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US 8,037,751 B2Granted
Flow rate measuring apparatus
AssigneeMitsubishi Electric Corporation
InventorsYuji Ariyoshi, Masahiro Kawai, Koji Tanimoto, Hiroyuki Uramachi
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AssigneeMitsubishi Electric Corporation
InventorsYuji Ariyoshi, Masahiro Kawai, Koji Tanimoto, Hiroyuki Uramachi
Estimating the term…
The flow rate measuring apparatus includes a connector portion, a main body portion, a bypass passage, a flow rate sensing element having a flow rate detection portion, a control circuit, a pair of metal terminals having end portions connected to a connector, embedded portions molded integrally with a resin portion constituting the main body portion, and exposed portions exposed in the main passage, which are connected to each other in a cascade manner, and a fluid temperature sensing element having a temperature sensing portion. The fluid temperature sensing element is arranged at a position apart from an outer wall surface of a side face of the bypass passage, and the temperature sensing portion is arranged at the center between the pair of metal terminals that are exposed in the main passage by the same length or between extension lines thereof.
A flow rate measuring apparatus, comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Using a particular type of heating, cooling or sensing element: of resistive type
Structural arrangements; Mounting of elements, e.g. in relation to fluid flow: with means for influencing the fluid flow
Measuring volume, volume flow, mass flow or liquid level
About 3 years 6 months of term left · ends 14 Apr 2030 (estimated)
1. Field of the Invention
The present invention relates to a flow rate measuring apparatus which is suitable for measuring an intake air amount of an internal combustion engine, for example.
2. Description of the Related Art
In the accompanying drawings:
FIG. 1 is a front view illustrating the flow rate measuring apparatus according to Embodiment 1 of the present invention, which is installed to a pipe of an internal combustion engine;
FIG. 2 is a rear view illustrating the flow rate measuring apparatus according to Embodiment 1 of the present invention, which is installed to a pipe of the internal combustion engine;
Hereinafter, preferred embodiments of the flow rate measuring apparatus according to the present invention are described with reference to the attached drawings.
FIG. 1 is a front view illustrating the flow rate measuring apparatus according to Embodiment 1 of the present invention, which is installed to a pipe of an internal combustion engine. A main body portion 11 of the flow rate measuring apparatus 10 is inserted into a pipe 1 through an apparatus inserting hole 2, and a flange portion 12 of the same is fixed to the pipe 1. The main body portion 11 is provided with a connector portion 13, a circuit housing portion 14, and a bypass passage 15 along the insertion direction into the pipe 1.
A flow rate sensing element 16 having a detection portion 16a on the surface thereof is arranged inside the bypass passage 15. In addition, a circuit board 14a is housed in the circuit housing portion 14, and a control circuit for driving the flow rate sensing element 16 and processing a signal from the same is mounted on the circuit board 14a. A power supply for driving the circuit and a flow rate signal are connected externally through a connector portion 13.