Supercharging pressure controller for engine

Details Supercharging pressure controller for engine Supercharging pressure controller for engine

2006-05-22

2008-10-14

Denion, Thomas (Department: 3748)

Power plants

Fluid motor means driven by waste heat or by exhaust energy...

With supercharging means for engine

C060S602000

Reexamination Certificate

active

07434399

ABSTRACT:
A supercharging pressure controller of an internal combustion engine estimates time to execute a process of bringing power supplied to an assist motor to zero based on delay characteristics of actual emission energy immediately before actual supercharging pressure reaches target supercharging pressure. The supercharging pressure controller sets a gradient of a power gradual reduction waveform in a power gradual reduction control period at a gradient for bringing the power supplied to the assist motor to zero at the estimated time. Thus, the power supplied to the assist motor gradually reduces at the predetermined gradient over time finally to zero at the estimated time. The assist motor is turned off while the actual supercharging pressure follows the target supercharging pressure, without wastefully consuming electric energy.

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