Electronic turbocharger control

Patent · Tue Apr 14 04:00:00 EDT 1987

OSTI ID:6492798

Elpern, D G

A turbocharger is described comprising: a turbine adapted to be rotatably driven by exhaust gas flow from an engine; a compressor rotatably driven by the turbine and adapted to deliver pressurized airflow to the engine; housing means for defining a turbine gas inlet and outlet to direct gas flow to and from the turbine, and for defining a compressor air inlet and outlet to direct airflow to and from the compressor, the housing means further defining a wastegate passage interconnecting the turbine gas inlet and outlet in bypassing relation the turbine; a valve in the wastegate passage for modulating the volume of gas flow therethrough in bypassing relation to the turbine, the valve arranged such that pressure of gas flow in the turbine gas inlet urge the valve toward an open position; an actuator operably engaging the valve for moving the latter; biasing means operably engaging the actuator for urging the valve toward a closed position; means for generating an electrical control signal in response to an engine operating parameter; and control means responsive to the electrical control signal for engaging and disengaging the actuator, the control means operable upon engaging the actuator to override the urgings of the biasing means and the turbine inlet pressure and hold the actuator and the valve stationary.

• Assignee: The Garrett Corp., Los Angeles, CA
• Patent Number(s): US 4656834
• OSTI ID: 6492798
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ACTUATORS
COMPRESSORS
CONTROL EQUIPMENT
CONTROL SYSTEMS
ENGINES
EQUIPMENT
EXHAUST GASES
FLOW REGULATORS
FLUID FLOW
FLUIDS
GAS FLOW
GAS TURBINES
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINERY
SIGNALS
SUPERCHARGERS
TURBINES
TURBOCHARGERS
TURBOMACHINERY
VALVES
WASTES