Pressure sensor
First Claim
1. A pressure sensor comprising:
- a hollow liquid-enclosing container;
a pressure transmission fluid that is enclosed inside the liquid-enclosing container;
a diaphragm that is attached to the liquid-enclosing container and is elastically deformed when receiving pressure to transmit the pressure to the pressure transmission fluid;
a pressure detection element that is attached to the liquid-enclosing container, and detects the pressure transmitted to the pressure transmission fluid and converts the detected pressure into an electric signal; and
a heat dissipation member that is attached inside the liquid-enclosing container so as to be in contact with each of a part of an inner wall of the liquid-enclosing container and the pressure transmission fluid.
2 Assignments
0 Petitions
Accused Products
Abstract
A pressure sensor includes a connection portion provided with a screw portion configured to fix the pressure sensor to a combustion chamber of a vehicle engine; a hollow liquid-enclosing container fixed to one end of the connection portion; a pressure transmission fluid enclosed inside the liquid-enclosing container; a diaphragm fixed to one end of the liquid-enclosing container and elastically deformed when receiving pressure to transmit the pressure to the pressure transmission fluid; a pressure detection element fixed to the other end of the liquid-enclosing container and detecting the pressure transmitted to the pressure transmission fluid and converts the detected pressure into an electric signal; and a heat-dissipating rod provided inside the liquid-enclosing container. The connection portion and the liquid-enclosing container, and the connection portion and the diaphragm are mechanically connected to each other by welding or the like.
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Citations
10 Claims
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1. A pressure sensor comprising:
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a hollow liquid-enclosing container; a pressure transmission fluid that is enclosed inside the liquid-enclosing container; a diaphragm that is attached to the liquid-enclosing container and is elastically deformed when receiving pressure to transmit the pressure to the pressure transmission fluid; a pressure detection element that is attached to the liquid-enclosing container, and detects the pressure transmitted to the pressure transmission fluid and converts the detected pressure into an electric signal; and a heat dissipation member that is attached inside the liquid-enclosing container so as to be in contact with each of a part of an inner wall of the liquid-enclosing container and the pressure transmission fluid. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A pressure sensor comprising:
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a hollow liquid-enclosing container; a pressure transmission fluid that is enclosed inside the liquid-enclosing container; a diaphragm that is attached to the liquid-enclosing container and is elastically deformed when receiving pressure to transmit the pressure to the pressure transmission fluid; and a pressure detection element that is attached to the liquid-enclosing container, and detects the pressure transmitted to the pressure transmission fluid and converts the detected pressure into an electric signal, wherein an inner wall of the liquid-enclosing container is formed as an uneven surface, the inner wall being in contact with the pressure transmission fluid, or the pressure sensor further comprises a second heat-dissipating structural body that surrounds a part of the inner wall of the liquid-enclosing container and is in contact with a part of the inner wall. - View Dependent Claims (8, 9, 10)
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Specification