Electric-actuated fuel injector having a passive or memory circuit as a calibration group identifier
US6418913B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2000 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Oct 25, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injector has a body containing a mechanism that is operable to cause fuel to be injected out of the body and into an engine combustion chamber. An electric actuator operates the mechanism to initiate fuel injection and to terminate fuel injection. The injector has an identity circuit that possesses an identity characteristic identifying a calibration category into which the fuel injector has been previously categorized based on data obtained from actual operation of the fuel injector. In some embodiments the identity circuit is electrically connected in shunt with the electric actuator and imposes no significant effect on the response of the fuel injector to the initiating and terminating electric signals. In others, it is connected between engine ground and one actuator terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.