Fuel injector for on-demand multi-fuel injection
AssigneesQuantLogic Corporation, Deyang Hou
InventorDeyang Hou
Life of this patent
Estimating the term…
Abstract
A fuel injector has means to directly inject one type of fuel or two types of fuels collectively with fuel ratios on demand. Once being used as a single fuel injector, the injector can enable injection rate shaping. Once being used as a dual fuel injector, the injector can tailor fuel properties on demand. The fuel injector has the capability to enable tailored chemical and thermal-physical fuel properties to enable high efficiency clean combustion for different engine loads and speeds.
Claims16
A fuel injector comprising:
- a nozzle body (6) comprising passages (603, 562, 602) for fuels, an inner cylindrical bore for receiving a composite needle valve (I) which can move up and down in axial direction, at least one group of fuel injection outlets (601) in said nozzle body, at least one spring (15) which urges said composite needle valve (I) into a biased seating position to block fuels, and a valve block (8) holding control valves (9, 13) and having fuel inlets connected to at least one of pressured fuel reservoirs (10, 12), a pressure control chamber (581) which can press and release the said composite needle valve (I), wherein said composite needle valve contains a one way check valve (4).
A fuel injection method, wherein it is composing steps to activate at least two independent control valves (9, 13) to block or connect to two types of fuels from high pressure fuel reservoirs (10, 12) with different pressures, wherein one fuel stream from higher pressure reservoir (10) can be mixed with one fuel stream from lower pressure reservoir (12) on demand through activating said one way check valve (4).
An internal combustion engine using fuel injection method of 8, which can be a spark-ignition engine or a compression-ignition engine, wherein it has means to inject dual fuels with different ratios to tailor fuel properties on demand based on engine loads and speeds.
An internal combustion engine using at least one fuel injection methods of 9, 10, 11, which can be a spark-ignition engine or a compression-ignition engine, wherein it has means to inject dual fuels with different ratios to tailor fuel properties on demand based on engine loads and speeds.
A combustion method, using at least one of the fuel injection methods of 8, 9, 10, 11, wherein it has means to optimize combustion under different operating conditions, through tailoring fuel chemical or thermal-physical properties on demand based on different needs under different operating parameters, such as engine loads and speeds.
A combustion method of 14, wherein one fuel stream is of diesel like fuel with higher chemical reactivity, one stream is with lower chemical reactivity such as gasoline, ethanol, methanol, methane, naphtha, water, wherein it has means to optimize combustion under different operating conditions, through blending the two streams on-demand within nozzle to tailor fuel chemical or thermal-physical properties based on different needs under different operating parameters, such as engine loads and speeds.
Dependencies are inferred from the claim text.