Fuel injection device having heater
US6561168B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2002 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Mar 29, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M31/125
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A nozzle needle has a hollow tubular form having a closed base end. A heat transfer tube is press fitted into a first magnetic portion. The heat transfer tube surrounds an outer peripheral surface of the nozzle needle. A ceramic heater is formed as an integral cylindrical body by sintering a ceramic material together with a heat generating resistive element. A case covers the heater and protects the heater from externally applied water. An inner tube of the case is resiliently engaged with both the heater and the first magnetic portion. Heat of the heater is conducted to the nozzle needle through the inner tube, the first magnetic portion and the heat transfer tube to heat fuel inside the nozzle needle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.