Control method and apparatus for a heated tip injector
US6176226A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1999 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Jun 25, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M53/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for controlling a heated tip injector having a connector with more than two pins. In one embodiment, the method includes (a) providing a plurality of heated tip injectors each having a coil and an internal heater; (b) maintaining all the internal heaters in an OFF state while the engine is cranking; (c) maintaining an internal beater in an OFF state if any of the coils are ON; and (d) maintaining an internal heater in an ON state if the engine is not cranking and all the internal heater coils are OFF. One embodiment of the apparatus includes a plurality of heated tip injectors each having a coil and an internal heater; a power supply; an ignition switch connected to the power supply, one end of each coil and heater being connected together and to the ignition switch; an engine electronic control unit, another end of each coil being connected to the engine electronic control unit; means for switching each internal heater ON and OFF, another end of each internal heater being connected through a respective means for switching to ground; a crank circuit including a crank for cranking the engine; and means for isolating the crank circuit from the engine electronic…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.