Gas sensor units for engines
US7168423B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 28, 2005 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Jul 28, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a multipurpose engine with a reduced or limited displacement adapted for use in a portable work machine or the like, the engine includes a detecting element of a gas sensor for controlling an air-fuel ratio. Damage or degradation of the detecting element due to vibration from the engine is reduced or eliminated. To achieve this, a supporting device having a vibration-damping-function is provided for supporting the gas sensor or the gas sensor unit containing the gas sensor. The supporting device permits the gas sensor or the gas sensor unit to move by an amount equal to or less than a predetermined extent of movement of the engine, so that the transmission of vibration from the engine directly to the gas sensor is reduced or eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.