Method of Controlling a Turbocharger Having a Variable-Geometry Mechanism and a Waste Gate
A method for controlling a variable-geometry turbine ( 24 ) that includes a variable-geometry mechanism that is movable between a fully closed position closing a relatively greater portion of the turbine nozzle and a fully open position closing a relatively smaller portion of the nozzle. The turbine...
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| creator | MASSART EDUARDO LOMBARD ALAIN MITKA JEROME FERRARI SEBASTIAN |
| description | A method for controlling a variable-geometry turbine ( 24 ) that includes a variable-geometry mechanism that is movable between a fully closed position closing a relatively greater portion of the turbine nozzle and a fully open position closing a relatively smaller portion of the nozzle. The turbine ( 24 ) further comprises a waste gate ( 40 ) movable between a closed position and an open position in which some of the exhaust gas bypasses the turbine ( 24 ). At low engine speeds, turbocharger boost us regulated by regulating the position of the wastegate. At high engine speeds, the variable geometry is fully open and the wastegate is opened again. When at medium engine speeds, the variable geometry mechanism is to be moved from its closed position toward its fully open position, the waste gate ( 40 ) is in an open position to cause a proportion of the exhaust gas to bypass the turbine ( 24 ) and thereby reduce the pressure of the exhaust gas in the chamber. While this reduced pressure of the exhaust gas is in effect, the variable-geometry mechanism is moved from the fully closed position toward the fully open position while simultaneously the waste gate begins to close. |
| format | Patent |
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The turbine ( 24 ) further comprises a waste gate ( 40 ) movable between a closed position and an open position in which some of the exhaust gas bypasses the turbine ( 24 ). At low engine speeds, turbocharger boost us regulated by regulating the position of the wastegate. At high engine speeds, the variable geometry is fully open and the wastegate is opened again. When at medium engine speeds, the variable geometry mechanism is to be moved from its closed position toward its fully open position, the waste gate ( 40 ) is in an open position to cause a proportion of the exhaust gas to bypass the turbine ( 24 ) and thereby reduce the pressure of the exhaust gas in the chamber. 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| subjects | BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MECHANICAL ENGINEERING TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS |
| title | Method of Controlling a Turbocharger Having a Variable-Geometry Mechanism and a Waste Gate |
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