Fluid sprinkling – spraying – and diffusing – Unitary injection nozzle and pump or accumulator plunger – Fluid operated plunger motor
Reexamination Certificate
2011-03-01
2011-03-01
Ganey, Steven J (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Unitary injection nozzle and pump or accumulator plunger
Fluid operated plunger motor
C239S088000, C239S102200, C239S533900, C239S585100, C239S071000, C123S446000
Reexamination Certificate
active
07896257
ABSTRACT:
A fuel injection apparatus with a piston device that includes a channel and a piston in the channel. A position sensor is used to detect the piston movement inside the channel when the fuel injection apparatus is energized and de-energized, and the sensing value is used for controlling fuel injection rate in real-time and diagnosing failures in the apparatus. With an actuator installed, the piston can also be used for independently modulating fuel pressure during fuel injection. Thereby the shape of fuel injection pulses is controlled. The fuel injection apparatus has three injection states, and flexible fuel injection timing and multi-pulse injection are allowed. Furthermore, in all injection states, fuel supply has no direct contact to combustion chamber. As a result, when a malfunction sticks the apparatus open, no fuel is supplied. This feature provides a safety nature to the fuel injection apparatus.
REFERENCES:
patent: 4129255 (1978-12-01), Bader et al.
patent: 5335852 (1994-08-01), Muntean et al.
patent: 6003497 (1999-12-01), Rodier et al.
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