Variable capacity turbocharger control device

Patent · Tue Jul 14 04:00:00 EDT 1987

OSTI ID:6341997

Nishiguchi, F; Noguchi, M; Hatanaka, K

A device is described for controlling a turbocharger having a compressor and a turbine coupled to the compressor, the device comprising: means for determining the supercharge pressure of air from the compressor; variable capacity means for varying the flow rate of exhaust gas introduced into the turbine in a low speed state of an engine connected to the turbocharger, the variable capacity means responsive to a first control signal; exhaust gas bypass means for controlling the flow rate of the exhaust gas bypassing the variable capacity means and the turbine in a high speed state of the engine, the bypass means responsive to a second control signal; a control means, responsive to operating parameters for the engine, for generating the first and second control signals; and the control means for detecting an acceleration state of the engine and responsive to the determined supercharge procedure and generating the second control signal for controlling the operation of the exhaust gas bypass means. The exhaust gas bypass means reduces the flow rate of the exhaust gas introduced into the turbine only when the determined supercharge pressure reaches a predetermined pressure in an acceleration state of the engine.

• Assignee: Nissan Motor Co., Ltd., Yokohama
• Patent Number(s): US 4679398
• OSTI ID: 6341997
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ACCELERATION
AIR FLOW
COMPRESSORS
CONTROL EQUIPMENT
CONTROL SYSTEMS
ENGINES
EQUIPMENT
EXHAUST GASES
FLOW RATE
FLOW REGULATORS
FLUID FLOW
FLUIDS
GAS FLOW
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINERY
MEASURING INSTRUMENTS
PRESSURE EFFECTS
PRESSURE MEASUREMENT
SIGNALS
SUPERCHARGERS
TURBINES
TURBOCHARGERS
TURBOMACHINERY
VELOCIMETERS
WASTES