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7377161 |
Air flow measuring device provided with a vent in air passage
The present invention provides an air flow measuring device comprising a housing with a sub-passage having a inlet and a outlet for air flow formed in the housing, the sub-passage further having a...
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7360414 |
Device for determining at least one parameter of a medium flowing in a conduit and having a separation opening in the bypass passage
Devices for determining at least one parameter of a medium flowing in a conduit, in particular for determining the air-mass flow in the intake tract of an internal combustion engine, including a...
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7340353 |
Dual function flow measurement apparatus having an array of sensors
A dual function flow measurement apparatus is provided that combines the functionality of an apparatus that measures the speed of sound propagating through a fluid flowing within a pipe, and...
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7305877 |
Device for determining at least one parameter of a medium flowing in a line having diversion surface
A device for determining at least one parameter of a medium flowing in a line, in particular for determining the air mass flow rate in the intake manifold of an internal combustion engine, which...
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7295933 |
Configurable multi-function flow measurement apparatus having an array of sensors
A configurable multi-function flow measurement apparatus is provided that can selectably function to measure the speed of sound propagating through a fluid flowing within a pipe and/or to measure...
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7260986 |
Airflow meter with device for the separation of foreign particles
A device is provided for determining at least one parameter of a medium flowing in a line in a main flow direction, e.g., a parameter of the intake air mass of an internal combustion engine. The...
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7243538 |
Gas flow sensor system and method of self-calibration
A gas flow sensor system, and method for gas flow rate measurement and self-calibration to overcome problems caused by degradation. Gas flow rate is accurately measured by determining the power...
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7216535 |
Air flow measuring device and engine having the air flow measuring device
The present invention provides an air flow measuring device comprising a housing with a sub-passage having a inlet and a outlet for air flow formed in the housing, the sub-passage further having a...
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7201047 |
Air flow measuring device
The present invention provides an air flow measuring device comprising a housing with a sub-passage having a inlet and a outlet for air flow formed in the housing, the sub-passage further having a...
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7194920 |
Sensor probe and pipeline construction and method
A sensor and carrier device are provided in combination with a pipeline for either placing a sensor element within the flow stream of the pipeline or a device to divert flow outside of the pipeline...
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7162921 |
Measuring device for measuring the volume flow or the substance properties of a gas, whose direction of flow can reverse
A device for measuring the volume flow or other substance properties of a gas, whose direction of flow can reverse. The arrangement contains a specially designed Y-piece, which is used for...
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7127360 |
Dual function flow measurement apparatus having an array of sensors
A dual function flow measurement apparatus is provided that combines the functionality of an apparatus that measures the speed of sound propagating through a fluid flowing within a pipe, and...
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7107834 |
Thermal mass flow rate sensor including bypass passageways and a sensor passageway having similar entrance effects
A sensing apparatus for use in a mass flow rate sensor for measuring a fluid flow rate includes a main conduit for containing a fluid flow, and a sensor passageway for tapping a portion of the...
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7059183 |
Air flow measuring device
The present invention provides an air flow measuring device comprising a housing with a sub-passage having an inlet and an outlet for air flow formed in the housing, the sub-passage further having...
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7036366 |
Air flow measurement system having reduced sensitivity to flow field changes
A system for measuring air flow rate in a duct includes an air flow sensor and an air flow conditioning device for collecting and accelerating a portion of the total air stream to the sensor, which...
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7000464 |
Measuring and control of low fluid flow rates with heated conduit walls
The flow of a fluid at low flow rates is measured in a flow sensing assembly and controlled without introducing measuring devices into the fluid flow path. The flow sensing assembly is enclosed in...
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7000463 |
Reynolds number correction function for mass flow rate sensor
A mass flow rate sensor uses a Reynolds number correction function to compensate for errors in a bypass ratio of the sensor for all gases, based on the fact that all bypass errors are functions of...
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6983652 |
Flow direction detector
A flow direction detector is provided which includes a flow disruptor positioned in a fluid flow path to effect a detectable differential flow characteristic to such flow path based on fluid flow...
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6957586 |
System to measure density, specific gravity, and flow rate of fluids, meter, and related methods
A system to measure fluid flow characteristics in a pipeline, meter, and methods includes a pipeline having a passageway to transport flowing fluid therethrough, a process density meter including...
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6952960 |
Rectifier unit and rectifier attaching structure
A spacer has an annular concave portion, at one end face, to accept a rectifier that rectifies fluid flowing through a flow channel in a flowmeter, a protruding annular convex portion, at the other...
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6941807 |
Device with an air intake manifold and an air mass sensor arrangement inserted therein
The invention relates to a device with an air inlet manifold ( 1 ) and an air mass sensor arrangement ( 2 ) inserted radially therein, the insertion opening ( 3 ) of which is arranged perpendicular...
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6938473 |
Apparatus for measuring flow amount
An airflow meter has a membrane type sensor element. The sensor element is supported on a support member so that a sensing surface of the sensor element is in parallel to the airflow direction. The...
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6928865 |
Thermal flowmeter having a laminate structure
The present invention relates to a thermal flowmeter capable of sensing a flow rate in either direction, having a linear output characteristic, and producing a stable output without impairing the...
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6920784 |
Flow conditioning device
The present invention involves an air induction system for inducing ambient air to a vehicle engine. The system comprises an air filter for filtering the ambient air, a clean air duct, a sensor,...
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6918295 |
Thermal mass flow rate sensor providing increased rate of heat transfer to gas
A sensing apparatus for use in a mass flow rate sensor for measuring a fluid flow rate includes a main conduit for containing a fluid flow, and a capillary tube for tapping a portion of the fluid...
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6886401 |
Thermal flow sensor having sensor and bypass passages
A laminated filter is fit in a passage space formed in a body. The laminated filter is made of a mesh plate including a mesh part, a first blocking plate including a blocking part, a second...
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6843122 |
Mass flow controller for control purge and managing method of the same
The present invention relates to a mass flow controller for a control purge and a managing method of the same. When a user sets the mode to a control purge mode capable of controlling a maximum...
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6786089 |
Airflow meter
An airflow meter has a member that defines a bypass passage. The bypass passage has a sensing passage in which a sensor tip is disposed. The sensing passage is restricted in at least a lateral...
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6779395 |
Device for measuring the flow of a gas or a liquid in a bypass
A device for measuring the flow of a fluid has a primary duct and a bypass arranged in series to the primary duct. The bypass has a first section and a second section. A baffle plate with a hole...
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6736005 |
High accuracy measuring and control of low fluid flow rates
The flow of a fluid at low flow rates is measured and controlled without introducing measuring devices into the fluid flow path. As the fluid is flowing through tubing, the tubing is heated to...
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6732582 |
Method for quantifying film hole flow rates for film-cooled parts
To measure the flow rate of coolant through a cooling hole of a film-cooled part, a transient thermal response of an external surface temperature of the film-cooled part is measured and the...
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6722196 |
Device for measuring at least one parameter of a flowing medium
A device for measuring at least one parameter, in particular of a volumetric flow, of a medium flowing in a line, in particular of the intake air volumetric flow of an internal combustion engine,...
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6705159 |
Protective device for a mass flow sensor disposed in an air intake channel
Known devices for measuring the mass of a flowing medium can be impaired in their measurement precision by fluid components carried along in the medium. The device according to the invention has a...
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6684692 |
Device for measuring at least one parameter of a medium flowing in a line
A device for measuring at least one parameter of a medium flowing in a line, in particular the intake air mass of an internal combustion engine in which fluid particles and solid particles in the...
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6655207 |
Flow rate module and integrated flow restrictor
An integrated module is provided for measuring a flow rate of a fluid, whether gaseous or liquid, with a flow restrictor comprising a plurality of orifices adapted to a flow channel of the...
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6647776 |
Split-flow flowmeter with a profusion facing the detection element
A split-flow-type flowmeter includes a detection element 2 disposed to face a flow path thereof and a venturi structure 4 formed within a flow path 1 in the vicinity of the detection element ...
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6647775 |
Device for measuring at least one parameter of a flowing medium
In devices for measuring the mass of aspirated air of an internal combustion engine, for instance, via a line, it is already known to provide a tubular body inside this line and to provide a...
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6634226 |
Protective grating for a mass flow rate sensor in a channel of suctioned air
A device for measuring at least one parameter of a medium flowing in a line, particularly the intake-air volume of an internal combustion engine. Liquid particles contained in the line act upon a...
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6619140 |
Fluid flow meter having thermal flow sensor disposed in one of a plurality of fluid passages
A separator partitions an upstream side air passage of a bypass passage into first and second sub passages. A thermal flow sensor is attached to the separator facing the first sub passage. A convex...
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6619115 |
Sensor sheath and sensor device with a sensor
A sensor sheath for a thermal air flow rate sensor that is intended for disposition in a pipeline through which a fluid flows. In order to prevent the spread of ignition to the remainder of the...
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6591674 |
SYSTEM FOR SENSING THE MOTION OR PRESSURE OF A FLUID, THE SYSTEM HAVING DIMENSIONS LESS THAN 1.5 INCHES, A METAL LEAD FRAME WITH A COEFFICIENT OF THERMAL EXPANSION THAT IS LESS THAN THAT OF THE BODY, OR TWO RTDS AND A HEAT SOURCE
A system for sensing or measuring the motion of a fluid such as air. The system typically has a two-part plastic body containing an internal flow passage. The parts of the body may snap together or...
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6557409 |
Mass flowmeter
A mass flowmeter includes a flow straightener or rectifier having a honeycomb member. The honeycomb member has at least one honeycomb, which is aligned with a sensor element in a flow direction....
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6526822 |
Flow rate and flow velocity measurement device
A flow measurement device is disclosed, in which an accumulation of pollution substance onto a detection element is prevented, and which can measure a reverse flow similarly to a normal flow. On...
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6474176 |
Fluid flow measuring devices and methods for determining fluid flow rates in soils
A fluid flow device for determining fluid flow rates in soils includes a conduit for receiving a fluid. The conduit has a reduced channel portion to form a reduced channel portion which amplifies...
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6401531 |
Air flow meter having flow rectifier with lattice in fixed configuration
A device for measuring the mass of a flowing medium has a measuring element disposed in a measurement fitting. A flow rectifier that is provided upstream of the measuring element has flow openings...
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6361206 |
Microsensor housing
A microsensor housing having a structure with at least one inlet at one end and a thermal property sensor at the other end. Situated between the inlet and the sensor is a convection shield. Sampled...
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6340243 |
Liquid/gas phase detector system
A liquid/gas phase detector system employing a sensor to detect fluid phase, flow rate, and temperature. A flow conditioner in the form of a pipe segment with an inverted V-shaped section forming a...
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6336360 |
Device for measuring the mass of a medium flowing in a line
A device for measuring the mass of a medium flowing in a line, which carries an intake air quantity of an internal combustion engine. The device includes a temperature-sensitive measuring element...
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6276198 |
Device for measuring the mass of a flowing medium
A device for measuring the mass of a flowing medium having a measurement element accommodated in a measurement support, and a flow rectifier with a grid provided upstream of the measurement...
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6269692 |
Mass flow measuring assembly having low pressure drop and fast response time
An assembly for measuring the mass flow and flow rate of gases such as are used in semiconductor fabrication processes. The assembly includes an axial flow passage, viz., a capillary tube with a...
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