to engine speed |
| 03/03/1981 | US4253330 Fuel consumption measuring apparatus |
| 02/04/1981 | EP0023283A1 Device for receiving information about the economic and/or non-economic running of a motor vehicle |
| 02/03/1981 | US4249242 Device for monitoring mean operating conditions |
| 01/27/1981 | US4247757 Vehicle fuel economy energy conservation indicating device and process for use |
| 01/27/1981 | US4246778 Fuel consumption indicating instrument |
| 01/13/1981 | US4244211 Apparatus for measuring small weight capacities of liquids |
| 01/13/1981 | US4244210 Combined fuel level and fuel consumption indicator |
| 01/07/1981 | EP0021023A2 Apparatus to determine the momentary fuel consumption of fuel injection-engines |
| 12/10/1980 | EP0019856A1 Method and apparatus for volumetrically measuring liquids |
| 09/09/1980 | US4221126 Electronic device for indicating engine speed |
| 08/19/1980 | US4218744 Fuel flow consumption monitoring system |
| 08/12/1980 | US4217644 Apparatus for indicating the distance over which a vehicle can travel with the residual fuel |
| 07/15/1980 | US4212200 Instantaneous flow meter for automobile vehicles |
| 07/15/1980 | US4212195 System to measure fuel consumption of a vehicle |
| 07/01/1980 | US4210908 Two-dimensional display apparatus for an automobile |
| 06/10/1980 | CA1079090A1 Flow rate measuring device |
| 04/30/1980 | EP0010436A1 A method of and apparatus for monitoring the operation of an internal combustion engine and a motor vehicle having an internal combustion engine monitored by such apparatus |
| 04/29/1980 | US4199977 Installation for the continuous measurement of the fuel consumption of internal combustion engines |
| 04/03/1980 | WO1980000612A1 Method of and apparatus for measuring the rate of fuel consumption in a vehicle |
| 03/19/1980 | EP0008927A1 Method of and apparatus for measuring the rate of fuel consumption in a vehicle |
| 03/18/1980 | CA1074010A1 Apparatus and method for a digital readout of a distance traveled, fuel consumed and miles per gallon of a moving motor vehicle |
| 01/29/1980 | US4186296 Vehicle energy conservation indicating device and process for use |
| 12/18/1979 | US4179740 Vehicle performance analyzer |