Method of using an internally heated tip injector to reduce hydrocarbon emissions during cold-start
AssigneeSiemens Automotive Corporation
InventorWilliam James Imoehl
Life of this patent
Estimating the term…
Abstract
A method of heating fuel using a heated tip fuel injector includes providing an internal combustion engine having at least one fuel injector, the at least one fuel injector having an internal heater; energizing the engine starter and the internal heater; injecting fuel using closed valve injection; changing the load on the engine and substantially simultaneously switching to open valve injection; and after catalyst light-off, substantially simultaneously switching to closed valve injection.
Claims15
A method of heating fuel using a heated tip fuel injector, comprising:
- providing an internal combustion engine having at least one fuel injector, the at least one fuel injector having an internal heater;
- substantially simultaneously energizing an engine starter and the internal heater;
- and
- substantially simultaneously changing a load on the engine and switching to open valve injection, after the injecting fuel using closed valve injection.
A method of heating fuel using a heated tip fuel injector, comprising:
- providing an internal combustion engine having at least one fuel injector, the at least one fuel injector having an internal heater;
- starting the engine;
- and then
- energizing the internal heater;
- injecting fuel using closed valve injection after the energizing;
- substantially simultaneously changing a load on the engine and switching to open valve injection, after the injecting fuel using closed valve injection.
A method of heating fuel using a heated tip fuel injector comprising:
- providing an internal combustion engine having at least one fuel injector, the at least one fuel injector having an internal heater;
- energizing the internal heater;
- and then
- starting the engine;
- injecting fuel using closed valve injection after the starting;
- and
- substantially simultaneously changing a load on the engine and switching to open valve injection, after the injecting fuel using closed valve injection.
Dependencies are inferred from the claim text.