Pressure sensor that measures the pressure within a combustion chamber of an internal combustion engine
US10578506B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2016 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Nov 6, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F1/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pressure sensor includes: a diaphragm joined to a front side of a housing via a joint portion; a sensor portion; a connection portion connecting the diaphragm to the sensor portion; and a heat receiving portion disposed at the front side of the diaphragm. When: a minimum value of an area of a minimum inclusion region which is a virtual region, which include a cross-section of a portion from the heat receiving portion to the diaphragm and of which an overall length of a contour become minimum on a cross-section perpendicular to the axial line, is defined as a connection area Sn; and an area of a region surrounded by the joint portion on a projection plane perpendicular to the axial line when the diaphragm and the heat receiving portion are projected onto the projection plane is defined as a diaphragm effective area Sd, (Sn/Sd)≤0.25 is satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.