Power plants – Fluid motor means driven by waste heat or by exhaust energy... – With supercharging means for engine
Patent
1996-03-28
1998-05-26
Koczo, Michael
Power plants
Fluid motor means driven by waste heat or by exhaust energy...
With supercharging means for engine
F02B 3712
Patent
active
057551014
ABSTRACT:
A turbocharger wastegate control system is responsive to electrical control signals to control the position of a wastegate valve positioned within an exhaust bypass conduit of the turbocharger. In one embodiment, the control system includes an air pressure control device having an inlet port receiving boost air pressure from an intake manifold connected to the turbocharger, an outlet port providing wastegate air pressure to a wastegate actuator and a vent to atmosphere. A number of air flow control switches are responsive to electrical control signals to control the levels of boost air pressure and vented air to thereby provide a plurality of discrete wastegate air pressure levels to the wastegate actuator. In another embodiment, the control system includes an electrically controllable wastegate actuator responsive to boost air pressure and electrical control signals to modulate the position of the wastegate actuator plunger.
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Free Paul Douglas
Lewis, Jr. Spencer C.
Nelson Canden R.
Cummins Engine Company, Inc.
Koczo Michael
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