Cylinder pressure transmitter for an internal combustion engine
US4767960A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1983 |
| Grant date | Aug 30, 1988 |
| Priority date | — |
| Expiry date | Dec 15, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L23/222
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A cylinder pressure transmitter has piezoelectric means to provide an electrical signal corresponding to pressure in a cylinder of an automotive internal combustion engine during engine operation and has electronic means to amplify the signal for transmission to computer control means for use in regulating spark advance to improve engine efficiency and performance and reduce engine knocking. The pressure transmitter has a generally cylindrical body having a chamber open at both ends for attachment to an engine cylinder, has a diaphragm secured over one end of the chamber, and has the piezoelectric means held against the diaphragm with a selected preload compressive force by backing means which are threadedly engaged with the body inside the chamber for adjustment to provide the desired force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.