Garrett Transportation I Inc.

Michael Robert Uchanski

Daniel Pachner

Stephane Pees

Hani Mohtar

Andrew Love

Yuejiang Liu

François-Xavier Brulhart

Lukas Lansky

Louis Philippe De Araujo

Daniele Zecchetti

Lucas Lansky

Jungsik Yim

New and/or alternative approaches to performance control in an engine system having a compressor configured to receive torque from each of a turbine placed in an exhaust output of an engine and an electric motor. A control unit for the electric motor, referred to as an ETurbo controller, is provided with each of a speed control signal and a torque control signal from an engine control unit. The ETurbo controller is configured to use the torque control signal and speed control signal to operate the electric motor without causing the compressor to exceed a speed boundary.

Electric boost device control for turbocharger

A system and an approach for determining various flows in an internal combustion engine, such as an amount of recirculation exhaust gas flow through a controlled valve and a fresh air mass flow to an intake of an engine. Also, among the sensors accommodated in the system, is an inexpensive but slow-responding lambda sensor in the exhaust stream.

Inferential flow sensor

The speed of a turbocharger may be estimated using data from sensors that are readily available in most engine management systems. In some cases, a pressure measurement from a MAP sensor may be used, in combination with one or more computational models, to provide an efficient, lower cost estimate of turbo speed that can be used to control operation of the engine and/or the turbocharger.

System and method for estimating turbo speed of an engine

A method for controlling an inlet-adjustment mechanism in an air inlet for a compressor so as to switch the mechanism between open and closed positions for adjusting a flow area of the inlet. The method includes an algorithm for determining when the inlet-adjustment mechanism is in a failure mode. In accordance with the method, when the operating point on the compressor map is on the high-flow side of a threshold line at which the inlet-adjustment mechanism is switched from one position to the other, a measured speed or pressure ratio is compared to a theoretical value for the speed or pressure ratio based on a compressor map for the open position of the mechanism. If the measured value differs from the theoretical value by more than a predetermined tolerance, a failure mode is indicated.

Method for controlling an inlet-adjustment mechanism for a turbocharger compressor

A system and an approach for determining various pressures or flows in an internal combustion engine, such as a pressure adjacent a recirculation exhaust gas flow through a controlled valve of an engine. Also, among the sensors accommodated in the system, is a pressure sensor sensing a pressure in an intake manifold of the engine.

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Vevey, Switzerland

Michael Robert Uchanski