Gm Global Technolgoy Operations, Inc.

Helmut Oswald

Christopher E Whitney

Paul Alan Bauerle

Robert Charles Simon, Jr

Ning Jin

Todd R Shupe

Stuart R Smith

Vivek Mehta

Randall S Beikmann

Klaus Pochner

Etsuko Muraji Stewart

Ronald W Van Diepen

Jun Lu

Thomas Alan Slopsema

Uwe Steinmann

Enrico Tropschug

Dietmar Bergbauer

Oliver Kirmess

Bjorn Nordmann

Frank Schwerin

Julie S Fuller

Bjørn Nordmann

A device is provided for producing and/or augmenting a partial vacuum in a motor vehicle, in particular for operating a partial vacuum brake servo-unit. The device includes, but is not limited to a throttle unit, which has at least one throttle valve housing and a throttle valve which is arranged so as to be rotatable in an angle range in a throttle channel in the throttle valve housing for controlling a fluid flow in the throttle channel. The device also includes, but is not limited to means for producing and/or augmenting partial vacuum, the means being configured as partial vacuum augmentation means integrated into the throttle valve housing, which partial vacuum augmentation means act according to Bernoulli's principle in the manner of a sucking jet pump to produce an augmented partial vacuum for at least one brake servo-unit. The means are configured as at least one control bore extending through the throttle valve housing, wherein the control bore opens in the throttle channel in an opening to produce a partial vacuum in the control bore and the control bore is set in the drag direction at a setting angle &#x3b1;&#x3e;0&#xb0; measured with respect to the cross-sectional plane of the throttle channel.

Device for generating a vacuum in a motor vehicle

An engine control system comprises a pedal torque determination module, a driver interpretation module, and an actuation module. The pedal torque determination module determines a zero pedal torque based on a desired engine torque at a zero accelerator pedal position and a minimum torque limit for an engine system. The driver interpretation module determines a driver pedal torque based on the zero pedal torque and an accelerator pedal position. The actuation module controls at least one of a throttle area, spark timing, and a fuel command based on the driver pedal torque.

Method to include fast torque actuators in the driver pedal scaling for conventional powertrains

The aim of the invention is to estimate a temperature jump (&#x394;T) of a catalytic converter of an internal combustion engine in the event of a change in the composition of the exhaust gas. To this end, a quantity of a reactand (SI) stored in the catalytic converter is monitored (-), and the heating (&#x394;T) of the catalytic converter resulting from the reaction heat released during the reaction of the stored reactand is assumed () as the temperature jump (&#x394;T).

Estimation of the temperature of a catalytic converter and corresponding applications

Methods and apparatus are provided for controlling a shutdown of an internal combustion engine. The apparatus comprises an intake manifold configured to conduct an intake charge of air to an intake port of the internal combustion engine and a throttle configured to alter the intake charge of air to the intake port of the internal combustion engine. The apparatus further comprises a controller configured to control the throttle such that a substantial termination of the intake charge of air is provided during the shutdown of the internal combustion engine.

Methods and apparatus for controlling a shutdown of an internal combustion engine

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Albig, Germany

Helmut Oswald